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 #else
 119 #define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
 120 #endif                          /* CONFIG_IEEE80211_DEBUG */
 121
 122 /* escape_essid() is intended to be used in debug (and possibly error)
 123  * messages. It should never be used for passing essid to user space. */
 124 const char *escape_essid(const char *essid, u8 essid_len);
 125
 126 /*
 127  * To use the debug system:
 128  *
 129  * If you are defining a new debug classification, simply add it to the #define
 130  * list here in the form of:
 131  *
 132  * #define IEEE80211_DL_xxxx VALUE
 133  *
 134  * shifting value to the left one bit from the previous entry.  xxxx should be
 135  * the name of the classification (for example, WEP)
 136  *
 137  * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
 138  * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
 139  * to send output to that classification.
 140  *
 141  * To add your debug level to the list of levels seen when you perform
 142  *
 143  * % cat /proc/net/ieee80211/debug_level
 144  *
 145  * you simply need to add your entry to the ieee80211_debug_level array.
 146  *
 147  * If you do not see debug_level in /proc/net/ieee80211 then you do not have
 148  * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
 149  *
 150  */
 151
 152 #define IEEE80211_DL_INFO          (1<<0)
 153 #define IEEE80211_DL_WX            (1<<1)
 154 #define IEEE80211_DL_SCAN          (1<<2)
 155 #define IEEE80211_DL_STATE         (1<<3)
 156 #define IEEE80211_DL_MGMT          (1<<4)
 157 #define IEEE80211_DL_FRAG          (1<<5)
 158 #define IEEE80211_DL_DROP          (1<<7)
 159
 160 #define IEEE80211_DL_TX            (1<<8)
 161 #define IEEE80211_DL_RX            (1<<9)
 162 #define IEEE80211_DL_QOS           (1<<31)
 163
 164 #define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
 165 #define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
 166 #define IEEE80211_DEBUG_INFO(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
 167
 168 #define IEEE80211_DEBUG_WX(f, a...)     IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
 169 #define IEEE80211_DEBUG_SCAN(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
 170 #define IEEE80211_DEBUG_STATE(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
 171 #define IEEE80211_DEBUG_MGMT(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
 172 #define IEEE80211_DEBUG_FRAG(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
 173 #define IEEE80211_DEBUG_DROP(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
 174 #define IEEE80211_DEBUG_TX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
 175 #define IEEE80211_DEBUG_RX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
 176 #define IEEE80211_DEBUG_QOS(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)
 177 #include <linux/netdevice.h>
 178 #include <linux/wireless.h>
 179 #include <linux/if_arp.h>       /* ARPHRD_ETHER */
 180
 181 #ifndef WIRELESS_SPY
 182 #define WIRELESS_SPY            /* enable iwspy support */
 183 #endif
 184 #include <net/iw_handler.h>     /* new driver API */
 185
 186 #ifndef ETH_P_PAE
 187 #define ETH_P_PAE 0x888E        /* Port Access Entity (IEEE 802.1X) */
 188 #endif                          /* ETH_P_PAE */
 189
 190 #define ETH_P_PREAUTH 0x88C7    /* IEEE 802.11i pre-authentication */
 191
 192 #ifndef ETH_P_80211_RAW
 193 #define ETH_P_80211_RAW (ETH_P_ECONET + 1)
 194 #endif
 195
 196 /* IEEE 802.11 defines */
 197
 198 #define P80211_OUI_LEN 3
 199
 200 struct ieee80211_snap_hdr {
 201
 202         u8 dsap;                /* always 0xAA */
 203         u8 ssap;                /* always 0xAA */
 204         u8 ctrl;                /* always 0x03 */
 205         u8 oui[P80211_OUI_LEN]; /* organizational universal id */
 206
 207 } __attribute__ ((packed));
 208
 209 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
 210
 211 #define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
 212 #define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
 213 #define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
 214
 215 #define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
 216 #define WLAN_GET_SEQ_SEQ(seq)  (((seq) & IEEE80211_SCTL_SEQ) >> 4)
 217
 218 /* Authentication algorithms */
 219 #define WLAN_AUTH_OPEN 0
 220 #define WLAN_AUTH_SHARED_KEY 1
 221 #define WLAN_AUTH_LEAP 2
 222
 223 #define WLAN_AUTH_CHALLENGE_LEN 128
 224
 225 #define WLAN_CAPABILITY_ESS (1<<0)
 226 #define WLAN_CAPABILITY_IBSS (1<<1)
 227 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
 228 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
 229 #define WLAN_CAPABILITY_PRIVACY (1<<4)
 230 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
 231 #define WLAN_CAPABILITY_PBCC (1<<6)
 232 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
 233 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
 234 #define WLAN_CAPABILITY_QOS (1<<9)
 235 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
 236 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
 237
 238 /* 802.11g ERP information element */
 239 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
 240 #define WLAN_ERP_USE_PROTECTION (1<<1)
 241 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
 242
 243 /* Status codes */
 244 enum ieee80211_statuscode {
 245         WLAN_STATUS_SUCCESS = 0,
 246         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
 247         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
 248         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
 249         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
 250         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
 251         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
 252         WLAN_STATUS_CHALLENGE_FAIL = 15,
 253         WLAN_STATUS_AUTH_TIMEOUT = 16,
 254         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
 255         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
 256         /* 802.11b */
 257         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
 258         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
 259         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
 260         /* 802.11h */
 261         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
 262         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
 263         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
 264         /* 802.11g */
 265         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
 266         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
 267         /* 802.11i */
 268         WLAN_STATUS_INVALID_IE = 40,
 269         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
 270         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
 271         WLAN_STATUS_INVALID_AKMP = 43,
 272         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
 273         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
 274         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
 275 };
 276
 277 /* Reason codes */
 278 enum ieee80211_reasoncode {
 279         WLAN_REASON_UNSPECIFIED = 1,
 280         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
 281         WLAN_REASON_DEAUTH_LEAVING = 3,
 282         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
 283         WLAN_REASON_DISASSOC_AP_BUSY = 5,
 284         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
 285         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
 286         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
 287         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
 288         /* 802.11h */
 289         WLAN_REASON_DISASSOC_BAD_POWER = 10,
 290         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
 291         /* 802.11i */
 292         WLAN_REASON_INVALID_IE = 13,
 293         WLAN_REASON_MIC_FAILURE = 14,
 294         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
 295         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
 296         WLAN_REASON_IE_DIFFERENT = 17,
 297         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
 298         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
 299         WLAN_REASON_INVALID_AKMP = 20,
 300         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
 301         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
 302         WLAN_REASON_IEEE8021X_FAILED = 23,
 303         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
 304 };
 305
 306 /* Action categories - 802.11h */
 307 enum ieee80211_actioncategories {
 308         WLAN_ACTION_SPECTRUM_MGMT = 0,
 309         /* Reserved 1-127  */
 310         /* Error    128-255 */
 311 };
 312
 313 /* Action details - 802.11h */
 314 enum ieee80211_actiondetails {
 315         WLAN_ACTION_CATEGORY_MEASURE_REQUEST = 0,
 316         WLAN_ACTION_CATEGORY_MEASURE_REPORT = 1,
 317         WLAN_ACTION_CATEGORY_TPC_REQUEST = 2,
 318         WLAN_ACTION_CATEGORY_TPC_REPORT = 3,
 319         WLAN_ACTION_CATEGORY_CHANNEL_SWITCH = 4,
 320         /* 5 - 255 Reserved */
 321 };
 322
 323 #define IEEE80211_STATMASK_SIGNAL (1<<0)
 324 #define IEEE80211_STATMASK_RSSI (1<<1)
 325 #define IEEE80211_STATMASK_NOISE (1<<2)
 326 #define IEEE80211_STATMASK_RATE (1<<3)
 327 #define IEEE80211_STATMASK_WEMASK 0x7
 328
 329 #define IEEE80211_CCK_MODULATION    (1<<0)
 330 #define IEEE80211_OFDM_MODULATION   (1<<1)
 331
 332 #define IEEE80211_24GHZ_BAND     (1<<0)
 333 #define IEEE80211_52GHZ_BAND     (1<<1)
 334
 335 #define IEEE80211_CCK_RATE_1MB                  0x02
 336 #define IEEE80211_CCK_RATE_2MB                  0x04
 337 #define IEEE80211_CCK_RATE_5MB                  0x0B
 338 #define IEEE80211_CCK_RATE_11MB                 0x16
 339 #define IEEE80211_OFDM_RATE_6MB                 0x0C
 340 #define IEEE80211_OFDM_RATE_9MB                 0x12
 341 #define IEEE80211_OFDM_RATE_12MB                0x18
 342 #define IEEE80211_OFDM_RATE_18MB                0x24
 343 #define IEEE80211_OFDM_RATE_24MB                0x30
 344 #define IEEE80211_OFDM_RATE_36MB                0x48
 345 #define IEEE80211_OFDM_RATE_48MB                0x60
 346 #define IEEE80211_OFDM_RATE_54MB                0x6C
 347 #define IEEE80211_BASIC_RATE_MASK               0x80
 348
 349 #define IEEE80211_CCK_RATE_1MB_MASK             (1<<0)
 350 #define IEEE80211_CCK_RATE_2MB_MASK             (1<<1)
 351 #define IEEE80211_CCK_RATE_5MB_MASK             (1<<2)
 352 #define IEEE80211_CCK_RATE_11MB_MASK            (1<<3)
 353 #define IEEE80211_OFDM_RATE_6MB_MASK            (1<<4)
 354 #define IEEE80211_OFDM_RATE_9MB_MASK            (1<<5)
 355 #define IEEE80211_OFDM_RATE_12MB_MASK           (1<<6)
 356 #define IEEE80211_OFDM_RATE_18MB_MASK           (1<<7)
 357 #define IEEE80211_OFDM_RATE_24MB_MASK           (1<<8)
 358 #define IEEE80211_OFDM_RATE_36MB_MASK           (1<<9)
 359 #define IEEE80211_OFDM_RATE_48MB_MASK           (1<<10)
 360 #define IEEE80211_OFDM_RATE_54MB_MASK           (1<<11)
 361
 362 #define IEEE80211_CCK_RATES_MASK                0x0000000F
 363 #define IEEE80211_CCK_BASIC_RATES_MASK  (IEEE80211_CCK_RATE_1MB_MASK | \
 364         IEEE80211_CCK_RATE_2MB_MASK)
 365 #define IEEE80211_CCK_DEFAULT_RATES_MASK        (IEEE80211_CCK_BASIC_RATES_MASK | \
 366         IEEE80211_CCK_RATE_5MB_MASK | \
 367         IEEE80211_CCK_RATE_11MB_MASK)
 368
 369 #define IEEE80211_OFDM_RATES_MASK               0x00000FF0
 370 #define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
 371         IEEE80211_OFDM_RATE_12MB_MASK | \
 372         IEEE80211_OFDM_RATE_24MB_MASK)
 373 #define IEEE80211_OFDM_DEFAULT_RATES_MASK       (IEEE80211_OFDM_BASIC_RATES_MASK | \
 374         IEEE80211_OFDM_RATE_9MB_MASK  | \
 375         IEEE80211_OFDM_RATE_18MB_MASK | \
 376         IEEE80211_OFDM_RATE_36MB_MASK | \
 377         IEEE80211_OFDM_RATE_48MB_MASK | \
 378         IEEE80211_OFDM_RATE_54MB_MASK)
 379 #define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
 380                                 IEEE80211_CCK_DEFAULT_RATES_MASK)
 381
 382 #define IEEE80211_NUM_OFDM_RATES            8
 383 #define IEEE80211_NUM_CCK_RATES             4
 384 #define IEEE80211_OFDM_SHIFT_MASK_A         4
 385
 386 /* NOTE: This data is for statistical purposes; not all hardware provides this
 387  *       information for frames received.
 388  *       For ieee80211_rx_mgt, you need to set at least the 'len' parameter.
 389  */
 390 struct ieee80211_rx_stats {
 391         u32 mac_time;
 392         s8 rssi;
 393         u8 signal;
 394         u8 noise;
 395         u16 rate;               /* in 100 kbps */
 396         u8 received_channel;
 397         u8 control;
 398         u8 mask;
 399         u8 freq;
 400         u16 len;
 401         u64 tsf;
 402         u32 beacon_time;
 403 };
 404
 405 /* IEEE 802.11 requires that STA supports concurrent reception of at least
 406  * three fragmented frames. This define can be increased to support more
 407  * concurrent frames, but it should be noted that each entry can consume about
 408  * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
 409 #define IEEE80211_FRAG_CACHE_LEN 4
 410
 411 struct ieee80211_frag_entry {
 412         unsigned long first_frag_time;
 413         unsigned int seq;
 414         unsigned int last_frag;
 415         struct sk_buff *skb;
 416         u8 src_addr[ETH_ALEN];
 417         u8 dst_addr[ETH_ALEN];
 418 };
 419
 420 struct ieee80211_stats {
 421         unsigned int tx_unicast_frames;
 422         unsigned int tx_multicast_frames;
 423         unsigned int tx_fragments;
 424         unsigned int tx_unicast_octets;
 425         unsigned int tx_multicast_octets;
 426         unsigned int tx_deferred_transmissions;
 427         unsigned int tx_single_retry_frames;
 428         unsigned int tx_multiple_retry_frames;
 429         unsigned int tx_retry_limit_exceeded;
 430         unsigned int tx_discards;
 431         unsigned int rx_unicast_frames;
 432         unsigned int rx_multicast_frames;
 433         unsigned int rx_fragments;
 434         unsigned int rx_unicast_octets;
 435         unsigned int rx_multicast_octets;
 436         unsigned int rx_fcs_errors;
 437         unsigned int rx_discards_no_buffer;
 438         unsigned int tx_discards_wrong_sa;
 439         unsigned int rx_discards_undecryptable;
 440         unsigned int rx_message_in_msg_fragments;
 441         unsigned int rx_message_in_bad_msg_fragments;
 442 };
 443
 444 struct ieee80211_device;
 445
 446 #include "ieee80211_crypt.h"
 447
 448 #define SEC_KEY_1               (1<<0)
 449 #define SEC_KEY_2               (1<<1)
 450 #define SEC_KEY_3               (1<<2)
 451 #define SEC_KEY_4               (1<<3)
 452 #define SEC_ACTIVE_KEY          (1<<4)
 453 #define SEC_AUTH_MODE           (1<<5)
 454 #define SEC_UNICAST_GROUP       (1<<6)
 455 #define SEC_LEVEL               (1<<7)
 456 #define SEC_ENABLED             (1<<8)
 457 #define SEC_ENCRYPT             (1<<9)
 458
 459 #define SEC_LEVEL_0             0       /* None */
 460 #define SEC_LEVEL_1             1       /* WEP 40 and 104 bit */
 461 #define SEC_LEVEL_2             2       /* Level 1 + TKIP */
 462 #define SEC_LEVEL_2_CKIP        3       /* Level 1 + CKIP */
 463 #define SEC_LEVEL_3             4       /* Level 2 + CCMP */
 464
 465 #define SEC_ALG_NONE            0
 466 #define SEC_ALG_WEP             1
 467 #define SEC_ALG_TKIP            2
 468 #define SEC_ALG_CCMP            3
 469
 470 #define WEP_KEYS                4
 471 #define WEP_KEY_LEN             13
 472 #define SCM_KEY_LEN             32
 473 #define SCM_TEMPORAL_KEY_LENGTH 16
 474
 475 struct ieee80211_security {
 476         u16 active_key:2,
 477             enabled:1,
 478             auth_mode:2, auth_algo:4, unicast_uses_group:1, encrypt:1;
 479         u8 encode_alg[WEP_KEYS];
 480         u8 key_sizes[WEP_KEYS];
 481         u8 keys[WEP_KEYS][SCM_KEY_LEN];
 482         u8 level;
 483         u16 flags;
 484 } __attribute__ ((packed));
 485
 486 /*
 487
 488  802.11 data frame from AP
 489
 490       ,-------------------------------------------------------------------.
 491 Bytes |  2   |  2   |    6    |    6    |    6    |  2   | 0..2312 |   4  |
 492       |------|------|---------|---------|---------|------|---------|------|
 493 Desc. | ctrl | dura |  DA/RA  |   TA    |    SA   | Sequ |  frame  |  fcs |
 494       |      | tion | (BSSID) |         |         | ence |  data   |      |
 495       `-------------------------------------------------------------------'
 496
 497 Total: 28-2340 bytes
 498
 499 */
 500
 501 #define BEACON_PROBE_SSID_ID_POSITION 12
 502
 503 /* Management Frame Information Element Types */
 504 enum ieee80211_mfie {
 505         MFIE_TYPE_SSID = 0,
 506         MFIE_TYPE_RATES = 1,
 507         MFIE_TYPE_FH_SET = 2,
 508         MFIE_TYPE_DS_SET = 3,
 509         MFIE_TYPE_CF_SET = 4,
 510         MFIE_TYPE_TIM = 5,
 511         MFIE_TYPE_IBSS_SET = 6,
 512         MFIE_TYPE_COUNTRY = 7,
 513         MFIE_TYPE_HOP_PARAMS = 8,
 514         MFIE_TYPE_HOP_TABLE = 9,
 515         MFIE_TYPE_REQUEST = 10,
 516         MFIE_TYPE_CHALLENGE = 16,
 517         MFIE_TYPE_POWER_CONSTRAINT = 32,
 518         MFIE_TYPE_POWER_CAPABILITY = 33,
 519         MFIE_TYPE_TPC_REQUEST = 34,
 520         MFIE_TYPE_TPC_REPORT = 35,
 521         MFIE_TYPE_SUPP_CHANNELS = 36,
 522         MFIE_TYPE_CSA = 37,
 523         MFIE_TYPE_MEASURE_REQUEST = 38,
 524         MFIE_TYPE_MEASURE_REPORT = 39,
 525         MFIE_TYPE_QUIET = 40,
 526         MFIE_TYPE_IBSS_DFS = 41,
 527         MFIE_TYPE_ERP_INFO = 42,
 528         MFIE_TYPE_RSN = 48,
 529         MFIE_TYPE_RATES_EX = 50,
 530         MFIE_TYPE_GENERIC = 221,
 531         MFIE_TYPE_QOS_PARAMETER = 222,
 532 };
 533
 534 /* Minimal header; can be used for passing 802.11 frames with sufficient
 535  * information to determine what type of underlying data type is actually
 536  * stored in the data. */
 537 struct ieee80211_hdr {
 538         __le16 frame_ctl;
 539         __le16 duration_id;
 540         u8 payload[0];
 541 } __attribute__ ((packed));
 542
 543 struct ieee80211_hdr_1addr {
 544         __le16 frame_ctl;
 545         __le16 duration_id;
 546         u8 addr1[ETH_ALEN];
 547         u8 payload[0];
 548 } __attribute__ ((packed));
 549
 550 struct ieee80211_hdr_2addr {
 551         __le16 frame_ctl;
 552         __le16 duration_id;
 553         u8 addr1[ETH_ALEN];
 554         u8 addr2[ETH_ALEN];
 555         u8 payload[0];
 556 } __attribute__ ((packed));
 557
 558 struct ieee80211_hdr_3addr {
 559         __le16 frame_ctl;
 560         __le16 duration_id;
 561         u8 addr1[ETH_ALEN];
 562         u8 addr2[ETH_ALEN];
 563         u8 addr3[ETH_ALEN];
 564         __le16 seq_ctl;
 565         u8 payload[0];
 566 } __attribute__ ((packed));
 567
 568 struct ieee80211_hdr_4addr {
 569         __le16 frame_ctl;
 570         __le16 duration_id;
 571         u8 addr1[ETH_ALEN];
 572         u8 addr2[ETH_ALEN];
 573         u8 addr3[ETH_ALEN];
 574         __le16 seq_ctl;
 575         u8 addr4[ETH_ALEN];
 576         u8 payload[0];
 577 } __attribute__ ((packed));
 578
 579 struct ieee80211_hdr_3addrqos {
 580         __le16 frame_ctl;
 581         __le16 duration_id;
 582         u8 addr1[ETH_ALEN];
 583         u8 addr2[ETH_ALEN];
 584         u8 addr3[ETH_ALEN];
 585         __le16 seq_ctl;
 586         u8 payload[0];
 587         __le16 qos_ctl;
 588 } __attribute__ ((packed));
 589
 590 struct ieee80211_hdr_4addrqos {
 591         __le16 frame_ctl;
 592         __le16 duration_id;
 593         u8 addr1[ETH_ALEN];
 594         u8 addr2[ETH_ALEN];
 595         u8 addr3[ETH_ALEN];
 596         __le16 seq_ctl;
 597         u8 addr4[ETH_ALEN];
 598         u8 payload[0];
 599         __le16 qos_ctl;
 600 } __attribute__ ((packed));
 601
 602 struct ieee80211_info_element {
 603         u8 id;
 604         u8 len;
 605         u8 data[0];
 606 } __attribute__ ((packed));
 607
 608 /*
 609  * These are the data types that can make up management packets
 610  *
 611         u16 auth_algorithm;
 612         u16 auth_sequence;
 613         u16 beacon_interval;
 614         u16 capability;
 615         u8 current_ap[ETH_ALEN];
 616         u16 listen_interval;
 617         struct {
 618                 u16 association_id:14, reserved:2;
 619         } __attribute__ ((packed));
 620         u32 time_stamp[2];
 621         u16 reason;
 622         u16 status;
 623 */
 624
 625 struct ieee80211_auth {
 626         struct ieee80211_hdr_3addr header;
 627         __le16 algorithm;
 628         __le16 transaction;
 629         __le16 status;
 630         /* challenge */
 631         struct ieee80211_info_element info_element[0];
 632 } __attribute__ ((packed));
 633
 634 struct ieee80211_channel_switch {
 635         u8 id;
 636         u8 len;
 637         u8 mode;
 638         u8 channel;
 639         u8 count;
 640 } __attribute__ ((packed));
 641
 642 struct ieee80211_action {
 643         struct ieee80211_hdr_3addr header;
 644         u8 category;
 645         u8 action;
 646         union {
 647                 struct ieee80211_action_exchange {
 648                         u8 token;
 649                         struct ieee80211_info_element info_element[0];
 650                 } exchange;
 651                 struct ieee80211_channel_switch channel_switch;
 652
 653         } format;
 654 } __attribute__ ((packed));
 655
 656 struct ieee80211_disassoc {
 657         struct ieee80211_hdr_3addr header;
 658         __le16 reason;
 659 } __attribute__ ((packed));
 660
 661 /* Alias deauth for disassoc */
 662 #define ieee80211_deauth ieee80211_disassoc
 663
 664 struct ieee80211_probe_request {
 665         struct ieee80211_hdr_3addr header;
 666         /* SSID, supported rates */
 667         struct ieee80211_info_element info_element[0];
 668 } __attribute__ ((packed));
 669
 670 struct ieee80211_probe_response {
 671         struct ieee80211_hdr_3addr header;
 672         u32 time_stamp[2];
 673         __le16 beacon_interval;
 674         __le16 capability;
 675         /* SSID, supported rates, FH params, DS params,
 676          * CF params, IBSS params, TIM (if beacon), RSN */
 677         struct ieee80211_info_element info_element[0];
 678 } __attribute__ ((packed));
 679
 680 /* Alias beacon for probe_response */
 681 #define ieee80211_beacon ieee80211_probe_response
 682
 683 struct ieee80211_assoc_request {
 684         struct ieee80211_hdr_3addr header;
 685         __le16 capability;
 686         __le16 listen_interval;
 687         /* SSID, supported rates, RSN */
 688         struct ieee80211_info_element info_element[0];
 689 } __attribute__ ((packed));
 690
 691 struct ieee80211_reassoc_request {
 692         struct ieee80211_hdr_3addr header;
 693         __le16 capability;
 694         __le16 listen_interval;
 695         u8 current_ap[ETH_ALEN];
 696         struct ieee80211_info_element info_element[0];
 697 } __attribute__ ((packed));
 698
 699 struct ieee80211_assoc_response {
 700         struct ieee80211_hdr_3addr header;
 701         __le16 capability;
 702         __le16 status;
 703         __le16 aid;
 704         /* supported rates */
 705         struct ieee80211_info_element info_element[0];
 706 } __attribute__ ((packed));
 707
 708 struct ieee80211_txb {
 709         u8 nr_frags;
 710         u8 encrypted;
 711         u8 rts_included;
 712         u8 reserved;
 713         __le16 frag_size;
 714         __le16 payload_size;
 715         struct sk_buff *fragments[0];
 716 };
 717
 718 /* SWEEP TABLE ENTRIES NUMBER */
 719 #define MAX_SWEEP_TAB_ENTRIES             42
 720 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET  7
 721 /* MAX_RATES_LENGTH needs to be 12.  The spec says 8, and many APs
 722  * only use 8, and then use extended rates for the remaining supported
 723  * rates.  Other APs, however, stick all of their supported rates on the
 724  * main rates information element... */
 725 #define MAX_RATES_LENGTH                  ((u8)12)
 726 #define MAX_RATES_EX_LENGTH               ((u8)16)
 727 #define MAX_NETWORK_COUNT                  128
 728
 729 #define CRC_LENGTH                 4U
 730
 731 #define MAX_WPA_IE_LEN 64
 732
 733 #define NETWORK_EMPTY_ESSID    (1<<0)
 734 #define NETWORK_HAS_OFDM       (1<<1)
 735 #define NETWORK_HAS_CCK        (1<<2)
 736
 737 /* QoS structure */
 738 #define NETWORK_HAS_QOS_PARAMETERS      (1<<3)
 739 #define NETWORK_HAS_QOS_INFORMATION     (1<<4)
 740 #define NETWORK_HAS_QOS_MASK            (NETWORK_HAS_QOS_PARAMETERS | \
 741                                          NETWORK_HAS_QOS_INFORMATION)
 742
 743 /* 802.11h */
 744 #define NETWORK_HAS_POWER_CONSTRAINT    (1<<5)
 745 #define NETWORK_HAS_CSA                 (1<<6)
 746 #define NETWORK_HAS_QUIET               (1<<7)
 747 #define NETWORK_HAS_IBSS_DFS            (1<<8)
 748 #define NETWORK_HAS_TPC_REPORT          (1<<9)
 749
 750 #define NETWORK_HAS_ERP_VALUE           (1<<10)
 751
 752 #define QOS_QUEUE_NUM                   4
 753 #define QOS_OUI_LEN                     3
 754 #define QOS_OUI_TYPE                    2
 755 #define QOS_ELEMENT_ID                  221
 756 #define QOS_OUI_INFO_SUB_TYPE           0
 757 #define QOS_OUI_PARAM_SUB_TYPE          1
 758 #define QOS_VERSION_1                   1
 759 #define QOS_AIFSN_MIN_VALUE             2
 760
 761 struct ieee80211_qos_information_element {
 762         u8 elementID;
 763         u8 length;
 764         u8 qui[QOS_OUI_LEN];
 765         u8 qui_type;
 766         u8 qui_subtype;
 767         u8 version;
 768         u8 ac_info;
 769 } __attribute__ ((packed));
 770
 771 struct ieee80211_qos_ac_parameter {
 772         u8 aci_aifsn;
 773         u8 ecw_min_max;
 774         __le16 tx_op_limit;
 775 } __attribute__ ((packed));
 776
 777 struct ieee80211_qos_parameter_info {
 778         struct ieee80211_qos_information_element info_element;
 779         u8 reserved;
 780         struct ieee80211_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
 781 } __attribute__ ((packed));
 782
 783 struct ieee80211_qos_parameters {
 784         __le16 cw_min[QOS_QUEUE_NUM];
 785         __le16 cw_max[QOS_QUEUE_NUM];
 786         u8 aifs[QOS_QUEUE_NUM];
 787         u8 flag[QOS_QUEUE_NUM];
 788         __le16 tx_op_limit[QOS_QUEUE_NUM];
 789 } __attribute__ ((packed));
 790
 791 struct ieee80211_qos_data {
 792         struct ieee80211_qos_parameters parameters;
 793         int active;
 794         int supported;
 795         u8 param_count;
 796         u8 old_param_count;
 797 };
 798
 799 struct ieee80211_tim_parameters {
 800         u8 tim_count;
 801         u8 tim_period;
 802 } __attribute__ ((packed));
 803
 804 /*******************************************************/
 805
 806 enum {                          /* ieee80211_basic_report.map */
 807         IEEE80211_BASIC_MAP_BSS = (1 << 0),
 808         IEEE80211_BASIC_MAP_OFDM = (1 << 1),
 809         IEEE80211_BASIC_MAP_UNIDENTIFIED = (1 << 2),
 810         IEEE80211_BASIC_MAP_RADAR = (1 << 3),
 811         IEEE80211_BASIC_MAP_UNMEASURED = (1 << 4),
 812         /* Bits 5-7 are reserved */
 813
 814 };
 815 struct ieee80211_basic_report {
 816         u8 channel;
 817         __le64 start_time;
 818         __le16 duration;
 819         u8 map;
 820 } __attribute__ ((packed));
 821
 822 enum {                          /* ieee80211_measurement_request.mode */
 823         /* Bit 0 is reserved */
 824         IEEE80211_MEASUREMENT_ENABLE = (1 << 1),
 825         IEEE80211_MEASUREMENT_REQUEST = (1 << 2),
 826         IEEE80211_MEASUREMENT_REPORT = (1 << 3),
 827         /* Bits 4-7 are reserved */
 828 };
 829
 830 enum {
 831         IEEE80211_REPORT_BASIC = 0,     /* required */
 832         IEEE80211_REPORT_CCA = 1,       /* optional */
 833         IEEE80211_REPORT_RPI = 2,       /* optional */
 834         /* 3-255 reserved */
 835 };
 836
 837 struct ieee80211_measurement_params {
 838         u8 channel;
 839         __le64 start_time;
 840         __le16 duration;
 841 } __attribute__ ((packed));
 842
 843 struct ieee80211_measurement_request {
 844         struct ieee80211_info_element ie;
 845         u8 token;
 846         u8 mode;
 847         u8 type;
 848         struct ieee80211_measurement_params params[0];
 849 } __attribute__ ((packed));
 850
 851 struct ieee80211_measurement_report {
 852         struct ieee80211_info_element ie;
 853         u8 token;
 854         u8 mode;
 855         u8 type;
 856         union {
 857                 struct ieee80211_basic_report basic[0];
 858         } u;
 859 } __attribute__ ((packed));
 860
 861 struct ieee80211_tpc_report {
 862         u8 transmit_power;
 863         u8 link_margin;
 864 } __attribute__ ((packed));
 865
 866 struct ieee80211_channel_map {
 867         u8 channel;
 868         u8 map;
 869 } __attribute__ ((packed));
 870
 871 struct ieee80211_ibss_dfs {
 872         struct ieee80211_info_element ie;
 873         u8 owner[ETH_ALEN];
 874         u8 recovery_interval;
 875         struct ieee80211_channel_map channel_map[0];
 876 };
 877
 878 struct ieee80211_csa {
 879         u8 mode;
 880         u8 channel;
 881         u8 count;
 882 } __attribute__ ((packed));
 883
 884 struct ieee80211_quiet {
 885         u8 count;
 886         u8 period;
 887         u8 duration;
 888         u8 offset;
 889 } __attribute__ ((packed));
 890
 891 struct ieee80211_network {
 892         /* These entries are used to identify a unique network */
 893         u8 bssid[ETH_ALEN];
 894         u8 channel;
 895         /* Ensure null-terminated for any debug msgs */
 896         u8 ssid[IW_ESSID_MAX_SIZE + 1];
 897         u8 ssid_len;
 898
 899         struct ieee80211_qos_data qos_data;
 900
 901         /* These are network statistics */
 902         struct ieee80211_rx_stats stats;
 903         u16 capability;
 904         u8 rates[MAX_RATES_LENGTH];
 905         u8 rates_len;
 906         u8 rates_ex[MAX_RATES_EX_LENGTH];
 907         u8 rates_ex_len;
 908         unsigned long last_scanned;
 909         u8 mode;
 910         u32 flags;
 911         u32 last_associate;
 912         u32 time_stamp[2];
 913         u16 beacon_interval;
 914         u16 listen_interval;
 915         u16 atim_window;
 916         u8 erp_value;
 917         u8 wpa_ie[MAX_WPA_IE_LEN];
 918         size_t wpa_ie_len;
 919         u8 rsn_ie[MAX_WPA_IE_LEN];
 920         size_t rsn_ie_len;
 921         struct ieee80211_tim_parameters tim;
 922
 923         /* 802.11h info */
 924
 925         /* Power Constraint - mandatory if spctrm mgmt required */
 926         u8 power_constraint;
 927
 928         /* TPC Report - mandatory if spctrm mgmt required */
 929         struct ieee80211_tpc_report tpc_report;
 930
 931         /* IBSS DFS - mandatory if spctrm mgmt required and IBSS
 932          * NOTE: This is variable length and so must be allocated dynamically */
 933         struct ieee80211_ibss_dfs *ibss_dfs;
 934
 935         /* Channel Switch Announcement - optional if spctrm mgmt required */
 936         struct ieee80211_csa csa;
 937
 938         /* Quiet - optional if spctrm mgmt required */
 939         struct ieee80211_quiet quiet;
 940
 941         struct list_head list;
 942 };
 943
 944 enum ieee80211_state {
 945         IEEE80211_UNINITIALIZED = 0,
 946         IEEE80211_INITIALIZED,
 947         IEEE80211_ASSOCIATING,
 948         IEEE80211_ASSOCIATED,
 949         IEEE80211_AUTHENTICATING,
 950         IEEE80211_AUTHENTICATED,
 951         IEEE80211_SHUTDOWN
 952 };
 953
 954 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
 955 #define DEFAULT_FTS 2346
 956
 957 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
 958 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)
 959 #define CFG_IEEE80211_RTS (1<<2)
 960
 961 #define IEEE80211_24GHZ_MIN_CHANNEL 1
 962 #define IEEE80211_24GHZ_MAX_CHANNEL 14
 963 #define IEEE80211_24GHZ_CHANNELS (IEEE80211_24GHZ_MAX_CHANNEL - \
 964                                   IEEE80211_24GHZ_MIN_CHANNEL + 1)
 965
 966 #define IEEE80211_52GHZ_MIN_CHANNEL 34
 967 #define IEEE80211_52GHZ_MAX_CHANNEL 165
 968 #define IEEE80211_52GHZ_CHANNELS (IEEE80211_52GHZ_MAX_CHANNEL - \
 969                                   IEEE80211_52GHZ_MIN_CHANNEL + 1)
 970
 971 enum {
 972         IEEE80211_CH_PASSIVE_ONLY = (1 << 0),
 973         IEEE80211_CH_80211H_RULES = (1 << 1),
 974         IEEE80211_CH_B_ONLY = (1 << 2),
 975         IEEE80211_CH_NO_IBSS = (1 << 3),
 976         IEEE80211_CH_UNIFORM_SPREADING = (1 << 4),
 977         IEEE80211_CH_RADAR_DETECT = (1 << 5),
 978         IEEE80211_CH_INVALID = (1 << 6),
 979 };
 980
 981 struct ieee80211_channel {
 982         u32 freq;       /* in MHz */
 983         u8 channel;
 984         u8 flags;
 985         u8 max_power;   /* in dBm */
 986 };
 987
 988 struct ieee80211_geo {
 989         u8 name[4];
 990         u8 bg_channels;
 991         u8 a_channels;
 992         struct ieee80211_channel bg[IEEE80211_24GHZ_CHANNELS];
 993         struct ieee80211_channel a[IEEE80211_52GHZ_CHANNELS];
 994 };
 995
 996 struct ieee80211_device {
 997         struct net_device *dev;
 998         struct ieee80211_security sec;
 999
1000         /* Bookkeeping structures */
1001         struct net_device_stats stats;
1002         struct ieee80211_stats ieee_stats;
1003
1004         struct ieee80211_geo geo;
1005
1006         /* Probe / Beacon management */
1007         struct list_head network_free_list;
1008         struct list_head network_list;
1009         struct ieee80211_network *networks;
1010         int scans;
1011         int scan_age;
1012
1013         int iw_mode;            /* operating mode (IW_MODE_*) */
1014         struct iw_spy_data spy_data;    /* iwspy support */
1015
1016         spinlock_t lock;
1017
1018         int tx_headroom;        /* Set to size of any additional room needed at front
1019                                  * of allocated Tx SKBs */
1020         u32 config;
1021
1022         /* WEP and other encryption related settings at the device level */
1023         int open_wep;           /* Set to 1 to allow unencrypted frames */
1024
1025         int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
1026                                  * WEP key changes */
1027
1028         /* If the host performs {en,de}cryption, then set to 1 */
1029         int host_encrypt;
1030         int host_encrypt_msdu;
1031         int host_decrypt;
1032         /* host performs multicast decryption */
1033         int host_mc_decrypt;
1034
1035         /* host should strip IV and ICV from protected frames */
1036         /* meaningful only when hardware decryption is being used */
1037         int host_strip_iv_icv;
1038
1039         int host_open_frag;
1040         int host_build_iv;
1041         int ieee802_1x;         /* is IEEE 802.1X used */
1042
1043         /* WPA data */
1044         int wpa_enabled;
1045         int drop_unencrypted;
1046         int privacy_invoked;
1047         size_t wpa_ie_len;
1048         u8 *wpa_ie;
1049
1050         struct list_head crypt_deinit_list;
1051         struct ieee80211_crypt_data *crypt[WEP_KEYS];
1052         int tx_keyidx;          /* default TX key index (crypt[tx_keyidx]) */
1053         struct timer_list crypt_deinit_timer;
1054         int crypt_quiesced;
1055
1056         int bcrx_sta_key;       /* use individual keys to override default keys even
1057                                  * with RX of broad/multicast frames */
1058
1059         /* Fragmentation structures */
1060         struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
1061         unsigned int frag_next_idx;
1062         u16 fts;                /* Fragmentation Threshold */
1063         u16 rts;                /* RTS threshold */
1064
1065         /* Association info */
1066         u8 bssid[ETH_ALEN];
1067
1068         enum ieee80211_state state;
1069
1070         int mode;               /* A, B, G */
1071         int modulation;         /* CCK, OFDM */
1072         int freq_band;          /* 2.4Ghz, 5.2Ghz, Mixed */
1073         int abg_true;           /* ABG flag              */
1074
1075         int perfect_rssi;
1076         int worst_rssi;
1077
1078         u16 prev_seq_ctl;       /* used to drop duplicate frames */
1079
1080         /* Callback functions */
1081         void (*set_security) (struct net_device * dev,
1082                               struct ieee80211_security * sec);
1083         int (*hard_start_xmit) (struct ieee80211_txb * txb,
1084                                 struct net_device * dev, int pri);
1085         int (*reset_port) (struct net_device * dev);
1086         int (*is_queue_full) (struct net_device * dev, int pri);
1087
1088         int (*handle_management) (struct net_device * dev,
1089                                   struct ieee80211_network * network, u16 type);
1090         int (*is_qos_active) (struct net_device *dev, struct sk_buff *skb);
1091
1092         /* Typical STA methods */
1093         int (*handle_auth) (struct net_device * dev,
1094                             struct ieee80211_auth * auth);
1095         int (*handle_deauth) (struct net_device * dev,
1096                               struct ieee80211_deauth * auth);
1097         int (*handle_action) (struct net_device * dev,
1098                               struct ieee80211_action * action,
1099                               struct ieee80211_rx_stats * stats);
1100         int (*handle_disassoc) (struct net_device * dev,
1101                                 struct ieee80211_disassoc * assoc);
1102         int (*handle_beacon) (struct net_device * dev,
1103                               struct ieee80211_beacon * beacon,
1104                               struct ieee80211_network * network);
1105         int (*handle_probe_response) (struct net_device * dev,
1106                                       struct ieee80211_probe_response * resp,
1107                                       struct ieee80211_network * network);
1108         int (*handle_probe_request) (struct net_device * dev,
1109                                      struct ieee80211_probe_request * req,
1110                                      struct ieee80211_rx_stats * stats);
1111         int (*handle_assoc_response) (struct net_device * dev,
1112                                       struct ieee80211_assoc_response * resp,
1113                                       struct ieee80211_network * network);
1114
1115         /* Typical AP methods */
1116         int (*handle_assoc_request) (struct net_device * dev);
1117         int (*handle_reassoc_request) (struct net_device * dev,
1118                                        struct ieee80211_reassoc_request * req);
1119
1120         /* This must be the last item so that it points to the data
1121          * allocated beyond this structure by alloc_ieee80211 */
1122         u8 priv[0];
1123 };
1124
1125 #define IEEE_A            (1<<0)
1126 #define IEEE_B            (1<<1)
1127 #define IEEE_G            (1<<2)
1128 #define IEEE_MODE_MASK    (IEEE_A|IEEE_B|IEEE_G)
1129
1130 static inline void *ieee80211_priv(struct net_device *dev)
1131 {
1132         return ((struct ieee80211_device *)netdev_priv(dev))->priv;
1133 }
1134
1135 static inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
1136 {
1137         /* Single white space is for Linksys APs */
1138         if (essid_len == 1 && essid[0] == ' ')
1139                 return 1;
1140
1141         /* Otherwise, if the entire essid is 0, we assume it is hidden */
1142         while (essid_len) {
1143                 essid_len--;
1144                 if (essid[essid_len] != '\0')
1145                         return 0;
1146         }
1147
1148         return 1;
1149 }
1150
1151 static inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
1152                                           int mode)
1153 {
1154         /*
1155          * It is possible for both access points and our device to support
1156          * combinations of modes, so as long as there is one valid combination
1157          * of ap/device supported modes, then return success
1158          *
1159          */
1160         if ((mode & IEEE_A) &&
1161             (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1162             (ieee->freq_band & IEEE80211_52GHZ_BAND))
1163                 return 1;
1164
1165         if ((mode & IEEE_G) &&
1166             (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1167             (ieee->freq_band & IEEE80211_24GHZ_BAND))
1168                 return 1;
1169
1170         if ((mode & IEEE_B) &&
1171             (ieee->modulation & IEEE80211_CCK_MODULATION) &&
1172             (ieee->freq_band & IEEE80211_24GHZ_BAND))
1173                 return 1;
1174
1175         return 0;
1176 }
1177
1178 static inline int ieee80211_get_hdrlen(u16 fc)
1179 {
1180         int hdrlen = IEEE80211_3ADDR_LEN;
1181         u16 stype = WLAN_FC_GET_STYPE(fc);
1182
1183         switch (WLAN_FC_GET_TYPE(fc)) {
1184         case IEEE80211_FTYPE_DATA:
1185                 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
1186                         hdrlen = IEEE80211_4ADDR_LEN;
1187                 if (stype & IEEE80211_STYPE_QOS_DATA)
1188                         hdrlen += 2;
1189                 break;
1190         case IEEE80211_FTYPE_CTL:
1191                 switch (WLAN_FC_GET_STYPE(fc)) {
1192                 case IEEE80211_STYPE_CTS:
1193                 case IEEE80211_STYPE_ACK:
1194                         hdrlen = IEEE80211_1ADDR_LEN;
1195                         break;
1196                 default:
1197                         hdrlen = IEEE80211_2ADDR_LEN;
1198                         break;
1199                 }
1200                 break;
1201         }
1202
1203         return hdrlen;
1204 }
1205
1206 static inline u8 *ieee80211_get_payload(struct ieee80211_hdr *hdr)
1207 {
1208         switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl))) {
1209         case IEEE80211_1ADDR_LEN:
1210                 return ((struct ieee80211_hdr_1addr *)hdr)->payload;
1211         case IEEE80211_2ADDR_LEN:
1212                 return ((struct ieee80211_hdr_2addr *)hdr)->payload;
1213         case IEEE80211_3ADDR_LEN:
1214                 return ((struct ieee80211_hdr_3addr *)hdr)->payload;
1215         case IEEE80211_4ADDR_LEN:
1216                 return ((struct ieee80211_hdr_4addr *)hdr)->payload;
1217         }
1218         return NULL;
1219 }
1220
1221 static inline int ieee80211_is_ofdm_rate(u8 rate)
1222 {
1223         switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1224         case IEEE80211_OFDM_RATE_6MB:
1225         case IEEE80211_OFDM_RATE_9MB:
1226         case IEEE80211_OFDM_RATE_12MB:
1227         case IEEE80211_OFDM_RATE_18MB:
1228         case IEEE80211_OFDM_RATE_24MB:
1229         case IEEE80211_OFDM_RATE_36MB:
1230         case IEEE80211_OFDM_RATE_48MB:
1231         case IEEE80211_OFDM_RATE_54MB:
1232                 return 1;
1233         }
1234         return 0;
1235 }
1236
1237 static inline int ieee80211_is_cck_rate(u8 rate)
1238 {
1239         switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1240         case IEEE80211_CCK_RATE_1MB:
1241         case IEEE80211_CCK_RATE_2MB:
1242         case IEEE80211_CCK_RATE_5MB:
1243         case IEEE80211_CCK_RATE_11MB:
1244                 return 1;
1245         }
1246         return 0;
1247 }
1248
1249 /* ieee80211.c */
1250 extern void free_ieee80211(struct net_device *dev);
1251 extern struct net_device *alloc_ieee80211(int sizeof_priv);
1252
1253 extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
1254
1255 /* ieee80211_tx.c */
1256 extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
1257 extern void ieee80211_txb_free(struct ieee80211_txb *);
1258 extern int ieee80211_tx_frame(struct ieee80211_device *ieee,
1259                               struct ieee80211_hdr *frame, int hdr_len,
1260                               int total_len, int encrypt_mpdu);
1261
1262 /* ieee80211_rx.c */
1263 extern void ieee80211_rx_any(struct ieee80211_device *ieee,
1264                      struct sk_buff *skb, struct ieee80211_rx_stats *stats);
1265 extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
1266                         struct ieee80211_rx_stats *rx_stats);
1267 /* make sure to set stats->len */
1268 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
1269                              struct ieee80211_hdr_4addr *header,
1270                              struct ieee80211_rx_stats *stats);
1271 extern void ieee80211_network_reset(struct ieee80211_network *network);
1272
1273 /* ieee80211_geo.c */
1274 extern const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device
1275                                                      *ieee);
1276 extern int ieee80211_set_geo(struct ieee80211_device *ieee,
1277                              const struct ieee80211_geo *geo);
1278
1279 extern int ieee80211_is_valid_channel(struct ieee80211_device *ieee,
1280                                       u8 channel);
1281 extern int ieee80211_channel_to_index(struct ieee80211_device *ieee,
1282                                       u8 channel);
1283 extern u8 ieee80211_freq_to_channel(struct ieee80211_device *ieee, u32 freq);
1284 extern u8 ieee80211_get_channel_flags(struct ieee80211_device *ieee,
1285                                       u8 channel);
1286 extern const struct ieee80211_channel *ieee80211_get_channel(struct
1287                                                              ieee80211_device
1288                                                              *ieee, u8 channel);
1289 extern u32 ieee80211_channel_to_freq(struct ieee80211_device * ieee,
1290                                       u8 channel);
1291
1292 /* ieee80211_wx.c */
1293 extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
1294                                  struct iw_request_info *info,
1295                                  union iwreq_data *wrqu, char *key);
1296 extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
1297                                    struct iw_request_info *info,
1298                                    union iwreq_data *wrqu, char *key);
1299 extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
1300                                    struct iw_request_info *info,
1301                                    union iwreq_data *wrqu, char *key);
1302 extern int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
1303                                       struct iw_request_info *info,
1304                                       union iwreq_data *wrqu, char *extra);
1305 extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
1306                                       struct iw_request_info *info,
1307                                       union iwreq_data *wrqu, char *extra);
1308 extern int ieee80211_wx_set_auth(struct net_device *dev,
1309                                  struct iw_request_info *info,
1310                                  union iwreq_data *wrqu,
1311                                  char *extra);
1312 extern int ieee80211_wx_get_auth(struct net_device *dev,
1313                                  struct iw_request_info *info,
1314                                  union iwreq_data *wrqu,
1315                                  char *extra);
1316
1317 static inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
1318 {
1319         ieee->scans++;
1320 }
1321
1322 static inline int ieee80211_get_scans(struct ieee80211_device *ieee)
1323 {
1324         return ieee->scans;
1325 }
1326
1327 #endif                          /* IEEE80211_H */