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