linux/include/net/ieee80211.h
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   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
 113extern u32 ieee80211_debug_level;
 114#define IEEE80211_DEBUG(level, fmt, args...) \
 115do { if (ieee80211_debug_level & (level)) \
 116  printk(KERN_DEBUG "ieee80211: %c %s " fmt, \
 117         in_interrupt() ? 'I' : 'U', __func__ , ## args); } while (0)
 118static 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)
 124static 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. */
 132const 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
 203struct 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 */
 247enum 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 */
 281enum 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 */
 310enum ieee80211_actioncategories {
 311        WLAN_ACTION_SPECTRUM_MGMT = 0,
 312        /* Reserved 1-127  */
 313        /* Error    128-255 */
 314};
 315
 316/* Action details - 802.11h */
 317enum 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 */
 393struct 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
 414struct 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
 423struct 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
 447struct 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
 478struct 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      ,-------------------------------------------------------------------.
 494Bytes |  2   |  2   |    6    |    6    |    6    |  2   | 0..2312 |   4  |
 495      |------|------|---------|---------|---------|------|---------|------|
 496Desc. | ctrl | dura |  DA/RA  |   TA    |    SA   | Sequ |  frame  |  fcs |
 497      |      | tion | (BSSID) |         |         | ence |  data   |      |
 498      `-------------------------------------------------------------------'
 499
 500Total: 28-2340 bytes
 501
 502*/
 503
 504#define BEACON_PROBE_SSID_ID_POSITION 12
 505
 506/* Management Frame Information Element Types */
 507enum 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. */
 540struct ieee80211_hdr {
 541        __le16 frame_ctl;
 542        __le16 duration_id;
 543        u8 payload[0];
 544} __attribute__ ((packed));
 545
 546struct ieee80211_hdr_1addr {
 547        __le16 frame_ctl;
 548        __le16 duration_id;
 549        u8 addr1[ETH_ALEN];
 550        u8 payload[0];
 551} __attribute__ ((packed));
 552
 553struct 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
 561struct 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
 571struct 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
 582struct 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
 593struct 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
 605struct 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
 628struct 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
 637struct ieee80211_channel_switch {
 638        u8 id;
 639        u8 len;
 640        u8 mode;
 641        u8 channel;
 642        u8 count;
 643} __attribute__ ((packed));
 644
 645struct 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
 659struct 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
 667struct 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
 673struct 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
 686struct 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
 694struct 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
 702struct 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
 711struct 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
 764struct 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
 774struct ieee80211_qos_ac_parameter {
 775        u8 aci_aifsn;
 776        u8 ecw_min_max;
 777        __le16 tx_op_limit;
 778} __attribute__ ((packed));
 779
 780struct 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
 786struct 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
 794struct 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
 802struct ieee80211_tim_parameters {
 803        u8 tim_count;
 804        u8 tim_period;
 805} __attribute__ ((packed));
 806
 807/*******************************************************/
 808
 809enum {                          /* 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};
 818struct ieee80211_basic_report {
 819        u8 channel;
 820        __le64 start_time;
 821        __le16 duration;
 822        u8 map;
 823} __attribute__ ((packed));
 824
 825enum {                          /* 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
 833enum {
 834        IEEE80211_REPORT_BASIC = 0,     /* required */
 835        IEEE80211_REPORT_CCA = 1,       /* optional */
 836        IEEE80211_REPORT_RPI = 2,       /* optional */
 837        /* 3-255 reserved */
 838};
 839
 840struct ieee80211_measurement_params {
 841        u8 channel;
 842        __le64 start_time;
 843        __le16 duration;
 844} __attribute__ ((packed));
 845
 846struct 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
 854struct 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
 864struct ieee80211_tpc_report {
 865        u8 transmit_power;
 866        u8 link_margin;
 867} __attribute__ ((packed));
 868
 869struct ieee80211_channel_map {
 870        u8 channel;
 871        u8 map;
 872} __attribute__ ((packed));
 873
 874struct 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
 881struct ieee80211_csa {
 882        u8 mode;
 883        u8 channel;
 884        u8 count;
 885} __attribute__ ((packed));
 886
 887struct ieee80211_quiet {
 888        u8 count;
 889        u8 period;
 890        u8 duration;
 891        u8 offset;
 892} __attribute__ ((packed));
 893
 894struct 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
 947enum 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
 974enum {
 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
 984struct ieee80211_channel {
 985        u32 freq;       /* in MHz */
 986        u8 channel;
 987        u8 flags;
 988        u8 max_power;   /* in dBm */
 989};
 990
 991struct 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
 999struct 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
1133static inline void *ieee80211_priv(struct net_device *dev)
1134{
1135        return ((struct ieee80211_device *)netdev_priv(dev))->priv;
1136}
1137
1138static 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
1154static 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
1181static 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
1209static 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
1224static 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
1240static 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 */
1253extern void free_ieee80211(struct net_device *dev);
1254extern struct net_device *alloc_ieee80211(int sizeof_priv);
1255
1256extern int ieee80211_set_encryption(struct ieee80211_device *ieee);
1257
1258/* ieee80211_tx.c */
1259extern int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev);
1260extern void ieee80211_txb_free(struct ieee80211_txb *);
1261
1262/* ieee80211_rx.c */
1263extern void ieee80211_rx_any(struct ieee80211_device *ieee,
1264                     struct sk_buff *skb, struct ieee80211_rx_stats *stats);
1265extern 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 */
1268extern void ieee80211_rx_mgt(struct ieee80211_device *ieee,
1269                             struct ieee80211_hdr_4addr *header,
1270                             struct ieee80211_rx_stats *stats);
1271extern void ieee80211_network_reset(struct ieee80211_network *network);
1272
1273/* ieee80211_geo.c */
1274extern const struct ieee80211_geo *ieee80211_get_geo(struct ieee80211_device
1275                                                     *ieee);
1276extern int ieee80211_set_geo(struct ieee80211_device *ieee,
1277                             const struct ieee80211_geo *geo);
1278
1279extern int ieee80211_is_valid_channel(struct ieee80211_device *ieee,
1280                                      u8 channel);
1281extern int ieee80211_channel_to_index(struct ieee80211_device *ieee,
1282                                      u8 channel);
1283extern u8 ieee80211_freq_to_channel(struct ieee80211_device *ieee, u32 freq);
1284extern u8 ieee80211_get_channel_flags(struct ieee80211_device *ieee,
1285                                      u8 channel);
1286extern const struct ieee80211_channel *ieee80211_get_channel(struct
1287                                                             ieee80211_device
1288                                                             *ieee, u8 channel);
1289extern u32 ieee80211_channel_to_freq(struct ieee80211_device * ieee,
1290                                      u8 channel);
1291
1292/* ieee80211_wx.c */
1293extern int ieee80211_wx_get_scan(struct ieee80211_device *ieee,
1294                                 struct iw_request_info *info,
1295                                 union iwreq_data *wrqu, char *key);
1296extern int ieee80211_wx_set_encode(struct ieee80211_device *ieee,
1297                                   struct iw_request_info *info,
1298                                   union iwreq_data *wrqu, char *key);
1299extern int ieee80211_wx_get_encode(struct ieee80211_device *ieee,
1300                                   struct iw_request_info *info,
1301                                   union iwreq_data *wrqu, char *key);
1302extern int ieee80211_wx_set_encodeext(struct ieee80211_device *ieee,
1303                                      struct iw_request_info *info,
1304                                      union iwreq_data *wrqu, char *extra);
1305extern int ieee80211_wx_get_encodeext(struct ieee80211_device *ieee,
1306                                      struct iw_request_info *info,
1307                                      union iwreq_data *wrqu, char *extra);
1308
1309static inline void ieee80211_increment_scans(struct ieee80211_device *ieee)
1310{
1311        ieee->scans++;
1312}
1313
1314static inline int ieee80211_get_scans(struct ieee80211_device *ieee)
1315{
1316        return ieee->scans;
1317}
1318
1319#endif                          /* IEEE80211_H */
1320
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