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  * <j@w1.fi>
  10  * Copyright (c) 2002-2003, Jouni Malinen <j@w1.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-1.1.13"
  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 /* QOS control */
 108 #define IEEE80211_QCTL_TID              0x000F
 109
 110 /* debug macros */
 111
 112 #ifdef CONFIG_IEEE80211_DEBUG
 113 extern u32 ieee80211_debug_level;
 114 #define IEEE80211_DEBUG(level, fmt, args...) \
 115 do { if (ieee80211_debug_level & (level)) \
 116   printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
 117          in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
 118 static inline bool ieee80211_ratelimit_debug(u32 level)
 119 {
 120         return (ieee80211_debug_level & level) && net_ratelimit();
 121 }
 122 #else
 123 #define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
 124 static inline bool ieee80211_ratelimit_debug(u32 level)
 125 {
 126         return false;
 127 }
 128 #endif                          /* CONFIG_IEEE80211_DEBUG */
 129
 130 /* escape_essid() is intended to be used in debug (and possibly error)
 131  * messages. It should never be used for passing essid to user space. */
 132 const char *escape_essid(const char *essid, u8 essid_len);
 133
 134 /*
 135  * To use the debug system:
 136  *
 137  * If you are defining a new debug classification, simply add it to the #define
 138  * list here in the form of:
 139  *
 140  * #define IEEE80211_DL_xxxx VALUE
 141  *
 142  * shifting value to the left one bit from the previous entry.  xxxx should be
 143  * the name of the classification (for example, WEP)
 144  *
 145  * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
 146  * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
 147  * to send output to that classification.
 148  *
 149  * To add your debug level to the list of levels seen when you perform
 150  *
 151  * % cat /proc/net/ieee80211/debug_level
 152  *
 153  * you simply need to add your entry to the ieee80211_debug_level array.
 154  *
 155  * If you do not see debug_level in /proc/net/ieee80211 then you do not have
 156  * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
 157  *
 158  */
 159
 160 #define IEEE80211_DL_INFO          (1<<0)
 161 #define IEEE80211_DL_WX            (1<<1)
 162 #define IEEE80211_DL_SCAN          (1<<2)
 163 #define IEEE80211_DL_STATE         (1<<3)
 164 #define IEEE80211_DL_MGMT          (1<<4)
 165 #define IEEE80211_DL_FRAG          (1<<5)
 166 #define IEEE80211_DL_DROP          (1<<7)
 167
 168 #define IEEE80211_DL_TX            (1<<8)
 169 #define IEEE80211_DL_RX            (1<<9)
 170 #define IEEE80211_DL_QOS           (1<<31)
 171
 172 #define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
 173 #define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
 174 #define IEEE80211_DEBUG_INFO(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
 175
 176 #define IEEE80211_DEBUG_WX(f, a...)     IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
 177 #define IEEE80211_DEBUG_SCAN(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
 178 #define IEEE80211_DEBUG_STATE(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
 179 #define IEEE80211_DEBUG_MGMT(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
 180 #define IEEE80211_DEBUG_FRAG(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
 181 #define IEEE80211_DEBUG_DROP(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
 182 #define IEEE80211_DEBUG_TX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
 183 #define IEEE80211_DEBUG_RX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
 184 #define IEEE80211_DEBUG_QOS(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)
 185 #include <linux/netdevice.h>
 186 #include <linux/wireless.h>
 187 #include <linux/if_arp.h>       /* ARPHRD_ETHER */
 188
 189 #ifndef WIRELESS_SPY
 190 #define WIRELESS_SPY            /* enable iwspy support */
 191 #endif
 192 #include <net/iw_handler.h>     /* new driver API */
 193
 194 #ifndef ETH_P_PAE
 195 #define ETH_P_PAE 0x888E        /* Port Access Entity (IEEE 802.1X) */
 196 #endif                          /* ETH_P_PAE */
 197
 198 #define ETH_P_PREAUTH 0x88C7    /* IEEE 802.11i pre-authentication */
 199
 200 #ifndef ETH_P_80211_RAW
 201 #define ETH_P_80211_RAW (ETH_P_ECONET + 1)
 202 #endif
 203
 204 /* IEEE 802.11 defines */
 205
 206 #define P80211_OUI_LEN 3
 207
 208 struct ieee80211_snap_hdr {
 209
 210         u8 dsap;                /* always 0xAA */
 211         u8 ssap;                /* always 0xAA */
 212         u8 ctrl;                /* always 0x03 */
 213         u8 oui[P80211_OUI_LEN]; /* organizational universal id */
 214
 215 } __attribute__ ((packed));
 216
 217 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
 218
 219 #define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
 220 #define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
 221 #define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
 222
 223 #define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
 224 #define WLAN_GET_SEQ_SEQ(seq)  (((seq) & IEEE80211_SCTL_SEQ) >> 4)
 225
 226 /* Authentication algorithms */
 227 #define WLAN_AUTH_OPEN 0
 228 #define WLAN_AUTH_SHARED_KEY 1
 229 #define WLAN_AUTH_LEAP 2
 230
 231 #define WLAN_AUTH_CHALLENGE_LEN 128
 232
 233 #define WLAN_CAPABILITY_ESS (1<<0)
 234 #define WLAN_CAPABILITY_IBSS (1<<1)
 235 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
 236 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
 237 #define WLAN_CAPABILITY_PRIVACY (1<<4)
 238 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
 239 #define WLAN_CAPABILITY_PBCC (1<<6)
 240 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
 241 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
 242 #define WLAN_CAPABILITY_QOS (1<<9)
 243 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
 244 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
 245
 246 /* 802.11g ERP information element */
 247 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
 248 #define WLAN_ERP_USE_PROTECTION (1<<1)
 249 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
 250
 251 /* Status codes */
 252 enum ieee80211_statuscode {
 253         WLAN_STATUS_SUCCESS = 0,
 254         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
 255         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
 256         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
 257         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
 258         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
 259         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
 260         WLAN_STATUS_CHALLENGE_FAIL = 15,
 261         WLAN_STATUS_AUTH_TIMEOUT = 16,
 262         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
 263         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
 264         /* 802.11b */
 265         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
 266         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
 267         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
 268         /* 802.11h */
 269         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
 270         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
 271         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
 272         /* 802.11g */
 273         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
 274         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
 275         /* 802.11i */
 276         WLAN_STATUS_INVALID_IE = 40,
 277         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
 278         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
 279         WLAN_STATUS_INVALID_AKMP = 43,
 280         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
 281         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
 282         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
 283 };
 284
 285 /* Reason codes */
 286 enum ieee80211_reasoncode {
 287         WLAN_REASON_UNSPECIFIED = 1,
 288         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
 289         WLAN_REASON_DEAUTH_LEAVING = 3,
 290         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
 291         WLAN_REASON_DISASSOC_AP_BUSY = 5,
 292         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
 293         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
 294         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
 295         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
 296         /* 802.11h */
 297         WLAN_REASON_DISASSOC_BAD_POWER = 10,
 298         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
 299         /* 802.11i */
 300         WLAN_REASON_INVALID_IE = 13,
 301         WLAN_REASON_MIC_FAILURE = 14,
 302         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
 303         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
 304         WLAN_REASON_IE_DIFFERENT = 17,
 305         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
 306         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
 307         WLAN_REASON_INVALID_AKMP = 20,
 308         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
 309         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
 310         WLAN_REASON_IEEE8021X_FAILED = 23,
 311         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
 312 };
 313
 314 /* Action categories - 802.11h */
 315 enum ieee80211_actioncategories {
 316         WLAN_ACTION_SPECTRUM_MGMT = 0,
 317         /* Reserved 1-127  */
 318         /* Error    128-255 */
 319 };
 320
 321 /* Action details - 802.11h */
 322 enum ieee80211_actiondetails {
 323         WLAN_ACTION_CATEGORY_MEASURE_REQUEST = 0,
 324         WLAN_ACTION_CATEGORY_MEASURE_REPORT = 1,
 325         WLAN_ACTION_CATEGORY_TPC_REQUEST = 2,
 326         WLAN_ACTION_CATEGORY_TPC_REPORT = 3,
 327         WLAN_ACTION_CATEGORY_CHANNEL_SWITCH = 4,
 328         /* 5 - 255 Reserved */
 329 };
 330
 331 #define IEEE80211_STATMASK_SIGNAL (1<<0)
 332 #define IEEE80211_STATMASK_RSSI (1<<1)
 333 #define IEEE80211_STATMASK_NOISE (1<<2)
 334 #define IEEE80211_STATMASK_RATE (1<<3)
 335 #define IEEE80211_STATMASK_WEMASK 0x7
 336
 337 #define IEEE80211_CCK_MODULATION    (1<<0)
 338 #define IEEE80211_OFDM_MODULATION   (1<<1)
 339
 340 #define IEEE80211_24GHZ_BAND     (1<<0)
 341 #define IEEE80211_52GHZ_BAND     (1<<1)
 342
 343 #define IEEE80211_CCK_RATE_1MB                  0x02
 344 #define IEEE80211_CCK_RATE_2MB                  0x04
 345 #define IEEE80211_CCK_RATE_5MB                  0x0B
 346 #define IEEE80211_CCK_RATE_11MB                 0x16
 347 #define IEEE80211_OFDM_RATE_6MB                 0x0C
 348 #define IEEE80211_OFDM_RATE_9MB                 0x12
 349 #define IEEE80211_OFDM_RATE_12MB                0x18
 350 #define IEEE80211_OFDM_RATE_18MB                0x24
 351 #define IEEE80211_OFDM_RATE_24MB                0x30
 352 #define IEEE80211_OFDM_RATE_36MB                0x48
 353 #define IEEE80211_OFDM_RATE_48MB                0x60
 354 #define IEEE80211_OFDM_RATE_54MB                0x6C
 355 #define IEEE80211_BASIC_RATE_MASK               0x80
 356
 357 #define IEEE80211_CCK_RATE_1MB_MASK             (1<<0)
 358 #define IEEE80211_CCK_RATE_2MB_MASK             (1<<1)
 359 #define IEEE80211_CCK_RATE_5MB_MASK             (1<<2)
 360 #define IEEE80211_CCK_RATE_11MB_MASK            (1<<3)
 361 #define IEEE80211_OFDM_RATE_6MB_MASK            (1<<4)
 362 #define IEEE80211_OFDM_RATE_9MB_MASK            (1<<5)
 363 #define IEEE80211_OFDM_RATE_12MB_MASK           (1<<6)
 364 #define IEEE80211_OFDM_RATE_18MB_MASK           (1<<7)
 365 #define IEEE80211_OFDM_RATE_24MB_MASK           (1<<8)
 366 #define IEEE80211_OFDM_RATE_36MB_MASK           (1<<9)
 367 #define IEEE80211_OFDM_RATE_48MB_MASK           (1<<10)
 368 #define IEEE80211_OFDM_RATE_54MB_MASK           (1<<11)
 369
 370 #define IEEE80211_CCK_RATES_MASK                0x0000000F
 371 #define IEEE80211_CCK_BASIC_RATES_MASK  (IEEE80211_CCK_RATE_1MB_MASK | \
 372         IEEE80211_CCK_RATE_2MB_MASK)
 373 #define IEEE80211_CCK_DEFAULT_RATES_MASK        (IEEE80211_CCK_BASIC_RATES_MASK | \
 374         IEEE80211_CCK_RATE_5MB_MASK | \
 375         IEEE80211_CCK_RATE_11MB_MASK)
 376
 377 #define IEEE80211_OFDM_RATES_MASK               0x00000FF0
 378 #define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
 379         IEEE80211_OFDM_RATE_12MB_MASK | \
 380         IEEE80211_OFDM_RATE_24MB_MASK)
 381 #define IEEE80211_OFDM_DEFAULT_RATES_MASK       (IEEE80211_OFDM_BASIC_RATES_MASK | \
 382         IEEE80211_OFDM_RATE_9MB_MASK  | \
 383         IEEE80211_OFDM_RATE_18MB_MASK | \
 384         IEEE80211_OFDM_RATE_36MB_MASK | \
 385         IEEE80211_OFDM_RATE_48MB_MASK | \
 386         IEEE80211_OFDM_RATE_54MB_MASK)
 387 #define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
 388                                 IEEE80211_CCK_DEFAULT_RATES_MASK)
 389
 390 #define IEEE80211_NUM_OFDM_RATES            8
 391 #define IEEE80211_NUM_CCK_RATES             4
 392 #define IEEE80211_OFDM_SHIFT_MASK_A         4
 393
 394 /* NOTE: This data is for statistical purposes; not all hardware provides this
 395  *       information for frames received.
 396  *       For ieee80211_rx_mgt, you need to set at least the 'len' parameter.
 397  */
 398 struct ieee80211_rx_stats {
 399         u32 mac_time;
 400         s8 rssi;
 401         u8 signal;
 402         u8 noise;
 403         u16 rate;               /* in 100 kbps */
 404         u8 received_channel;
 405         u8 control;
 406         u8 mask;
 407         u8 freq;
 408         u16 len;
 409         u64 tsf;
 410         u32 beacon_time;
 411 };
 412
 413 /* IEEE 802.11 requires that STA supports concurrent reception of at least
 414  * three fragmented frames. This define can be increased to support more
 415  * concurrent frames, but it should be noted that each entry can consume about
 416  * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
 417 #define IEEE80211_FRAG_CACHE_LEN 4
 418
 419 struct ieee80211_frag_entry {
 420         unsigned long first_frag_time;
 421         unsigned int seq;
 422         unsigned int last_frag;
 423         struct sk_buff *skb;
 424         u8 src_addr[ETH_ALEN];
 425         u8 dst_addr[ETH_ALEN];
 426 };
 427
 428 struct ieee80211_stats {
 429         unsigned int tx_unicast_frames;
 430         unsigned int tx_multicast_frames;
 431         unsigned int tx_fragments;
 432         unsigned int tx_unicast_octets;
 433         unsigned int tx_multicast_octets;
 434         unsigned int tx_deferred_transmissions;
 435         unsigned int tx_single_retry_frames;
 436         unsigned int tx_multiple_retry_frames;
 437         unsigned int tx_retry_limit_exceeded;
 438         unsigned int tx_discards;
 439         unsigned int rx_unicast_frames;
 440         unsigned int rx_multicast_frames;
 441         unsigned int rx_fragments;
 442         unsigned int rx_unicast_octets;
 443         unsigned int rx_multicast_octets;
 444         unsigned int rx_fcs_errors;
 445         unsigned int rx_discards_no_buffer;
 446         unsigned int tx_discards_wrong_sa;
 447         unsigned int rx_discards_undecryptable;
 448         unsigned int rx_message_in_msg_fragments;
 449         unsigned int rx_message_in_bad_msg_fragments;
 450 };
 451
 452 struct ieee80211_device;
 453
 454 #include "ieee80211_crypt.h"
 455
 456 #define SEC_KEY_1               (1<<0)
 457 #define SEC_KEY_2               (1<<1)
 458 #define SEC_KEY_3               (1<<2)
 459 #define SEC_KEY_4               (1<<3)
 460 #define SEC_ACTIVE_KEY          (1<<4)
 461 #define SEC_AUTH_MODE           (1<<5)
 462 #define SEC_UNICAST_GROUP       (1<<6)
 463 #define SEC_LEVEL               (1<<7)
 464 #define SEC_ENABLED             (1<<8)
 465 #define SEC_ENCRYPT             (1<<9)
 466
 467 #define SEC_LEVEL_0             0       /* None */
 468 #define SEC_LEVEL_1             1       /* WEP 40 and 104 bit */
 469 #define SEC_LEVEL_2             2       /* Level 1 + TKIP */
 470 #define SEC_LEVEL_2_CKIP        3       /* Level 1 + CKIP */
 471 #define SEC_LEVEL_3             4       /* Level 2 + CCMP */
 472
 473 #define SEC_ALG_NONE            0
 474 #define SEC_ALG_WEP             1
 475 #define SEC_ALG_TKIP            2
 476 #define SEC_ALG_CCMP            3
 477
 478 #define WEP_KEYS                4
 479 #define WEP_KEY_LEN             13
 480 #define SCM_KEY_LEN             32
 481 #define SCM_TEMPORAL_KEY_LENGTH 16
 482
 483 struct ieee80211_security {
 484         u16 active_key:2,
 485             enabled:1,
 486             auth_mode:2, auth_algo:4, unicast_uses_group:1, encrypt:1;
 487         u8 encode_alg[WEP_KEYS];
 488         u8 key_sizes[WEP_KEYS];
 489         u8 keys[WEP_KEYS][SCM_KEY_LEN];
 490         u8 level;
 491         u16 flags;
 492 } __attribute__ ((packed));
 493
 494 /*
 495
 496  802.11 data frame from AP
 497
 498       ,-------------------------------------------------------------------.
 499 Bytes |  2   |  2   |    6    |    6    |    6    |  2   | 0..2312 |   4  |
 500       |------|------|---------|---------|---------|------|---------|------|
 501 Desc. | ctrl | dura |  DA/RA  |   TA    |    SA   | Sequ |  frame  |  fcs |
 502       |      | tion | (BSSID) |         |         | ence |  data   |      |
 503       `-------------------------------------------------------------------'
 504
 505 Total: 28-2340 bytes
 506
 507 */
 508
 509 #define BEACON_PROBE_SSID_ID_POSITION 12
 510
 511 /* Management Frame Information Element Types */
 512 enum ieee80211_mfie {
 513         MFIE_TYPE_SSID = 0,
 514         MFIE_TYPE_RATES = 1,
 515         MFIE_TYPE_FH_SET = 2,
 516         MFIE_TYPE_DS_SET = 3,
 517         MFIE_TYPE_CF_SET = 4,
 518         MFIE_TYPE_TIM = 5,
 519         MFIE_TYPE_IBSS_SET = 6,
 520         MFIE_TYPE_COUNTRY = 7,
 521         MFIE_TYPE_HOP_PARAMS = 8,
 522         MFIE_TYPE_HOP_TABLE = 9,
 523         MFIE_TYPE_REQUEST = 10,
 524         MFIE_TYPE_CHALLENGE = 16,
 525         MFIE_TYPE_POWER_CONSTRAINT = 32,
 526         MFIE_TYPE_POWER_CAPABILITY = 33,
 527         MFIE_TYPE_TPC_REQUEST = 34,
 528         MFIE_TYPE_TPC_REPORT = 35,
 529         MFIE_TYPE_SUPP_CHANNELS = 36,
 530         MFIE_TYPE_CSA = 37,
 531         MFIE_TYPE_MEASURE_REQUEST = 38,
 532         MFIE_TYPE_MEASURE_REPORT = 39,
 533         MFIE_TYPE_QUIET = 40,
 534         MFIE_TYPE_IBSS_DFS = 41,
 535         MFIE_TYPE_ERP_INFO = 42,
 536         MFIE_TYPE_RSN = 48,
 537         MFIE_TYPE_RATES_EX = 50,
 538         MFIE_TYPE_GENERIC = 221,
 539         MFIE_TYPE_QOS_PARAMETER = 222,
 540 };
 541
 542 /* Minimal header; can be used for passing 802.11 frames with sufficient
 543  * information to determine what type of underlying data type is actually
 544  * stored in the data. */
 545 struct ieee80211_hdr {
 546         __le16 frame_ctl;
 547         __le16 duration_id;
 548         u8 payload[0];
 549 } __attribute__ ((packed));
 550
 551 struct ieee80211_hdr_1addr {
 552         __le16 frame_ctl;
 553         __le16 duration_id;
 554         u8 addr1[ETH_ALEN];
 555         u8 payload[0];
 556 } __attribute__ ((packed));
 557
 558 struct ieee80211_hdr_2addr {
 559         __le16 frame_ctl;
 560         __le16 duration_id;
 561         u8 addr1[ETH_ALEN];
 562         u8 addr2[ETH_ALEN];
 563         u8 payload[0];
 564 } __attribute__ ((packed));
 565
 566 struct ieee80211_hdr_3addr {
 567         __le16 frame_ctl;
 568         __le16 duration_id;
 569         u8 addr1[ETH_ALEN];
 570         u8 addr2[ETH_ALEN];
 571         u8 addr3[ETH_ALEN];
 572         __le16 seq_ctl;
 573         u8 payload[0];
 574 } __attribute__ ((packed));
 575
 576 struct ieee80211_hdr_4addr {
 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 addr4[ETH_ALEN];
 584         u8 payload[0];
 585 } __attribute__ ((packed));
 586
 587 struct ieee80211_hdr_3addrqos {
 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 payload[0];
 595         __le16 qos_ctl;
 596 } __attribute__ ((packed));
 597
 598 struct ieee80211_hdr_4addrqos {
 599         __le16 frame_ctl;
 600         __le16 duration_id;
 601         u8 addr1[ETH_ALEN];
 602         u8 addr2[ETH_ALEN];
 603         u8 addr3[ETH_ALEN];
 604         __le16 seq_ctl;
 605         u8 addr4[ETH_ALEN];
 606         u8 payload[0];
 607         __le16 qos_ctl;
 608 } __attribute__ ((packed));
 609
 610 struct ieee80211_info_element {
 611         u8 id;
 612         u8 len;
 613         u8 data[0];
 614 } __attribute__ ((packed));
 615
 616 /*
 617  * These are the data types that can make up management packets
 618  *
 619         u16 auth_algorithm;
 620         u16 auth_sequence;
 621         u16 beacon_interval;
 622         u16 capability;
 623         u8 current_ap[ETH_ALEN];
 624         u16 listen_interval;
 625         struct {
 626                 u16 association_id:14, reserved:2;
 627         } __attribute__ ((packed));
 628         u32 time_stamp[2];
 629         u16 reason;
 630         u16 status;
 631 */
 632
 633 struct ieee80211_auth {
 634         struct ieee80211_hdr_3addr header;
 635         __le16 algorithm;
 636         __le16 transaction;
 637         __le16 status;
 638         /* challenge */
 639         struct ieee80211_info_element info_element[0];
 640 } __attribute__ ((packed));
 641
 642 struct ieee80211_channel_switch {
 643         u8 id;
 644         u8 len;
 645         u8 mode;
 646         u8 channel;
 647         u8 count;
 648 } __attribute__ ((packed));
 649
 650 struct ieee80211_action {
 651         struct ieee80211_hdr_3addr header;
 652         u8 category;
 653         u8 action;
 654         union {
 655                 struct ieee80211_action_exchange {
 656                         u8 token;
 657                         struct ieee80211_info_element info_element[0];
 658                 } exchange;
 659                 struct ieee80211_channel_switch channel_switch;
 660
 661         } format;
 662 } __attribute__ ((packed));
 663
 664 struct ieee80211_disassoc {
 665         struct ieee80211_hdr_3addr header;
 666         __le16 reason;
 667 } __attribute__ ((packed));
 668
 669 /* Alias deauth for disassoc */
 670 #define ieee80211_deauth ieee80211_disassoc
 671
 672 struct ieee80211_probe_request {
 673         struct ieee80211_hdr_3addr header;
 674         /* SSID, supported rates */
 675         struct ieee80211_info_element info_element[0];
 676 } __attribute__ ((packed));
 677
 678 struct ieee80211_probe_response {
 679         struct ieee80211_hdr_3addr header;
 680         __le32 time_stamp[2];
 681         __le16 beacon_interval;
 682         __le16 capability;
 683         /* SSID, supported rates, FH params, DS params,
 684          * CF params, IBSS params, TIM (if beacon), RSN */
 685         struct ieee80211_info_element info_element[0];
 686 } __attribute__ ((packed));
 687
 688 /* Alias beacon for probe_response */
 689 #define ieee80211_beacon ieee80211_probe_response
 690
 691 struct ieee80211_assoc_request {
 692         struct ieee80211_hdr_3addr header;
 693         __le16 capability;
 694         __le16 listen_interval;
 695         /* SSID, supported rates, RSN */
 696         struct ieee80211_info_element info_element[0];
 697 } __attribute__ ((packed));
 698
 699 struct ieee80211_reassoc_request {
 700         struct ieee80211_hdr_3addr header;
 701         __le16 capability;
 702         __le16 listen_interval;
 703         u8 current_ap[ETH_ALEN];
 704         struct ieee80211_info_element info_element[0];
 705 } __attribute__ ((packed));
 706
 707 struct ieee80211_assoc_response {
 708         struct ieee80211_hdr_3addr header;
 709         __le16 capability;
 710         __le16 status;
 711         __le16 aid;
 712         /* supported rates */
 713         struct ieee80211_info_element info_element[0];
 714 } __attribute__ ((packed));
 715
 716 struct ieee80211_txb {
 717         u8 nr_frags;
 718         u8 encrypted;
 719         u8 rts_included;
 720         u8 reserved;
 721         u16 frag_size;
 722         u16 payload_size;
 723         struct sk_buff *fragments[0];
 724 };
 725
 726 /* SWEEP TABLE ENTRIES NUMBER */
 727 #define MAX_SWEEP_TAB_ENTRIES             42
 728 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET  7
 729 /* MAX_RATES_LENGTH needs to be 12.  The spec says 8, and many APs
 730  * only use 8, and then use extended rates for the remaining supported
 731  * rates.  Other APs, however, stick all of their supported rates on the
 732  * main rates information element... */
 733 #define MAX_RATES_LENGTH                  ((u8)12)
 734 #define MAX_RATES_EX_LENGTH               ((u8)16)
 735 #define MAX_NETWORK_COUNT                  128
 736
 737 #define CRC_LENGTH                 4U
 738
 739 #define MAX_WPA_IE_LEN 64
 740
 741 #define NETWORK_EMPTY_ESSID    (1<<0)
 742 #define NETWORK_HAS_OFDM       (1<<1)
 743 #define NETWORK_HAS_CCK        (1<<2)
 744
 745 /* QoS structure */
 746 #define NETWORK_HAS_QOS_PARAMETERS      (1<<3)
 747 #define NETWORK_HAS_QOS_INFORMATION     (1<<4)
 748 #define NETWORK_HAS_QOS_MASK            (NETWORK_HAS_QOS_PARAMETERS | \
 749                                          NETWORK_HAS_QOS_INFORMATION)
 750
 751 /* 802.11h */
 752 #define NETWORK_HAS_POWER_CONSTRAINT    (1<<5)
 753 #define NETWORK_HAS_CSA                 (1<<6)
 754 #define NETWORK_HAS_QUIET               (1<<7)
 755 #define NETWORK_HAS_IBSS_DFS            (1<<8)
 756 #define NETWORK_HAS_TPC_REPORT          (1<<9)
 757
 758 #define NETWORK_HAS_ERP_VALUE           (1<<10)
 759
 760 #define QOS_QUEUE_NUM                   4
 761 #define QOS_OUI_LEN                     3
 762 #define QOS_OUI_TYPE                    2
 763 #define QOS_ELEMENT_ID                  221
 764 #define QOS_OUI_INFO_SUB_TYPE           0
 765 #define QOS_OUI_PARAM_SUB_TYPE          1
 766 #define QOS_VERSION_1                   1
 767 #define QOS_AIFSN_MIN_VALUE             2
 768
 769 struct ieee80211_qos_information_element {
 770         u8 elementID;
 771         u8 length;
 772         u8 qui[QOS_OUI_LEN];
 773         u8 qui_type;
 774         u8 qui_subtype;
 775         u8 version;
 776         u8 ac_info;
 777 } __attribute__ ((packed));
 778
 779 struct ieee80211_qos_ac_parameter {
 780         u8 aci_aifsn;
 781         u8 ecw_min_max;
 782         __le16 tx_op_limit;
 783 } __attribute__ ((packed));
 784
 785 struct ieee80211_qos_parameter_info {
 786         struct ieee80211_qos_information_element info_element;
 787         u8 reserved;
 788         struct ieee80211_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
 789 } __attribute__ ((packed));
 790
 791 struct ieee80211_qos_parameters {
 792         __le16 cw_min[QOS_QUEUE_NUM];
 793         __le16 cw_max[QOS_QUEUE_NUM];
 794         u8 aifs[QOS_QUEUE_NUM];
 795         u8 flag[QOS_QUEUE_NUM];
 796         __le16 tx_op_limit[QOS_QUEUE_NUM];
 797 } __attribute__ ((packed));
 798
 799 struct ieee80211_qos_data {
 800         struct ieee80211_qos_parameters parameters;
 801         int active;
 802         int supported;
 803         u8 param_count;
 804         u8 old_param_count;
 805 };
 806
 807 struct ieee80211_tim_parameters {
 808         u8 tim_count;
 809         u8 tim_period;
 810 } __attribute__ ((packed));
 811
 812 /*******************************************************/
 813
 814 enum {                          /* ieee80211_basic_report.map */
 815         IEEE80211_BASIC_MAP_BSS = (1 << 0),
 816         IEEE80211_BASIC_MAP_OFDM = (1 << 1),
 817         IEEE80211_BASIC_MAP_UNIDENTIFIED = (1 << 2),
 818         IEEE80211_BASIC_MAP_RADAR = (1 << 3),
 819         IEEE80211_BASIC_MAP_UNMEASURED = (1 << 4),
 820         /* Bits 5-7 are reserved */
 821
 822 };
 823 struct ieee80211_basic_report {
 824         u8 channel;
 825         __le64 start_time;
 826         __le16 duration;
 827         u8 map;
 828 } __attribute__ ((packed));
 829
 830 enum {                          /* ieee80211_measurement_request.mode */
 831         /* Bit 0 is reserved */
 832         IEEE80211_MEASUREMENT_ENABLE = (1 << 1),
 833         IEEE80211_MEASUREMENT_REQUEST = (1 << 2),
 834         IEEE80211_MEASUREMENT_REPORT = (1 << 3),
 835         /* Bits 4-7 are reserved */
 836 };
 837
 838 enum {
 839         IEEE80211_REPORT_BASIC = 0,     /* required */
 840         IEEE80211_REPORT_CCA = 1,       /* optional */
 841         IEEE80211_REPORT_RPI = 2,       /* optional */
 842         /* 3-255 reserved */
 843 };
 844
 845 struct ieee80211_measurement_params {
 846         u8 channel;
 847         __le64 start_time;
 848         __le16 duration;
 849 } __attribute__ ((packed));
 850
 851 struct ieee80211_measurement_request {
 852         struct ieee80211_info_element ie;
 853         u8 token;
 854         u8 mode;
 855         u8 type;
 856         struct ieee80211_measurement_params params[0];
 857 } __attribute__ ((packed));
 858
 859 struct ieee80211_measurement_report {
 860         struct ieee80211_info_element ie;
 861         u8 token;
 862         u8 mode;
 863         u8 type;
 864         union {
 865                 struct ieee80211_basic_report basic[0];
 866         } u;
 867 } __attribute__ ((packed));
 868
 869 struct ieee80211_tpc_report {
 870         u8 transmit_power;
 871         u8 link_margin;
 872 } __attribute__ ((packed));
 873
 874 struct ieee80211_channel_map {
 875         u8 channel;
 876         u8 map;
 877 } __attribute__ ((packed));
 878
 879 struct ieee80211_ibss_dfs {
 880         struct ieee80211_info_element ie;
 881         u8 owner[ETH_ALEN];
 882         u8 recovery_interval;
 883         struct ieee80211_channel_map channel_map[0];
 884 };
 885
 886 struct ieee80211_csa {
 887         u8 mode;
 888         u8 channel;
 889         u8 count;
 890 } __attribute__ ((packed));
 891
 892 struct ieee80211_quiet {
 893         u8 count;
 894         u8 period;
 895         u8 duration;
 896         u8 offset;
 897 } __attribute__ ((packed));
 898
 899 struct ieee80211_network {
 900         /* These entries are used to identify a unique network */
 901         u8 bssid[ETH_ALEN];
 902         u8 channel;
 903         /* Ensure null-terminated for any debug msgs */
 904         u8 ssid[IW_ESSID_MAX_SIZE + 1];
 905         u8 ssid_len;
 906
 907         struct ieee80211_qos_data qos_data;
 908
 909         /* These are network statistics */
 910         struct ieee80211_rx_stats stats;
 911         u16 capability;
 912         u8 rates[MAX_RATES_LENGTH];
 913         u8 rates_len;
 914         u8 rates_ex[MAX_RATES_EX_LENGTH];
 915         u8 rates_ex_len;
 916         unsigned long last_scanned;
 917         u8 mode;
 918         u32 flags;
 919         u32 last_associate;
 920         u32 time_stamp[2];
 921         u16 beacon_interval;
 922         u16 listen_interval;
 923         u16 atim_window;
 924         u8 erp_value;
 925         u8 wpa_ie[MAX_WPA_IE_LEN];
 926         size_t wpa_ie_len;
 927         u8 rsn_ie[MAX_WPA_IE_LEN];
 928         size_t rsn_ie_len;
 929         struct ieee80211_tim_parameters tim;
 930
 931         /* 802.11h info */
 932
 933         /* Power Constraint - mandatory if spctrm mgmt required */
 934         u8 power_constraint;
 935
 936         /* TPC Report - mandatory if spctrm mgmt required */
 937         struct ieee80211_tpc_report tpc_report;
 938
 939         /* IBSS DFS - mandatory if spctrm mgmt required and IBSS
 940          * NOTE: This is variable length and so must be allocated dynamically */
 941         struct ieee80211_ibss_dfs *ibss_dfs;
 942
 943         /* Channel Switch Announcement - optional if spctrm mgmt required */
 944         struct ieee80211_csa csa;
 945
 946         /* Quiet - optional if spctrm mgmt required */
 947         struct ieee80211_quiet quiet;
 948
 949         struct list_head list;
 950 };
 951
 952 enum ieee80211_state {
 953         IEEE80211_UNINITIALIZED = 0,
 954         IEEE80211_INITIALIZED,
 955         IEEE80211_ASSOCIATING,
 956         IEEE80211_ASSOCIATED,
 957         IEEE80211_AUTHENTICATING,
 958         IEEE80211_AUTHENTICATED,
 959         IEEE80211_SHUTDOWN
 960 };
 961
 962 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
 963 #define DEFAULT_FTS 2346
 964
 965 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
 966 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)
 967 #define CFG_IEEE80211_RTS (1<<2)
 968
 969 #define IEEE80211_24GHZ_MIN_CHANNEL 1
 970 #define IEEE80211_24GHZ_MAX_CHANNEL 14
 971 #define IEEE80211_24GHZ_CHANNELS (IEEE80211_24GHZ_MAX_CHANNEL - \
 972                                   IEEE80211_24GHZ_MIN_CHANNEL + 1)
 973
 974 #define IEEE80211_52GHZ_MIN_CHANNEL 34
 975 #define IEEE80211_52GHZ_MAX_CHANNEL 165
 976 #define IEEE80211_52GHZ_CHANNELS (IEEE80211_52GHZ_MAX_CHANNEL - \
 977                                   IEEE80211_52GHZ_MIN_CHANNEL + 1)
 978
 979 enum {
 980         IEEE80211_CH_PASSIVE_ONLY = (1 << 0),
 981         IEEE80211_CH_80211H_RULES = (1 << 1),
 982         IEEE80211_CH_B_ONLY = (1 << 2),
 983         IEEE80211_CH_NO_IBSS = (1 << 3),
 984         IEEE80211_CH_UNIFORM_SPREADING = (1 << 4),
 985         IEEE80211_CH_RADAR_DETECT = (1 << 5),
 986         IEEE80211_CH_INVALID = (1 << 6),
 987 };
 988
 989 struct ieee80211_channel {
 990         u32 freq;       /* in MHz */
 991         u8 channel;
 992         u8 flags;
 993         u8 max_power;   /* in dBm */
 994 };
 995
 996 struct ieee80211_geo {
 997         u8 name[4];
 998         u8 bg_channels;
 999         u8 a_channels;
1000         struct ieee80211_channel bg[IEEE80211_24GHZ_CHANNELS];
1001         struct ieee80211_channel a[IEEE80211_52GHZ_CHANNELS];
1002 };
1003
1004 struct ieee80211_device {
1005         struct net_device *dev;
1006         struct ieee80211_security sec;
1007
1008         /* Bookkeeping structures */
1009         struct net_device_stats stats;
1010         struct ieee80211_stats ieee_stats;
1011
1012         struct ieee80211_geo geo;
1013
1014         /* Probe / Beacon management */
1015         struct list_head network_free_list;
1016         struct list_head network_list;
1017         struct ieee80211_network *networks;
1018         int scans;
1019         int scan_age;
1020
1021         int iw_mode;            /* operating mode (IW_MODE_*) */
1022         struct iw_spy_data spy_data;    /* iwspy support */
1023
1024         spinlock_t lock;
1025
1026         int tx_headroom;        /* Set to size of any additional room needed at front
1027                                  * of allocated Tx SKBs */
1028         u32 config;
1029
1030         /* WEP and other encryption related settings at the device level */
1031         int open_wep;           /* Set to 1 to allow unencrypted frames */
1032
1033         int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
1034                                  * WEP key changes */
1035
1036         /* If the host performs {en,de}cryption, then set to 1 */
1037         int host_encrypt;
1038         int host_encrypt_msdu;
1039         int host_decrypt;
1040         /* host performs multicast decryption */
1041         int host_mc_decrypt;
1042
1043         /* host should strip IV and ICV from protected frames */
1044         /* meaningful only when hardware decryption is being used */
1045         int host_strip_iv_icv;
1046
1047         int host_open_frag;
1048         int host_build_iv;
1049         int ieee802_1x;         /* is IEEE 802.1X used */
1050
1051         /* WPA data */
1052         int wpa_enabled;
1053         int drop_unencrypted;
1054         int privacy_invoked;
1055         size_t wpa_ie_len;
1056         u8 *wpa_ie;
1057
1058         struct list_head crypt_deinit_list;
1059         struct ieee80211_crypt_data *crypt[WEP_KEYS];
1060         int tx_keyidx;          /* default TX key index (crypt[tx_keyidx]) */
1061         struct timer_list crypt_deinit_timer;
1062         int crypt_quiesced;
1063
1064         int bcrx_sta_key;       /* use individual keys to override default keys even
1065                                  * with RX of broad/multicast frames */
1066
1067         /* Fragmentation structures */
1068         struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
1069         unsigned int frag_next_idx;
1070         u16 fts;                /* Fragmentation Threshold */
1071         u16 rts;                /* RTS threshold */
1072
1073         /* Association info */
1074         u8 bssid[ETH_ALEN];
1075
1076         enum ieee80211_state state;
1077
1078         int mode;               /* A, B, G */
1079         int modulation;         /* CCK, OFDM */
1080         int freq_band;          /* 2.4Ghz, 5.2Ghz, Mixed */
1081         int abg_true;           /* ABG flag              */
1082
1083         int perfect_rssi;
1084         int worst_rssi;
1085
1086         u16 prev_seq_ctl;       /* used to drop duplicate frames */
1087
1088         /* Callback functions */
1089         void (*set_security) (struct net_device * dev,
1090                               struct ieee80211_security * sec);
1091         int (*hard_start_xmit) (struct ieee80211_txb * txb,
1092                                 struct net_device * dev, int pri);
1093         int (*reset_port) (struct net_device * dev);
1094         int (*is_queue_full) (struct net_device * dev, int pri);
1095
1096         int (*handle_management) (struct net_device * dev,
1097                                   struct ieee80211_network * network, u16 type);
1098         int (*is_qos_active) (struct net_device *dev, struct sk_buff *skb);
1099
1100         /* Typical STA methods */
1101         int (*handle_auth) (struct net_device * dev,
1102                             struct ieee80211_auth * auth);
1103         int (*handle_deauth) (struct net_device * dev,
1104                               struct ieee80211_deauth * auth);
1105         int (*handle_action) (struct net_device * dev,
1106                               struct ieee80211_action * action,
1107                               struct ieee80211_rx_stats * stats);
1108         int (*handle_disassoc) (struct net_device * dev,
1109                                 struct ieee80211_disassoc * assoc);
1110         int (*handle_beacon) (struct net_device * dev,
1111                               struct ieee80211_beacon * beacon,
1112                               struct ieee80211_network * network);
1113         int (*handle_probe_response) (struct net_device * dev,
1114                                       struct ieee80211_probe_response * resp,
1115                                       struct ieee80211_network * network);
1116         int (*handle_probe_request) (struct net_device * dev,
1117                                      struct ieee80211_probe_request * req,
1118                                      struct ieee80211_rx_stats * stats);
1119         int (*handle_assoc_response) (struct net_device * dev,
1120                                       struct ieee80211_assoc_response * resp,
1121                                       struct ieee80211_network * network);
1122
1123         /* Typical AP methods */
1124         int (*handle_assoc_request) (struct net_device * dev);
1125         int (*handle_reassoc_request) (struct net_device * dev,
1126                                        struct ieee80211_reassoc_request * req);
1127
1128         /* This must be the last item so that it points to the data
1129          * allocated beyond this structure by alloc_ieee80211 */
1130         u8 priv[0];
1131 };
1132
1133 #define IEEE_A            (1<<0)
1134 #define IEEE_B            (1<<1)
1135 #define IEEE_G            (1<<2)
1136 #define IEEE_MODE_MASK    (IEEE_A|IEEE_B|IEEE_G)
1137
1138 static inline void *ieee80211_priv(struct net_device *dev)
1139 {
1140         return ((struct ieee80211_device *)netdev_priv(dev))->priv;
1141 }
1142
1143 static inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
1144 {
1145         /* Single white space is for Linksys APs */
1146         if (essid_len == 1 && essid[0] == ' ')
1147                 return 1;
1148
1149         /* Otherwise, if the entire essid is 0, we assume it is hidden */
1150         while (essid_len) {
1151                 essid_len--;
1152                 if (essid[essid_len] != '\0')
1153                         return 0;
1154         }
1155
1156         return 1;
1157 }
1158
1159 static inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
1160                                           int mode)
1161 {
1162         /*
1163          * It is possible for both access points and our device to support
1164          * combinations of modes, so as long as there is one valid combination
1165          * of ap/device supported modes, then return success
1166          *
1167          */
1168         if ((mode & IEEE_A) &&
1169             (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1170             (ieee->freq_band & IEEE80211_52GHZ_BAND))
1171                 return 1;
1172
1173         if ((mode & IEEE_G) &&
1174             (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1175             (ieee->freq_band & IEEE80211_24GHZ_BAND))
1176                 return 1;
1177
1178         if ((mode & IEEE_B) &&
1179             (ieee->modulation & IEEE80211_CCK_MODULATION) &&
1180             (ieee->freq_band & IEEE80211_24GHZ_BAND))
1181                 return 1;
1182
1183         return 0;
1184 }
1185
1186 static inline int ieee80211_get_hdrlen(u16 fc)
1187 {
1188         int hdrlen = IEEE80211_3ADDR_LEN;
1189         u16 stype = WLAN_FC_GET_STYPE(fc);
1190
1191         switch (WLAN_FC_GET_TYPE(fc)) {
1192         case IEEE80211_FTYPE_DATA:
1193                 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
1194                         hdrlen = IEEE80211_4ADDR_LEN;
1195                 if (stype & IEEE80211_STYPE_QOS_DATA)
1196                         hdrlen += 2;
1197                 break;
1198         case IEEE80211_FTYPE_CTL:
1199                 switch (WLAN_FC_GET_STYPE(fc)) {
1200                 case IEEE80211_STYPE_CTS:
1201                 case IEEE80211_STYPE_ACK:
1202                         hdrlen = IEEE80211_1ADDR_LEN;
1203                         break;
1204                 default:
1205                         hdrlen = IEEE80211_2ADDR_LEN;
1206                         break;
1207                 }
1208                 break;
1209         }
1210
1211         return hdrlen;
1212 }
1213
1214 static inline u8 *ieee80211_get_payload(struct ieee80211_hdr *hdr)
1215 {
1216         switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl))) {
1217         case IEEE80211_1ADDR_LEN:
1218                 return ((struct ieee80211_hdr_1addr *)hdr)->payload;
1219         case IEEE80211_2ADDR_LEN:
1220                 return ((struct ieee80211_hdr_2addr *)hdr)->payload;
1221         case IEEE80211_3ADDR_LEN:
1222                 return ((struct ieee80211_hdr_3addr *)hdr)->payload;
1223         case IEEE80211_4ADDR_LEN:
1224                 return ((struct ieee80211_hdr_4addr *)hdr)->payload;
1225         }
1226         return NULL;
1227 }
1228
1229 static inline int ieee80211_is_ofdm_rate(u8 rate)
1230 {
1231         switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1232         case IEEE80211_OFDM_RATE_6MB:
1233         case IEEE80211_OFDM_RATE_9MB:
1234         case IEEE80211_OFDM_RATE_12MB:
1235         case IEEE80211_OFDM_RATE_18MB:
1236         case IEEE80211_OFDM_RATE_24MB:
1237         case IEEE80211_OFDM_RATE_36MB:
1238         case IEEE80211_OFDM_RATE_48MB:
1239         case IEEE80211_OFDM_RATE_54MB:
1240                 return 1;
1241         }
1242         return 0;
1243 }
1244
1245 static inline int ieee80211_is_cck_rate(u8 rate)
1246 {
1247         switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1248         case IEEE80211_CCK_RATE_1MB:
1249         case IEEE80211_CCK_RATE_2MB:
1250         case IEEE80211_CCK_RATE_5MB:
1251         case IEEE80211_CCK_RATE_11MB:
1252                 return 1;
1253         }
1254         return 0;
1255 }
1256
1257 /* ieee80211.c */
1258 extern void free_ieee80211(struct net_device *dev);
1259 extern struct net_device *alloc_ieee80211(int sizeof_priv);
1260
1261 extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
1262
1263 /* ieee80211_tx.c */
1264 extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
1265 extern void ieee80211_txb_free(struct ieee80211_txb *);
1266 extern int ieee80211_tx_frame(struct ieee80211_device *ieee,
1267                               struct ieee80211_hdr *frame, int hdr_len,
1268                               int total_len, int encrypt_mpdu);
1269
1270 /* ieee80211_rx.c */
1271 extern void ieee80211_rx_any(struct ieee80211_device *ieee,
1272                      struct sk_buff *skb, struct ieee80211_rx_stats *stats);
1273 extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
1274                         struct ieee80211_rx_stats *rx_stats);
1275 /* make sure to set stats->len */
1276 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
1277                              struct ieee80211_hdr_4addr *header,
1278                              struct ieee80211_rx_stats *stats);
1279 extern void ieee80211_network_reset(struct ieee80211_network *network);
1280
1281 /* ieee80211_geo.c */
1282 extern const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device
1283                                                      *ieee);
1284 extern int ieee80211_set_geo(struct ieee80211_device *ieee,
1285                              const struct ieee80211_geo *geo);
1286
1287 extern int ieee80211_is_valid_channel(struct ieee80211_device *ieee,
1288                                       u8 channel);
1289 extern int ieee80211_channel_to_index(struct ieee80211_device *ieee,
1290                                       u8 channel);
1291 extern u8 ieee80211_freq_to_channel(struct ieee80211_device *ieee, u32 freq);
1292 extern u8 ieee80211_get_channel_flags(struct ieee80211_device *ieee,
1293                                       u8 channel);
1294 extern const struct ieee80211_channel *ieee80211_get_channel(struct
1295                                                              ieee80211_device
1296                                                              *ieee, u8 channel);
1297 extern u32 ieee80211_channel_to_freq(struct ieee80211_device * ieee,
1298                                       u8 channel);
1299
1300 /* ieee80211_wx.c */
1301 extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
1302                                  struct iw_request_info *info,
1303                                  union iwreq_data *wrqu, char *key);
1304 extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
1305                                    struct iw_request_info *info,
1306                                    union iwreq_data *wrqu, char *key);
1307 extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
1308                                    struct iw_request_info *info,
1309                                    union iwreq_data *wrqu, char *key);
1310 extern int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
1311                                       struct iw_request_info *info,
1312                                       union iwreq_data *wrqu, char *extra);
1313 extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
1314                                       struct iw_request_info *info,
1315                                       union iwreq_data *wrqu, char *extra);
1316 extern int ieee80211_wx_set_auth(struct net_device *dev,
1317                                  struct iw_request_info *info,
1318                                  union iwreq_data *wrqu,
1319                                  char *extra);
1320 extern int ieee80211_wx_get_auth(struct net_device *dev,
1321                                  struct iw_request_info *info,
1322                                  union iwreq_data *wrqu,
1323                                  char *extra);
1324
1325 static inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
1326 {
1327         ieee->scans++;
1328 }
1329
1330 static inline int ieee80211_get_scans(struct ieee80211_device *ieee)
1331 {
1332         return ieee->scans;
1333 }
1334
1335 #endif                          /* IEEE80211_H */