include/net/ieee80211.h

   1 /*
   2  * Merged with mainline ieee80211.h in Aug 2004.  Original ieee802_11
   3  * remains copyright by the original authors
   4  *
   5  * Portions of the merged code are based on Host AP (software wireless
   6  * LAN access point) driver for Intersil Prism2/2.5/3.
   7  *
   8  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   9  * <j@w1.fi>
  10  * Copyright (c) 2002-2003, Jouni Malinen <j@w1.fi>
  11  *
  12  * Adaption to a generic IEEE 802.11 stack by James Ketrenos
  13  * <jketreno@linux.intel.com>
  14  * Copyright (c) 2004-2005, Intel Corporation
  15  *
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License version 2 as
  18  * published by the Free Software Foundation. See README and COPYING for
  19  * more details.
  20  *
  21  * API Version History
  22  * 1.0.x -- Initial version
  23  * 1.1.x -- Added radiotap, QoS, TIM, ieee80211_geo APIs,
  24  *          various structure changes, and crypto API init method
  25  */
  26 #ifndef IEEE80211_H
  27 #define IEEE80211_H
  28 #include <linux/if_ether.h>     /* ETH_ALEN */
  29 #include <linux/kernel.h>       /* ARRAY_SIZE */
  30 #include <linux/wireless.h>
  31
  32 #define IEEE80211_VERSION "git-1.1.13"
  33
  34 #define IEEE80211_DATA_LEN              2304
  35 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
  36    6.2.1.1.2.
  37
  38    The figure in section 7.1.2 suggests a body size of up to 2312
  39    bytes is allowed, which is a bit confusing, I suspect this
  40    represents the 2304 bytes of real data, plus a possible 8 bytes of
  41    WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
  42
  43 #define IEEE80211_1ADDR_LEN 10
  44 #define IEEE80211_2ADDR_LEN 16
  45 #define IEEE80211_3ADDR_LEN 24
  46 #define IEEE80211_4ADDR_LEN 30
  47 #define IEEE80211_FCS_LEN    4
  48 #define IEEE80211_HLEN                  (IEEE80211_4ADDR_LEN)
  49 #define IEEE80211_FRAME_LEN             (IEEE80211_DATA_LEN + IEEE80211_HLEN)
  50
  51 #define MIN_FRAG_THRESHOLD     256U
  52 #define MAX_FRAG_THRESHOLD     2346U
  53
  54 /* Frame control field constants */
  55 #define IEEE80211_FCTL_VERS             0x0003
  56 #define IEEE80211_FCTL_FTYPE            0x000c
  57 #define IEEE80211_FCTL_STYPE            0x00f0
  58 #define IEEE80211_FCTL_TODS             0x0100
  59 #define IEEE80211_FCTL_FROMDS           0x0200
  60 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  61 #define IEEE80211_FCTL_RETRY            0x0800
  62 #define IEEE80211_FCTL_PM               0x1000
  63 #define IEEE80211_FCTL_MOREDATA         0x2000
  64 #define IEEE80211_FCTL_PROTECTED        0x4000
  65 #define IEEE80211_FCTL_ORDER            0x8000
  66
  67 #define IEEE80211_FTYPE_MGMT            0x0000
  68 #define IEEE80211_FTYPE_CTL             0x0004
  69 #define IEEE80211_FTYPE_DATA            0x0008
  70
  71 /* management */
  72 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  73 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  74 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  75 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  76 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  77 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  78 #define IEEE80211_STYPE_BEACON          0x0080
  79 #define IEEE80211_STYPE_ATIM            0x0090
  80 #define IEEE80211_STYPE_DISASSOC        0x00A0
  81 #define IEEE80211_STYPE_AUTH            0x00B0
  82 #define IEEE80211_STYPE_DEAUTH          0x00C0
  83 #define IEEE80211_STYPE_ACTION          0x00D0
  84
  85 /* control */
  86 #define IEEE80211_STYPE_PSPOLL          0x00A0
  87 #define IEEE80211_STYPE_RTS             0x00B0
  88 #define IEEE80211_STYPE_CTS             0x00C0
  89 #define IEEE80211_STYPE_ACK             0x00D0
  90 #define IEEE80211_STYPE_CFEND           0x00E0
  91 #define IEEE80211_STYPE_CFENDACK        0x00F0
  92
  93 /* data */
  94 #define IEEE80211_STYPE_DATA            0x0000
  95 #define IEEE80211_STYPE_DATA_CFACK      0x0010
  96 #define IEEE80211_STYPE_DATA_CFPOLL     0x0020
  97 #define IEEE80211_STYPE_DATA_CFACKPOLL  0x0030
  98 #define IEEE80211_STYPE_NULLFUNC        0x0040
  99 #define IEEE80211_STYPE_CFACK           0x0050
 100 #define IEEE80211_STYPE_CFPOLL          0x0060
 101 #define IEEE80211_STYPE_CFACKPOLL       0x0070
 102 #define IEEE80211_STYPE_QOS_DATA        0x0080
 103
 104 #define IEEE80211_SCTL_FRAG             0x000F
 105 #define IEEE80211_SCTL_SEQ              0xFFF0
 106
 107 /* QOS control */
 108 #define IEEE80211_QCTL_TID              0x000F
 109
 110 /* debug macros */
 111
 112 #ifdef CONFIG_IEEE80211_DEBUG
 113 extern u32 ieee80211_debug_level;
 114 #define IEEE80211_DEBUG(level, fmt, args...) \
 115 do { if (ieee80211_debug_level & (level)) \
 116   printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
 117          in_interrupt() ? 'I' : 'U', __FUNCTION__ , ## args); } while (0)
 118 static inline bool ieee80211_ratelimit_debug(u32 level)
 119 {
 120         return (ieee80211_debug_level & level) && net_ratelimit();
 121 }
 122 #else
 123 #define IEEE80211_DEBUG(level, fmt, args...) do {} while (0)
 124 static inline bool ieee80211_ratelimit_debug(u32 level)
 125 {
 126         return false;
 127 }
 128 #endif                          /* CONFIG_IEEE80211_DEBUG */
 129
 130 /* escape_essid() is intended to be used in debug (and possibly error)
 131  * messages. It should never be used for passing essid to user space. */
 132 const char *escape_essid(const char *essid, u8 essid_len);
 133
 134 /*
 135  * To use the debug system:
 136  *
 137  * If you are defining a new debug classification, simply add it to the #define
 138  * list here in the form of:
 139  *
 140  * #define IEEE80211_DL_xxxx VALUE
 141  *
 142  * shifting value to the left one bit from the previous entry.  xxxx should be
 143  * the name of the classification (for example, WEP)
 144  *
 145  * You then need to either add a IEEE80211_xxxx_DEBUG() macro definition for your
 146  * classification, or use IEEE80211_DEBUG(IEEE80211_DL_xxxx, ...) whenever you want
 147  * to send output to that classification.
 148  *
 149  * To add your debug level to the list of levels seen when you perform
 150  *
 151  * % cat /proc/net/ieee80211/debug_level
 152  *
 153  * you simply need to add your entry to the ieee80211_debug_level array.
 154  *
 155  * If you do not see debug_level in /proc/net/ieee80211 then you do not have
 156  * CONFIG_IEEE80211_DEBUG defined in your kernel configuration
 157  *
 158  */
 159
 160 #define IEEE80211_DL_INFO          (1<<0)
 161 #define IEEE80211_DL_WX            (1<<1)
 162 #define IEEE80211_DL_SCAN          (1<<2)
 163 #define IEEE80211_DL_STATE         (1<<3)
 164 #define IEEE80211_DL_MGMT          (1<<4)
 165 #define IEEE80211_DL_FRAG          (1<<5)
 166 #define IEEE80211_DL_DROP          (1<<7)
 167
 168 #define IEEE80211_DL_TX            (1<<8)
 169 #define IEEE80211_DL_RX            (1<<9)
 170 #define IEEE80211_DL_QOS           (1<<31)
 171
 172 #define IEEE80211_ERROR(f, a...) printk(KERN_ERR "ieee80211: " f, ## a)
 173 #define IEEE80211_WARNING(f, a...) printk(KERN_WARNING "ieee80211: " f, ## a)
 174 #define IEEE80211_DEBUG_INFO(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_INFO, f, ## a)
 175
 176 #define IEEE80211_DEBUG_WX(f, a...)     IEEE80211_DEBUG(IEEE80211_DL_WX, f, ## a)
 177 #define IEEE80211_DEBUG_SCAN(f, a...)   IEEE80211_DEBUG(IEEE80211_DL_SCAN, f, ## a)
 178 #define IEEE80211_DEBUG_STATE(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_STATE, f, ## a)
 179 #define IEEE80211_DEBUG_MGMT(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_MGMT, f, ## a)
 180 #define IEEE80211_DEBUG_FRAG(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_FRAG, f, ## a)
 181 #define IEEE80211_DEBUG_DROP(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_DROP, f, ## a)
 182 #define IEEE80211_DEBUG_TX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_TX, f, ## a)
 183 #define IEEE80211_DEBUG_RX(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_RX, f, ## a)
 184 #define IEEE80211_DEBUG_QOS(f, a...)  IEEE80211_DEBUG(IEEE80211_DL_QOS, f, ## a)
 185 #include <linux/netdevice.h>
 186 #include <linux/if_arp.h>       /* ARPHRD_ETHER */
 187
 188 #ifndef WIRELESS_SPY
 189 #define WIRELESS_SPY            /* enable iwspy support */
 190 #endif
 191 #include <net/iw_handler.h>     /* new driver API */
 192
 193 #ifndef ETH_P_PAE
 194 #define ETH_P_PAE 0x888E        /* Port Access Entity (IEEE 802.1X) */
 195 #endif                          /* ETH_P_PAE */
 196
 197 #define ETH_P_PREAUTH 0x88C7    /* IEEE 802.11i pre-authentication */
 198
 199 #ifndef ETH_P_80211_RAW
 200 #define ETH_P_80211_RAW (ETH_P_ECONET + 1)
 201 #endif
 202
 203 /* IEEE 802.11 defines */
 204
 205 #define P80211_OUI_LEN 3
 206
 207 struct ieee80211_snap_hdr {
 208
 209         u8 dsap;                /* always 0xAA */
 210         u8 ssap;                /* always 0xAA */
 211         u8 ctrl;                /* always 0x03 */
 212         u8 oui[P80211_OUI_LEN]; /* organizational universal id */
 213
 214 } __attribute__ ((packed));
 215
 216 #define SNAP_SIZE sizeof(struct ieee80211_snap_hdr)
 217
 218 #define WLAN_FC_GET_VERS(fc) ((fc) & IEEE80211_FCTL_VERS)
 219 #define WLAN_FC_GET_TYPE(fc) ((fc) & IEEE80211_FCTL_FTYPE)
 220 #define WLAN_FC_GET_STYPE(fc) ((fc) & IEEE80211_FCTL_STYPE)
 221
 222 #define WLAN_GET_SEQ_FRAG(seq) ((seq) & IEEE80211_SCTL_FRAG)
 223 #define WLAN_GET_SEQ_SEQ(seq)  (((seq) & IEEE80211_SCTL_SEQ) >> 4)
 224
 225 /* Authentication algorithms */
 226 #define WLAN_AUTH_OPEN 0
 227 #define WLAN_AUTH_SHARED_KEY 1
 228 #define WLAN_AUTH_LEAP 2
 229
 230 #define WLAN_AUTH_CHALLENGE_LEN 128
 231
 232 #define WLAN_CAPABILITY_ESS (1<<0)
 233 #define WLAN_CAPABILITY_IBSS (1<<1)
 234 #define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
 235 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
 236 #define WLAN_CAPABILITY_PRIVACY (1<<4)
 237 #define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
 238 #define WLAN_CAPABILITY_PBCC (1<<6)
 239 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
 240 #define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
 241 #define WLAN_CAPABILITY_QOS (1<<9)
 242 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
 243 #define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
 244
 245 /* 802.11g ERP information element */
 246 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
 247 #define WLAN_ERP_USE_PROTECTION (1<<1)
 248 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
 249
 250 /* Status codes */
 251 enum ieee80211_statuscode {
 252         WLAN_STATUS_SUCCESS = 0,
 253         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
 254         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
 255         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
 256         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
 257         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
 258         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
 259         WLAN_STATUS_CHALLENGE_FAIL = 15,
 260         WLAN_STATUS_AUTH_TIMEOUT = 16,
 261         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
 262         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
 263         /* 802.11b */
 264         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
 265         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
 266         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
 267         /* 802.11h */
 268         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
 269         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
 270         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
 271         /* 802.11g */
 272         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
 273         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
 274         /* 802.11i */
 275         WLAN_STATUS_INVALID_IE = 40,
 276         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
 277         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
 278         WLAN_STATUS_INVALID_AKMP = 43,
 279         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
 280         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
 281         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
 282 };
 283
 284 /* Reason codes */
 285 enum ieee80211_reasoncode {
 286         WLAN_REASON_UNSPECIFIED = 1,
 287         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
 288         WLAN_REASON_DEAUTH_LEAVING = 3,
 289         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
 290         WLAN_REASON_DISASSOC_AP_BUSY = 5,
 291         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
 292         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
 293         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
 294         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
 295         /* 802.11h */
 296         WLAN_REASON_DISASSOC_BAD_POWER = 10,
 297         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
 298         /* 802.11i */
 299         WLAN_REASON_INVALID_IE = 13,
 300         WLAN_REASON_MIC_FAILURE = 14,
 301         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
 302         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
 303         WLAN_REASON_IE_DIFFERENT = 17,
 304         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
 305         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
 306         WLAN_REASON_INVALID_AKMP = 20,
 307         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
 308         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
 309         WLAN_REASON_IEEE8021X_FAILED = 23,
 310         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
 311 };
 312
 313 /* Action categories - 802.11h */
 314 enum ieee80211_actioncategories {
 315         WLAN_ACTION_SPECTRUM_MGMT = 0,
 316         /* Reserved 1-127  */
 317         /* Error    128-255 */
 318 };
 319
 320 /* Action details - 802.11h */
 321 enum ieee80211_actiondetails {
 322         WLAN_ACTION_CATEGORY_MEASURE_REQUEST = 0,
 323         WLAN_ACTION_CATEGORY_MEASURE_REPORT = 1,
 324         WLAN_ACTION_CATEGORY_TPC_REQUEST = 2,
 325         WLAN_ACTION_CATEGORY_TPC_REPORT = 3,
 326         WLAN_ACTION_CATEGORY_CHANNEL_SWITCH = 4,
 327         /* 5 - 255 Reserved */
 328 };
 329
 330 #define IEEE80211_STATMASK_SIGNAL (1<<0)
 331 #define IEEE80211_STATMASK_RSSI (1<<1)
 332 #define IEEE80211_STATMASK_NOISE (1<<2)
 333 #define IEEE80211_STATMASK_RATE (1<<3)
 334 #define IEEE80211_STATMASK_WEMASK 0x7
 335
 336 #define IEEE80211_CCK_MODULATION    (1<<0)
 337 #define IEEE80211_OFDM_MODULATION   (1<<1)
 338
 339 #define IEEE80211_24GHZ_BAND     (1<<0)
 340 #define IEEE80211_52GHZ_BAND     (1<<1)
 341
 342 #define IEEE80211_CCK_RATE_1MB                  0x02
 343 #define IEEE80211_CCK_RATE_2MB                  0x04
 344 #define IEEE80211_CCK_RATE_5MB                  0x0B
 345 #define IEEE80211_CCK_RATE_11MB                 0x16
 346 #define IEEE80211_OFDM_RATE_6MB                 0x0C
 347 #define IEEE80211_OFDM_RATE_9MB                 0x12
 348 #define IEEE80211_OFDM_RATE_12MB                0x18
 349 #define IEEE80211_OFDM_RATE_18MB                0x24
 350 #define IEEE80211_OFDM_RATE_24MB                0x30
 351 #define IEEE80211_OFDM_RATE_36MB                0x48
 352 #define IEEE80211_OFDM_RATE_48MB                0x60
 353 #define IEEE80211_OFDM_RATE_54MB                0x6C
 354 #define IEEE80211_BASIC_RATE_MASK               0x80
 355
 356 #define IEEE80211_CCK_RATE_1MB_MASK             (1<<0)
 357 #define IEEE80211_CCK_RATE_2MB_MASK             (1<<1)
 358 #define IEEE80211_CCK_RATE_5MB_MASK             (1<<2)
 359 #define IEEE80211_CCK_RATE_11MB_MASK            (1<<3)
 360 #define IEEE80211_OFDM_RATE_6MB_MASK            (1<<4)
 361 #define IEEE80211_OFDM_RATE_9MB_MASK            (1<<5)
 362 #define IEEE80211_OFDM_RATE_12MB_MASK           (1<<6)
 363 #define IEEE80211_OFDM_RATE_18MB_MASK           (1<<7)
 364 #define IEEE80211_OFDM_RATE_24MB_MASK           (1<<8)
 365 #define IEEE80211_OFDM_RATE_36MB_MASK           (1<<9)
 366 #define IEEE80211_OFDM_RATE_48MB_MASK           (1<<10)
 367 #define IEEE80211_OFDM_RATE_54MB_MASK           (1<<11)
 368
 369 #define IEEE80211_CCK_RATES_MASK                0x0000000F
 370 #define IEEE80211_CCK_BASIC_RATES_MASK  (IEEE80211_CCK_RATE_1MB_MASK | \
 371         IEEE80211_CCK_RATE_2MB_MASK)
 372 #define IEEE80211_CCK_DEFAULT_RATES_MASK        (IEEE80211_CCK_BASIC_RATES_MASK | \
 373         IEEE80211_CCK_RATE_5MB_MASK | \
 374         IEEE80211_CCK_RATE_11MB_MASK)
 375
 376 #define IEEE80211_OFDM_RATES_MASK               0x00000FF0
 377 #define IEEE80211_OFDM_BASIC_RATES_MASK (IEEE80211_OFDM_RATE_6MB_MASK | \
 378         IEEE80211_OFDM_RATE_12MB_MASK | \
 379         IEEE80211_OFDM_RATE_24MB_MASK)
 380 #define IEEE80211_OFDM_DEFAULT_RATES_MASK       (IEEE80211_OFDM_BASIC_RATES_MASK | \
 381         IEEE80211_OFDM_RATE_9MB_MASK  | \
 382         IEEE80211_OFDM_RATE_18MB_MASK | \
 383         IEEE80211_OFDM_RATE_36MB_MASK | \
 384         IEEE80211_OFDM_RATE_48MB_MASK | \
 385         IEEE80211_OFDM_RATE_54MB_MASK)
 386 #define IEEE80211_DEFAULT_RATES_MASK (IEEE80211_OFDM_DEFAULT_RATES_MASK | \
 387                                 IEEE80211_CCK_DEFAULT_RATES_MASK)
 388
 389 #define IEEE80211_NUM_OFDM_RATES            8
 390 #define IEEE80211_NUM_CCK_RATES             4
 391 #define IEEE80211_OFDM_SHIFT_MASK_A         4
 392
 393 /* NOTE: This data is for statistical purposes; not all hardware provides this
 394  *       information for frames received.
 395  *       For ieee80211_rx_mgt, you need to set at least the 'len' parameter.
 396  */
 397 struct ieee80211_rx_stats {
 398         u32 mac_time;
 399         s8 rssi;
 400         u8 signal;
 401         u8 noise;
 402         u16 rate;               /* in 100 kbps */
 403         u8 received_channel;
 404         u8 control;
 405         u8 mask;
 406         u8 freq;
 407         u16 len;
 408         u64 tsf;
 409         u32 beacon_time;
 410 };
 411
 412 /* IEEE 802.11 requires that STA supports concurrent reception of at least
 413  * three fragmented frames. This define can be increased to support more
 414  * concurrent frames, but it should be noted that each entry can consume about
 415  * 2 kB of RAM and increasing cache size will slow down frame reassembly. */
 416 #define IEEE80211_FRAG_CACHE_LEN 4
 417
 418 struct ieee80211_frag_entry {
 419         unsigned long first_frag_time;
 420         unsigned int seq;
 421         unsigned int last_frag;
 422         struct sk_buff *skb;
 423         u8 src_addr[ETH_ALEN];
 424         u8 dst_addr[ETH_ALEN];
 425 };
 426
 427 struct ieee80211_stats {
 428         unsigned int tx_unicast_frames;
 429         unsigned int tx_multicast_frames;
 430         unsigned int tx_fragments;
 431         unsigned int tx_unicast_octets;
 432         unsigned int tx_multicast_octets;
 433         unsigned int tx_deferred_transmissions;
 434         unsigned int tx_single_retry_frames;
 435         unsigned int tx_multiple_retry_frames;
 436         unsigned int tx_retry_limit_exceeded;
 437         unsigned int tx_discards;
 438         unsigned int rx_unicast_frames;
 439         unsigned int rx_multicast_frames;
 440         unsigned int rx_fragments;
 441         unsigned int rx_unicast_octets;
 442         unsigned int rx_multicast_octets;
 443         unsigned int rx_fcs_errors;
 444         unsigned int rx_discards_no_buffer;
 445         unsigned int tx_discards_wrong_sa;
 446         unsigned int rx_discards_undecryptable;
 447         unsigned int rx_message_in_msg_fragments;
 448         unsigned int rx_message_in_bad_msg_fragments;
 449 };
 450
 451 struct ieee80211_device;
 452
 453 #include "ieee80211_crypt.h"
 454
 455 #define SEC_KEY_1               (1<<0)
 456 #define SEC_KEY_2               (1<<1)
 457 #define SEC_KEY_3               (1<<2)
 458 #define SEC_KEY_4               (1<<3)
 459 #define SEC_ACTIVE_KEY          (1<<4)
 460 #define SEC_AUTH_MODE           (1<<5)
 461 #define SEC_UNICAST_GROUP       (1<<6)
 462 #define SEC_LEVEL               (1<<7)
 463 #define SEC_ENABLED             (1<<8)
 464 #define SEC_ENCRYPT             (1<<9)
 465
 466 #define SEC_LEVEL_0             0       /* None */
 467 #define SEC_LEVEL_1             1       /* WEP 40 and 104 bit */
 468 #define SEC_LEVEL_2             2       /* Level 1 + TKIP */
 469 #define SEC_LEVEL_2_CKIP        3       /* Level 1 + CKIP */
 470 #define SEC_LEVEL_3             4       /* Level 2 + CCMP */
 471
 472 #define SEC_ALG_NONE            0
 473 #define SEC_ALG_WEP             1
 474 #define SEC_ALG_TKIP            2
 475 #define SEC_ALG_CCMP            3
 476
 477 #define WEP_KEYS                4
 478 #define WEP_KEY_LEN             13
 479 #define SCM_KEY_LEN             32
 480 #define SCM_TEMPORAL_KEY_LENGTH 16
 481
 482 struct ieee80211_security {
 483         u16 active_key:2,
 484             enabled:1,
 485             auth_mode:2, auth_algo:4, unicast_uses_group:1, encrypt:1;
 486         u8 encode_alg[WEP_KEYS];
 487         u8 key_sizes[WEP_KEYS];
 488         u8 keys[WEP_KEYS][SCM_KEY_LEN];
 489         u8 level;
 490         u16 flags;
 491 } __attribute__ ((packed));
 492
 493 /*
 494
 495  802.11 data frame from AP
 496
 497       ,-------------------------------------------------------------------.
 498 Bytes |  2   |  2   |    6    |    6    |    6    |  2   | 0..2312 |   4  |
 499       |------|------|---------|---------|---------|------|---------|------|
 500 Desc. | ctrl | dura |  DA/RA  |   TA    |    SA   | Sequ |  frame  |  fcs |
 501       |      | tion | (BSSID) |         |         | ence |  data   |      |
 502       `-------------------------------------------------------------------'
 503
 504 Total: 28-2340 bytes
 505
 506 */
 507
 508 #define BEACON_PROBE_SSID_ID_POSITION 12
 509
 510 /* Management Frame Information Element Types */
 511 enum ieee80211_mfie {
 512         MFIE_TYPE_SSID = 0,
 513         MFIE_TYPE_RATES = 1,
 514         MFIE_TYPE_FH_SET = 2,
 515         MFIE_TYPE_DS_SET = 3,
 516         MFIE_TYPE_CF_SET = 4,
 517         MFIE_TYPE_TIM = 5,
 518         MFIE_TYPE_IBSS_SET = 6,
 519         MFIE_TYPE_COUNTRY = 7,
 520         MFIE_TYPE_HOP_PARAMS = 8,
 521         MFIE_TYPE_HOP_TABLE = 9,
 522         MFIE_TYPE_REQUEST = 10,
 523         MFIE_TYPE_CHALLENGE = 16,
 524         MFIE_TYPE_POWER_CONSTRAINT = 32,
 525         MFIE_TYPE_POWER_CAPABILITY = 33,
 526         MFIE_TYPE_TPC_REQUEST = 34,
 527         MFIE_TYPE_TPC_REPORT = 35,
 528         MFIE_TYPE_SUPP_CHANNELS = 36,
 529         MFIE_TYPE_CSA = 37,
 530         MFIE_TYPE_MEASURE_REQUEST = 38,
 531         MFIE_TYPE_MEASURE_REPORT = 39,
 532         MFIE_TYPE_QUIET = 40,
 533         MFIE_TYPE_IBSS_DFS = 41,
 534         MFIE_TYPE_ERP_INFO = 42,
 535         MFIE_TYPE_RSN = 48,
 536         MFIE_TYPE_RATES_EX = 50,
 537         MFIE_TYPE_GENERIC = 221,
 538         MFIE_TYPE_QOS_PARAMETER = 222,
 539 };
 540
 541 /* Minimal header; can be used for passing 802.11 frames with sufficient
 542  * information to determine what type of underlying data type is actually
 543  * stored in the data. */
 544 struct ieee80211_hdr {
 545         __le16 frame_ctl;
 546         __le16 duration_id;
 547         u8 payload[0];
 548 } __attribute__ ((packed));
 549
 550 struct ieee80211_hdr_1addr {
 551         __le16 frame_ctl;
 552         __le16 duration_id;
 553         u8 addr1[ETH_ALEN];
 554         u8 payload[0];
 555 } __attribute__ ((packed));
 556
 557 struct ieee80211_hdr_2addr {
 558         __le16 frame_ctl;
 559         __le16 duration_id;
 560         u8 addr1[ETH_ALEN];
 561         u8 addr2[ETH_ALEN];
 562         u8 payload[0];
 563 } __attribute__ ((packed));
 564
 565 struct ieee80211_hdr_3addr {
 566         __le16 frame_ctl;
 567         __le16 duration_id;
 568         u8 addr1[ETH_ALEN];
 569         u8 addr2[ETH_ALEN];
 570         u8 addr3[ETH_ALEN];
 571         __le16 seq_ctl;
 572         u8 payload[0];
 573 } __attribute__ ((packed));
 574
 575 struct ieee80211_hdr_4addr {
 576         __le16 frame_ctl;
 577         __le16 duration_id;
 578         u8 addr1[ETH_ALEN];
 579         u8 addr2[ETH_ALEN];
 580         u8 addr3[ETH_ALEN];
 581         __le16 seq_ctl;
 582         u8 addr4[ETH_ALEN];
 583         u8 payload[0];
 584 } __attribute__ ((packed));
 585
 586 struct ieee80211_hdr_3addrqos {
 587         __le16 frame_ctl;
 588         __le16 duration_id;
 589         u8 addr1[ETH_ALEN];
 590         u8 addr2[ETH_ALEN];
 591         u8 addr3[ETH_ALEN];
 592         __le16 seq_ctl;
 593         u8 payload[0];
 594         __le16 qos_ctl;
 595 } __attribute__ ((packed));
 596
 597 struct ieee80211_hdr_4addrqos {
 598         __le16 frame_ctl;
 599         __le16 duration_id;
 600         u8 addr1[ETH_ALEN];
 601         u8 addr2[ETH_ALEN];
 602         u8 addr3[ETH_ALEN];
 603         __le16 seq_ctl;
 604         u8 addr4[ETH_ALEN];
 605         u8 payload[0];
 606         __le16 qos_ctl;
 607 } __attribute__ ((packed));
 608
 609 struct ieee80211_info_element {
 610         u8 id;
 611         u8 len;
 612         u8 data[0];
 613 } __attribute__ ((packed));
 614
 615 /*
 616  * These are the data types that can make up management packets
 617  *
 618         u16 auth_algorithm;
 619         u16 auth_sequence;
 620         u16 beacon_interval;
 621         u16 capability;
 622         u8 current_ap[ETH_ALEN];
 623         u16 listen_interval;
 624         struct {
 625                 u16 association_id:14, reserved:2;
 626         } __attribute__ ((packed));
 627         u32 time_stamp[2];
 628         u16 reason;
 629         u16 status;
 630 */
 631
 632 struct ieee80211_auth {
 633         struct ieee80211_hdr_3addr header;
 634         __le16 algorithm;
 635         __le16 transaction;
 636         __le16 status;
 637         /* challenge */
 638         struct ieee80211_info_element info_element[0];
 639 } __attribute__ ((packed));
 640
 641 struct ieee80211_channel_switch {
 642         u8 id;
 643         u8 len;
 644         u8 mode;
 645         u8 channel;
 646         u8 count;
 647 } __attribute__ ((packed));
 648
 649 struct ieee80211_action {
 650         struct ieee80211_hdr_3addr header;
 651         u8 category;
 652         u8 action;
 653         union {
 654                 struct ieee80211_action_exchange {
 655                         u8 token;
 656                         struct ieee80211_info_element info_element[0];
 657                 } exchange;
 658                 struct ieee80211_channel_switch channel_switch;
 659
 660         } format;
 661 } __attribute__ ((packed));
 662
 663 struct ieee80211_disassoc {
 664         struct ieee80211_hdr_3addr header;
 665         __le16 reason;
 666 } __attribute__ ((packed));
 667
 668 /* Alias deauth for disassoc */
 669 #define ieee80211_deauth ieee80211_disassoc
 670
 671 struct ieee80211_probe_request {
 672         struct ieee80211_hdr_3addr header;
 673         /* SSID, supported rates */
 674         struct ieee80211_info_element info_element[0];
 675 } __attribute__ ((packed));
 676
 677 struct ieee80211_probe_response {
 678         struct ieee80211_hdr_3addr header;
 679         __le32 time_stamp[2];
 680         __le16 beacon_interval;
 681         __le16 capability;
 682         /* SSID, supported rates, FH params, DS params,
 683          * CF params, IBSS params, TIM (if beacon), RSN */
 684         struct ieee80211_info_element info_element[0];
 685 } __attribute__ ((packed));
 686
 687 /* Alias beacon for probe_response */
 688 #define ieee80211_beacon ieee80211_probe_response
 689
 690 struct ieee80211_assoc_request {
 691         struct ieee80211_hdr_3addr header;
 692         __le16 capability;
 693         __le16 listen_interval;
 694         /* SSID, supported rates, RSN */
 695         struct ieee80211_info_element info_element[0];
 696 } __attribute__ ((packed));
 697
 698 struct ieee80211_reassoc_request {
 699         struct ieee80211_hdr_3addr header;
 700         __le16 capability;
 701         __le16 listen_interval;
 702         u8 current_ap[ETH_ALEN];
 703         struct ieee80211_info_element info_element[0];
 704 } __attribute__ ((packed));
 705
 706 struct ieee80211_assoc_response {
 707         struct ieee80211_hdr_3addr header;
 708         __le16 capability;
 709         __le16 status;
 710         __le16 aid;
 711         /* supported rates */
 712         struct ieee80211_info_element info_element[0];
 713 } __attribute__ ((packed));
 714
 715 struct ieee80211_txb {
 716         u8 nr_frags;
 717         u8 encrypted;
 718         u8 rts_included;
 719         u8 reserved;
 720         u16 frag_size;
 721         u16 payload_size;
 722         struct sk_buff *fragments[0];
 723 };
 724
 725 /* SWEEP TABLE ENTRIES NUMBER */
 726 #define MAX_SWEEP_TAB_ENTRIES             42
 727 #define MAX_SWEEP_TAB_ENTRIES_PER_PACKET  7
 728 /* MAX_RATES_LENGTH needs to be 12.  The spec says 8, and many APs
 729  * only use 8, and then use extended rates for the remaining supported
 730  * rates.  Other APs, however, stick all of their supported rates on the
 731  * main rates information element... */
 732 #define MAX_RATES_LENGTH                  ((u8)12)
 733 #define MAX_RATES_EX_LENGTH               ((u8)16)
 734 #define MAX_NETWORK_COUNT                  128
 735
 736 #define CRC_LENGTH                 4U
 737
 738 #define MAX_WPA_IE_LEN 64
 739
 740 #define NETWORK_EMPTY_ESSID    (1<<0)
 741 #define NETWORK_HAS_OFDM       (1<<1)
 742 #define NETWORK_HAS_CCK        (1<<2)
 743
 744 /* QoS structure */
 745 #define NETWORK_HAS_QOS_PARAMETERS      (1<<3)
 746 #define NETWORK_HAS_QOS_INFORMATION     (1<<4)
 747 #define NETWORK_HAS_QOS_MASK            (NETWORK_HAS_QOS_PARAMETERS | \
 748                                          NETWORK_HAS_QOS_INFORMATION)
 749
 750 /* 802.11h */
 751 #define NETWORK_HAS_POWER_CONSTRAINT    (1<<5)
 752 #define NETWORK_HAS_CSA                 (1<<6)
 753 #define NETWORK_HAS_QUIET               (1<<7)
 754 #define NETWORK_HAS_IBSS_DFS            (1<<8)
 755 #define NETWORK_HAS_TPC_REPORT          (1<<9)
 756
 757 #define NETWORK_HAS_ERP_VALUE           (1<<10)
 758
 759 #define QOS_QUEUE_NUM                   4
 760 #define QOS_OUI_LEN                     3
 761 #define QOS_OUI_TYPE                    2
 762 #define QOS_ELEMENT_ID                  221
 763 #define QOS_OUI_INFO_SUB_TYPE           0
 764 #define QOS_OUI_PARAM_SUB_TYPE          1
 765 #define QOS_VERSION_1                   1
 766 #define QOS_AIFSN_MIN_VALUE             2
 767
 768 struct ieee80211_qos_information_element {
 769         u8 elementID;
 770         u8 length;
 771         u8 qui[QOS_OUI_LEN];
 772         u8 qui_type;
 773         u8 qui_subtype;
 774         u8 version;
 775         u8 ac_info;
 776 } __attribute__ ((packed));
 777
 778 struct ieee80211_qos_ac_parameter {
 779         u8 aci_aifsn;
 780         u8 ecw_min_max;
 781         __le16 tx_op_limit;
 782 } __attribute__ ((packed));
 783
 784 struct ieee80211_qos_parameter_info {
 785         struct ieee80211_qos_information_element info_element;
 786         u8 reserved;
 787         struct ieee80211_qos_ac_parameter ac_params_record[QOS_QUEUE_NUM];
 788 } __attribute__ ((packed));
 789
 790 struct ieee80211_qos_parameters {
 791         __le16 cw_min[QOS_QUEUE_NUM];
 792         __le16 cw_max[QOS_QUEUE_NUM];
 793         u8 aifs[QOS_QUEUE_NUM];
 794         u8 flag[QOS_QUEUE_NUM];
 795         __le16 tx_op_limit[QOS_QUEUE_NUM];
 796 } __attribute__ ((packed));
 797
 798 struct ieee80211_qos_data {
 799         struct ieee80211_qos_parameters parameters;
 800         int active;
 801         int supported;
 802         u8 param_count;
 803         u8 old_param_count;
 804 };
 805
 806 struct ieee80211_tim_parameters {
 807         u8 tim_count;
 808         u8 tim_period;
 809 } __attribute__ ((packed));
 810
 811 /*******************************************************/
 812
 813 enum {                          /* ieee80211_basic_report.map */
 814         IEEE80211_BASIC_MAP_BSS = (1 << 0),
 815         IEEE80211_BASIC_MAP_OFDM = (1 << 1),
 816         IEEE80211_BASIC_MAP_UNIDENTIFIED = (1 << 2),
 817         IEEE80211_BASIC_MAP_RADAR = (1 << 3),
 818         IEEE80211_BASIC_MAP_UNMEASURED = (1 << 4),
 819         /* Bits 5-7 are reserved */
 820
 821 };
 822 struct ieee80211_basic_report {
 823         u8 channel;
 824         __le64 start_time;
 825         __le16 duration;
 826         u8 map;
 827 } __attribute__ ((packed));
 828
 829 enum {                          /* ieee80211_measurement_request.mode */
 830         /* Bit 0 is reserved */
 831         IEEE80211_MEASUREMENT_ENABLE = (1 << 1),
 832         IEEE80211_MEASUREMENT_REQUEST = (1 << 2),
 833         IEEE80211_MEASUREMENT_REPORT = (1 << 3),
 834         /* Bits 4-7 are reserved */
 835 };
 836
 837 enum {
 838         IEEE80211_REPORT_BASIC = 0,     /* required */
 839         IEEE80211_REPORT_CCA = 1,       /* optional */
 840         IEEE80211_REPORT_RPI = 2,       /* optional */
 841         /* 3-255 reserved */
 842 };
 843
 844 struct ieee80211_measurement_params {
 845         u8 channel;
 846         __le64 start_time;
 847         __le16 duration;
 848 } __attribute__ ((packed));
 849
 850 struct ieee80211_measurement_request {
 851         struct ieee80211_info_element ie;
 852         u8 token;
 853         u8 mode;
 854         u8 type;
 855         struct ieee80211_measurement_params params[0];
 856 } __attribute__ ((packed));
 857
 858 struct ieee80211_measurement_report {
 859         struct ieee80211_info_element ie;
 860         u8 token;
 861         u8 mode;
 862         u8 type;
 863         union {
 864                 struct ieee80211_basic_report basic[0];
 865         } u;
 866 } __attribute__ ((packed));
 867
 868 struct ieee80211_tpc_report {
 869         u8 transmit_power;
 870         u8 link_margin;
 871 } __attribute__ ((packed));
 872
 873 struct ieee80211_channel_map {
 874         u8 channel;
 875         u8 map;
 876 } __attribute__ ((packed));
 877
 878 struct ieee80211_ibss_dfs {
 879         struct ieee80211_info_element ie;
 880         u8 owner[ETH_ALEN];
 881         u8 recovery_interval;
 882         struct ieee80211_channel_map channel_map[0];
 883 };
 884
 885 struct ieee80211_csa {
 886         u8 mode;
 887         u8 channel;
 888         u8 count;
 889 } __attribute__ ((packed));
 890
 891 struct ieee80211_quiet {
 892         u8 count;
 893         u8 period;
 894         u8 duration;
 895         u8 offset;
 896 } __attribute__ ((packed));
 897
 898 struct ieee80211_network {
 899         /* These entries are used to identify a unique network */
 900         u8 bssid[ETH_ALEN];
 901         u8 channel;
 902         /* Ensure null-terminated for any debug msgs */
 903         u8 ssid[IW_ESSID_MAX_SIZE + 1];
 904         u8 ssid_len;
 905
 906         struct ieee80211_qos_data qos_data;
 907
 908         /* These are network statistics */
 909         struct ieee80211_rx_stats stats;
 910         u16 capability;
 911         u8 rates[MAX_RATES_LENGTH];
 912         u8 rates_len;
 913         u8 rates_ex[MAX_RATES_EX_LENGTH];
 914         u8 rates_ex_len;
 915         unsigned long last_scanned;
 916         u8 mode;
 917         u32 flags;
 918         u32 last_associate;
 919         u32 time_stamp[2];
 920         u16 beacon_interval;
 921         u16 listen_interval;
 922         u16 atim_window;
 923         u8 erp_value;
 924         u8 wpa_ie[MAX_WPA_IE_LEN];
 925         size_t wpa_ie_len;
 926         u8 rsn_ie[MAX_WPA_IE_LEN];
 927         size_t rsn_ie_len;
 928         struct ieee80211_tim_parameters tim;
 929
 930         /* 802.11h info */
 931
 932         /* Power Constraint - mandatory if spctrm mgmt required */
 933         u8 power_constraint;
 934
 935         /* TPC Report - mandatory if spctrm mgmt required */
 936         struct ieee80211_tpc_report tpc_report;
 937
 938         /* IBSS DFS - mandatory if spctrm mgmt required and IBSS
 939          * NOTE: This is variable length and so must be allocated dynamically */
 940         struct ieee80211_ibss_dfs *ibss_dfs;
 941
 942         /* Channel Switch Announcement - optional if spctrm mgmt required */
 943         struct ieee80211_csa csa;
 944
 945         /* Quiet - optional if spctrm mgmt required */
 946         struct ieee80211_quiet quiet;
 947
 948         struct list_head list;
 949 };
 950
 951 enum ieee80211_state {
 952         IEEE80211_UNINITIALIZED = 0,
 953         IEEE80211_INITIALIZED,
 954         IEEE80211_ASSOCIATING,
 955         IEEE80211_ASSOCIATED,
 956         IEEE80211_AUTHENTICATING,
 957         IEEE80211_AUTHENTICATED,
 958         IEEE80211_SHUTDOWN
 959 };
 960
 961 #define DEFAULT_MAX_SCAN_AGE (15 * HZ)
 962 #define DEFAULT_FTS 2346
 963
 964 #define CFG_IEEE80211_RESERVE_FCS (1<<0)
 965 #define CFG_IEEE80211_COMPUTE_FCS (1<<1)
 966 #define CFG_IEEE80211_RTS (1<<2)
 967
 968 #define IEEE80211_24GHZ_MIN_CHANNEL 1
 969 #define IEEE80211_24GHZ_MAX_CHANNEL 14
 970 #define IEEE80211_24GHZ_CHANNELS (IEEE80211_24GHZ_MAX_CHANNEL - \
 971                                   IEEE80211_24GHZ_MIN_CHANNEL + 1)
 972
 973 #define IEEE80211_52GHZ_MIN_CHANNEL 34
 974 #define IEEE80211_52GHZ_MAX_CHANNEL 165
 975 #define IEEE80211_52GHZ_CHANNELS (IEEE80211_52GHZ_MAX_CHANNEL - \
 976                                   IEEE80211_52GHZ_MIN_CHANNEL + 1)
 977
 978 enum {
 979         IEEE80211_CH_PASSIVE_ONLY = (1 << 0),
 980         IEEE80211_CH_80211H_RULES = (1 << 1),
 981         IEEE80211_CH_B_ONLY = (1 << 2),
 982         IEEE80211_CH_NO_IBSS = (1 << 3),
 983         IEEE80211_CH_UNIFORM_SPREADING = (1 << 4),
 984         IEEE80211_CH_RADAR_DETECT = (1 << 5),
 985         IEEE80211_CH_INVALID = (1 << 6),
 986 };
 987
 988 struct ieee80211_channel {
 989         u32 freq;       /* in MHz */
 990         u8 channel;
 991         u8 flags;
 992         u8 max_power;   /* in dBm */
 993 };
 994
 995 struct ieee80211_geo {
 996         u8 name[4];
 997         u8 bg_channels;
 998         u8 a_channels;
 999         struct ieee80211_channel bg[IEEE80211_24GHZ_CHANNELS];
1000         struct ieee80211_channel a[IEEE80211_52GHZ_CHANNELS];
1001 };
1002
1003 struct ieee80211_device {
1004         struct net_device *dev;
1005         struct ieee80211_security sec;
1006
1007         /* Bookkeeping structures */
1008         struct net_device_stats stats;
1009         struct ieee80211_stats ieee_stats;
1010
1011         struct ieee80211_geo geo;
1012
1013         /* Probe / Beacon management */
1014         struct list_head network_free_list;
1015         struct list_head network_list;
1016         struct ieee80211_network *networks;
1017         int scans;
1018         int scan_age;
1019
1020         int iw_mode;            /* operating mode (IW_MODE_*) */
1021         struct iw_spy_data spy_data;    /* iwspy support */
1022
1023         spinlock_t lock;
1024
1025         int tx_headroom;        /* Set to size of any additional room needed at front
1026                                  * of allocated Tx SKBs */
1027         u32 config;
1028
1029         /* WEP and other encryption related settings at the device level */
1030         int open_wep;           /* Set to 1 to allow unencrypted frames */
1031
1032         int reset_on_keychange; /* Set to 1 if the HW needs to be reset on
1033                                  * WEP key changes */
1034
1035         /* If the host performs {en,de}cryption, then set to 1 */
1036         int host_encrypt;
1037         int host_encrypt_msdu;
1038         int host_decrypt;
1039         /* host performs multicast decryption */
1040         int host_mc_decrypt;
1041
1042         /* host should strip IV and ICV from protected frames */
1043         /* meaningful only when hardware decryption is being used */
1044         int host_strip_iv_icv;
1045
1046         int host_open_frag;
1047         int host_build_iv;
1048         int ieee802_1x;         /* is IEEE 802.1X used */
1049
1050         /* WPA data */
1051         int wpa_enabled;
1052         int drop_unencrypted;
1053         int privacy_invoked;
1054         size_t wpa_ie_len;
1055         u8 *wpa_ie;
1056
1057         struct list_head crypt_deinit_list;
1058         struct ieee80211_crypt_data *crypt[WEP_KEYS];
1059         int tx_keyidx;          /* default TX key index (crypt[tx_keyidx]) */
1060         struct timer_list crypt_deinit_timer;
1061         int crypt_quiesced;
1062
1063         int bcrx_sta_key;       /* use individual keys to override default keys even
1064                                  * with RX of broad/multicast frames */
1065
1066         /* Fragmentation structures */
1067         struct ieee80211_frag_entry frag_cache[IEEE80211_FRAG_CACHE_LEN];
1068         unsigned int frag_next_idx;
1069         u16 fts;                /* Fragmentation Threshold */
1070         u16 rts;                /* RTS threshold */
1071
1072         /* Association info */
1073         u8 bssid[ETH_ALEN];
1074
1075         enum ieee80211_state state;
1076
1077         int mode;               /* A, B, G */
1078         int modulation;         /* CCK, OFDM */
1079         int freq_band;          /* 2.4Ghz, 5.2Ghz, Mixed */
1080         int abg_true;           /* ABG flag              */
1081
1082         int perfect_rssi;
1083         int worst_rssi;
1084
1085         u16 prev_seq_ctl;       /* used to drop duplicate frames */
1086
1087         /* Callback functions */
1088         void (*set_security) (struct net_device * dev,
1089                               struct ieee80211_security * sec);
1090         int (*hard_start_xmit) (struct ieee80211_txb * txb,
1091                                 struct net_device * dev, int pri);
1092         int (*reset_port) (struct net_device * dev);
1093         int (*is_queue_full) (struct net_device * dev, int pri);
1094
1095         int (*handle_management) (struct net_device * dev,
1096                                   struct ieee80211_network * network, u16 type);
1097         int (*is_qos_active) (struct net_device *dev, struct sk_buff *skb);
1098
1099         /* Typical STA methods */
1100         int (*handle_auth) (struct net_device * dev,
1101                             struct ieee80211_auth * auth);
1102         int (*handle_deauth) (struct net_device * dev,
1103                               struct ieee80211_deauth * auth);
1104         int (*handle_action) (struct net_device * dev,
1105                               struct ieee80211_action * action,
1106                               struct ieee80211_rx_stats * stats);
1107         int (*handle_disassoc) (struct net_device * dev,
1108                                 struct ieee80211_disassoc * assoc);
1109         int (*handle_beacon) (struct net_device * dev,
1110                               struct ieee80211_beacon * beacon,
1111                               struct ieee80211_network * network);
1112         int (*handle_probe_response) (struct net_device * dev,
1113                                       struct ieee80211_probe_response * resp,
1114                                       struct ieee80211_network * network);
1115         int (*handle_probe_request) (struct net_device * dev,
1116                                      struct ieee80211_probe_request * req,
1117                                      struct ieee80211_rx_stats * stats);
1118         int (*handle_assoc_response) (struct net_device * dev,
1119                                       struct ieee80211_assoc_response * resp,
1120                                       struct ieee80211_network * network);
1121
1122         /* Typical AP methods */
1123         int (*handle_assoc_request) (struct net_device * dev);
1124         int (*handle_reassoc_request) (struct net_device * dev,
1125                                        struct ieee80211_reassoc_request * req);
1126
1127         /* This must be the last item so that it points to the data
1128          * allocated beyond this structure by alloc_ieee80211 */
1129         u8 priv[0];
1130 };
1131
1132 #define IEEE_A            (1<<0)
1133 #define IEEE_B            (1<<1)
1134 #define IEEE_G            (1<<2)
1135 #define IEEE_MODE_MASK    (IEEE_A|IEEE_B|IEEE_G)
1136
1137 static inline void *ieee80211_priv(struct net_device *dev)
1138 {
1139         return ((struct ieee80211_device *)netdev_priv(dev))->priv;
1140 }
1141
1142 static inline int ieee80211_is_empty_essid(const char *essid, int essid_len)
1143 {
1144         /* Single white space is for Linksys APs */
1145         if (essid_len == 1 && essid[0] == ' ')
1146                 return 1;
1147
1148         /* Otherwise, if the entire essid is 0, we assume it is hidden */
1149         while (essid_len) {
1150                 essid_len--;
1151                 if (essid[essid_len] != '\0')
1152                         return 0;
1153         }
1154
1155         return 1;
1156 }
1157
1158 static inline int ieee80211_is_valid_mode(struct ieee80211_device *ieee,
1159                                           int mode)
1160 {
1161         /*
1162          * It is possible for both access points and our device to support
1163          * combinations of modes, so as long as there is one valid combination
1164          * of ap/device supported modes, then return success
1165          *
1166          */
1167         if ((mode & IEEE_A) &&
1168             (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1169             (ieee->freq_band & IEEE80211_52GHZ_BAND))
1170                 return 1;
1171
1172         if ((mode & IEEE_G) &&
1173             (ieee->modulation & IEEE80211_OFDM_MODULATION) &&
1174             (ieee->freq_band & IEEE80211_24GHZ_BAND))
1175                 return 1;
1176
1177         if ((mode & IEEE_B) &&
1178             (ieee->modulation & IEEE80211_CCK_MODULATION) &&
1179             (ieee->freq_band & IEEE80211_24GHZ_BAND))
1180                 return 1;
1181
1182         return 0;
1183 }
1184
1185 static inline int ieee80211_get_hdrlen(u16 fc)
1186 {
1187         int hdrlen = IEEE80211_3ADDR_LEN;
1188         u16 stype = WLAN_FC_GET_STYPE(fc);
1189
1190         switch (WLAN_FC_GET_TYPE(fc)) {
1191         case IEEE80211_FTYPE_DATA:
1192                 if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
1193                         hdrlen = IEEE80211_4ADDR_LEN;
1194                 if (stype & IEEE80211_STYPE_QOS_DATA)
1195                         hdrlen += 2;
1196                 break;
1197         case IEEE80211_FTYPE_CTL:
1198                 switch (WLAN_FC_GET_STYPE(fc)) {
1199                 case IEEE80211_STYPE_CTS:
1200                 case IEEE80211_STYPE_ACK:
1201                         hdrlen = IEEE80211_1ADDR_LEN;
1202                         break;
1203                 default:
1204                         hdrlen = IEEE80211_2ADDR_LEN;
1205                         break;
1206                 }
1207                 break;
1208         }
1209
1210         return hdrlen;
1211 }
1212
1213 static inline u8 *ieee80211_get_payload(struct ieee80211_hdr *hdr)
1214 {
1215         switch (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl))) {
1216         case IEEE80211_1ADDR_LEN:
1217                 return ((struct ieee80211_hdr_1addr *)hdr)->payload;
1218         case IEEE80211_2ADDR_LEN:
1219                 return ((struct ieee80211_hdr_2addr *)hdr)->payload;
1220         case IEEE80211_3ADDR_LEN:
1221                 return ((struct ieee80211_hdr_3addr *)hdr)->payload;
1222         case IEEE80211_4ADDR_LEN:
1223                 return ((struct ieee80211_hdr_4addr *)hdr)->payload;
1224         }
1225         return NULL;
1226 }
1227
1228 static inline int ieee80211_is_ofdm_rate(u8 rate)
1229 {
1230         switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1231         case IEEE80211_OFDM_RATE_6MB:
1232         case IEEE80211_OFDM_RATE_9MB:
1233         case IEEE80211_OFDM_RATE_12MB:
1234         case IEEE80211_OFDM_RATE_18MB:
1235         case IEEE80211_OFDM_RATE_24MB:
1236         case IEEE80211_OFDM_RATE_36MB:
1237         case IEEE80211_OFDM_RATE_48MB:
1238         case IEEE80211_OFDM_RATE_54MB:
1239                 return 1;
1240         }
1241         return 0;
1242 }
1243
1244 static inline int ieee80211_is_cck_rate(u8 rate)
1245 {
1246         switch (rate & ~IEEE80211_BASIC_RATE_MASK) {
1247         case IEEE80211_CCK_RATE_1MB:
1248         case IEEE80211_CCK_RATE_2MB:
1249         case IEEE80211_CCK_RATE_5MB:
1250         case IEEE80211_CCK_RATE_11MB:
1251                 return 1;
1252         }
1253         return 0;
1254 }
1255
1256 /* ieee80211.c */
1257 extern void free_ieee80211(struct net_device *dev);
1258 extern struct net_device *alloc_ieee80211(int sizeof_priv);
1259
1260 extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
1261
1262 /* ieee80211_tx.c */
1263 extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
1264 extern void ieee80211_txb_free(struct ieee80211_txb *);
1265 extern int ieee80211_tx_frame(struct ieee80211_device *ieee,
1266                               struct ieee80211_hdr *frame, int hdr_len,
1267                               int total_len, int encrypt_mpdu);
1268
1269 /* ieee80211_rx.c */
1270 extern void ieee80211_rx_any(struct ieee80211_device *ieee,
1271                      struct sk_buff *skb, struct ieee80211_rx_stats *stats);
1272 extern int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
1273                         struct ieee80211_rx_stats *rx_stats);
1274 /* make sure to set stats->len */
1275 extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
1276                              struct ieee80211_hdr_4addr *header,
1277                              struct ieee80211_rx_stats *stats);
1278 extern void ieee80211_network_reset(struct ieee80211_network *network);
1279
1280 /* ieee80211_geo.c */
1281 extern const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device
1282                                                      *ieee);
1283 extern int ieee80211_set_geo(struct ieee80211_device *ieee,
1284                              const struct ieee80211_geo *geo);
1285
1286 extern int ieee80211_is_valid_channel(struct ieee80211_device *ieee,
1287                                       u8 channel);
1288 extern int ieee80211_channel_to_index(struct ieee80211_device *ieee,
1289                                       u8 channel);
1290 extern u8 ieee80211_freq_to_channel(struct ieee80211_device *ieee, u32 freq);
1291 extern u8 ieee80211_get_channel_flags(struct ieee80211_device *ieee,
1292                                       u8 channel);
1293 extern const struct ieee80211_channel *ieee80211_get_channel(struct
1294                                                              ieee80211_device
1295                                                              *ieee, u8 channel);
1296 extern u32 ieee80211_channel_to_freq(struct ieee80211_device * ieee,
1297                                       u8 channel);
1298
1299 /* ieee80211_wx.c */
1300 extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
1301                                  struct iw_request_info *info,
1302                                  union iwreq_data *wrqu, char *key);
1303 extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
1304                                    struct iw_request_info *info,
1305                                    union iwreq_data *wrqu, char *key);
1306 extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
1307                                    struct iw_request_info *info,
1308                                    union iwreq_data *wrqu, char *key);
1309 extern int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
1310                                       struct iw_request_info *info,
1311                                       union iwreq_data *wrqu, char *extra);
1312 extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
1313                                       struct iw_request_info *info,
1314                                       union iwreq_data *wrqu, char *extra);
1315 extern int ieee80211_wx_set_auth(struct net_device *dev,
1316                                  struct iw_request_info *info,
1317                                  union iwreq_data *wrqu,
1318                                  char *extra);
1319 extern int ieee80211_wx_get_auth(struct net_device *dev,
1320                                  struct iw_request_info *info,
1321                                  union iwreq_data *wrqu,
1322                                  char *extra);
1323
1324 static inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
1325 {
1326         ieee->scans++;
1327 }
1328
1329 static inline int ieee80211_get_scans(struct ieee80211_device *ieee)
1330 {
1331         return ieee->scans;
1332 }
1333
1334 #endif                          /* IEEE80211_H */