include/net/ieee80211.h

   1 /*
   2  * Merged with mainline ieee80211.h in Aug 2004.  Original ieee802_11
   3  * remains copyright by the original authors
   4  *
   5  * Portions of the merged code are based on Host AP (software wireless
   6  * LAN access point) driver for Intersil Prism2/2.5/3.
   7  *
   8  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   9  * <jkmaline@cc.hut.fi>
  10  * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
  11  *
  12  * Adaption to a generic IEEE 802.11 stack by James Ketrenos
  13  * <jketreno@linux.intel.com>
  14  * Copyright (c) 2004-2005, Intel Corporation
  15  *
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License version 2 as
  18  * published by the Free Software Foundation. See README and COPYING for
  19  * more details.
  20  *
  21  * API Version History
  22  * 1.0.x -- Initial version
  23  * 1.1.x -- Added radiotap, QoS, TIM, ieee80211_geo APIs,
  24  *          various structure changes, and crypto API init method
  25  */
  26 #ifndef IEEE80211_H
  27 #define IEEE80211_H
  28 #include <linux/if_ether.h>     /* ETH_ALEN */
  29 #include <linux/kernel.h>       /* ARRAY_SIZE */
  30 #include <linux/wireless.h>
  31
  32 #define IEEE80211_VERSION "git-1.1.13"
  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 /* debug macros not dependent on CONFIG_IEEE80211_DEBUG */
 123
 124 #define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
 125 #define MAC_ARG(x) ((u8*)(x))[0],((u8*)(x))[1],((u8*)(x))[2],((u8*)(x))[3],((u8*)(x))[4],((u8*)(x))[5]
 126
 127 /* escape_essid() is intended to be used in debug (and possibly error)
 128  * messages. It should never be used for passing essid to user space. */
 129 const char *escape_essid(const char *essid, u8 essid_len);
 130
 131 /*
 132  * To use the debug system:
 133  *
 134  * If you are defining a new debug classification, simply add it to the #define
 135  * list here in the form of:
 136  *
 137  * #define IEEE80211_DL_xxxx VALUE
 138  *
 139  * shifting value to the left one bit from the previous entry.  xxxx should be
 140  * the name of the classification (for example, WEP)
 141  *
 142  * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
 143  * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
 144  * to send output to that classification.
 145  *
 146  * To add your debug level to the list of levels seen when you perform
 147  *
 148  * % cat /proc/net/ieee80211/debug_level
 149  *
 150  * you simply need to add your entry to the ieee80211_debug_level array.
 151  *
 152  * If you do not see debug_level in /proc/net/ieee80211 then you do not have
 153  * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
 154  *
 155  */
 156
 157 #define IEEE80211_DL_INFO          (1<<0)
 158 #define IEEE80211_DL_WX            (1<<1)
 159 #define IEEE80211_DL_SCAN          (1<<2)
 160 #define IEEE80211_DL_STATE         (1<<3)
 161 #define IEEE80211_DL_MGMT          (1<<4)
 162 #define IEEE80211_DL_FRAG          (1<<5)
 163 #define IEEE80211_DL_DROP          (1<<7)
 164
 165 #define IEEE80211_DL_TX            (1<<8)
 166 #define IEEE80211_DL_RX            (1<<9)
 167 #define IEEE80211_DL_QOS           (1<<31)
 168
 169 #define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
 170 #define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
 171 #define IEEE80211_DEBUG_INFO(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
 172
 173 #define IEEE80211_DEBUG_WX(f, a...)     IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
 174 #define IEEE80211_DEBUG_SCAN(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
 175 #define IEEE80211_DEBUG_STATE(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
 176 #define IEEE80211_DEBUG_MGMT(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
 177 #define IEEE80211_DEBUG_FRAG(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
 178 #define IEEE80211_DEBUG_DROP(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
 179 #define IEEE80211_DEBUG_TX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
 180 #define IEEE80211_DEBUG_RX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
 181 #define IEEE80211_DEBUG_QOS(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)
 182 #include <linux/netdevice.h>
 183 #include <linux/wireless.h>
 184 #include <linux/if_arp.h>       /* ARPHRD_ETHER */
 185
 186 #ifndef WIRELESS_SPY
 187 #define WIRELESS_SPY            /* enable iwspy support */
 188 #endif
 189 #include <net/iw_handler.h>     /* new driver API */
 190
 191 #ifndef ETH_P_PAE
 192 #define ETH_P_PAE 0x888E        /* Port Access Entity (IEEE 802.1X) */
 193 #endif                          /* ETH_P_PAE */
 194
 195 #define ETH_P_PREAUTH 0x88C7    /* IEEE 802.11i pre-authentication */
 196
 197 #ifndef ETH_P_80211_RAW
 198 #define ETH_P_80211_RAW (ETH_P_ECONET + 1)
 199 #endif
 200
 201 /* IEEE 802.11 defines */
 202
 203 #define P80211_OUI_LEN 3
 204
 205 struct ieee80211_snap_hdr {
 206
 207         u8 dsap;                /* always 0xAA */
 208         u8 ssap;                /* always 0xAA */
 209         u8 ctrl;                /* always 0x03 */
 210         u8 oui[P80211_OUI_LEN]; /* organizational universal id */
 211
 212 } __attribute__ ((packed));
 213
 214 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
 215
 216 #define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
 217 #define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
 218 #define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
 219
 220 #define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
 221 #define WLAN_GET_SEQ_SEQ(seq)  (((seq) & IEEE80211_SCTL_SEQ) >> 4)
 222
 223 /* Authentication algorithms */
 224 #define WLAN_AUTH_OPEN 0
 225 #define WLAN_AUTH_SHARED_KEY 1
 226 #define WLAN_AUTH_LEAP 2
 227
 228 #define WLAN_AUTH_CHALLENGE_LEN 128
 229
 230 #define WLAN_CAPABILITY_ESS (1<<0)
 231 #define WLAN_CAPABILITY_IBSS (1<<1)
 232 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
 233 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
 234 #define WLAN_CAPABILITY_PRIVACY (1<<4)
 235 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
 236 #define WLAN_CAPABILITY_PBCC (1<<6)
 237 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
 238 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
 239 #define WLAN_CAPABILITY_QOS (1<<9)
 240 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
 241 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
 242
 243 /* 802.11g ERP information element */
 244 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
 245 #define WLAN_ERP_USE_PROTECTION (1<<1)
 246 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
 247
 248 /* Status codes */
 249 enum ieee80211_statuscode {
 250         WLAN_STATUS_SUCCESS = 0,
 251         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
 252         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
 253         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
 254         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
 255         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
 256         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
 257         WLAN_STATUS_CHALLENGE_FAIL = 15,
 258         WLAN_STATUS_AUTH_TIMEOUT = 16,
 259         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
 260         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
 261         /* 802.11b */
 262         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
 263         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
 264         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
 265         /* 802.11h */
 266         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
 267         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
 268         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
 269         /* 802.11g */
 270         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
 271         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
 272         /* 802.11i */
 273         WLAN_STATUS_INVALID_IE = 40,
 274         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
 275         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
 276         WLAN_STATUS_INVALID_AKMP = 43,
 277         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
 278         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
 279         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
 280 };
 281
 282 /* Reason codes */
 283 enum ieee80211_reasoncode {
 284         WLAN_REASON_UNSPECIFIED = 1,
 285         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
 286         WLAN_REASON_DEAUTH_LEAVING = 3,
 287         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
 288         WLAN_REASON_DISASSOC_AP_BUSY = 5,
 289         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
 290         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
 291         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
 292         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
 293         /* 802.11h */
 294         WLAN_REASON_DISASSOC_BAD_POWER = 10,
 295         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
 296         /* 802.11i */
 297         WLAN_REASON_INVALID_IE = 13,
 298         WLAN_REASON_MIC_FAILURE = 14,
 299         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
 300         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
 301         WLAN_REASON_IE_DIFFERENT = 17,
 302         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
 303         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
 304         WLAN_REASON_INVALID_AKMP = 20,
 305         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
 306         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
 307         WLAN_REASON_IEEE8021X_FAILED = 23,
 308         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
 309 };
 310
 311 /* Action categories - 802.11h */
 312 enum ieee80211_actioncategories {
 313         WLAN_ACTION_SPECTRUM_MGMT = 0,
 314         /* Reserved 1-127  */
 315         /* Error    128-255 */
 316 };
 317
 318 /* Action details - 802.11h */
 319 enum ieee80211_actiondetails {
 320         WLAN_ACTION_CATEGORY_MEASURE_REQUEST = 0,
 321         WLAN_ACTION_CATEGORY_MEASURE_REPORT = 1,
 322         WLAN_ACTION_CATEGORY_TPC_REQUEST = 2,
 323         WLAN_ACTION_CATEGORY_TPC_REPORT = 3,
 324         WLAN_ACTION_CATEGORY_CHANNEL_SWITCH = 4,
 325         /* 5 - 255 Reserved */
 326 };
 327
 328 #define IEEE80211_STATMASK_SIGNAL (1<<0)
 329 #define IEEE80211_STATMASK_RSSI (1<<1)
 330 #define IEEE80211_STATMASK_NOISE (1<<2)
 331 #define IEEE80211_STATMASK_RATE (1<<3)
 332 #define IEEE80211_STATMASK_WEMASK 0x7
 333
 334 #define IEEE80211_CCK_MODULATION    (1<<0)
 335 #define IEEE80211_OFDM_MODULATION   (1<<1)
 336
 337 #define IEEE80211_24GHZ_BAND     (1<<0)
 338 #define IEEE80211_52GHZ_BAND     (1<<1)
 339
 340 #define IEEE80211_CCK_RATE_1MB                  0x02
 341 #define IEEE80211_CCK_RATE_2MB                  0x04
 342 #define IEEE80211_CCK_RATE_5MB                  0x0B
 343 #define IEEE80211_CCK_RATE_11MB                 0x16
 344 #define IEEE80211_OFDM_RATE_6MB                 0x0C
 345 #define IEEE80211_OFDM_RATE_9MB                 0x12
 346 #define IEEE80211_OFDM_RATE_12MB                0x18
 347 #define IEEE80211_OFDM_RATE_18MB                0x24
 348 #define IEEE80211_OFDM_RATE_24MB                0x30
 349 #define IEEE80211_OFDM_RATE_36MB                0x48
 350 #define IEEE80211_OFDM_RATE_48MB                0x60
 351 #define IEEE80211_OFDM_RATE_54MB                0x6C
 352 #define IEEE80211_BASIC_RATE_MASK               0x80
 353
 354 #define IEEE80211_CCK_RATE_1MB_MASK             (1<<0)
 355 #define IEEE80211_CCK_RATE_2MB_MASK             (1<<1)
 356 #define IEEE80211_CCK_RATE_5MB_MASK             (1<<2)
 357 #define IEEE80211_CCK_RATE_11MB_MASK            (1<<3)
 358 #define IEEE80211_OFDM_RATE_6MB_MASK            (1<<4)
 359 #define IEEE80211_OFDM_RATE_9MB_MASK            (1<<5)
 360 #define IEEE80211_OFDM_RATE_12MB_MASK           (1<<6)
 361 #define IEEE80211_OFDM_RATE_18MB_MASK           (1<<7)
 362 #define IEEE80211_OFDM_RATE_24MB_MASK           (1<<8)
 363 #define IEEE80211_OFDM_RATE_36MB_MASK           (1<<9)
 364 #define IEEE80211_OFDM_RATE_48MB_MASK           (1<<10)
 365 #define IEEE80211_OFDM_RATE_54MB_MASK           (1<<11)
 366
 367 #define IEEE80211_CCK_RATES_MASK                0x0000000F
 368 #define IEEE80211_CCK_BASIC_RATES_MASK  (IEEE80211_CCK_RATE_1MB_MASK | \
 369         IEEE80211_CCK_RATE_2MB_MASK)
 370 #define IEEE80211_CCK_DEFAULT_RATES_MASK        (IEEE80211_CCK_BASIC_RATES_MASK | \
 371         IEEE80211_CCK_RATE_5MB_MASK | \
 372         IEEE80211_CCK_RATE_11MB_MASK)
 373
 374 #define IEEE80211_OFDM_RATES_MASK               0x00000FF0
 375 #define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
 376         IEEE80211_OFDM_RATE_12MB_MASK | \
 377         IEEE80211_OFDM_RATE_24MB_MASK)
 378 #define IEEE80211_OFDM_DEFAULT_RATES_MASK       (IEEE80211_OFDM_BASIC_RATES_MASK | \
 379         IEEE80211_OFDM_RATE_9MB_MASK  | \
 380         IEEE80211_OFDM_RATE_18MB_MASK | \
 381         IEEE80211_OFDM_RATE_36MB_MASK | \
 382         IEEE80211_OFDM_RATE_48MB_MASK | \
 383         IEEE80211_OFDM_RATE_54MB_MASK)
 384 #define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
 385                                 IEEE80211_CCK_DEFAULT_RATES_MASK)
 386
 387 #define IEEE80211_NUM_OFDM_RATES            8
 388 #define IEEE80211_NUM_CCK_RATES             4
 389 #define IEEE80211_OFDM_SHIFT_MASK_A         4
 390
 391 /* NOTE: This data is for statistical purposes; not all hardware provides this
 392  *       information for frames received.
 393  *       For ieee80211_rx_mgt, you need to set at least the 'len' parameter.
 394  */
 395 struct ieee80211_rx_stats {
 396         u32 mac_time;
 397         s8 rssi;
 398         u8 signal;
 399         u8 noise;
 400         u16 rate;               /* in 100 kbps */
 401         u8 received_channel;
 402         u8 control;
 403         u8 mask;
 404         u8 freq;
 405         u16 len;
 406         u64 tsf;
 407         u32 beacon_time;
 408 };
 409
 410 /* IEEE 802.11 requires that STA supports concurrent reception of at least
 411  * three fragmented frames. This define can be increased to support more
 412  * concurrent frames, but it should be noted that each entry can consume about
 413  * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
 414 #define IEEE80211_FRAG_CACHE_LEN 4
 415
 416 struct ieee80211_frag_entry {
 417         unsigned long first_frag_time;
 418         unsigned int seq;
 419         unsigned int last_frag;
 420         struct sk_buff *skb;
 421         u8 src_addr[ETH_ALEN];
 422         u8 dst_addr[ETH_ALEN];
 423 };
 424
 425 struct ieee80211_stats {
 426         unsigned int tx_unicast_frames;
 427         unsigned int tx_multicast_frames;
 428         unsigned int tx_fragments;
 429         unsigned int tx_unicast_octets;
 430         unsigned int tx_multicast_octets;
 431         unsigned int tx_deferred_transmissions;
 432         unsigned int tx_single_retry_frames;
 433         unsigned int tx_multiple_retry_frames;
 434         unsigned int tx_retry_limit_exceeded;
 435         unsigned int tx_discards;
 436         unsigned int rx_unicast_frames;
 437         unsigned int rx_multicast_frames;
 438         unsigned int rx_fragments;
 439         unsigned int rx_unicast_octets;
 440         unsigned int rx_multicast_octets;
 441         unsigned int rx_fcs_errors;
 442         unsigned int rx_discards_no_buffer;
 443         unsigned int tx_discards_wrong_sa;
 444         unsigned int rx_discards_undecryptable;
 445         unsigned int rx_message_in_msg_fragments;
 446         unsigned int rx_message_in_bad_msg_fragments;
 447 };
 448
 449 struct ieee80211_device;
 450
 451 #include "ieee80211_crypt.h"
 452
 453 #define SEC_KEY_1               (1<<0)
 454 #define SEC_KEY_2               (1<<1)
 455 #define SEC_KEY_3               (1<<2)
 456 #define SEC_KEY_4               (1<<3)
 457 #define SEC_ACTIVE_KEY          (1<<4)
 458 #define SEC_AUTH_MODE           (1<<5)
 459 #define SEC_UNICAST_GROUP       (1<<6)
 460 #define SEC_LEVEL               (1<<7)
 461 #define SEC_ENABLED             (1<<8)
 462 #define SEC_ENCRYPT             (1<<9)
 463
 464 #define SEC_LEVEL_0             0       /* None */
 465 #define SEC_LEVEL_1             1       /* WEP 40 and 104 bit */
 466 #define SEC_LEVEL_2             2       /* Level 1 + TKIP */
 467 #define SEC_LEVEL_2_CKIP        3       /* Level 1 + CKIP */
 468 #define SEC_LEVEL_3             4       /* Level 2 + CCMP */
 469
 470 #define SEC_ALG_NONE            0
 471 #define SEC_ALG_WEP             1
 472 #define SEC_ALG_TKIP            2
 473 #define SEC_ALG_CCMP            3
 474
 475 #define WEP_KEYS                4
 476 #define WEP_KEY_LEN             13
 477 #define SCM_KEY_LEN             32
 478 #define SCM_TEMPORAL_KEY_LENGTH 16
 479
 480 struct ieee80211_security {
 481         u16 active_key:2,
 482             enabled:1,
 483             auth_mode:2, auth_algo:4, unicast_uses_group:1, encrypt:1;
 484         u8 encode_alg[WEP_KEYS];
 485         u8 key_sizes[WEP_KEYS];
 486         u8 keys[WEP_KEYS][SCM_KEY_LEN];
 487         u8 level;
 488         u16 flags;
 489 } __attribute__ ((packed));
 490
 491 /*
 492
 493  802.11 data frame from AP
 494
 495       ,-------------------------------------------------------------------.
 496 Bytes |  2   |  2   |    6    |    6    |    6    |  2   | 0..2312 |   4  |
 497       |------|------|---------|---------|---------|------|---------|------|
 498 Desc. | ctrl | dura |  DA/RA  |   TA    |    SA   | Sequ |  frame  |  fcs |
 499       |      | tion | (BSSID) |         |         | ence |  data   |      |
 500       `-------------------------------------------------------------------'
 501
 502 Total: 28-2340 bytes
 503
 504 */
 505
 506 #define BEACON_PROBE_SSID_ID_POSITION 12
 507
 508 /* Management Frame Information Element Types */
 509 enum ieee80211_mfie {
 510         MFIE_TYPE_SSID = 0,
 511         MFIE_TYPE_RATES = 1,
 512         MFIE_TYPE_FH_SET = 2,
 513         MFIE_TYPE_DS_SET = 3,
 514         MFIE_TYPE_CF_SET = 4,
 515         MFIE_TYPE_TIM = 5,
 516         MFIE_TYPE_IBSS_SET = 6,
 517         MFIE_TYPE_COUNTRY = 7,
 518         MFIE_TYPE_HOP_PARAMS = 8,
 519         MFIE_TYPE_HOP_TABLE = 9,
 520         MFIE_TYPE_REQUEST = 10,
 521         MFIE_TYPE_CHALLENGE = 16,
 522         MFIE_TYPE_POWER_CONSTRAINT = 32,
 523         MFIE_TYPE_POWER_CAPABILITY = 33,
 524         MFIE_TYPE_TPC_REQUEST = 34,
 525         MFIE_TYPE_TPC_REPORT = 35,
 526         MFIE_TYPE_SUPP_CHANNELS = 36,
 527         MFIE_TYPE_CSA = 37,
 528         MFIE_TYPE_MEASURE_REQUEST = 38,
 529         MFIE_TYPE_MEASURE_REPORT = 39,
 530         MFIE_TYPE_QUIET = 40,
 531         MFIE_TYPE_IBSS_DFS = 41,
 532         MFIE_TYPE_ERP_INFO = 42,
 533         MFIE_TYPE_RSN = 48,
 534         MFIE_TYPE_RATES_EX = 50,
 535         MFIE_TYPE_GENERIC = 221,
 536         MFIE_TYPE_QOS_PARAMETER = 222,
 537 };
 538
 539 /* Minimal header; can be used for passing 802.11 frames with sufficient
 540  * information to determine what type of underlying data type is actually
 541  * stored in the data. */
 542 struct ieee80211_hdr {
 543         __le16 frame_ctl;
 544         __le16 duration_id;
 545         u8 payload[0];
 546 } __attribute__ ((packed));
 547
 548 struct ieee80211_hdr_1addr {
 549         __le16 frame_ctl;
 550         __le16 duration_id;
 551         u8 addr1[ETH_ALEN];
 552         u8 payload[0];
 553 } __attribute__ ((packed));
 554
 555 struct ieee80211_hdr_2addr {
 556         __le16 frame_ctl;
 557         __le16 duration_id;
 558         u8 addr1[ETH_ALEN];
 559         u8 addr2[ETH_ALEN];
 560         u8 payload[0];
 561 } __attribute__ ((packed));
 562
 563 struct ieee80211_hdr_3addr {
 564         __le16 frame_ctl;
 565         __le16 duration_id;
 566         u8 addr1[ETH_ALEN];
 567         u8 addr2[ETH_ALEN];
 568         u8 addr3[ETH_ALEN];
 569         __le16 seq_ctl;
 570         u8 payload[0];
 571 } __attribute__ ((packed));
 572
 573 struct ieee80211_hdr_4addr {
 574         __le16 frame_ctl;
 575         __le16 duration_id;
 576         u8 addr1[ETH_ALEN];
 577         u8 addr2[ETH_ALEN];
 578         u8 addr3[ETH_ALEN];
 579         __le16 seq_ctl;
 580         u8 addr4[ETH_ALEN];
 581         u8 payload[0];
 582 } __attribute__ ((packed));
 583
 584 struct ieee80211_hdr_3addrqos {
 585         __le16 frame_ctl;
 586         __le16 duration_id;
 587         u8 addr1[ETH_ALEN];
 588         u8 addr2[ETH_ALEN];
 589         u8 addr3[ETH_ALEN];
 590         __le16 seq_ctl;
 591         u8 payload[0];
 592         __le16 qos_ctl;
 593 } __attribute__ ((packed));
 594
 595 struct ieee80211_hdr_4addrqos {
 596         __le16 frame_ctl;
 597         __le16 duration_id;
 598         u8 addr1[ETH_ALEN];
 599         u8 addr2[ETH_ALEN];
 600         u8 addr3[ETH_ALEN];
 601         __le16 seq_ctl;
 602         u8 addr4[ETH_ALEN];
 603         u8 payload[0];
 604         __le16 qos_ctl;
 605 } __attribute__ ((packed));
 606
 607 struct ieee80211_info_element {
 608         u8 id;
 609         u8 len;
 610         u8 data[0];
 611 } __attribute__ ((packed));
 612
 613 /*
 614  * These are the data types that can make up management packets
 615  *
 616         u16 auth_algorithm;
 617         u16 auth_sequence;
 618         u16 beacon_interval;
 619         u16 capability;
 620         u8 current_ap[ETH_ALEN];
 621         u16 listen_interval;
 622         struct {
 623                 u16 association_id:14, reserved:2;
 624         } __attribute__ ((packed));
 625         u32 time_stamp[2];
 626         u16 reason;
 627         u16 status;
 628 */
 629
 630 struct ieee80211_auth {
 631         struct ieee80211_hdr_3addr header;
 632         __le16 algorithm;
 633         __le16 transaction;
 634         __le16 status;
 635         /* challenge */
 636         struct ieee80211_info_element info_element[0];
 637 } __attribute__ ((packed));
 638
 639 struct ieee80211_channel_switch {
 640         u8 id;
 641         u8 len;
 642         u8 mode;
 643         u8 channel;
 644         u8 count;
 645 } __attribute__ ((packed));
 646
 647 struct ieee80211_action {
 648         struct ieee80211_hdr_3addr header;
 649         u8 category;
 650         u8 action;
 651         union {
 652                 struct ieee80211_action_exchange {
 653                         u8 token;
 654                         struct ieee80211_info_element info_element[0];
 655                 } exchange;
 656                 struct ieee80211_channel_switch channel_switch;
 657
 658         } format;
 659 } __attribute__ ((packed));
 660
 661 struct ieee80211_disassoc {
 662         struct ieee80211_hdr_3addr header;
 663         __le16 reason;
 664 } __attribute__ ((packed));
 665
 666 /* Alias deauth for disassoc */
 667 #define ieee80211_deauth ieee80211_disassoc
 668
 669 struct ieee80211_probe_request {
 670         struct ieee80211_hdr_3addr header;
 671         /* SSID, supported rates */
 672         struct ieee80211_info_element info_element[0];
 673 } __attribute__ ((packed));
 674
 675 struct ieee80211_probe_response {
 676         struct ieee80211_hdr_3addr header;
 677         u32 time_stamp[2];
 678         __le16 beacon_interval;
 679         __le16 capability;
 680         /* SSID, supported rates, FH params, DS params,
 681          * CF params, IBSS params, TIM (if beacon), RSN */
 682         struct ieee80211_info_element info_element[0];
 683 } __attribute__ ((packed));
 684
 685 /* Alias beacon for probe_response */
 686 #define ieee80211_beacon ieee80211_probe_response
 687
 688 struct ieee80211_assoc_request {
 689         struct ieee80211_hdr_3addr header;
 690         __le16 capability;
 691         __le16 listen_interval;
 692         /* SSID, supported rates, RSN */
 693         struct ieee80211_info_element info_element[0];
 694 } __attribute__ ((packed));
 695
 696 struct ieee80211_reassoc_request {
 697         struct ieee80211_hdr_3addr header;
 698         __le16 capability;
 699         __le16 listen_interval;
 700         u8 current_ap[ETH_ALEN];
 701         struct ieee80211_info_element info_element[0];
 702 } __attribute__ ((packed));
 703
 704 struct ieee80211_assoc_response {
 705         struct ieee80211_hdr_3addr header;
 706         __le16 capability;
 707         __le16 status;
 708         __le16 aid;
 709         /* supported rates */
 710         struct ieee80211_info_element info_element[0];
 711 } __attribute__ ((packed));
 712
 713 struct ieee80211_txb {
 714         u8 nr_frags;
 715         u8 encrypted;
 716         u8 rts_included;
 717         u8 reserved;
 718         __le16 frag_size;
 719         __le16 payload_size;
 720         struct sk_buff *fragments[0];
 721 };
 722
 723 /* SWEEP TABLE ENTRIES NUMBER */
 724 #define MAX_SWEEP_TAB_ENTRIES             42
 725 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET  7
 726 /* MAX_RATES_LENGTH needs to be 12.  The spec says 8, and many APs
 727  * only use 8, and then use extended rates for the remaining supported
 728  * rates.  Other APs, however, stick all of their supported rates on the
 729  * main rates information element... */
 730 #define MAX_RATES_LENGTH                  ((u8)12)
 731 #define MAX_RATES_EX_LENGTH               ((u8)16)
 732 #define MAX_NETWORK_COUNT                  128
 733
 734 #define CRC_LENGTH                 4U
 735
 736 #define MAX_WPA_IE_LEN 64
 737
 738 #define NETWORK_EMPTY_ESSID    (1<<0)
 739 #define NETWORK_HAS_OFDM       (1<<1)
 740 #define NETWORK_HAS_CCK        (1<<2)
 741
 742 /* QoS structure */
 743 #define NETWORK_HAS_QOS_PARAMETERS      (1<<3)
 744 #define NETWORK_HAS_QOS_INFORMATION     (1<<4)
 745 #define NETWORK_HAS_QOS_MASK            (NETWORK_HAS_QOS_PARAMETERS | \
 746                                          NETWORK_HAS_QOS_INFORMATION)
 747
 748 /* 802.11h */
 749 #define NETWORK_HAS_POWER_CONSTRAINT    (1<<5)
 750 #define NETWORK_HAS_CSA                 (1<<6)
 751 #define NETWORK_HAS_QUIET               (1<<7)
 752 #define NETWORK_HAS_IBSS_DFS            (1<<8)
 753 #define NETWORK_HAS_TPC_REPORT          (1<<9)
 754
 755 #define NETWORK_HAS_ERP_VALUE           (1<<10)
 756
 757 #define QOS_QUEUE_NUM                   4
 758 #define QOS_OUI_LEN                     3
 759 #define QOS_OUI_TYPE                    2
 760 #define QOS_ELEMENT_ID                  221
 761 #define QOS_OUI_INFO_SUB_TYPE           0
 762 #define QOS_OUI_PARAM_SUB_TYPE          1
 763 #define QOS_VERSION_1                   1
 764 #define QOS_AIFSN_MIN_VALUE             2
 765
 766 struct ieee80211_qos_information_element {
 767         u8 elementID;
 768         u8 length;
 769         u8 qui[QOS_OUI_LEN];
 770         u8 qui_type;
 771         u8 qui_subtype;
 772         u8 version;
 773         u8 ac_info;
 774 } __attribute__ ((packed));
 775
 776 struct ieee80211_qos_ac_parameter {
 777         u8 aci_aifsn;
 778         u8 ecw_min_max;
 779         __le16 tx_op_limit;
 780 } __attribute__ ((packed));
 781
 782 struct ieee80211_qos_parameter_info {
 783         struct ieee80211_qos_information_element info_element;
 784         u8 reserved;
 785         struct ieee80211_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
 786 } __attribute__ ((packed));
 787
 788 struct ieee80211_qos_parameters {
 789         __le16 cw_min[QOS_QUEUE_NUM];
 790         __le16 cw_max[QOS_QUEUE_NUM];
 791         u8 aifs[QOS_QUEUE_NUM];
 792         u8 flag[QOS_QUEUE_NUM];
 793         __le16 tx_op_limit[QOS_QUEUE_NUM];
 794 } __attribute__ ((packed));
 795
 796 struct ieee80211_qos_data {
 797         struct ieee80211_qos_parameters parameters;
 798         int active;
 799         int supported;
 800         u8 param_count;
 801         u8 old_param_count;
 802 };
 803
 804 struct ieee80211_tim_parameters {
 805         u8 tim_count;
 806         u8 tim_period;
 807 } __attribute__ ((packed));
 808
 809 /*******************************************************/
 810
 811 enum {                          /* ieee80211_basic_report.map */
 812         IEEE80211_BASIC_MAP_BSS = (1 << 0),
 813         IEEE80211_BASIC_MAP_OFDM = (1 << 1),
 814         IEEE80211_BASIC_MAP_UNIDENTIFIED = (1 << 2),
 815         IEEE80211_BASIC_MAP_RADAR = (1 << 3),
 816         IEEE80211_BASIC_MAP_UNMEASURED = (1 << 4),
 817         /* Bits 5-7 are reserved */
 818
 819 };
 820 struct ieee80211_basic_report {
 821         u8 channel;
 822         __le64 start_time;
 823         __le16 duration;
 824         u8 map;
 825 } __attribute__ ((packed));
 826
 827 enum {                          /* ieee80211_measurement_request.mode */
 828         /* Bit 0 is reserved */
 829         IEEE80211_MEASUREMENT_ENABLE = (1 << 1),
 830         IEEE80211_MEASUREMENT_REQUEST = (1 << 2),
 831         IEEE80211_MEASUREMENT_REPORT = (1 << 3),
 832         /* Bits 4-7 are reserved */
 833 };
 834
 835 enum {
 836         IEEE80211_REPORT_BASIC = 0,     /* required */
 837         IEEE80211_REPORT_CCA = 1,       /* optional */
 838         IEEE80211_REPORT_RPI = 2,       /* optional */
 839         /* 3-255 reserved */
 840 };
 841
 842 struct ieee80211_measurement_params {
 843         u8 channel;
 844         __le64 start_time;
 845         __le16 duration;
 846 } __attribute__ ((packed));
 847
 848 struct ieee80211_measurement_request {
 849         struct ieee80211_info_element ie;
 850         u8 token;
 851         u8 mode;
 852         u8 type;
 853         struct ieee80211_measurement_params params[0];
 854 } __attribute__ ((packed));
 855
 856 struct ieee80211_measurement_report {
 857         struct ieee80211_info_element ie;
 858         u8 token;
 859         u8 mode;
 860         u8 type;
 861         union {
 862                 struct ieee80211_basic_report basic[0];
 863         } u;
 864 } __attribute__ ((packed));
 865
 866 struct ieee80211_tpc_report {
 867         u8 transmit_power;
 868         u8 link_margin;
 869 } __attribute__ ((packed));
 870
 871 struct ieee80211_channel_map {
 872         u8 channel;
 873         u8 map;
 874 } __attribute__ ((packed));
 875
 876 struct ieee80211_ibss_dfs {
 877         struct ieee80211_info_element ie;
 878         u8 owner[ETH_ALEN];
 879         u8 recovery_interval;
 880         struct ieee80211_channel_map channel_map[0];
 881 };
 882
 883 struct ieee80211_csa {
 884         u8 mode;
 885         u8 channel;
 886         u8 count;
 887 } __attribute__ ((packed));
 888
 889 struct ieee80211_quiet {
 890         u8 count;
 891         u8 period;
 892         u8 duration;
 893         u8 offset;
 894 } __attribute__ ((packed));
 895
 896 struct ieee80211_network {
 897         /* These entries are used to identify a unique network */
 898         u8 bssid[ETH_ALEN];
 899         u8 channel;
 900         /* Ensure null-terminated for any debug msgs */
 901         u8 ssid[IW_ESSID_MAX_SIZE + 1];
 902         u8 ssid_len;
 903
 904         struct ieee80211_qos_data qos_data;
 905
 906         /* These are network statistics */
 907         struct ieee80211_rx_stats stats;
 908         u16 capability;
 909         u8 rates[MAX_RATES_LENGTH];
 910         u8 rates_len;
 911         u8 rates_ex[MAX_RATES_EX_LENGTH];
 912         u8 rates_ex_len;
 913         unsigned long last_scanned;
 914         u8 mode;
 915         u32 flags;
 916         u32 last_associate;
 917         u32 time_stamp[2];
 918         u16 beacon_interval;
 919         u16 listen_interval;
 920         u16 atim_window;
 921         u8 erp_value;
 922         u8 wpa_ie[MAX_WPA_IE_LEN];
 923         size_t wpa_ie_len;
 924         u8 rsn_ie[MAX_WPA_IE_LEN];
 925         size_t rsn_ie_len;
 926         struct ieee80211_tim_parameters tim;
 927
 928         /* 802.11h info */
 929
 930         /* Power Constraint - mandatory if spctrm mgmt required */
 931         u8 power_constraint;
 932
 933         /* TPC Report - mandatory if spctrm mgmt required */
 934         struct ieee80211_tpc_report tpc_report;
 935
 936         /* IBSS DFS - mandatory if spctrm mgmt required and IBSS
 937          * NOTE: This is variable length and so must be allocated dynamically */
 938         struct ieee80211_ibss_dfs *ibss_dfs;
 939
 940         /* Channel Switch Announcement - optional if spctrm mgmt required */
 941         struct ieee80211_csa csa;
 942
 943         /* Quiet - optional if spctrm mgmt required */
 944         struct ieee80211_quiet quiet;
 945
 946         struct list_head list;
 947 };
 948
 949 enum ieee80211_state {
 950         IEEE80211_UNINITIALIZED = 0,
 951         IEEE80211_INITIALIZED,
 952         IEEE80211_ASSOCIATING,
 953         IEEE80211_ASSOCIATED,
 954         IEEE80211_AUTHENTICATING,
 955         IEEE80211_AUTHENTICATED,
 956         IEEE80211_SHUTDOWN
 957 };
 958
 959 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
 960 #define DEFAULT_FTS 2346
 961
 962 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
 963 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)
 964 #define CFG_IEEE80211_RTS (1<<2)
 965
 966 #define IEEE80211_24GHZ_MIN_CHANNEL 1
 967 #define IEEE80211_24GHZ_MAX_CHANNEL 14
 968 #define IEEE80211_24GHZ_CHANNELS (IEEE80211_24GHZ_MAX_CHANNEL - \
 969                                   IEEE80211_24GHZ_MIN_CHANNEL + 1)
 970
 971 #define IEEE80211_52GHZ_MIN_CHANNEL 34
 972 #define IEEE80211_52GHZ_MAX_CHANNEL 165
 973 #define IEEE80211_52GHZ_CHANNELS (IEEE80211_52GHZ_MAX_CHANNEL - \
 974                                   IEEE80211_52GHZ_MIN_CHANNEL + 1)
 975
 976 enum {
 977         IEEE80211_CH_PASSIVE_ONLY = (1 << 0),
 978         IEEE80211_CH_80211H_RULES = (1 << 1),
 979         IEEE80211_CH_B_ONLY = (1 << 2),
 980         IEEE80211_CH_NO_IBSS = (1 << 3),
 981         IEEE80211_CH_UNIFORM_SPREADING = (1 << 4),
 982         IEEE80211_CH_RADAR_DETECT = (1 << 5),
 983         IEEE80211_CH_INVALID = (1 << 6),
 984 };
 985
 986 struct ieee80211_channel {
 987         u32 freq;       /* in MHz */
 988         u8 channel;
 989         u8 flags;
 990         u8 max_power;   /* in dBm */
 991 };
 992
 993 struct ieee80211_geo {
 994         u8 name[4];
 995         u8 bg_channels;
 996         u8 a_channels;
 997         struct ieee80211_channel bg[IEEE80211_24GHZ_CHANNELS];
 998         struct ieee80211_channel a[IEEE80211_52GHZ_CHANNELS];
 999 };
1000
1001 struct ieee80211_device {
1002         struct net_device *dev;
1003         struct ieee80211_security sec;
1004
1005         /* Bookkeeping structures */
1006         struct net_device_stats stats;
1007         struct ieee80211_stats ieee_stats;
1008
1009         struct ieee80211_geo geo;
1010
1011         /* Probe / Beacon management */
1012         struct list_head network_free_list;
1013         struct list_head network_list;
1014         struct ieee80211_network *networks;
1015         int scans;
1016         int scan_age;
1017
1018         int iw_mode;            /* operating mode (IW_MODE_*) */
1019         struct iw_spy_data spy_data;    /* iwspy support */
1020
1021         spinlock_t lock;
1022
1023         int tx_headroom;        /* Set to size of any additional room needed at front
1024                                  * of allocated Tx SKBs */
1025         u32 config;
1026
1027         /* WEP and other encryption related settings at the device level */
1028         int open_wep;           /* Set to 1 to allow unencrypted frames */
1029
1030         int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
1031                                  * WEP key changes */
1032
1033         /* If the host performs {en,de}cryption, then set to 1 */
1034         int host_encrypt;
1035         int host_encrypt_msdu;
1036         int host_decrypt;
1037         /* host performs multicast decryption */
1038         int host_mc_decrypt;
1039
1040         /* host should strip IV and ICV from protected frames */
1041         /* meaningful only when hardware decryption is being used */
1042         int host_strip_iv_icv;
1043
1044         int host_open_frag;
1045         int host_build_iv;
1046         int ieee802_1x;         /* is IEEE 802.1X used */
1047
1048         /* WPA data */
1049         int wpa_enabled;
1050         int drop_unencrypted;
1051         int privacy_invoked;
1052         size_t wpa_ie_len;
1053         u8 *wpa_ie;
1054
1055         struct list_head crypt_deinit_list;
1056         struct ieee80211_crypt_data *crypt[WEP_KEYS];
1057         int tx_keyidx;          /* default TX key index (crypt[tx_keyidx]) */
1058         struct timer_list crypt_deinit_timer;
1059         int crypt_quiesced;
1060
1061         int bcrx_sta_key;       /* use individual keys to override default keys even
1062                                  * with RX of broad/multicast frames */
1063
1064         /* Fragmentation structures */
1065         struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
1066         unsigned int frag_next_idx;
1067         u16 fts;                /* Fragmentation Threshold */
1068         u16 rts;                /* RTS threshold */
1069
1070         /* Association info */
1071         u8 bssid[ETH_ALEN];
1072
1073         enum ieee80211_state state;
1074
1075         int mode;               /* A, B, G */
1076         int modulation;         /* CCK, OFDM */
1077         int freq_band;          /* 2.4Ghz, 5.2Ghz, Mixed */
1078         int abg_true;           /* ABG flag              */
1079
1080         int perfect_rssi;
1081         int worst_rssi;
1082
1083         u16 prev_seq_ctl;       /* used to drop duplicate frames */
1084
1085         /* Callback functions */
1086         void (*set_security) (struct net_device * dev,
1087                               struct ieee80211_security * sec);
1088         int (*hard_start_xmit) (struct ieee80211_txb * txb,
1089                                 struct net_device * dev, int pri);
1090         int (*reset_port) (struct net_device * dev);
1091         int (*is_queue_full) (struct net_device * dev, int pri);
1092
1093         int (*handle_management) (struct net_device * dev,
1094                                   struct ieee80211_network * network, u16 type);
1095         int (*is_qos_active) (struct net_device *dev, struct sk_buff *skb);
1096
1097         /* Typical STA methods */
1098         int (*handle_auth) (struct net_device * dev,
1099                             struct ieee80211_auth * auth);
1100         int (*handle_deauth) (struct net_device * dev,
1101                               struct ieee80211_deauth * auth);
1102         int (*handle_action) (struct net_device * dev,
1103                               struct ieee80211_action * action,
1104                               struct ieee80211_rx_stats * stats);
1105         int (*handle_disassoc) (struct net_device * dev,
1106                                 struct ieee80211_disassoc * assoc);
1107         int (*handle_beacon) (struct net_device * dev,
1108                               struct ieee80211_beacon * beacon,
1109                               struct ieee80211_network * network);
1110         int (*handle_probe_response) (struct net_device * dev,
1111                                       struct ieee80211_probe_response * resp,
1112                                       struct ieee80211_network * network);
1113         int (*handle_probe_request) (struct net_device * dev,
1114                                      struct ieee80211_probe_request * req,
1115                                      struct ieee80211_rx_stats * stats);
1116         int (*handle_assoc_response) (struct net_device * dev,
1117                                       struct ieee80211_assoc_response * resp,
1118                                       struct ieee80211_network * network);
1119
1120         /* Typical AP methods */
1121         int (*handle_assoc_request) (struct net_device * dev);
1122         int (*handle_reassoc_request) (struct net_device * dev,
1123                                        struct ieee80211_reassoc_request * req);
1124
1125         /* This must be the last item so that it points to the data
1126          * allocated beyond this structure by alloc_ieee80211 */
1127         u8 priv[0];
1128 };
1129
1130 #define IEEE_A            (1<<0)
1131 #define IEEE_B            (1<<1)
1132 #define IEEE_G            (1<<2)
1133 #define IEEE_MODE_MASK    (IEEE_A|IEEE_B|IEEE_G)
1134
1135 static inline void *ieee80211_priv(struct net_device *dev)
1136 {
1137         return ((struct ieee80211_device *)netdev_priv(dev))->priv;
1138 }
1139
1140 static inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
1141 {
1142         /* Single white space is for Linksys APs */
1143         if (essid_len == 1 && essid[0] == ' ')
1144                 return 1;
1145
1146         /* Otherwise, if the entire essid is 0, we assume it is hidden */
1147         while (essid_len) {
1148                 essid_len--;
1149                 if (essid[essid_len] != '\0')
1150                         return 0;
1151         }
1152
1153         return 1;
1154 }
1155
1156 static inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
1157                                           int mode)
1158 {
1159         /*
1160          * It is possible for both access points and our device to support
1161          * combinations of modes, so as long as there is one valid combination
1162          * of ap/device supported modes, then return success
1163          *
1164          */
1165         if ((mode & IEEE_A) &&
1166             (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1167             (ieee->freq_band & IEEE80211_52GHZ_BAND))
1168                 return 1;
1169
1170         if ((mode & IEEE_G) &&
1171             (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1172             (ieee->freq_band & IEEE80211_24GHZ_BAND))
1173                 return 1;
1174
1175         if ((mode & IEEE_B) &&
1176             (ieee->modulation & IEEE80211_CCK_MODULATION) &&
1177             (ieee->freq_band & IEEE80211_24GHZ_BAND))
1178                 return 1;
1179
1180         return 0;
1181 }
1182
1183 static inline int ieee80211_get_hdrlen(u16 fc)
1184 {
1185         int hdrlen = IEEE80211_3ADDR_LEN;
1186         u16 stype = WLAN_FC_GET_STYPE(fc);
1187
1188         switch (WLAN_FC_GET_TYPE(fc)) {
1189         case IEEE80211_FTYPE_DATA:
1190                 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
1191                         hdrlen = IEEE80211_4ADDR_LEN;
1192                 if (stype & IEEE80211_STYPE_QOS_DATA)
1193                         hdrlen += 2;
1194                 break;
1195         case IEEE80211_FTYPE_CTL:
1196                 switch (WLAN_FC_GET_STYPE(fc)) {
1197                 case IEEE80211_STYPE_CTS:
1198                 case IEEE80211_STYPE_ACK:
1199                         hdrlen = IEEE80211_1ADDR_LEN;
1200                         break;
1201                 default:
1202                         hdrlen = IEEE80211_2ADDR_LEN;
1203                         break;
1204                 }
1205                 break;
1206         }
1207
1208         return hdrlen;
1209 }
1210
1211 static inline u8 *ieee80211_get_payload(struct ieee80211_hdr *hdr)
1212 {
1213         switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl))) {
1214         case IEEE80211_1ADDR_LEN:
1215                 return ((struct ieee80211_hdr_1addr *)hdr)->payload;
1216         case IEEE80211_2ADDR_LEN:
1217                 return ((struct ieee80211_hdr_2addr *)hdr)->payload;
1218         case IEEE80211_3ADDR_LEN:
1219                 return ((struct ieee80211_hdr_3addr *)hdr)->payload;
1220         case IEEE80211_4ADDR_LEN:
1221                 return ((struct ieee80211_hdr_4addr *)hdr)->payload;
1222         }
1223         return NULL;
1224 }
1225
1226 static inline int ieee80211_is_ofdm_rate(u8 rate)
1227 {
1228         switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1229         case IEEE80211_OFDM_RATE_6MB:
1230         case IEEE80211_OFDM_RATE_9MB:
1231         case IEEE80211_OFDM_RATE_12MB:
1232         case IEEE80211_OFDM_RATE_18MB:
1233         case IEEE80211_OFDM_RATE_24MB:
1234         case IEEE80211_OFDM_RATE_36MB:
1235         case IEEE80211_OFDM_RATE_48MB:
1236         case IEEE80211_OFDM_RATE_54MB:
1237                 return 1;
1238         }
1239         return 0;
1240 }
1241
1242 static inline int ieee80211_is_cck_rate(u8 rate)
1243 {
1244         switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1245         case IEEE80211_CCK_RATE_1MB:
1246         case IEEE80211_CCK_RATE_2MB:
1247         case IEEE80211_CCK_RATE_5MB:
1248         case IEEE80211_CCK_RATE_11MB:
1249                 return 1;
1250         }
1251         return 0;
1252 }
1253
1254 /* ieee80211.c */
1255 extern void free_ieee80211(struct net_device *dev);
1256 extern struct net_device *alloc_ieee80211(int sizeof_priv);
1257
1258 extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
1259
1260 /* ieee80211_tx.c */
1261 extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
1262 extern void ieee80211_txb_free(struct ieee80211_txb *);
1263 extern int ieee80211_tx_frame(struct ieee80211_device *ieee,
1264                               struct ieee80211_hdr *frame, int hdr_len,
1265                               int total_len, int encrypt_mpdu);
1266
1267 /* ieee80211_rx.c */
1268 extern void ieee80211_rx_any(struct ieee80211_device *ieee,
1269                      struct sk_buff *skb, struct ieee80211_rx_stats *stats);
1270 extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
1271                         struct ieee80211_rx_stats *rx_stats);
1272 /* make sure to set stats->len */
1273 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
1274                              struct ieee80211_hdr_4addr *header,
1275                              struct ieee80211_rx_stats *stats);
1276 extern void ieee80211_network_reset(struct ieee80211_network *network);
1277
1278 /* ieee80211_geo.c */
1279 extern const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device
1280                                                      *ieee);
1281 extern int ieee80211_set_geo(struct ieee80211_device *ieee,
1282                              const struct ieee80211_geo *geo);
1283
1284 extern int ieee80211_is_valid_channel(struct ieee80211_device *ieee,
1285                                       u8 channel);
1286 extern int ieee80211_channel_to_index(struct ieee80211_device *ieee,
1287                                       u8 channel);
1288 extern u8 ieee80211_freq_to_channel(struct ieee80211_device *ieee, u32 freq);
1289 extern u8 ieee80211_get_channel_flags(struct ieee80211_device *ieee,
1290                                       u8 channel);
1291 extern const struct ieee80211_channel *ieee80211_get_channel(struct
1292                                                              ieee80211_device
1293                                                              *ieee, u8 channel);
1294
1295 /* ieee80211_wx.c */
1296 extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
1297                                  struct iw_request_info *info,
1298                                  union iwreq_data *wrqu, char *key);
1299 extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
1300                                    struct iw_request_info *info,
1301                                    union iwreq_data *wrqu, char *key);
1302 extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
1303                                    struct iw_request_info *info,
1304                                    union iwreq_data *wrqu, char *key);
1305 extern int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
1306                                       struct iw_request_info *info,
1307                                       union iwreq_data *wrqu, char *extra);
1308 extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
1309                                       struct iw_request_info *info,
1310                                       union iwreq_data *wrqu, char *extra);
1311 extern int ieee80211_wx_set_auth(struct net_device *dev,
1312                                  struct iw_request_info *info,
1313                                  union iwreq_data *wrqu,
1314                                  char *extra);
1315 extern int ieee80211_wx_get_auth(struct net_device *dev,
1316                                  struct iw_request_info *info,
1317                                  union iwreq_data *wrqu,
1318                                  char *extra);
1319
1320 static inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
1321 {
1322         ieee->scans++;
1323 }
1324
1325 static inline int ieee80211_get_scans(struct ieee80211_device *ieee)
1326 {
1327         return ieee->scans;
1328 }
1329
1330 #endif                          /* IEEE80211_H */