The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/net80211/ieee80211.h

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    1 /*-
    2  * Copyright (c) 2001 Atsushi Onoe
    3  * Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 3. The name of the author may not be used to endorse or promote products
   15  *    derived from this software without specific prior written permission.
   16  *
   17  * Alternatively, this software may be distributed under the terms of the
   18  * GNU General Public License ("GPL") version 2 as published by the Free
   19  * Software Foundation.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   31  *
   32  * $FreeBSD$
   33  */
   34 #ifndef _NET80211_IEEE80211_H_
   35 #define _NET80211_IEEE80211_H_
   36 
   37 /*
   38  * 802.11 protocol definitions.
   39  */
   40 
   41 #define IEEE80211_ADDR_LEN      6               /* size of 802.11 address */
   42 /* is 802.11 address multicast/broadcast? */
   43 #define IEEE80211_IS_MULTICAST(_a)      (*(_a) & 0x01)
   44 
   45 /* IEEE 802.11 PLCP header */
   46 struct ieee80211_plcp_hdr {
   47         u_int16_t       i_sfd;
   48         u_int8_t        i_signal;
   49         u_int8_t        i_service;
   50         u_int16_t       i_length;
   51         u_int16_t       i_crc;
   52 } __attribute__((__packed__));
   53 
   54 #define IEEE80211_PLCP_SFD      0xF3A0 
   55 #define IEEE80211_PLCP_SERVICE  0x00
   56 
   57 /*
   58  * generic definitions for IEEE 802.11 frames
   59  */
   60 struct ieee80211_frame {
   61         u_int8_t        i_fc[2];
   62         u_int8_t        i_dur[2];
   63         u_int8_t        i_addr1[IEEE80211_ADDR_LEN];
   64         u_int8_t        i_addr2[IEEE80211_ADDR_LEN];
   65         u_int8_t        i_addr3[IEEE80211_ADDR_LEN];
   66         u_int8_t        i_seq[2];
   67         /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
   68         /* see below */
   69 } __attribute__((__packed__));
   70 
   71 struct ieee80211_qosframe {
   72         u_int8_t        i_fc[2];
   73         u_int8_t        i_dur[2];
   74         u_int8_t        i_addr1[IEEE80211_ADDR_LEN];
   75         u_int8_t        i_addr2[IEEE80211_ADDR_LEN];
   76         u_int8_t        i_addr3[IEEE80211_ADDR_LEN];
   77         u_int8_t        i_seq[2];
   78         u_int8_t        i_qos[2];
   79         /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
   80         /* see below */
   81 } __attribute__((__packed__));
   82 
   83 struct ieee80211_qoscntl {
   84         u_int8_t        i_qos[2];
   85 };
   86 
   87 struct ieee80211_frame_addr4 {
   88         u_int8_t        i_fc[2];
   89         u_int8_t        i_dur[2];
   90         u_int8_t        i_addr1[IEEE80211_ADDR_LEN];
   91         u_int8_t        i_addr2[IEEE80211_ADDR_LEN];
   92         u_int8_t        i_addr3[IEEE80211_ADDR_LEN];
   93         u_int8_t        i_seq[2];
   94         u_int8_t        i_addr4[IEEE80211_ADDR_LEN];
   95 } __attribute__((__packed__));
   96 
   97 
   98 struct ieee80211_qosframe_addr4 {
   99         u_int8_t        i_fc[2];
  100         u_int8_t        i_dur[2];
  101         u_int8_t        i_addr1[IEEE80211_ADDR_LEN];
  102         u_int8_t        i_addr2[IEEE80211_ADDR_LEN];
  103         u_int8_t        i_addr3[IEEE80211_ADDR_LEN];
  104         u_int8_t        i_seq[2];
  105         u_int8_t        i_addr4[IEEE80211_ADDR_LEN];
  106         u_int8_t        i_qos[2];
  107 } __attribute__((__packed__));
  108 
  109 /*
  110  * Management Notification Frame
  111  */
  112 struct ieee80211_mnf {
  113         u_int8_t        mnf_category;
  114         u_int8_t        mnf_action;
  115         u_int8_t        mnf_dialog;
  116         u_int8_t        mnf_status;
  117 } __attribute__((__packed__));
  118 #define MNF_SETUP_REQ   0
  119 #define MNF_SETUP_RESP  1
  120 #define MNF_TEARDOWN    2
  121 
  122 /*
  123  * WME/802.11e Tspec Element
  124  */
  125 struct ieee80211_wme_tspec {
  126         u_int8_t        ts_id;
  127         u_int8_t        ts_len;
  128         u_int8_t        ts_oui[3];
  129         u_int8_t        ts_oui_type;
  130         u_int8_t        ts_oui_subtype;
  131         u_int8_t        ts_version;
  132         u_int8_t        ts_tsinfo[3];
  133         u_int8_t        ts_nom_msdu[2];
  134         u_int8_t        ts_max_msdu[2];
  135         u_int8_t        ts_min_svc[4];
  136         u_int8_t        ts_max_svc[4];
  137         u_int8_t        ts_inactv_intv[4];
  138         u_int8_t        ts_susp_intv[4];
  139         u_int8_t        ts_start_svc[4];
  140         u_int8_t        ts_min_rate[4];
  141         u_int8_t        ts_mean_rate[4];
  142         u_int8_t        ts_max_burst[4];
  143         u_int8_t        ts_min_phy[4];
  144         u_int8_t        ts_peak_rate[4];
  145         u_int8_t        ts_delay[4];
  146         u_int8_t        ts_surplus[2];
  147         u_int8_t        ts_medium_time[2];
  148 } __attribute__((__packed__));
  149 
  150 #define IEEE80211_FC0_VERSION_MASK              0x03
  151 #define IEEE80211_FC0_VERSION_SHIFT             0
  152 #define IEEE80211_FC0_VERSION_0                 0x00
  153 #define IEEE80211_FC0_TYPE_MASK                 0x0c
  154 #define IEEE80211_FC0_TYPE_SHIFT                2
  155 #define IEEE80211_FC0_TYPE_MGT                  0x00
  156 #define IEEE80211_FC0_TYPE_CTL                  0x04
  157 #define IEEE80211_FC0_TYPE_DATA                 0x08
  158 
  159 #define IEEE80211_FC0_SUBTYPE_MASK              0xf0
  160 #define IEEE80211_FC0_SUBTYPE_SHIFT             4
  161 /* for TYPE_MGT */
  162 #define IEEE80211_FC0_SUBTYPE_ASSOC_REQ         0x00
  163 #define IEEE80211_FC0_SUBTYPE_ASSOC_RESP        0x10
  164 #define IEEE80211_FC0_SUBTYPE_REASSOC_REQ       0x20
  165 #define IEEE80211_FC0_SUBTYPE_REASSOC_RESP      0x30
  166 #define IEEE80211_FC0_SUBTYPE_PROBE_REQ         0x40
  167 #define IEEE80211_FC0_SUBTYPE_PROBE_RESP        0x50
  168 #define IEEE80211_FC0_SUBTYPE_BEACON            0x80
  169 #define IEEE80211_FC0_SUBTYPE_ATIM              0x90
  170 #define IEEE80211_FC0_SUBTYPE_DISASSOC          0xa0
  171 #define IEEE80211_FC0_SUBTYPE_AUTH              0xb0
  172 #define IEEE80211_FC0_SUBTYPE_DEAUTH            0xc0
  173 /* for TYPE_CTL */
  174 #define IEEE80211_FC0_SUBTYPE_PS_POLL           0xa0
  175 #define IEEE80211_FC0_SUBTYPE_RTS               0xb0
  176 #define IEEE80211_FC0_SUBTYPE_CTS               0xc0
  177 #define IEEE80211_FC0_SUBTYPE_ACK               0xd0
  178 #define IEEE80211_FC0_SUBTYPE_CF_END            0xe0
  179 #define IEEE80211_FC0_SUBTYPE_CF_END_ACK        0xf0
  180 /* for TYPE_DATA (bit combination) */
  181 #define IEEE80211_FC0_SUBTYPE_DATA              0x00
  182 #define IEEE80211_FC0_SUBTYPE_CF_ACK            0x10
  183 #define IEEE80211_FC0_SUBTYPE_CF_POLL           0x20
  184 #define IEEE80211_FC0_SUBTYPE_CF_ACPL           0x30
  185 #define IEEE80211_FC0_SUBTYPE_NODATA            0x40
  186 #define IEEE80211_FC0_SUBTYPE_CFACK             0x50
  187 #define IEEE80211_FC0_SUBTYPE_CFPOLL            0x60
  188 #define IEEE80211_FC0_SUBTYPE_CF_ACK_CF_ACK     0x70
  189 #define IEEE80211_FC0_SUBTYPE_QOS               0x80
  190 
  191 #define IEEE80211_FC1_DIR_MASK                  0x03
  192 #define IEEE80211_FC1_DIR_NODS                  0x00    /* STA->STA */
  193 #define IEEE80211_FC1_DIR_TODS                  0x01    /* STA->AP  */
  194 #define IEEE80211_FC1_DIR_FROMDS                0x02    /* AP ->STA */
  195 #define IEEE80211_FC1_DIR_DSTODS                0x03    /* AP ->AP  */
  196 
  197 #define IEEE80211_FC1_MORE_FRAG                 0x04
  198 #define IEEE80211_FC1_RETRY                     0x08
  199 #define IEEE80211_FC1_PWR_MGT                   0x10
  200 #define IEEE80211_FC1_MORE_DATA                 0x20
  201 #define IEEE80211_FC1_WEP                       0x40
  202 #define IEEE80211_FC1_ORDER                     0x80
  203 
  204 #define IEEE80211_SEQ_FRAG_MASK                 0x000f
  205 #define IEEE80211_SEQ_FRAG_SHIFT                0
  206 #define IEEE80211_SEQ_SEQ_MASK                  0xfff0
  207 #define IEEE80211_SEQ_SEQ_SHIFT                 4
  208 
  209 #define IEEE80211_NWID_LEN                      32
  210 
  211 #define IEEE80211_QOS_TXOP                      0x00ff
  212 /* bit 8 is reserved */
  213 #define IEEE80211_QOS_ACKPOLICY                 0x0600
  214 #define IEEE80211_QOS_ESOP                      0x0800
  215 #define IEEE80211_QOS_TID                       0xf000
  216 
  217 /*
  218  * Control frames.
  219  */
  220 struct ieee80211_frame_min {
  221         u_int8_t        i_fc[2];
  222         u_int8_t        i_dur[2];
  223         u_int8_t        i_addr1[IEEE80211_ADDR_LEN];
  224         u_int8_t        i_addr2[IEEE80211_ADDR_LEN];
  225         /* FCS */
  226 } __attribute__((__packed__));
  227 
  228 struct ieee80211_frame_rts {
  229         u_int8_t        i_fc[2];
  230         u_int8_t        i_dur[2];
  231         u_int8_t        i_ra[IEEE80211_ADDR_LEN];
  232         u_int8_t        i_ta[IEEE80211_ADDR_LEN];
  233         /* FCS */
  234 } __attribute__((__packed__));
  235 
  236 struct ieee80211_frame_cts {
  237         u_int8_t        i_fc[2];
  238         u_int8_t        i_dur[2];
  239         u_int8_t        i_ra[IEEE80211_ADDR_LEN];
  240         /* FCS */
  241 } __attribute__((__packed__));
  242 
  243 struct ieee80211_frame_ack {
  244         u_int8_t        i_fc[2];
  245         u_int8_t        i_dur[2];
  246         u_int8_t        i_ra[IEEE80211_ADDR_LEN];
  247         /* FCS */
  248 } __attribute__((__packed__));
  249 
  250 struct ieee80211_frame_pspoll {
  251         u_int8_t        i_fc[2];
  252         u_int8_t        i_aid[2];
  253         u_int8_t        i_bssid[IEEE80211_ADDR_LEN];
  254         u_int8_t        i_ta[IEEE80211_ADDR_LEN];
  255         /* FCS */
  256 } __attribute__((__packed__));
  257 
  258 struct ieee80211_frame_cfend {          /* NB: also CF-End+CF-Ack */
  259         u_int8_t        i_fc[2];
  260         u_int8_t        i_dur[2];       /* should be zero */
  261         u_int8_t        i_ra[IEEE80211_ADDR_LEN];
  262         u_int8_t        i_bssid[IEEE80211_ADDR_LEN];
  263         /* FCS */
  264 } __attribute__((__packed__));
  265 
  266 /*
  267  * BEACON management packets
  268  *
  269  *      octet timestamp[8]
  270  *      octet beacon interval[2]
  271  *      octet capability information[2]
  272  *      information element
  273  *              octet elemid
  274  *              octet length
  275  *              octet information[length]
  276  */
  277 
  278 typedef uint8_t *ieee80211_mgt_beacon_t;
  279 
  280 #define IEEE80211_BEACON_INTERVAL(beacon) \
  281         ((beacon)[8] | ((beacon)[9] << 8))
  282 #define IEEE80211_BEACON_CAPABILITY(beacon) \
  283         ((beacon)[10] | ((beacon)[11] << 8))
  284 
  285 #define IEEE80211_CAPINFO_ESS                   0x0001
  286 #define IEEE80211_CAPINFO_IBSS                  0x0002
  287 #define IEEE80211_CAPINFO_CF_POLLABLE           0x0004
  288 #define IEEE80211_CAPINFO_CF_POLLREQ            0x0008
  289 #define IEEE80211_CAPINFO_PRIVACY               0x0010
  290 #define IEEE80211_CAPINFO_SHORT_PREAMBLE        0x0020
  291 #define IEEE80211_CAPINFO_PBCC                  0x0040
  292 #define IEEE80211_CAPINFO_CHNL_AGILITY          0x0080
  293 /* bits 8-9 are reserved */
  294 #define IEEE80211_CAPINFO_SHORT_SLOTTIME        0x0400
  295 #define IEEE80211_CAPINFO_RSN                   0x0800
  296 /* bit 12 is reserved */
  297 #define IEEE80211_CAPINFO_DSSSOFDM              0x2000
  298 /* bits 14-15 are reserved */
  299 
  300 /*
  301  * 802.11i/WPA information element (maximally sized).
  302  */
  303 struct ieee80211_ie_wpa {
  304         u_int8_t        wpa_oui[3];     /* 0x00, 0x50, 0xf2 */
  305         u_int8_t        wpa_type;       /* OUI type */
  306         u_int16_t       wpa_version;    /* spec revision */
  307         u_int32_t       wpa_mcipher[1]; /* multicast/group key cipher */
  308         u_int16_t       wpa_uciphercnt; /* # pairwise key ciphers */
  309         u_int32_t       wpa_uciphers[8];/* ciphers */
  310         u_int16_t       wpa_authselcnt; /* authentication selector cnt*/
  311         u_int32_t       wpa_authsels[8];/* selectors */
  312 } __attribute__((__packed__));
  313 
  314 /*
  315  * Management information elements
  316  */
  317 struct ieee80211_information {
  318         char    ssid[IEEE80211_NWID_LEN+1];
  319         struct rates {
  320                 u_int8_t        *p;
  321         } rates;
  322         struct fh {
  323                 u_int16_t       dwell;
  324                 u_int8_t        set;
  325                 u_int8_t        pattern;
  326                 u_int8_t        index;
  327         } fh;
  328         struct ds {
  329                 u_int8_t        channel;
  330         } ds;
  331         struct cf {
  332                 u_int8_t        count;
  333                 u_int8_t        period;
  334                 u_int8_t        maxdur[2];
  335                 u_int8_t        dur[2];
  336         } cf;
  337         struct tim {
  338                 u_int8_t        count;
  339                 u_int8_t        period;
  340                 u_int8_t        bitctl;
  341                 /* u_int8_t     pvt[251]; The driver needs to use this. */
  342         } tim;
  343         struct ibss {
  344                 u_int16_t       atim;
  345         } ibss;
  346         struct challenge {
  347                 u_int8_t        *p;
  348                 u_int8_t        len;
  349         } challenge;
  350         struct erp {
  351                 u_int8_t        flags;
  352         } erp;
  353         struct country {
  354                 u_int8_t        cc[3];          /* ISO CC+(I)ndoor/(O)utdoor */
  355                 struct {
  356                         u_int8_t schan;         /* starting channel */
  357                         u_int8_t nchan;         /* number channels */
  358                         u_int8_t maxtxpwr;      
  359                 } band[4];                      /* up to 4 sub bands */
  360         } country;
  361         struct ath {
  362                 u_int8_t        flags;
  363         } ath;
  364         struct ieee80211_ie_wpa wpa;
  365 };
  366 
  367 enum {
  368         IEEE80211_ELEMID_SSID                   = 0,
  369         IEEE80211_ELEMID_RATES                  = 1,
  370         IEEE80211_ELEMID_FHPARMS                = 2,
  371         IEEE80211_ELEMID_DSPARMS                = 3,
  372         IEEE80211_ELEMID_CFPARMS                = 4,
  373         IEEE80211_ELEMID_TIM                    = 5,
  374         IEEE80211_ELEMID_IBSSPARMS              = 6,
  375         IEEE80211_ELEMID_COUNTRY                = 7,
  376         IEEE80211_ELEMID_CHALLENGE              = 16,
  377         /* 17-31 reserved for challenge text extension */
  378         IEEE80211_ELEMID_ERP                    = 42,
  379         IEEE80211_ELEMID_XRATES                 = 50,
  380         IEEE80211_ELEMID_TPC                    = 150,
  381         IEEE80211_ELEMID_CCKM                   = 156,
  382         IEEE80211_ELEMID_VENDOR                 = 221,  /* vendor private */
  383 };
  384 
  385 #define IEEE80211_CHALLENGE_LEN                 128
  386 
  387 #define IEEE80211_RATE_BASIC                    0x80
  388 #define IEEE80211_RATE_VAL                      0x7f
  389 
  390 /* EPR information element flags */
  391 #define IEEE80211_ERP_NON_ERP_PRESENT           0x01
  392 #define IEEE80211_ERP_USE_PROTECTION            0x02
  393 #define IEEE80211_ERP_BARKER_MODE               0x04
  394 
  395 /* Atheros private advanced capabilities info */
  396 #define ATHEROS_CAP_TURBO_PRIME                 0x01
  397 #define ATHEROS_CAP_COMPRESSION                 0x02
  398 #define ATHEROS_CAP_FAST_FRAME                  0x04
  399 /* bits 3-6 reserved */
  400 #define ATHEROS_CAP_BOOST                       0x80
  401 
  402 #define ATH_OUI                 0x7f0300                /* Atheros OUI */
  403 #define ATH_OUI_TYPE            0x01
  404 #define ATH_OUI_VERSION         0x01
  405 
  406 #define WPA_OUI                 0xf25000
  407 #define WPA_OUI_TYPE            0x01
  408 #define WPA_OUI_VERSION         1               /* current supported version */
  409 
  410 #define WPA_CSE_NULL            0x00
  411 #define WPA_CSE_WEP40           0x01
  412 #define WPA_CSE_TKIP            0x02
  413 #define WPA_CSE_WRAP            0x03            /* WPA2/802.11i */
  414 #define WPA_CSE_CCMP            0x04
  415 #define WPA_CSE_WEP104          0x05
  416 
  417 #define WPA_ASE_NONE            0x00
  418 #define WPA_ASE_8021X_UNSPEC    0x01
  419 #define WPA_ASE_8021X_PSK       0x02
  420 
  421 /*
  422  * AUTH management packets
  423  *
  424  *      octet algo[2]
  425  *      octet seq[2]
  426  *      octet status[2]
  427  *      octet chal.id
  428  *      octet chal.length
  429  *      octet chal.text[253]
  430  */
  431 
  432 typedef u_int8_t *ieee80211_mgt_auth_t;
  433 
  434 #define IEEE80211_AUTH_ALGORITHM(auth) \
  435         ((auth)[0] | ((auth)[1] << 8))
  436 #define IEEE80211_AUTH_TRANSACTION(auth) \
  437         ((auth)[2] | ((auth)[3] << 8))
  438 #define IEEE80211_AUTH_STATUS(auth) \
  439         ((auth)[4] | ((auth)[5] << 8))
  440 
  441 #define IEEE80211_AUTH_ALG_OPEN                 0x0000
  442 #define IEEE80211_AUTH_ALG_SHARED               0x0001
  443 #define IEEE80211_AUTH_ALG_LEAP                 0x0080
  444 
  445 enum {
  446         IEEE80211_AUTH_OPEN_REQUEST             = 1,
  447         IEEE80211_AUTH_OPEN_RESPONSE            = 2,
  448 };
  449 
  450 enum {
  451         IEEE80211_AUTH_SHARED_REQUEST           = 1,
  452         IEEE80211_AUTH_SHARED_CHALLENGE         = 2,
  453         IEEE80211_AUTH_SHARED_RESPONSE          = 3,
  454         IEEE80211_AUTH_SHARED_PASS              = 4,
  455 };
  456 
  457 /*
  458  * Reason codes
  459  *
  460  * Unlisted codes are reserved
  461  */
  462 
  463 enum {
  464         IEEE80211_REASON_UNSPECIFIED            = 1,
  465         IEEE80211_REASON_AUTH_EXPIRE            = 2,
  466         IEEE80211_REASON_AUTH_LEAVE             = 3,
  467         IEEE80211_REASON_ASSOC_EXPIRE           = 4,
  468         IEEE80211_REASON_ASSOC_TOOMANY          = 5,
  469         IEEE80211_REASON_NOT_AUTHED             = 6,
  470         IEEE80211_REASON_NOT_ASSOCED            = 7,
  471         IEEE80211_REASON_ASSOC_LEAVE            = 8,
  472         IEEE80211_REASON_ASSOC_NOT_AUTHED       = 9,
  473 
  474         IEEE80211_REASON_RSN_REQUIRED           = 11,
  475         IEEE80211_REASON_RSN_INCONSISTENT       = 12,
  476         IEEE80211_REASON_IE_INVALID             = 13,
  477         IEEE80211_REASON_MIC_FAILURE            = 14,
  478 
  479         IEEE80211_STATUS_SUCCESS                = 0,
  480         IEEE80211_STATUS_UNSPECIFIED            = 1,
  481         IEEE80211_STATUS_CAPINFO                = 10,
  482         IEEE80211_STATUS_NOT_ASSOCED            = 11,
  483         IEEE80211_STATUS_OTHER                  = 12,
  484         IEEE80211_STATUS_ALG                    = 13,
  485         IEEE80211_STATUS_SEQUENCE               = 14,
  486         IEEE80211_STATUS_CHALLENGE              = 15,
  487         IEEE80211_STATUS_TIMEOUT                = 16,
  488         IEEE80211_STATUS_TOOMANY                = 17,
  489         IEEE80211_STATUS_BASIC_RATE             = 18,
  490         IEEE80211_STATUS_SP_REQUIRED            = 19,
  491         IEEE80211_STATUS_PBCC_REQUIRED          = 20,
  492         IEEE80211_STATUS_CA_REQUIRED            = 21,
  493         IEEE80211_STATUS_TOO_MANY_STATIONS      = 22,
  494         IEEE80211_STATUS_RATES                  = 23,
  495         IEEE80211_STATUS_SHORTSLOT_REQUIRED     = 25,
  496         IEEE80211_STATUS_DSSSOFDM_REQUIRED      = 26,
  497 };
  498 
  499 #define IEEE80211_WEP_KEYLEN                    5       /* 40bit */
  500 #define IEEE80211_WEP_IVLEN                     3       /* 24bit */
  501 #define IEEE80211_WEP_KIDLEN                    1       /* 1 octet */
  502 #define IEEE80211_WEP_CRCLEN                    4       /* CRC-32 */
  503 #define IEEE80211_WEP_NKID                      4       /* number of key ids */
  504 
  505 #define IEEE80211_CRC_LEN                       4
  506 
  507 /*
  508  * Maximum acceptable MTU is:
  509  *      IEEE80211_MAX_LEN - WEP overhead - CRC -
  510  *              QoS overhead - RSN/WPA overhead
  511  * Min is arbitrarily chosen > IEEE80211_MIN_LEN.  The default
  512  * mtu is Ethernet-compatible; it's set by ether_ifattach.
  513  */
  514 #define IEEE80211_MTU_MAX                       2290
  515 #define IEEE80211_MTU_MIN                       32
  516 
  517 #define IEEE80211_MAX_LEN                       (2300 + IEEE80211_CRC_LEN + \
  518     (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN))
  519 #define IEEE80211_MIN_LEN \
  520         (sizeof(struct ieee80211_frame_min) + IEEE80211_CRC_LEN)
  521 
  522 /* 
  523  * RTS frame length parameters.  The default is specified in
  524  * the 802.11 spec.  The max may be wrong for jumbo frames.
  525  */
  526 #define IEEE80211_RTS_DEFAULT                   512
  527 #define IEEE80211_RTS_MIN                       1
  528 #define IEEE80211_RTS_MAX                       IEEE80211_MAX_LEN
  529 
  530 enum {
  531         IEEE80211_AUTH_NONE     = 0,
  532         IEEE80211_AUTH_OPEN     = 1,
  533         IEEE80211_AUTH_SHARED   = 2,
  534 };
  535 
  536 #endif /* _NET80211_IEEE80211_H_ */

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