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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) 2002-2007 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  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   25  *
   26  * $FreeBSD: stable/7/sys/net80211/ieee80211.h 205282 2010-03-18 16:55:47Z rpaulo $
   27  */
   28 #ifndef _NET80211_IEEE80211_H_
   29 #define _NET80211_IEEE80211_H_
   30 
   31 /*
   32  * 802.11 protocol definitions.
   33  */
   34 
   35 #define IEEE80211_ADDR_LEN      6               /* size of 802.11 address */
   36 /* is 802.11 address multicast/broadcast? */
   37 #define IEEE80211_IS_MULTICAST(_a)      (*(_a) & 0x01)
   38 
   39 /* IEEE 802.11 PLCP header */
   40 struct ieee80211_plcp_hdr {
   41         uint16_t        i_sfd;
   42         uint8_t         i_signal;
   43         uint8_t         i_service;
   44         uint16_t        i_length;
   45         uint16_t        i_crc;
   46 } __packed;
   47 
   48 #define IEEE80211_PLCP_SFD      0xF3A0 
   49 #define IEEE80211_PLCP_SERVICE  0x00
   50 
   51 /*
   52  * generic definitions for IEEE 802.11 frames
   53  */
   54 struct ieee80211_frame {
   55         uint8_t         i_fc[2];
   56         uint8_t         i_dur[2];
   57         uint8_t         i_addr1[IEEE80211_ADDR_LEN];
   58         uint8_t         i_addr2[IEEE80211_ADDR_LEN];
   59         uint8_t         i_addr3[IEEE80211_ADDR_LEN];
   60         uint8_t         i_seq[2];
   61         /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
   62         /* see below */
   63 } __packed;
   64 
   65 struct ieee80211_qosframe {
   66         uint8_t         i_fc[2];
   67         uint8_t         i_dur[2];
   68         uint8_t         i_addr1[IEEE80211_ADDR_LEN];
   69         uint8_t         i_addr2[IEEE80211_ADDR_LEN];
   70         uint8_t         i_addr3[IEEE80211_ADDR_LEN];
   71         uint8_t         i_seq[2];
   72         uint8_t         i_qos[2];
   73         /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
   74         /* see below */
   75 } __packed;
   76 
   77 struct ieee80211_qoscntl {
   78         uint8_t         i_qos[2];
   79 };
   80 
   81 struct ieee80211_frame_addr4 {
   82         uint8_t         i_fc[2];
   83         uint8_t         i_dur[2];
   84         uint8_t         i_addr1[IEEE80211_ADDR_LEN];
   85         uint8_t         i_addr2[IEEE80211_ADDR_LEN];
   86         uint8_t         i_addr3[IEEE80211_ADDR_LEN];
   87         uint8_t         i_seq[2];
   88         uint8_t         i_addr4[IEEE80211_ADDR_LEN];
   89 } __packed;
   90 
   91 
   92 struct ieee80211_qosframe_addr4 {
   93         uint8_t         i_fc[2];
   94         uint8_t         i_dur[2];
   95         uint8_t         i_addr1[IEEE80211_ADDR_LEN];
   96         uint8_t         i_addr2[IEEE80211_ADDR_LEN];
   97         uint8_t         i_addr3[IEEE80211_ADDR_LEN];
   98         uint8_t         i_seq[2];
   99         uint8_t         i_addr4[IEEE80211_ADDR_LEN];
  100         uint8_t         i_qos[2];
  101 } __packed;
  102 
  103 #define IEEE80211_FC0_VERSION_MASK              0x03
  104 #define IEEE80211_FC0_VERSION_SHIFT             0
  105 #define IEEE80211_FC0_VERSION_0                 0x00
  106 #define IEEE80211_FC0_TYPE_MASK                 0x0c
  107 #define IEEE80211_FC0_TYPE_SHIFT                2
  108 #define IEEE80211_FC0_TYPE_MGT                  0x00
  109 #define IEEE80211_FC0_TYPE_CTL                  0x04
  110 #define IEEE80211_FC0_TYPE_DATA                 0x08
  111 
  112 #define IEEE80211_FC0_SUBTYPE_MASK              0xf0
  113 #define IEEE80211_FC0_SUBTYPE_SHIFT             4
  114 /* for TYPE_MGT */
  115 #define IEEE80211_FC0_SUBTYPE_ASSOC_REQ         0x00
  116 #define IEEE80211_FC0_SUBTYPE_ASSOC_RESP        0x10
  117 #define IEEE80211_FC0_SUBTYPE_REASSOC_REQ       0x20
  118 #define IEEE80211_FC0_SUBTYPE_REASSOC_RESP      0x30
  119 #define IEEE80211_FC0_SUBTYPE_PROBE_REQ         0x40
  120 #define IEEE80211_FC0_SUBTYPE_PROBE_RESP        0x50
  121 #define IEEE80211_FC0_SUBTYPE_BEACON            0x80
  122 #define IEEE80211_FC0_SUBTYPE_ATIM              0x90
  123 #define IEEE80211_FC0_SUBTYPE_DISASSOC          0xa0
  124 #define IEEE80211_FC0_SUBTYPE_AUTH              0xb0
  125 #define IEEE80211_FC0_SUBTYPE_DEAUTH            0xc0
  126 #define IEEE80211_FC0_SUBTYPE_ACTION            0xd0
  127 /* for TYPE_CTL */
  128 #define IEEE80211_FC0_SUBTYPE_BAR               0x80
  129 #define IEEE80211_FC0_SUBTYPE_PS_POLL           0xa0
  130 #define IEEE80211_FC0_SUBTYPE_RTS               0xb0
  131 #define IEEE80211_FC0_SUBTYPE_CTS               0xc0
  132 #define IEEE80211_FC0_SUBTYPE_ACK               0xd0
  133 #define IEEE80211_FC0_SUBTYPE_CF_END            0xe0
  134 #define IEEE80211_FC0_SUBTYPE_CF_END_ACK        0xf0
  135 /* for TYPE_DATA (bit combination) */
  136 #define IEEE80211_FC0_SUBTYPE_DATA              0x00
  137 #define IEEE80211_FC0_SUBTYPE_CF_ACK            0x10
  138 #define IEEE80211_FC0_SUBTYPE_CF_POLL           0x20
  139 #define IEEE80211_FC0_SUBTYPE_CF_ACPL           0x30
  140 #define IEEE80211_FC0_SUBTYPE_NODATA            0x40
  141 #define IEEE80211_FC0_SUBTYPE_CFACK             0x50
  142 #define IEEE80211_FC0_SUBTYPE_CFPOLL            0x60
  143 #define IEEE80211_FC0_SUBTYPE_CF_ACK_CF_ACK     0x70
  144 #define IEEE80211_FC0_SUBTYPE_QOS               0x80
  145 #define IEEE80211_FC0_SUBTYPE_QOS_NULL          0xc0
  146 
  147 #define IEEE80211_FC1_DIR_MASK                  0x03
  148 #define IEEE80211_FC1_DIR_NODS                  0x00    /* STA->STA */
  149 #define IEEE80211_FC1_DIR_TODS                  0x01    /* STA->AP  */
  150 #define IEEE80211_FC1_DIR_FROMDS                0x02    /* AP ->STA */
  151 #define IEEE80211_FC1_DIR_DSTODS                0x03    /* AP ->AP  */
  152 
  153 #define IEEE80211_FC1_MORE_FRAG                 0x04
  154 #define IEEE80211_FC1_RETRY                     0x08
  155 #define IEEE80211_FC1_PWR_MGT                   0x10
  156 #define IEEE80211_FC1_MORE_DATA                 0x20
  157 #define IEEE80211_FC1_WEP                       0x40
  158 #define IEEE80211_FC1_ORDER                     0x80
  159 
  160 #define IEEE80211_SEQ_FRAG_MASK                 0x000f
  161 #define IEEE80211_SEQ_FRAG_SHIFT                0
  162 #define IEEE80211_SEQ_SEQ_MASK                  0xfff0
  163 #define IEEE80211_SEQ_SEQ_SHIFT                 4
  164 #define IEEE80211_SEQ_RANGE                     4096
  165 
  166 #define IEEE80211_SEQ_ADD(seq, incr) \
  167         (((seq) + (incr)) & (IEEE80211_SEQ_RANGE-1))
  168 #define IEEE80211_SEQ_INC(seq)  IEEE80211_SEQ_ADD(seq,1)
  169 #define IEEE80211_SEQ_SUB(a, b) \
  170         (((a) + IEEE80211_SEQ_RANGE - (b)) & (IEEE80211_SEQ_RANGE-1))
  171 
  172 #define IEEE80211_SEQ_BA_RANGE                  2048    /* 2^11 */
  173 #define IEEE80211_SEQ_BA_BEFORE(a, b) \
  174         (IEEE80211_SEQ_SUB(b, a+1) < IEEE80211_SEQ_BA_RANGE-1)
  175 
  176 #define IEEE80211_NWID_LEN                      32
  177 
  178 #define IEEE80211_QOS_TXOP                      0x00ff
  179 /* bit 8 is reserved */
  180 #define IEEE80211_QOS_AMSDU                     0x80
  181 #define IEEE80211_QOS_AMSDU_S                   7
  182 #define IEEE80211_QOS_ACKPOLICY                 0x60
  183 #define IEEE80211_QOS_ACKPOLICY_S               5
  184 #define IEEE80211_QOS_ACKPOLICY_NOACK           0x20    /* No ACK required */
  185 #define IEEE80211_QOS_ACKPOLICY_BA              0x60    /* Block ACK */
  186 #define IEEE80211_QOS_ESOP                      0x10
  187 #define IEEE80211_QOS_ESOP_S                    4
  188 #define IEEE80211_QOS_TID                       0x0f
  189 
  190 /* does frame have QoS sequence control data */
  191 #define IEEE80211_QOS_HAS_SEQ(wh) \
  192         (((wh)->i_fc[0] & \
  193           (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_QOS)) == \
  194           (IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_QOS))
  195 
  196 /*
  197  * WME/802.11e information element.
  198  */
  199 struct ieee80211_wme_info {
  200         uint8_t         wme_id;         /* IEEE80211_ELEMID_VENDOR */
  201         uint8_t         wme_len;        /* length in bytes */
  202         uint8_t         wme_oui[3];     /* 0x00, 0x50, 0xf2 */
  203         uint8_t         wme_type;       /* OUI type */
  204         uint8_t         wme_subtype;    /* OUI subtype */
  205         uint8_t         wme_version;    /* spec revision */
  206         uint8_t         wme_info;       /* QoS info */
  207 } __packed;
  208 
  209 /*
  210  * WME/802.11e Tspec Element
  211  */
  212 struct ieee80211_wme_tspec {
  213         uint8_t         ts_id;
  214         uint8_t         ts_len;
  215         uint8_t         ts_oui[3];
  216         uint8_t         ts_oui_type;
  217         uint8_t         ts_oui_subtype;
  218         uint8_t         ts_version;
  219         uint8_t         ts_tsinfo[3];
  220         uint8_t         ts_nom_msdu[2];
  221         uint8_t         ts_max_msdu[2];
  222         uint8_t         ts_min_svc[4];
  223         uint8_t         ts_max_svc[4];
  224         uint8_t         ts_inactv_intv[4];
  225         uint8_t         ts_susp_intv[4];
  226         uint8_t         ts_start_svc[4];
  227         uint8_t         ts_min_rate[4];
  228         uint8_t         ts_mean_rate[4];
  229         uint8_t         ts_max_burst[4];
  230         uint8_t         ts_min_phy[4];
  231         uint8_t         ts_peak_rate[4];
  232         uint8_t         ts_delay[4];
  233         uint8_t         ts_surplus[2];
  234         uint8_t         ts_medium_time[2];
  235 } __packed;
  236 
  237 /*
  238  * WME AC parameter field
  239  */
  240 struct ieee80211_wme_acparams {
  241         uint8_t         acp_aci_aifsn;
  242         uint8_t         acp_logcwminmax;
  243         uint16_t        acp_txop;
  244 } __packed;
  245 
  246 #define WME_NUM_AC              4       /* 4 AC categories */
  247 #define WME_NUM_TID             16      /* 16 tids */
  248 
  249 #define WME_PARAM_ACI           0x60    /* Mask for ACI field */
  250 #define WME_PARAM_ACI_S         5       /* Shift for ACI field */
  251 #define WME_PARAM_ACM           0x10    /* Mask for ACM bit */
  252 #define WME_PARAM_ACM_S         4       /* Shift for ACM bit */
  253 #define WME_PARAM_AIFSN         0x0f    /* Mask for aifsn field */
  254 #define WME_PARAM_AIFSN_S       0       /* Shift for aifsn field */
  255 #define WME_PARAM_LOGCWMIN      0x0f    /* Mask for CwMin field (in log) */
  256 #define WME_PARAM_LOGCWMIN_S    0       /* Shift for CwMin field */
  257 #define WME_PARAM_LOGCWMAX      0xf0    /* Mask for CwMax field (in log) */
  258 #define WME_PARAM_LOGCWMAX_S    4       /* Shift for CwMax field */
  259 
  260 #define WME_AC_TO_TID(_ac) (       \
  261         ((_ac) == WME_AC_VO) ? 6 : \
  262         ((_ac) == WME_AC_VI) ? 5 : \
  263         ((_ac) == WME_AC_BK) ? 1 : \
  264         0)
  265 
  266 #define TID_TO_WME_AC(_tid) (      \
  267         ((_tid) == 0 || (_tid) == 3) ? WME_AC_BE : \
  268         ((_tid) < 3) ? WME_AC_BK : \
  269         ((_tid) < 6) ? WME_AC_VI : \
  270         WME_AC_VO)
  271 
  272 /*
  273  * WME Parameter Element
  274  */
  275 struct ieee80211_wme_param {
  276         uint8_t         param_id;
  277         uint8_t         param_len;
  278         uint8_t         param_oui[3];
  279         uint8_t         param_oui_type;
  280         uint8_t         param_oui_subtype;
  281         uint8_t         param_version;
  282         uint8_t         param_qosInfo;
  283 #define WME_QOSINFO_COUNT       0x0f    /* Mask for param count field */
  284         uint8_t         param_reserved;
  285         struct ieee80211_wme_acparams   params_acParams[WME_NUM_AC];
  286 } __packed;
  287 
  288 /*
  289  * Management Notification Frame
  290  */
  291 struct ieee80211_mnf {
  292         uint8_t         mnf_category;
  293         uint8_t         mnf_action;
  294         uint8_t         mnf_dialog;
  295         uint8_t         mnf_status;
  296 } __packed;
  297 #define MNF_SETUP_REQ   0
  298 #define MNF_SETUP_RESP  1
  299 #define MNF_TEARDOWN    2
  300 
  301 /* 
  302  * 802.11n Management Action Frames 
  303  */
  304 /* generic frame format */
  305 struct ieee80211_action {
  306         uint8_t         ia_category;
  307         uint8_t         ia_action;
  308 } __packed;
  309 
  310 #define IEEE80211_ACTION_CAT_QOS        0       /* QoS */
  311 #define IEEE80211_ACTION_CAT_BA         3       /* BA */
  312 #define IEEE80211_ACTION_CAT_HT         7       /* HT */
  313 
  314 #define IEEE80211_ACTION_HT_TXCHWIDTH   0       /* recommended xmit chan width*/
  315 #define IEEE80211_ACTION_HT_MIMOPWRSAVE 1       /* MIMO power save */
  316 
  317 /* HT - recommended transmission channel width */
  318 struct ieee80211_action_ht_txchwidth {
  319         struct ieee80211_action at_header;
  320         uint8_t         at_chwidth;     
  321 } __packed;
  322 
  323 #define IEEE80211_A_HT_TXCHWIDTH_20     0
  324 #define IEEE80211_A_HT_TXCHWIDTH_2040   1
  325 
  326 /* HT - MIMO Power Save (NB: D2.04) */
  327 struct ieee80211_action_ht_mimopowersave {
  328         struct ieee80211_action am_header;
  329         uint8_t         am_control;
  330 } __packed;
  331 
  332 #define IEEE80211_A_HT_MIMOPWRSAVE_ENA          0x01    /* PS enabled */
  333 #define IEEE80211_A_HT_MIMOPWRSAVE_MODE         0x02
  334 #define IEEE80211_A_HT_MIMOPWRSAVE_MODE_S       1
  335 #define IEEE80211_A_HT_MIMOPWRSAVE_DYNAMIC      0x02    /* Dynamic Mode */
  336 #define IEEE80211_A_HT_MIMOPWRSAVE_STATIC       0x00    /* no SM packets */
  337 /* bits 2-7 reserved */
  338 
  339 /* Block Ack actions */
  340 #define IEEE80211_ACTION_BA_ADDBA_REQUEST       0   /* ADDBA request */
  341 #define IEEE80211_ACTION_BA_ADDBA_RESPONSE      1   /* ADDBA response */
  342 #define IEEE80211_ACTION_BA_DELBA               2   /* DELBA */
  343 
  344 /* Block Ack Parameter Set */
  345 #define IEEE80211_BAPS_BUFSIZ   0xffc0          /* buffer size */
  346 #define IEEE80211_BAPS_BUFSIZ_S 6
  347 #define IEEE80211_BAPS_TID      0x003c          /* TID */
  348 #define IEEE80211_BAPS_TID_S    2
  349 #define IEEE80211_BAPS_POLICY   0x0002          /* block ack policy */
  350 #define IEEE80211_BAPS_POLICY_S 1
  351 
  352 #define IEEE80211_BAPS_POLICY_DELAYED   (0<<IEEE80211_BAPS_POLICY_S)
  353 #define IEEE80211_BAPS_POLICY_IMMEDIATE (1<<IEEE80211_BAPS_POLICY_S)
  354 
  355 /* Block Ack Sequence Control */
  356 #define IEEE80211_BASEQ_START   0xfff0          /* starting seqnum */
  357 #define IEEE80211_BASEQ_START_S 4
  358 #define IEEE80211_BASEQ_FRAG    0x000f          /* fragment number */
  359 #define IEEE80211_BASEQ_FRAG_S  0
  360 
  361 /* Delayed Block Ack Parameter Set */
  362 #define IEEE80211_DELBAPS_TID   0xf000          /* TID */
  363 #define IEEE80211_DELBAPS_TID_S 12
  364 #define IEEE80211_DELBAPS_INIT  0x0800          /* initiator */
  365 #define IEEE80211_DELBAPS_INIT_S 11
  366 
  367 /* BA - ADDBA request */
  368 struct ieee80211_action_ba_addbarequest {
  369         struct ieee80211_action rq_header;
  370         uint8_t         rq_dialogtoken;
  371         uint16_t        rq_baparamset;
  372         uint16_t        rq_batimeout;           /* in TUs */
  373         uint16_t        rq_baseqctl;
  374 } __packed;
  375 
  376 /* BA - ADDBA response */
  377 struct ieee80211_action_ba_addbaresponse {
  378         struct ieee80211_action rs_header;
  379         uint8_t         rs_dialogtoken;
  380         uint16_t        rs_statuscode;
  381         uint16_t        rs_baparamset; 
  382         uint16_t        rs_batimeout;           /* in TUs */
  383 } __packed;
  384 
  385 /* BA - DELBA */
  386 struct ieee80211_action_ba_delba {
  387         struct ieee80211_action dl_header;
  388         uint16_t        dl_baparamset;
  389         uint16_t        dl_reasoncode;
  390 } __packed;
  391 
  392 /* BAR Control */
  393 #define IEEE80211_BAR_TID       0xf000          /* TID */
  394 #define IEEE80211_BAR_TID_S     12
  395 #define IEEE80211_BAR_COMP      0x0004          /* compressed */
  396 #define IEEE80211_BAR_MTID      0x0002
  397 #define IEEE80211_BAR_NOACK     0x0001          /* no-ack policy */
  398 
  399 struct ieee80211_ba_request {
  400         uint16_t        rq_barctl;
  401         uint16_t        rq_barseqctl;
  402 } __packed;
  403 
  404 /*
  405  * Control frames.
  406  */
  407 struct ieee80211_frame_min {
  408         uint8_t         i_fc[2];
  409         uint8_t         i_dur[2];
  410         uint8_t         i_addr1[IEEE80211_ADDR_LEN];
  411         uint8_t         i_addr2[IEEE80211_ADDR_LEN];
  412         /* FCS */
  413 } __packed;
  414 
  415 struct ieee80211_frame_rts {
  416         uint8_t         i_fc[2];
  417         uint8_t         i_dur[2];
  418         uint8_t         i_ra[IEEE80211_ADDR_LEN];
  419         uint8_t         i_ta[IEEE80211_ADDR_LEN];
  420         /* FCS */
  421 } __packed;
  422 
  423 struct ieee80211_frame_cts {
  424         uint8_t         i_fc[2];
  425         uint8_t         i_dur[2];
  426         uint8_t         i_ra[IEEE80211_ADDR_LEN];
  427         /* FCS */
  428 } __packed;
  429 
  430 struct ieee80211_frame_ack {
  431         uint8_t         i_fc[2];
  432         uint8_t         i_dur[2];
  433         uint8_t         i_ra[IEEE80211_ADDR_LEN];
  434         /* FCS */
  435 } __packed;
  436 
  437 struct ieee80211_frame_pspoll {
  438         uint8_t         i_fc[2];
  439         uint8_t         i_aid[2];
  440         uint8_t         i_bssid[IEEE80211_ADDR_LEN];
  441         uint8_t         i_ta[IEEE80211_ADDR_LEN];
  442         /* FCS */
  443 } __packed;
  444 
  445 struct ieee80211_frame_cfend {          /* NB: also CF-End+CF-Ack */
  446         uint8_t         i_fc[2];
  447         uint8_t         i_dur[2];       /* should be zero */
  448         uint8_t         i_ra[IEEE80211_ADDR_LEN];
  449         uint8_t         i_bssid[IEEE80211_ADDR_LEN];
  450         /* FCS */
  451 } __packed;
  452 
  453 struct ieee80211_frame_bar {
  454         uint8_t         i_fc[2];
  455         uint8_t         i_dur[2];
  456         uint8_t         i_ra[IEEE80211_ADDR_LEN];
  457         uint8_t         i_ta[IEEE80211_ADDR_LEN];
  458         uint16_t        i_ctl;
  459         uint16_t        i_seq;
  460         /* FCS */
  461 } __packed;
  462 
  463 /*
  464  * BEACON management packets
  465  *
  466  *      octet timestamp[8]
  467  *      octet beacon interval[2]
  468  *      octet capability information[2]
  469  *      information element
  470  *              octet elemid
  471  *              octet length
  472  *              octet information[length]
  473  */
  474 
  475 #define IEEE80211_BEACON_INTERVAL(beacon) \
  476         ((beacon)[8] | ((beacon)[9] << 8))
  477 #define IEEE80211_BEACON_CAPABILITY(beacon) \
  478         ((beacon)[10] | ((beacon)[11] << 8))
  479 
  480 #define IEEE80211_CAPINFO_ESS                   0x0001
  481 #define IEEE80211_CAPINFO_IBSS                  0x0002
  482 #define IEEE80211_CAPINFO_CF_POLLABLE           0x0004
  483 #define IEEE80211_CAPINFO_CF_POLLREQ            0x0008
  484 #define IEEE80211_CAPINFO_PRIVACY               0x0010
  485 #define IEEE80211_CAPINFO_SHORT_PREAMBLE        0x0020
  486 #define IEEE80211_CAPINFO_PBCC                  0x0040
  487 #define IEEE80211_CAPINFO_CHNL_AGILITY          0x0080
  488 #define IEEE80211_CAPINFO_SPECTRUM_MGMT         0x0100
  489 /* bit 9 is reserved */
  490 #define IEEE80211_CAPINFO_SHORT_SLOTTIME        0x0400
  491 #define IEEE80211_CAPINFO_RSN                   0x0800
  492 /* bit 12 is reserved */
  493 #define IEEE80211_CAPINFO_DSSSOFDM              0x2000
  494 /* bits 14-15 are reserved */
  495 
  496 /*
  497  * 802.11i/WPA information element (maximally sized).
  498  */
  499 struct ieee80211_ie_wpa {
  500         uint8_t         wpa_id;         /* IEEE80211_ELEMID_VENDOR */
  501         uint8_t         wpa_len;        /* length in bytes */
  502         uint8_t         wpa_oui[3];     /* 0x00, 0x50, 0xf2 */
  503         uint8_t         wpa_type;       /* OUI type */
  504         uint16_t        wpa_version;    /* spec revision */
  505         uint32_t        wpa_mcipher[1]; /* multicast/group key cipher */
  506         uint16_t        wpa_uciphercnt; /* # pairwise key ciphers */
  507         uint32_t        wpa_uciphers[8];/* ciphers */
  508         uint16_t        wpa_authselcnt; /* authentication selector cnt*/
  509         uint32_t        wpa_authsels[8];/* selectors */
  510         uint16_t        wpa_caps;       /* 802.11i capabilities */
  511         uint16_t        wpa_pmkidcnt;   /* 802.11i pmkid count */
  512         uint16_t        wpa_pmkids[8];  /* 802.11i pmkids */
  513 } __packed;
  514 
  515 /*
  516  * 802.11n HT Capability IE
  517  * NB: these reflect D1.10 
  518  */
  519 struct ieee80211_ie_htcap {
  520         uint8_t         hc_id;                  /* element ID */
  521         uint8_t         hc_len;                 /* length in bytes */
  522         uint16_t        hc_cap;                 /* HT caps (see below) */
  523         uint8_t         hc_param;               /* HT params (see below) */
  524         uint8_t         hc_mcsset[16];          /* supported MCS set */
  525         uint16_t        hc_extcap;              /* extended HT capabilities */
  526         uint32_t        hc_txbf;                /* txbf capabilities */
  527         uint8_t         hc_antenna;             /* antenna capabilities */
  528 } __packed;
  529 
  530 /* HT capability flags (ht_cap) */
  531 #define IEEE80211_HTCAP_LDPC            0x0001  /* LDPC supported */
  532 #define IEEE80211_HTCAP_CHWIDTH40       0x0002  /* 20/40 supported */
  533 #define IEEE80211_HTCAP_SMPS            0x000c  /* SM Power Save mode */
  534 #define IEEE80211_HTCAP_SMPS_OFF        0x000c  /* disabled */
  535 #define IEEE80211_HTCAP_SMPS_DYNAMIC    0x0004  /* send RTS first */
  536 /* NB: SMPS value 2 is reserved */
  537 #define IEEE80211_HTCAP_SMPS_ENA        0x0000  /* enabled (static mode) */
  538 #define IEEE80211_HTCAP_GREENFIELD      0x0010  /* Greenfield supported */
  539 #define IEEE80211_HTCAP_SHORTGI20       0x0020  /* Short GI in 20MHz */
  540 #define IEEE80211_HTCAP_SHORTGI40       0x0040  /* Short GI in 40MHz */
  541 #define IEEE80211_HTCAP_TXSTBC          0x0080  /* STBC tx ok */
  542 #define IEEE80211_HTCAP_RXSTBC          0x0300  /* STBC rx support */
  543 #define IEEE80211_HTCAP_RXSTBC_S        8
  544 #define IEEE80211_HTCAP_RXSTBC_1STREAM  0x0100  /* 1 spatial stream */
  545 #define IEEE80211_HTCAP_RXSTBC_2STREAM  0x0200  /* 1-2 spatial streams*/
  546 #define IEEE80211_HTCAP_RXSTBC_3STREAM  0x0300  /* 1-3 spatial streams*/
  547 #define IEEE80211_HTCAP_DELBA           0x0400  /* HT DELBA supported */
  548 #define IEEE80211_HTCAP_MAXAMSDU        0x0800  /* max A-MSDU length */
  549 #define IEEE80211_HTCAP_MAXAMSDU_7935   0x0800  /* 7935 octets */
  550 #define IEEE80211_HTCAP_MAXAMSDU_3839   0x0000  /* 3839 octets */
  551 #define IEEE80211_HTCAP_DSSSCCK40       0x1000  /* DSSS/CCK in 40MHz */
  552 #define IEEE80211_HTCAP_PSMP            0x2000  /* PSMP supported */
  553 #define IEEE80211_HTCAP_40INTOLERANT    0x4000  /* 40MHz intolerant */
  554 #define IEEE80211_HTCAP_LSIGTXOPPROT    0x8000  /* L-SIG TXOP prot */
  555 
  556 /* HT parameters (hc_param) */
  557 #define IEEE80211_HTCAP_MAXRXAMPDU      0x03    /* max rx A-MPDU factor */
  558 #define IEEE80211_HTCAP_MAXRXAMPDU_S    0
  559 #define IEEE80211_HTCAP_MAXRXAMPDU_8K   0
  560 #define IEEE80211_HTCAP_MAXRXAMPDU_16K  1
  561 #define IEEE80211_HTCAP_MAXRXAMPDU_32K  2
  562 #define IEEE80211_HTCAP_MAXRXAMPDU_64K  3
  563 #define IEEE80211_HTCAP_MPDUDENSITY     0x1c    /* min MPDU start spacing */
  564 #define IEEE80211_HTCAP_MPDUDENSITY_S   2
  565 #define IEEE80211_HTCAP_MPDUDENSITY_NA  0       /* no time restriction */
  566 #define IEEE80211_HTCAP_MPDUDENSITY_025 1       /* 1/4 us */
  567 #define IEEE80211_HTCAP_MPDUDENSITY_05  2       /* 1/2 us */
  568 #define IEEE80211_HTCAP_MPDUDENSITY_1   3       /* 1 us */
  569 #define IEEE80211_HTCAP_MPDUDENSITY_2   4       /* 2 us */
  570 #define IEEE80211_HTCAP_MPDUDENSITY_4   5       /* 4 us */
  571 #define IEEE80211_HTCAP_MPDUDENSITY_8   6       /* 8 us */
  572 #define IEEE80211_HTCAP_MPDUDENSITY_16  7       /* 16 us */
  573 
  574 /* HT extended capabilities (hc_extcap) */
  575 #define IEEE80211_HTCAP_PCO             0x0001  /* PCO capable */
  576 #define IEEE80211_HTCAP_PCOTRANS        0x0006  /* PCO transition time */
  577 #define IEEE80211_HTCAP_PCOTRANS_S      1
  578 #define IEEE80211_HTCAP_PCOTRANS_04     0x0002  /* 400 us */
  579 #define IEEE80211_HTCAP_PCOTRANS_15     0x0004  /* 1.5 ms */
  580 #define IEEE80211_HTCAP_PCOTRANS_5      0x0006  /* 5 ms */
  581 /* bits 3-7 reserved */
  582 #define IEEE80211_HTCAP_MCSFBACK        0x0300  /* MCS feedback */
  583 #define IEEE80211_HTCAP_MCSFBACK_S      8
  584 #define IEEE80211_HTCAP_MCSFBACK_NONE   0x0000  /* nothing provided */
  585 #define IEEE80211_HTCAP_MCSFBACK_UNSOL  0x0200  /* unsolicited feedback */
  586 #define IEEE80211_HTCAP_MCSFBACK_MRQ    0x0300  /* " "+respond to MRQ */
  587 #define IEEE80211_HTCAP_HTC             0x0400  /* +HTC support */
  588 #define IEEE80211_HTCAP_RDR             0x0800  /* reverse direction responder*/
  589 /* bits 12-15 reserved */
  590 
  591 /*
  592  * 802.11n HT Information IE
  593  */
  594 struct ieee80211_ie_htinfo {
  595         uint8_t         hi_id;                  /* element ID */
  596         uint8_t         hi_len;                 /* length in bytes */
  597         uint8_t         hi_ctrlchannel;         /* primary channel */
  598         uint8_t         hi_byte1;               /* ht ie byte 1 */
  599         uint8_t         hi_byte2;               /* ht ie byte 2 */
  600         uint8_t         hi_byte3;               /* ht ie byte 3 */
  601         uint16_t        hi_byte45;              /* ht ie bytes 4+5 */
  602         uint8_t         hi_basicmcsset[16];     /* basic MCS set */
  603 } __packed;
  604 
  605 /* byte1 */
  606 #define IEEE80211_HTINFO_2NDCHAN        0x03    /* secondary/ext chan offset */
  607 #define IEEE80211_HTINFO_2NDCHAN_S      0
  608 #define IEEE80211_HTINFO_2NDCHAN_NONE   0x00    /* no secondary/ext channel */
  609 #define IEEE80211_HTINFO_2NDCHAN_ABOVE  0x01    /* above private channel */
  610 /* NB: 2 is reserved */
  611 #define IEEE80211_HTINFO_2NDCHAN_BELOW  0x03    /* below primary channel */ 
  612 #define IEEE80211_HTINFO_TXWIDTH        0x04    /* tx channel width */
  613 #define IEEE80211_HTINFO_TXWIDTH_20     0x00    /* 20MHz width */
  614 #define IEEE80211_HTINFO_TXWIDTH_2040   0x04    /* any supported width */
  615 #define IEEE80211_HTINFO_RIFSMODE       0x08    /* Reduced IFS (RIFS) use */
  616 #define IEEE80211_HTINFO_RIFSMODE_PROH  0x00    /* RIFS use prohibited */
  617 #define IEEE80211_HTINFO_RIFSMODE_PERM  0x08    /* RIFS use permitted */
  618 #define IEEE80211_HTINFO_PMSPONLY       0x10    /* PSMP required to associate */
  619 #define IEEE80211_HTINFO_SIGRAN         0xe0    /* shortest Service Interval */
  620 #define IEEE80211_HTINFO_SIGRAN_S       5
  621 #define IEEE80211_HTINFO_SIGRAN_5       0x00    /* 5 ms */
  622 /* XXX add rest */
  623 
  624 /* bytes 2+3 */
  625 #define IEEE80211_HTINFO_OPMODE         0x03    /* operating mode */
  626 #define IEEE80211_HTINFO_OPMODE_S       0
  627 #define IEEE80211_HTINFO_OPMODE_PURE    0x00    /* no protection */
  628 #define IEEE80211_HTINFO_OPMODE_PROTOPT 0x01    /* protection optional */
  629 #define IEEE80211_HTINFO_OPMODE_HT20PR  0x02    /* protection for HT20 sta's */
  630 #define IEEE80211_HTINFO_OPMODE_MIXED   0x03    /* protection for legacy sta's*/
  631 #define IEEE80211_HTINFO_NONGF_PRESENT  0x04    /* non-GF sta's present */
  632 #define IEEE80211_HTINFO_TXBL           0x08    /* transmit burst limit */
  633 #define IEEE80211_HTINFO_NONHT_PRESENT  0x10    /* non-HT sta's present */
  634 /* bits 5-15 reserved */
  635 
  636 /* bytes 4+5 */
  637 #define IEEE80211_HTINFO_2NDARYBEACON   0x01
  638 #define IEEE80211_HTINFO_LSIGTXOPPROT   0x02
  639 #define IEEE80211_HTINFO_PCO_ACTIVE     0x04
  640 #define IEEE80211_HTINFO_40MHZPHASE     0x08
  641 
  642 /* byte5 */
  643 #define IEEE80211_HTINFO_BASIC_STBCMCS  0x7f
  644 #define IEEE80211_HTINFO_BASIC_STBCMCS_S 0
  645 #define IEEE80211_HTINFO_DUALPROTECTED  0x80
  646 
  647 /*
  648  * Management information element payloads.
  649  */
  650 
  651 enum {
  652         IEEE80211_ELEMID_SSID           = 0,
  653         IEEE80211_ELEMID_RATES          = 1,
  654         IEEE80211_ELEMID_FHPARMS        = 2,
  655         IEEE80211_ELEMID_DSPARMS        = 3,
  656         IEEE80211_ELEMID_CFPARMS        = 4,
  657         IEEE80211_ELEMID_TIM            = 5,
  658         IEEE80211_ELEMID_IBSSPARMS      = 6,
  659         IEEE80211_ELEMID_COUNTRY        = 7,
  660         IEEE80211_ELEMID_CHALLENGE      = 16,
  661         /* 17-31 reserved for challenge text extension */
  662         IEEE80211_ELEMID_PWRCNSTR       = 32,
  663         IEEE80211_ELEMID_PWRCAP         = 33,
  664         IEEE80211_ELEMID_TPCREQ         = 34,
  665         IEEE80211_ELEMID_TPCREP         = 35,
  666         IEEE80211_ELEMID_SUPPCHAN       = 36,
  667         IEEE80211_ELEMID_CHANSWITCHANN  = 37,
  668         IEEE80211_ELEMID_MEASREQ        = 38,
  669         IEEE80211_ELEMID_MEASREP        = 39,
  670         IEEE80211_ELEMID_QUIET          = 40,
  671         IEEE80211_ELEMID_IBSSDFS        = 41,
  672         IEEE80211_ELEMID_ERP            = 42,
  673         IEEE80211_ELEMID_HTCAP          = 45,
  674         IEEE80211_ELEMID_RSN            = 48,
  675         IEEE80211_ELEMID_XRATES         = 50,
  676         IEEE80211_ELEMID_HTINFO         = 61,
  677         IEEE80211_ELEMID_TPC            = 150,
  678         IEEE80211_ELEMID_CCKM           = 156,
  679         IEEE80211_ELEMID_VENDOR         = 221,  /* vendor private */
  680 };
  681 
  682 struct ieee80211_tim_ie {
  683         uint8_t         tim_ie;                 /* IEEE80211_ELEMID_TIM */
  684         uint8_t         tim_len;
  685         uint8_t         tim_count;              /* DTIM count */
  686         uint8_t         tim_period;             /* DTIM period */
  687         uint8_t         tim_bitctl;             /* bitmap control */
  688         uint8_t         tim_bitmap[1];          /* variable-length bitmap */
  689 } __packed;
  690 
  691 struct ieee80211_country_ie {
  692         uint8_t         ie;                     /* IEEE80211_ELEMID_COUNTRY */
  693         uint8_t         len;
  694         uint8_t         cc[3];                  /* ISO CC+(I)ndoor/(O)utdoor */
  695         struct {
  696                 uint8_t schan;                  /* starting channel */
  697                 uint8_t nchan;                  /* number channels */
  698                 uint8_t maxtxpwr;               /* tx power cap */
  699         } __packed band[10];                    /* sub bands */
  700 } __packed;
  701 
  702 /*
  703  * 802.11h Channel Switch Announcement (CSA).
  704  */
  705 struct ieee80211_csa_ie {
  706         uint8_t         csa_ie;         /* IEEE80211_ELEMID_CHANSWITCHANN */
  707         uint8_t         csa_len;
  708         uint8_t         csa_mode;               /* Channel Switch Mode */
  709         uint8_t         csa_newchan;            /* New Channel Number */
  710         uint8_t         csa_count;              /* Channel Switch Count */
  711 } __packed;
  712 
  713 /*
  714  * Atheros advanced capability information element.
  715  */
  716 struct ieee80211_ath_ie {
  717         uint8_t         ath_id;                 /* IEEE80211_ELEMID_VENDOR */
  718         uint8_t         ath_len;                /* length in bytes */
  719         uint8_t         ath_oui[3];             /* 0x00, 0x03, 0x7f */
  720         uint8_t         ath_oui_type;           /* OUI type */
  721         uint8_t         ath_oui_subtype;        /* OUI subtype */
  722         uint8_t         ath_version;            /* spec revision */
  723         uint8_t         ath_capability;         /* capability info */
  724 #define ATHEROS_CAP_TURBO_PRIME         0x01    /* dynamic turbo--aka Turbo' */
  725 #define ATHEROS_CAP_COMPRESSION         0x02    /* data compression */
  726 #define ATHEROS_CAP_FAST_FRAME          0x04    /* fast (jumbo) frames */
  727 #define ATHEROS_CAP_XR                  0x08    /* Xtended Range support */
  728 #define ATHEROS_CAP_AR                  0x10    /* Advanded Radar support */
  729 #define ATHEROS_CAP_BURST               0x20    /* Bursting - not negotiated */
  730 #define ATHEROS_CAP_WME                 0x40    /* CWMin tuning */
  731 #define ATHEROS_CAP_BOOST               0x80    /* use turbo/!turbo mode */
  732         uint8_t         ath_defkeyix[2];
  733 } __packed;
  734 
  735 /* rate set entries are in .5 Mb/s units, and potentially marked as basic */
  736 #define IEEE80211_RATE_BASIC            0x80
  737 #define IEEE80211_RATE_VAL              0x7f
  738 
  739 /* EPR information element flags */
  740 #define IEEE80211_ERP_NON_ERP_PRESENT   0x01
  741 #define IEEE80211_ERP_USE_PROTECTION    0x02
  742 #define IEEE80211_ERP_LONG_PREAMBLE     0x04
  743 
  744 #define ATH_OUI                 0x7f0300        /* Atheros OUI */
  745 #define ATH_OUI_TYPE            0x01
  746 #define ATH_OUI_SUBTYPE         0x01
  747 #define ATH_OUI_VERSION         0x00
  748 
  749 #define BCM_OUI                 0x4c9000        /* Broadcom OUI */
  750 #define BCM_OUI_HTCAP           51              /* pre-draft HTCAP ie */
  751 #define BCM_OUI_HTINFO          52              /* pre-draft HTINFO ie */
  752 
  753 #define WPA_OUI                 0xf25000
  754 #define WPA_OUI_TYPE            0x01
  755 #define WPA_VERSION             1               /* current supported version */
  756 
  757 #define WPA_CSE_NULL            0x00
  758 #define WPA_CSE_WEP40           0x01
  759 #define WPA_CSE_TKIP            0x02
  760 #define WPA_CSE_CCMP            0x04
  761 #define WPA_CSE_WEP104          0x05
  762 
  763 #define WPA_ASE_NONE            0x00
  764 #define WPA_ASE_8021X_UNSPEC    0x01
  765 #define WPA_ASE_8021X_PSK       0x02
  766 
  767 #define WPS_OUI_TYPE            0x04
  768 
  769 #define RSN_OUI                 0xac0f00
  770 #define RSN_VERSION             1               /* current supported version */
  771 
  772 #define RSN_CSE_NULL            0x00
  773 #define RSN_CSE_WEP40           0x01
  774 #define RSN_CSE_TKIP            0x02
  775 #define RSN_CSE_WRAP            0x03
  776 #define RSN_CSE_CCMP            0x04
  777 #define RSN_CSE_WEP104          0x05
  778 
  779 #define RSN_ASE_NONE            0x00
  780 #define RSN_ASE_8021X_UNSPEC    0x01
  781 #define RSN_ASE_8021X_PSK       0x02
  782 
  783 #define RSN_CAP_PREAUTH         0x01
  784 
  785 #define WME_OUI                 0xf25000
  786 #define WME_OUI_TYPE            0x02
  787 #define WME_INFO_OUI_SUBTYPE    0x00
  788 #define WME_PARAM_OUI_SUBTYPE   0x01
  789 #define WME_VERSION             1
  790 
  791 /* WME stream classes */
  792 #define WME_AC_BE       0               /* best effort */
  793 #define WME_AC_BK       1               /* background */
  794 #define WME_AC_VI       2               /* video */
  795 #define WME_AC_VO       3               /* voice */
  796 
  797 /*
  798  * AUTH management packets
  799  *
  800  *      octet algo[2]
  801  *      octet seq[2]
  802  *      octet status[2]
  803  *      octet chal.id
  804  *      octet chal.length
  805  *      octet chal.text[253]            NB: 1-253 bytes
  806  */
  807 
  808 /* challenge length for shared key auth */
  809 #define IEEE80211_CHALLENGE_LEN         128
  810 
  811 #define IEEE80211_AUTH_ALG_OPEN         0x0000
  812 #define IEEE80211_AUTH_ALG_SHARED       0x0001
  813 #define IEEE80211_AUTH_ALG_LEAP         0x0080
  814 
  815 enum {
  816         IEEE80211_AUTH_OPEN_REQUEST             = 1,
  817         IEEE80211_AUTH_OPEN_RESPONSE            = 2,
  818 };
  819 
  820 enum {
  821         IEEE80211_AUTH_SHARED_REQUEST           = 1,
  822         IEEE80211_AUTH_SHARED_CHALLENGE         = 2,
  823         IEEE80211_AUTH_SHARED_RESPONSE          = 3,
  824         IEEE80211_AUTH_SHARED_PASS              = 4,
  825 };
  826 
  827 /*
  828  * Reason and status codes.
  829  *
  830  * Reason codes are used in management frames to indicate why an
  831  * action took place (e.g. on disassociation).  Status codes are
  832  * used in management frames to indicate the result of an operation.
  833  *
  834  * Unlisted codes are reserved
  835  */
  836 
  837 enum {
  838         IEEE80211_REASON_UNSPECIFIED            = 1,
  839         IEEE80211_REASON_AUTH_EXPIRE            = 2,
  840         IEEE80211_REASON_AUTH_LEAVE             = 3,
  841         IEEE80211_REASON_ASSOC_EXPIRE           = 4,
  842         IEEE80211_REASON_ASSOC_TOOMANY          = 5,
  843         IEEE80211_REASON_NOT_AUTHED             = 6,
  844         IEEE80211_REASON_NOT_ASSOCED            = 7,
  845         IEEE80211_REASON_ASSOC_LEAVE            = 8,
  846         IEEE80211_REASON_ASSOC_NOT_AUTHED       = 9,
  847         IEEE80211_REASON_DISASSOC_PWRCAP_BAD    = 10,   /* 11h */
  848         IEEE80211_REASON_DISASSOC_SUPCHAN_BAD   = 11,   /* 11h */
  849         IEEE80211_REASON_IE_INVALID             = 13,   /* 11i */
  850         IEEE80211_REASON_MIC_FAILURE            = 14,   /* 11i */
  851         IEEE80211_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,   /* 11i */
  852         IEEE80211_REASON_GROUP_KEY_UPDATE_TIMEOUT = 16, /* 11i */
  853         IEEE80211_REASON_IE_IN_4WAY_DIFFERS     = 17,   /* 11i */
  854         IEEE80211_REASON_GROUP_CIPHER_INVALID   = 18,   /* 11i */
  855         IEEE80211_REASON_PAIRWISE_CIPHER_INVALID= 19,   /* 11i */
  856         IEEE80211_REASON_AKMP_INVALID           = 20,   /* 11i */
  857         IEEE80211_REASON_UNSUPP_RSN_IE_VERSION  = 21,   /* 11i */
  858         IEEE80211_REASON_INVALID_RSN_IE_CAP     = 22,   /* 11i */
  859         IEEE80211_REASON_802_1X_AUTH_FAILED     = 23,   /* 11i */
  860         IEEE80211_REASON_CIPHER_SUITE_REJECTED  = 24,   /* 11i */
  861 
  862         IEEE80211_STATUS_SUCCESS                = 0,
  863         IEEE80211_STATUS_UNSPECIFIED            = 1,
  864         IEEE80211_STATUS_CAPINFO                = 10,
  865         IEEE80211_STATUS_NOT_ASSOCED            = 11,
  866         IEEE80211_STATUS_OTHER                  = 12,
  867         IEEE80211_STATUS_ALG                    = 13,
  868         IEEE80211_STATUS_SEQUENCE               = 14,
  869         IEEE80211_STATUS_CHALLENGE              = 15,
  870         IEEE80211_STATUS_TIMEOUT                = 16,
  871         IEEE80211_STATUS_TOOMANY                = 17,
  872         IEEE80211_STATUS_BASIC_RATE             = 18,
  873         IEEE80211_STATUS_SP_REQUIRED            = 19,   /* 11b */
  874         IEEE80211_STATUS_PBCC_REQUIRED          = 20,   /* 11b */
  875         IEEE80211_STATUS_CA_REQUIRED            = 21,   /* 11b */
  876         IEEE80211_STATUS_SPECMGMT_REQUIRED      = 22,   /* 11h */
  877         IEEE80211_STATUS_PWRCAP_REQUIRED        = 23,   /* 11h */
  878         IEEE80211_STATUS_SUPCHAN_REQUIRED       = 24,   /* 11h */
  879         IEEE80211_STATUS_SHORTSLOT_REQUIRED     = 25,   /* 11g */
  880         IEEE80211_STATUS_DSSSOFDM_REQUIRED      = 26,   /* 11g */
  881         IEEE80211_STATUS_INVALID_IE             = 40,   /* 11i */
  882         IEEE80211_STATUS_GROUP_CIPHER_INVALID   = 41,   /* 11i */
  883         IEEE80211_STATUS_PAIRWISE_CIPHER_INVALID = 42,  /* 11i */
  884         IEEE80211_STATUS_AKMP_INVALID           = 43,   /* 11i */
  885         IEEE80211_STATUS_UNSUPP_RSN_IE_VERSION  = 44,   /* 11i */
  886         IEEE80211_STATUS_INVALID_RSN_IE_CAP     = 45,   /* 11i */
  887         IEEE80211_STATUS_CIPHER_SUITE_REJECTED  = 46,   /* 11i */
  888 };
  889 
  890 #define IEEE80211_WEP_KEYLEN            5       /* 40bit */
  891 #define IEEE80211_WEP_IVLEN             3       /* 24bit */
  892 #define IEEE80211_WEP_KIDLEN            1       /* 1 octet */
  893 #define IEEE80211_WEP_CRCLEN            4       /* CRC-32 */
  894 #define IEEE80211_WEP_NKID              4       /* number of key ids */
  895 
  896 /*
  897  * 802.11i defines an extended IV for use with non-WEP ciphers.
  898  * When the EXTIV bit is set in the key id byte an additional
  899  * 4 bytes immediately follow the IV for TKIP.  For CCMP the
  900  * EXTIV bit is likewise set but the 8 bytes represent the
  901  * CCMP header rather than IV+extended-IV.
  902  */
  903 #define IEEE80211_WEP_EXTIV             0x20
  904 #define IEEE80211_WEP_EXTIVLEN          4       /* extended IV length */
  905 #define IEEE80211_WEP_MICLEN            8       /* trailing MIC */
  906 
  907 #define IEEE80211_CRC_LEN               4
  908 
  909 /*
  910  * Maximum acceptable MTU is:
  911  *      IEEE80211_MAX_LEN - WEP overhead - CRC -
  912  *              QoS overhead - RSN/WPA overhead
  913  * Min is arbitrarily chosen > IEEE80211_MIN_LEN.  The default
  914  * mtu is Ethernet-compatible; it's set by ether_ifattach.
  915  */
  916 #define IEEE80211_MTU_MAX               2290
  917 #define IEEE80211_MTU_MIN               32
  918 
  919 #define IEEE80211_MAX_LEN               (2300 + IEEE80211_CRC_LEN + \
  920     (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN))
  921 #define IEEE80211_ACK_LEN \
  922         (sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN)
  923 #define IEEE80211_MIN_LEN \
  924         (sizeof(struct ieee80211_frame_min) + IEEE80211_CRC_LEN)
  925 
  926 /*
  927  * The 802.11 spec says at most 2007 stations may be
  928  * associated at once.  For most AP's this is way more
  929  * than is feasible so we use a default of 128.  This
  930  * number may be overridden by the driver and/or by
  931  * user configuration.
  932  */
  933 #define IEEE80211_AID_MAX               2007
  934 #define IEEE80211_AID_DEF               128
  935 
  936 #define IEEE80211_AID(b)        ((b) &~ 0xc000)
  937 
  938 /* 
  939  * RTS frame length parameters.  The default is specified in
  940  * the 802.11 spec as 512; we treat it as implementation-dependent
  941  * so it's defined in ieee80211_var.h.  The max may be wrong
  942  * for jumbo frames.
  943  */
  944 #define IEEE80211_RTS_MIN               1
  945 #define IEEE80211_RTS_MAX               2346
  946 
  947 /* 
  948  * TX fragmentation parameters.  As above for RTS, we treat
  949  * default as implementation-dependent so define it elsewhere.
  950  */
  951 #define IEEE80211_FRAG_MIN              256
  952 #define IEEE80211_FRAG_MAX              2346
  953 
  954 /*
  955  * Beacon interval (TU's).  Min+max come from WiFi requirements.
  956  * As above, we treat default as implementation-dependent so
  957  * define it elsewhere.
  958  */
  959 #define IEEE80211_BINTVAL_MAX   1000    /* max beacon interval (TU's) */
  960 #define IEEE80211_BINTVAL_MIN   25      /* min beacon interval (TU's) */
  961 
  962 /*
  963  * DTIM period (beacons).  Min+max are not really defined
  964  * by the protocol but we want them publicly visible so
  965  * define them here.
  966  */
  967 #define IEEE80211_DTIM_MAX      15      /* max DTIM period */
  968 #define IEEE80211_DTIM_MIN      1       /* min DTIM period */
  969 
  970 /*
  971  * Beacon miss threshold (beacons).  As for DTIM, we define
  972  * them here to be publicly visible.  Note the max may be
  973  * clamped depending on device capabilities.
  974  */
  975 #define IEEE80211_HWBMISS_MIN   1
  976 #define IEEE80211_HWBMISS_MAX   255
  977 
  978 /*
  979  * 802.11 frame duration definitions.
  980  */
  981 
  982 struct ieee80211_duration {
  983         uint16_t        d_rts_dur;
  984         uint16_t        d_data_dur;
  985         uint16_t        d_plcp_len;
  986         uint8_t         d_residue;      /* unused octets in time slot */
  987 };
  988 
  989 /* One Time Unit (TU) is 1Kus = 1024 microseconds. */
  990 #define IEEE80211_DUR_TU                1024
  991 
  992 /* IEEE 802.11b durations for DSSS PHY in microseconds */
  993 #define IEEE80211_DUR_DS_LONG_PREAMBLE  144
  994 #define IEEE80211_DUR_DS_SHORT_PREAMBLE 72
  995 
  996 #define IEEE80211_DUR_DS_SLOW_PLCPHDR   48
  997 #define IEEE80211_DUR_DS_FAST_PLCPHDR   24
  998 #define IEEE80211_DUR_DS_SLOW_ACK       112
  999 #define IEEE80211_DUR_DS_FAST_ACK       56
 1000 #define IEEE80211_DUR_DS_SLOW_CTS       112
 1001 #define IEEE80211_DUR_DS_FAST_CTS       56
 1002 
 1003 #define IEEE80211_DUR_DS_SLOT           20
 1004 #define IEEE80211_DUR_DS_SIFS           10
 1005 #define IEEE80211_DUR_DS_PIFS   (IEEE80211_DUR_DS_SIFS + IEEE80211_DUR_DS_SLOT)
 1006 #define IEEE80211_DUR_DS_DIFS   (IEEE80211_DUR_DS_SIFS + \
 1007                                  2 * IEEE80211_DUR_DS_SLOT)
 1008 #define IEEE80211_DUR_DS_EIFS   (IEEE80211_DUR_DS_SIFS + \
 1009                                  IEEE80211_DUR_DS_SLOW_ACK + \
 1010                                  IEEE80211_DUR_DS_LONG_PREAMBLE + \
 1011                                  IEEE80211_DUR_DS_SLOW_PLCPHDR + \
 1012                                  IEEE80211_DUR_DIFS)
 1013 
 1014 /*
 1015  * Atheros fast-frame encapsulation format.
 1016  * FF max payload:
 1017  * 802.2 + FFHDR + HPAD + 802.3 + 802.2 + 1500 + SPAD + 802.3 + 802.2 + 1500:
 1018  *   8   +   4   +  4   +   14  +   8   + 1500 +  6   +   14  +   8   + 1500
 1019  * = 3066
 1020  */
 1021 /* fast frame header is 32-bits */
 1022 #define ATH_FF_PROTO    0x0000003f      /* protocol */
 1023 #define ATH_FF_PROTO_S  0
 1024 #define ATH_FF_FTYPE    0x000000c0      /* frame type */
 1025 #define ATH_FF_FTYPE_S  6
 1026 #define ATH_FF_HLEN32   0x00000300      /* optional hdr length */
 1027 #define ATH_FF_HLEN32_S 8
 1028 #define ATH_FF_SEQNUM   0x001ffc00      /* sequence number */
 1029 #define ATH_FF_SEQNUM_S 10
 1030 #define ATH_FF_OFFSET   0xffe00000      /* offset to 2nd payload */
 1031 #define ATH_FF_OFFSET_S 21
 1032 
 1033 #define ATH_FF_MAX_HDR_PAD      4
 1034 #define ATH_FF_MAX_SEP_PAD      6
 1035 #define ATH_FF_MAX_HDR          30
 1036 
 1037 #define ATH_FF_PROTO_L2TUNNEL   0       /* L2 tunnel protocol */
 1038 #define ATH_FF_ETH_TYPE         0x88bd  /* Ether type for encapsulated frames */
 1039 #define ATH_FF_SNAP_ORGCODE_0   0x00
 1040 #define ATH_FF_SNAP_ORGCODE_1   0x03
 1041 #define ATH_FF_SNAP_ORGCODE_2   0x7f
 1042 
 1043 #endif /* _NET80211_IEEE80211_H_ */

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