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) 2002-2009 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/9/sys/net80211/ieee80211.h 266507 2014-05-21 17:02:21Z hselasky $
   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 typedef uint16_t ieee80211_seq;
   40 
   41 /* IEEE 802.11 PLCP header */
   42 struct ieee80211_plcp_hdr {
   43         uint16_t        i_sfd;
   44         uint8_t         i_signal;
   45         uint8_t         i_service;
   46         uint16_t        i_length;
   47         uint16_t        i_crc;
   48 } __packed;
   49 
   50 #define IEEE80211_PLCP_SFD      0xF3A0 
   51 #define IEEE80211_PLCP_SERVICE  0x00
   52 #define IEEE80211_PLCP_SERVICE_LOCKED   0x04
   53 #define IEEE80211_PLCL_SERVICE_PBCC     0x08
   54 #define IEEE80211_PLCP_SERVICE_LENEXT5  0x20
   55 #define IEEE80211_PLCP_SERVICE_LENEXT6  0x40
   56 #define IEEE80211_PLCP_SERVICE_LENEXT7  0x80
   57 
   58 /*
   59  * generic definitions for IEEE 802.11 frames
   60  */
   61 struct ieee80211_frame {
   62         uint8_t         i_fc[2];
   63         uint8_t         i_dur[2];
   64         uint8_t         i_addr1[IEEE80211_ADDR_LEN];
   65         uint8_t         i_addr2[IEEE80211_ADDR_LEN];
   66         uint8_t         i_addr3[IEEE80211_ADDR_LEN];
   67         uint8_t         i_seq[2];
   68         /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
   69         /* see below */
   70 } __packed;
   71 
   72 struct ieee80211_qosframe {
   73         uint8_t         i_fc[2];
   74         uint8_t         i_dur[2];
   75         uint8_t         i_addr1[IEEE80211_ADDR_LEN];
   76         uint8_t         i_addr2[IEEE80211_ADDR_LEN];
   77         uint8_t         i_addr3[IEEE80211_ADDR_LEN];
   78         uint8_t         i_seq[2];
   79         uint8_t         i_qos[2];
   80         /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
   81         /* see below */
   82 } __packed;
   83 
   84 struct ieee80211_qoscntl {
   85         uint8_t         i_qos[2];
   86 };
   87 
   88 struct ieee80211_frame_addr4 {
   89         uint8_t         i_fc[2];
   90         uint8_t         i_dur[2];
   91         uint8_t         i_addr1[IEEE80211_ADDR_LEN];
   92         uint8_t         i_addr2[IEEE80211_ADDR_LEN];
   93         uint8_t         i_addr3[IEEE80211_ADDR_LEN];
   94         uint8_t         i_seq[2];
   95         uint8_t         i_addr4[IEEE80211_ADDR_LEN];
   96 } __packed;
   97 
   98 
   99 struct ieee80211_qosframe_addr4 {
  100         uint8_t         i_fc[2];
  101         uint8_t         i_dur[2];
  102         uint8_t         i_addr1[IEEE80211_ADDR_LEN];
  103         uint8_t         i_addr2[IEEE80211_ADDR_LEN];
  104         uint8_t         i_addr3[IEEE80211_ADDR_LEN];
  105         uint8_t         i_seq[2];
  106         uint8_t         i_addr4[IEEE80211_ADDR_LEN];
  107         uint8_t         i_qos[2];
  108 } __packed;
  109 
  110 #define IEEE80211_FC0_VERSION_MASK              0x03
  111 #define IEEE80211_FC0_VERSION_SHIFT             0
  112 #define IEEE80211_FC0_VERSION_0                 0x00
  113 #define IEEE80211_FC0_TYPE_MASK                 0x0c
  114 #define IEEE80211_FC0_TYPE_SHIFT                2
  115 #define IEEE80211_FC0_TYPE_MGT                  0x00
  116 #define IEEE80211_FC0_TYPE_CTL                  0x04
  117 #define IEEE80211_FC0_TYPE_DATA                 0x08
  118 
  119 #define IEEE80211_FC0_SUBTYPE_MASK              0xf0
  120 #define IEEE80211_FC0_SUBTYPE_SHIFT             4
  121 /* for TYPE_MGT */
  122 #define IEEE80211_FC0_SUBTYPE_ASSOC_REQ         0x00
  123 #define IEEE80211_FC0_SUBTYPE_ASSOC_RESP        0x10
  124 #define IEEE80211_FC0_SUBTYPE_REASSOC_REQ       0x20
  125 #define IEEE80211_FC0_SUBTYPE_REASSOC_RESP      0x30
  126 #define IEEE80211_FC0_SUBTYPE_PROBE_REQ         0x40
  127 #define IEEE80211_FC0_SUBTYPE_PROBE_RESP        0x50
  128 #define IEEE80211_FC0_SUBTYPE_BEACON            0x80
  129 #define IEEE80211_FC0_SUBTYPE_ATIM              0x90
  130 #define IEEE80211_FC0_SUBTYPE_DISASSOC          0xa0
  131 #define IEEE80211_FC0_SUBTYPE_AUTH              0xb0
  132 #define IEEE80211_FC0_SUBTYPE_DEAUTH            0xc0
  133 #define IEEE80211_FC0_SUBTYPE_ACTION            0xd0
  134 #define IEEE80211_FC0_SUBTYPE_ACTION_NOACK      0xe0
  135 /* for TYPE_CTL */
  136 #define IEEE80211_FC0_SUBTYPE_BAR               0x80
  137 #define IEEE80211_FC0_SUBTYPE_BA                0x90
  138 #define IEEE80211_FC0_SUBTYPE_PS_POLL           0xa0
  139 #define IEEE80211_FC0_SUBTYPE_RTS               0xb0
  140 #define IEEE80211_FC0_SUBTYPE_CTS               0xc0
  141 #define IEEE80211_FC0_SUBTYPE_ACK               0xd0
  142 #define IEEE80211_FC0_SUBTYPE_CF_END            0xe0
  143 #define IEEE80211_FC0_SUBTYPE_CF_END_ACK        0xf0
  144 /* for TYPE_DATA (bit combination) */
  145 #define IEEE80211_FC0_SUBTYPE_DATA              0x00
  146 #define IEEE80211_FC0_SUBTYPE_CF_ACK            0x10
  147 #define IEEE80211_FC0_SUBTYPE_CF_POLL           0x20
  148 #define IEEE80211_FC0_SUBTYPE_CF_ACPL           0x30
  149 #define IEEE80211_FC0_SUBTYPE_NODATA            0x40
  150 #define IEEE80211_FC0_SUBTYPE_CFACK             0x50
  151 #define IEEE80211_FC0_SUBTYPE_CFPOLL            0x60
  152 #define IEEE80211_FC0_SUBTYPE_CF_ACK_CF_ACK     0x70
  153 #define IEEE80211_FC0_SUBTYPE_QOS               0x80
  154 #define IEEE80211_FC0_SUBTYPE_QOS_NULL          0xc0
  155 
  156 #define IEEE80211_FC1_DIR_MASK                  0x03
  157 #define IEEE80211_FC1_DIR_NODS                  0x00    /* STA->STA */
  158 #define IEEE80211_FC1_DIR_TODS                  0x01    /* STA->AP  */
  159 #define IEEE80211_FC1_DIR_FROMDS                0x02    /* AP ->STA */
  160 #define IEEE80211_FC1_DIR_DSTODS                0x03    /* AP ->AP  */
  161 
  162 #define IEEE80211_IS_DSTODS(wh) \
  163         (((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS)
  164 
  165 #define IEEE80211_FC1_MORE_FRAG                 0x04
  166 #define IEEE80211_FC1_RETRY                     0x08
  167 #define IEEE80211_FC1_PWR_MGT                   0x10
  168 #define IEEE80211_FC1_MORE_DATA                 0x20
  169 #define IEEE80211_FC1_WEP                       0x40
  170 #define IEEE80211_FC1_ORDER                     0x80
  171 
  172 #define IEEE80211_SEQ_FRAG_MASK                 0x000f
  173 #define IEEE80211_SEQ_FRAG_SHIFT                0
  174 #define IEEE80211_SEQ_SEQ_MASK                  0xfff0
  175 #define IEEE80211_SEQ_SEQ_SHIFT                 4
  176 #define IEEE80211_SEQ_RANGE                     4096
  177 
  178 #define IEEE80211_SEQ_ADD(seq, incr) \
  179         (((seq) + (incr)) & (IEEE80211_SEQ_RANGE-1))
  180 #define IEEE80211_SEQ_INC(seq)  IEEE80211_SEQ_ADD(seq,1)
  181 #define IEEE80211_SEQ_SUB(a, b) \
  182         (((a) + IEEE80211_SEQ_RANGE - (b)) & (IEEE80211_SEQ_RANGE-1))
  183 
  184 #define IEEE80211_SEQ_BA_RANGE                  2048    /* 2^11 */
  185 #define IEEE80211_SEQ_BA_BEFORE(a, b) \
  186         (IEEE80211_SEQ_SUB(b, a+1) < IEEE80211_SEQ_BA_RANGE-1)
  187 
  188 #define IEEE80211_NWID_LEN                      32
  189 #define IEEE80211_MESHID_LEN                    32
  190 
  191 #define IEEE80211_QOS_TXOP                      0x00ff
  192 /* bit 8 is reserved */
  193 #define IEEE80211_QOS_AMSDU                     0x80
  194 #define IEEE80211_QOS_AMSDU_S                   7
  195 #define IEEE80211_QOS_ACKPOLICY                 0x60
  196 #define IEEE80211_QOS_ACKPOLICY_S               5
  197 #define IEEE80211_QOS_ACKPOLICY_NOACK           0x20    /* No ACK required */
  198 #define IEEE80211_QOS_ACKPOLICY_BA              0x60    /* Block ACK */
  199 #define IEEE80211_QOS_EOSP                      0x10    /* EndOfService Period*/
  200 #define IEEE80211_QOS_EOSP_S                    4
  201 #define IEEE80211_QOS_TID                       0x0f
  202 
  203 /* does frame have QoS sequence control data */
  204 #define IEEE80211_QOS_HAS_SEQ(wh) \
  205         (((wh)->i_fc[0] & \
  206           (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_QOS)) == \
  207           (IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_QOS))
  208 
  209 /*
  210  * WME/802.11e information element.
  211  */
  212 struct ieee80211_wme_info {
  213         uint8_t         wme_id;         /* IEEE80211_ELEMID_VENDOR */
  214         uint8_t         wme_len;        /* length in bytes */
  215         uint8_t         wme_oui[3];     /* 0x00, 0x50, 0xf2 */
  216         uint8_t         wme_type;       /* OUI type */
  217         uint8_t         wme_subtype;    /* OUI subtype */
  218         uint8_t         wme_version;    /* spec revision */
  219         uint8_t         wme_info;       /* QoS info */
  220 } __packed;
  221 
  222 /*
  223  * WME/802.11e Tspec Element
  224  */
  225 struct ieee80211_wme_tspec {
  226         uint8_t         ts_id;
  227         uint8_t         ts_len;
  228         uint8_t         ts_oui[3];
  229         uint8_t         ts_oui_type;
  230         uint8_t         ts_oui_subtype;
  231         uint8_t         ts_version;
  232         uint8_t         ts_tsinfo[3];
  233         uint8_t         ts_nom_msdu[2];
  234         uint8_t         ts_max_msdu[2];
  235         uint8_t         ts_min_svc[4];
  236         uint8_t         ts_max_svc[4];
  237         uint8_t         ts_inactv_intv[4];
  238         uint8_t         ts_susp_intv[4];
  239         uint8_t         ts_start_svc[4];
  240         uint8_t         ts_min_rate[4];
  241         uint8_t         ts_mean_rate[4];
  242         uint8_t         ts_max_burst[4];
  243         uint8_t         ts_min_phy[4];
  244         uint8_t         ts_peak_rate[4];
  245         uint8_t         ts_delay[4];
  246         uint8_t         ts_surplus[2];
  247         uint8_t         ts_medium_time[2];
  248 } __packed;
  249 
  250 /*
  251  * WME AC parameter field
  252  */
  253 struct ieee80211_wme_acparams {
  254         uint8_t         acp_aci_aifsn;
  255         uint8_t         acp_logcwminmax;
  256         uint16_t        acp_txop;
  257 } __packed;
  258 
  259 #define WME_NUM_AC              4       /* 4 AC categories */
  260 #define WME_NUM_TID             16      /* 16 tids */
  261 
  262 #define WME_PARAM_ACI           0x60    /* Mask for ACI field */
  263 #define WME_PARAM_ACI_S         5       /* Shift for ACI field */
  264 #define WME_PARAM_ACM           0x10    /* Mask for ACM bit */
  265 #define WME_PARAM_ACM_S         4       /* Shift for ACM bit */
  266 #define WME_PARAM_AIFSN         0x0f    /* Mask for aifsn field */
  267 #define WME_PARAM_AIFSN_S       0       /* Shift for aifsn field */
  268 #define WME_PARAM_LOGCWMIN      0x0f    /* Mask for CwMin field (in log) */
  269 #define WME_PARAM_LOGCWMIN_S    0       /* Shift for CwMin field */
  270 #define WME_PARAM_LOGCWMAX      0xf0    /* Mask for CwMax field (in log) */
  271 #define WME_PARAM_LOGCWMAX_S    4       /* Shift for CwMax field */
  272 
  273 #define WME_AC_TO_TID(_ac) (       \
  274         ((_ac) == WME_AC_VO) ? 6 : \
  275         ((_ac) == WME_AC_VI) ? 5 : \
  276         ((_ac) == WME_AC_BK) ? 1 : \
  277         0)
  278 
  279 #define TID_TO_WME_AC(_tid) (      \
  280         ((_tid) == 0 || (_tid) == 3) ? WME_AC_BE : \
  281         ((_tid) < 3) ? WME_AC_BK : \
  282         ((_tid) < 6) ? WME_AC_VI : \
  283         WME_AC_VO)
  284 
  285 /*
  286  * WME Parameter Element
  287  */
  288 struct ieee80211_wme_param {
  289         uint8_t         param_id;
  290         uint8_t         param_len;
  291         uint8_t         param_oui[3];
  292         uint8_t         param_oui_type;
  293         uint8_t         param_oui_subtype;
  294         uint8_t         param_version;
  295         uint8_t         param_qosInfo;
  296 #define WME_QOSINFO_COUNT       0x0f    /* Mask for param count field */
  297         uint8_t         param_reserved;
  298         struct ieee80211_wme_acparams   params_acParams[WME_NUM_AC];
  299 } __packed;
  300 
  301 /*
  302  * Management Notification Frame
  303  */
  304 struct ieee80211_mnf {
  305         uint8_t         mnf_category;
  306         uint8_t         mnf_action;
  307         uint8_t         mnf_dialog;
  308         uint8_t         mnf_status;
  309 } __packed;
  310 #define MNF_SETUP_REQ   0
  311 #define MNF_SETUP_RESP  1
  312 #define MNF_TEARDOWN    2
  313 
  314 /* 
  315  * 802.11n Management Action Frames 
  316  */
  317 /* generic frame format */
  318 struct ieee80211_action {
  319         uint8_t         ia_category;
  320         uint8_t         ia_action;
  321 } __packed;
  322 
  323 #define IEEE80211_ACTION_CAT_SM         0       /* Spectrum Management */
  324 #define IEEE80211_ACTION_CAT_QOS        1       /* QoS */
  325 #define IEEE80211_ACTION_CAT_DLS        2       /* DLS */
  326 #define IEEE80211_ACTION_CAT_BA         3       /* BA */
  327 #define IEEE80211_ACTION_CAT_HT         7       /* HT */
  328 #define IEEE80211_ACTION_CAT_VENDOR     127     /* Vendor Specific */
  329 
  330 #define IEEE80211_ACTION_HT_TXCHWIDTH   0       /* recommended xmit chan width*/
  331 #define IEEE80211_ACTION_HT_MIMOPWRSAVE 1       /* MIMO power save */
  332 
  333 /* HT - recommended transmission channel width */
  334 struct ieee80211_action_ht_txchwidth {
  335         struct ieee80211_action at_header;
  336         uint8_t         at_chwidth;     
  337 } __packed;
  338 
  339 #define IEEE80211_A_HT_TXCHWIDTH_20     0
  340 #define IEEE80211_A_HT_TXCHWIDTH_2040   1
  341 
  342 /* HT - MIMO Power Save (NB: D2.04) */
  343 struct ieee80211_action_ht_mimopowersave {
  344         struct ieee80211_action am_header;
  345         uint8_t         am_control;
  346 } __packed;
  347 
  348 #define IEEE80211_A_HT_MIMOPWRSAVE_ENA          0x01    /* PS enabled */
  349 #define IEEE80211_A_HT_MIMOPWRSAVE_MODE         0x02
  350 #define IEEE80211_A_HT_MIMOPWRSAVE_MODE_S       1
  351 #define IEEE80211_A_HT_MIMOPWRSAVE_DYNAMIC      0x02    /* Dynamic Mode */
  352 #define IEEE80211_A_HT_MIMOPWRSAVE_STATIC       0x00    /* no SM packets */
  353 /* bits 2-7 reserved */
  354 
  355 /* Block Ack actions */
  356 #define IEEE80211_ACTION_BA_ADDBA_REQUEST       0   /* ADDBA request */
  357 #define IEEE80211_ACTION_BA_ADDBA_RESPONSE      1   /* ADDBA response */
  358 #define IEEE80211_ACTION_BA_DELBA               2   /* DELBA */
  359 
  360 /* Block Ack Parameter Set */
  361 #define IEEE80211_BAPS_BUFSIZ   0xffc0          /* buffer size */
  362 #define IEEE80211_BAPS_BUFSIZ_S 6
  363 #define IEEE80211_BAPS_TID      0x003c          /* TID */
  364 #define IEEE80211_BAPS_TID_S    2
  365 #define IEEE80211_BAPS_POLICY   0x0002          /* block ack policy */
  366 #define IEEE80211_BAPS_POLICY_S 1
  367 
  368 #define IEEE80211_BAPS_POLICY_DELAYED   (0<<IEEE80211_BAPS_POLICY_S)
  369 #define IEEE80211_BAPS_POLICY_IMMEDIATE (1<<IEEE80211_BAPS_POLICY_S)
  370 
  371 /* Block Ack Sequence Control */
  372 #define IEEE80211_BASEQ_START   0xfff0          /* starting seqnum */
  373 #define IEEE80211_BASEQ_START_S 4
  374 #define IEEE80211_BASEQ_FRAG    0x000f          /* fragment number */
  375 #define IEEE80211_BASEQ_FRAG_S  0
  376 
  377 /* Delayed Block Ack Parameter Set */
  378 #define IEEE80211_DELBAPS_TID   0xf000          /* TID */
  379 #define IEEE80211_DELBAPS_TID_S 12
  380 #define IEEE80211_DELBAPS_INIT  0x0800          /* initiator */
  381 #define IEEE80211_DELBAPS_INIT_S 11
  382 
  383 /* BA - ADDBA request */
  384 struct ieee80211_action_ba_addbarequest {
  385         struct ieee80211_action rq_header;
  386         uint8_t         rq_dialogtoken;
  387         uint16_t        rq_baparamset;
  388         uint16_t        rq_batimeout;           /* in TUs */
  389         uint16_t        rq_baseqctl;
  390 } __packed;
  391 
  392 /* BA - ADDBA response */
  393 struct ieee80211_action_ba_addbaresponse {
  394         struct ieee80211_action rs_header;
  395         uint8_t         rs_dialogtoken;
  396         uint16_t        rs_statuscode;
  397         uint16_t        rs_baparamset; 
  398         uint16_t        rs_batimeout;           /* in TUs */
  399 } __packed;
  400 
  401 /* BA - DELBA */
  402 struct ieee80211_action_ba_delba {
  403         struct ieee80211_action dl_header;
  404         uint16_t        dl_baparamset;
  405         uint16_t        dl_reasoncode;
  406 } __packed;
  407 
  408 /* BAR Control */
  409 #define IEEE80211_BAR_TID       0xf000          /* TID */
  410 #define IEEE80211_BAR_TID_S     12
  411 #define IEEE80211_BAR_COMP      0x0004          /* Compressed Bitmap */
  412 #define IEEE80211_BAR_MTID      0x0002          /* Multi-TID */
  413 #define IEEE80211_BAR_NOACK     0x0001          /* No-Ack policy */
  414 
  415 /* BAR Starting Sequence Control */
  416 #define IEEE80211_BAR_SEQ_START 0xfff0          /* starting seqnum */
  417 #define IEEE80211_BAR_SEQ_START_S       4
  418 
  419 struct ieee80211_ba_request {
  420         uint16_t        rq_barctl;
  421         uint16_t        rq_barseqctl;
  422 } __packed;
  423 
  424 /*
  425  * Control frames.
  426  */
  427 struct ieee80211_frame_min {
  428         uint8_t         i_fc[2];
  429         uint8_t         i_dur[2];
  430         uint8_t         i_addr1[IEEE80211_ADDR_LEN];
  431         uint8_t         i_addr2[IEEE80211_ADDR_LEN];
  432         /* FCS */
  433 } __packed;
  434 
  435 struct ieee80211_frame_rts {
  436         uint8_t         i_fc[2];
  437         uint8_t         i_dur[2];
  438         uint8_t         i_ra[IEEE80211_ADDR_LEN];
  439         uint8_t         i_ta[IEEE80211_ADDR_LEN];
  440         /* FCS */
  441 } __packed;
  442 
  443 struct ieee80211_frame_cts {
  444         uint8_t         i_fc[2];
  445         uint8_t         i_dur[2];
  446         uint8_t         i_ra[IEEE80211_ADDR_LEN];
  447         /* FCS */
  448 } __packed;
  449 
  450 struct ieee80211_frame_ack {
  451         uint8_t         i_fc[2];
  452         uint8_t         i_dur[2];
  453         uint8_t         i_ra[IEEE80211_ADDR_LEN];
  454         /* FCS */
  455 } __packed;
  456 
  457 struct ieee80211_frame_pspoll {
  458         uint8_t         i_fc[2];
  459         uint8_t         i_aid[2];
  460         uint8_t         i_bssid[IEEE80211_ADDR_LEN];
  461         uint8_t         i_ta[IEEE80211_ADDR_LEN];
  462         /* FCS */
  463 } __packed;
  464 
  465 struct ieee80211_frame_cfend {          /* NB: also CF-End+CF-Ack */
  466         uint8_t         i_fc[2];
  467         uint8_t         i_dur[2];       /* should be zero */
  468         uint8_t         i_ra[IEEE80211_ADDR_LEN];
  469         uint8_t         i_bssid[IEEE80211_ADDR_LEN];
  470         /* FCS */
  471 } __packed;
  472 
  473 struct ieee80211_frame_bar {
  474         uint8_t         i_fc[2];
  475         uint8_t         i_dur[2];
  476         uint8_t         i_ra[IEEE80211_ADDR_LEN];
  477         uint8_t         i_ta[IEEE80211_ADDR_LEN];
  478         uint16_t        i_ctl;
  479         uint16_t        i_seq;
  480         /* FCS */
  481 } __packed;
  482 
  483 /*
  484  * BEACON management packets
  485  *
  486  *      octet timestamp[8]
  487  *      octet beacon interval[2]
  488  *      octet capability information[2]
  489  *      information element
  490  *              octet elemid
  491  *              octet length
  492  *              octet information[length]
  493  */
  494 
  495 #define IEEE80211_BEACON_INTERVAL(beacon) \
  496         ((beacon)[8] | ((beacon)[9] << 8))
  497 #define IEEE80211_BEACON_CAPABILITY(beacon) \
  498         ((beacon)[10] | ((beacon)[11] << 8))
  499 
  500 #define IEEE80211_CAPINFO_ESS                   0x0001
  501 #define IEEE80211_CAPINFO_IBSS                  0x0002
  502 #define IEEE80211_CAPINFO_CF_POLLABLE           0x0004
  503 #define IEEE80211_CAPINFO_CF_POLLREQ            0x0008
  504 #define IEEE80211_CAPINFO_PRIVACY               0x0010
  505 #define IEEE80211_CAPINFO_SHORT_PREAMBLE        0x0020
  506 #define IEEE80211_CAPINFO_PBCC                  0x0040
  507 #define IEEE80211_CAPINFO_CHNL_AGILITY          0x0080
  508 #define IEEE80211_CAPINFO_SPECTRUM_MGMT         0x0100
  509 /* bit 9 is reserved */
  510 #define IEEE80211_CAPINFO_SHORT_SLOTTIME        0x0400
  511 #define IEEE80211_CAPINFO_RSN                   0x0800
  512 /* bit 12 is reserved */
  513 #define IEEE80211_CAPINFO_DSSSOFDM              0x2000
  514 /* bits 14-15 are reserved */
  515 
  516 #define IEEE80211_CAPINFO_BITS \
  517         "\2\1ESS\2IBSS\3CF_POLLABLE\4CF_POLLREQ\5PRIVACY\6SHORT_PREAMBLE" \
  518         "\7PBCC\10CHNL_AGILITY\11SPECTRUM_MGMT\13SHORT_SLOTTIME\14RSN" \
  519         "\16DSSOFDM"
  520 
  521 /*
  522  * 802.11i/WPA information element (maximally sized).
  523  */
  524 struct ieee80211_ie_wpa {
  525         uint8_t         wpa_id;         /* IEEE80211_ELEMID_VENDOR */
  526         uint8_t         wpa_len;        /* length in bytes */
  527         uint8_t         wpa_oui[3];     /* 0x00, 0x50, 0xf2 */
  528         uint8_t         wpa_type;       /* OUI type */
  529         uint16_t        wpa_version;    /* spec revision */
  530         uint32_t        wpa_mcipher[1]; /* multicast/group key cipher */
  531         uint16_t        wpa_uciphercnt; /* # pairwise key ciphers */
  532         uint32_t        wpa_uciphers[8];/* ciphers */
  533         uint16_t        wpa_authselcnt; /* authentication selector cnt*/
  534         uint32_t        wpa_authsels[8];/* selectors */
  535         uint16_t        wpa_caps;       /* 802.11i capabilities */
  536         uint16_t        wpa_pmkidcnt;   /* 802.11i pmkid count */
  537         uint16_t        wpa_pmkids[8];  /* 802.11i pmkids */
  538 } __packed;
  539 
  540 /*
  541  * 802.11n HT Capability IE
  542  * NB: these reflect D1.10 
  543  */
  544 struct ieee80211_ie_htcap {
  545         uint8_t         hc_id;                  /* element ID */
  546         uint8_t         hc_len;                 /* length in bytes */
  547         uint16_t        hc_cap;                 /* HT caps (see below) */
  548         uint8_t         hc_param;               /* HT params (see below) */
  549         uint8_t         hc_mcsset[16];          /* supported MCS set */
  550         uint16_t        hc_extcap;              /* extended HT capabilities */
  551         uint32_t        hc_txbf;                /* txbf capabilities */
  552         uint8_t         hc_antenna;             /* antenna capabilities */
  553 } __packed;
  554 
  555 /* HT capability flags (ht_cap) */
  556 #define IEEE80211_HTCAP_LDPC            0x0001  /* LDPC supported */
  557 #define IEEE80211_HTCAP_CHWIDTH40       0x0002  /* 20/40 supported */
  558 #define IEEE80211_HTCAP_SMPS            0x000c  /* SM Power Save mode */
  559 #define IEEE80211_HTCAP_SMPS_OFF        0x000c  /* disabled */
  560 #define IEEE80211_HTCAP_SMPS_DYNAMIC    0x0004  /* send RTS first */
  561 /* NB: SMPS value 2 is reserved */
  562 #define IEEE80211_HTCAP_SMPS_ENA        0x0000  /* enabled (static mode) */
  563 #define IEEE80211_HTCAP_GREENFIELD      0x0010  /* Greenfield supported */
  564 #define IEEE80211_HTCAP_SHORTGI20       0x0020  /* Short GI in 20MHz */
  565 #define IEEE80211_HTCAP_SHORTGI40       0x0040  /* Short GI in 40MHz */
  566 #define IEEE80211_HTCAP_TXSTBC          0x0080  /* STBC tx ok */
  567 #define IEEE80211_HTCAP_RXSTBC          0x0300  /* STBC rx support */
  568 #define IEEE80211_HTCAP_RXSTBC_S        8
  569 #define IEEE80211_HTCAP_RXSTBC_1STREAM  0x0100  /* 1 spatial stream */
  570 #define IEEE80211_HTCAP_RXSTBC_2STREAM  0x0200  /* 1-2 spatial streams*/
  571 #define IEEE80211_HTCAP_RXSTBC_3STREAM  0x0300  /* 1-3 spatial streams*/
  572 #define IEEE80211_HTCAP_DELBA           0x0400  /* HT DELBA supported */
  573 #define IEEE80211_HTCAP_MAXAMSDU        0x0800  /* max A-MSDU length */
  574 #define IEEE80211_HTCAP_MAXAMSDU_7935   0x0800  /* 7935 octets */
  575 #define IEEE80211_HTCAP_MAXAMSDU_3839   0x0000  /* 3839 octets */
  576 #define IEEE80211_HTCAP_DSSSCCK40       0x1000  /* DSSS/CCK in 40MHz */
  577 #define IEEE80211_HTCAP_PSMP            0x2000  /* PSMP supported */
  578 #define IEEE80211_HTCAP_40INTOLERANT    0x4000  /* 40MHz intolerant */
  579 #define IEEE80211_HTCAP_LSIGTXOPPROT    0x8000  /* L-SIG TXOP prot */
  580 
  581 #define IEEE80211_HTCAP_BITS \
  582         "\2\1LDPC\2CHWIDTH40\5GREENFIELD\6SHORTGI20\7SHORTGI40\10TXSTBC" \
  583         "\13DELBA\14AMSDU(7935)\15DSSSCCK40\16PSMP\1740INTOLERANT" \
  584         "\20LSIGTXOPPROT"
  585 
  586 /* HT parameters (hc_param) */
  587 #define IEEE80211_HTCAP_MAXRXAMPDU      0x03    /* max rx A-MPDU factor */
  588 #define IEEE80211_HTCAP_MAXRXAMPDU_S    0
  589 #define IEEE80211_HTCAP_MAXRXAMPDU_8K   0
  590 #define IEEE80211_HTCAP_MAXRXAMPDU_16K  1
  591 #define IEEE80211_HTCAP_MAXRXAMPDU_32K  2
  592 #define IEEE80211_HTCAP_MAXRXAMPDU_64K  3
  593 #define IEEE80211_HTCAP_MPDUDENSITY     0x1c    /* min MPDU start spacing */
  594 #define IEEE80211_HTCAP_MPDUDENSITY_S   2
  595 #define IEEE80211_HTCAP_MPDUDENSITY_NA  0       /* no time restriction */
  596 #define IEEE80211_HTCAP_MPDUDENSITY_025 1       /* 1/4 us */
  597 #define IEEE80211_HTCAP_MPDUDENSITY_05  2       /* 1/2 us */
  598 #define IEEE80211_HTCAP_MPDUDENSITY_1   3       /* 1 us */
  599 #define IEEE80211_HTCAP_MPDUDENSITY_2   4       /* 2 us */
  600 #define IEEE80211_HTCAP_MPDUDENSITY_4   5       /* 4 us */
  601 #define IEEE80211_HTCAP_MPDUDENSITY_8   6       /* 8 us */
  602 #define IEEE80211_HTCAP_MPDUDENSITY_16  7       /* 16 us */
  603 
  604 /* HT extended capabilities (hc_extcap) */
  605 #define IEEE80211_HTCAP_PCO             0x0001  /* PCO capable */
  606 #define IEEE80211_HTCAP_PCOTRANS        0x0006  /* PCO transition time */
  607 #define IEEE80211_HTCAP_PCOTRANS_S      1
  608 #define IEEE80211_HTCAP_PCOTRANS_04     0x0002  /* 400 us */
  609 #define IEEE80211_HTCAP_PCOTRANS_15     0x0004  /* 1.5 ms */
  610 #define IEEE80211_HTCAP_PCOTRANS_5      0x0006  /* 5 ms */
  611 /* bits 3-7 reserved */
  612 #define IEEE80211_HTCAP_MCSFBACK        0x0300  /* MCS feedback */
  613 #define IEEE80211_HTCAP_MCSFBACK_S      8
  614 #define IEEE80211_HTCAP_MCSFBACK_NONE   0x0000  /* nothing provided */
  615 #define IEEE80211_HTCAP_MCSFBACK_UNSOL  0x0200  /* unsolicited feedback */
  616 #define IEEE80211_HTCAP_MCSFBACK_MRQ    0x0300  /* " "+respond to MRQ */
  617 #define IEEE80211_HTCAP_HTC             0x0400  /* +HTC support */
  618 #define IEEE80211_HTCAP_RDR             0x0800  /* reverse direction responder*/
  619 /* bits 12-15 reserved */
  620 
  621 /*
  622  * 802.11n HT Information IE
  623  */
  624 struct ieee80211_ie_htinfo {
  625         uint8_t         hi_id;                  /* element ID */
  626         uint8_t         hi_len;                 /* length in bytes */
  627         uint8_t         hi_ctrlchannel;         /* primary channel */
  628         uint8_t         hi_byte1;               /* ht ie byte 1 */
  629         uint8_t         hi_byte2;               /* ht ie byte 2 */
  630         uint8_t         hi_byte3;               /* ht ie byte 3 */
  631         uint16_t        hi_byte45;              /* ht ie bytes 4+5 */
  632         uint8_t         hi_basicmcsset[16];     /* basic MCS set */
  633 } __packed;
  634 
  635 /* byte1 */
  636 #define IEEE80211_HTINFO_2NDCHAN        0x03    /* secondary/ext chan offset */
  637 #define IEEE80211_HTINFO_2NDCHAN_S      0
  638 #define IEEE80211_HTINFO_2NDCHAN_NONE   0x00    /* no secondary/ext channel */
  639 #define IEEE80211_HTINFO_2NDCHAN_ABOVE  0x01    /* above private channel */
  640 /* NB: 2 is reserved */
  641 #define IEEE80211_HTINFO_2NDCHAN_BELOW  0x03    /* below primary channel */ 
  642 #define IEEE80211_HTINFO_TXWIDTH        0x04    /* tx channel width */
  643 #define IEEE80211_HTINFO_TXWIDTH_20     0x00    /* 20MHz width */
  644 #define IEEE80211_HTINFO_TXWIDTH_2040   0x04    /* any supported width */
  645 #define IEEE80211_HTINFO_RIFSMODE       0x08    /* Reduced IFS (RIFS) use */
  646 #define IEEE80211_HTINFO_RIFSMODE_PROH  0x00    /* RIFS use prohibited */
  647 #define IEEE80211_HTINFO_RIFSMODE_PERM  0x08    /* RIFS use permitted */
  648 #define IEEE80211_HTINFO_PMSPONLY       0x10    /* PSMP required to associate */
  649 #define IEEE80211_HTINFO_SIGRAN         0xe0    /* shortest Service Interval */
  650 #define IEEE80211_HTINFO_SIGRAN_S       5
  651 #define IEEE80211_HTINFO_SIGRAN_5       0x00    /* 5 ms */
  652 /* XXX add rest */
  653 
  654 /* bytes 2+3 */
  655 #define IEEE80211_HTINFO_OPMODE         0x03    /* operating mode */
  656 #define IEEE80211_HTINFO_OPMODE_S       0
  657 #define IEEE80211_HTINFO_OPMODE_PURE    0x00    /* no protection */
  658 #define IEEE80211_HTINFO_OPMODE_PROTOPT 0x01    /* protection optional */
  659 #define IEEE80211_HTINFO_OPMODE_HT20PR  0x02    /* protection for HT20 sta's */
  660 #define IEEE80211_HTINFO_OPMODE_MIXED   0x03    /* protection for legacy sta's*/
  661 #define IEEE80211_HTINFO_NONGF_PRESENT  0x04    /* non-GF sta's present */
  662 #define IEEE80211_HTINFO_TXBL           0x08    /* transmit burst limit */
  663 #define IEEE80211_HTINFO_NONHT_PRESENT  0x10    /* non-HT sta's present */
  664 /* bits 5-15 reserved */
  665 
  666 /* bytes 4+5 */
  667 #define IEEE80211_HTINFO_2NDARYBEACON   0x01
  668 #define IEEE80211_HTINFO_LSIGTXOPPROT   0x02
  669 #define IEEE80211_HTINFO_PCO_ACTIVE     0x04
  670 #define IEEE80211_HTINFO_40MHZPHASE     0x08
  671 
  672 /* byte5 */
  673 #define IEEE80211_HTINFO_BASIC_STBCMCS  0x7f
  674 #define IEEE80211_HTINFO_BASIC_STBCMCS_S 0
  675 #define IEEE80211_HTINFO_DUALPROTECTED  0x80
  676 
  677 /*
  678  * Management information element payloads.
  679  */
  680 
  681 enum {
  682         IEEE80211_ELEMID_SSID           = 0,
  683         IEEE80211_ELEMID_RATES          = 1,
  684         IEEE80211_ELEMID_FHPARMS        = 2,
  685         IEEE80211_ELEMID_DSPARMS        = 3,
  686         IEEE80211_ELEMID_CFPARMS        = 4,
  687         IEEE80211_ELEMID_TIM            = 5,
  688         IEEE80211_ELEMID_IBSSPARMS      = 6,
  689         IEEE80211_ELEMID_COUNTRY        = 7,
  690         IEEE80211_ELEMID_CHALLENGE      = 16,
  691         /* 17-31 reserved for challenge text extension */
  692         IEEE80211_ELEMID_PWRCNSTR       = 32,
  693         IEEE80211_ELEMID_PWRCAP         = 33,
  694         IEEE80211_ELEMID_TPCREQ         = 34,
  695         IEEE80211_ELEMID_TPCREP         = 35,
  696         IEEE80211_ELEMID_SUPPCHAN       = 36,
  697         IEEE80211_ELEMID_CSA            = 37,
  698         IEEE80211_ELEMID_MEASREQ        = 38,
  699         IEEE80211_ELEMID_MEASREP        = 39,
  700         IEEE80211_ELEMID_QUIET          = 40,
  701         IEEE80211_ELEMID_IBSSDFS        = 41,
  702         IEEE80211_ELEMID_ERP            = 42,
  703         IEEE80211_ELEMID_HTCAP          = 45,
  704         IEEE80211_ELEMID_QOS            = 46,
  705         IEEE80211_ELEMID_RSN            = 48,
  706         IEEE80211_ELEMID_XRATES         = 50,
  707         IEEE80211_ELEMID_HTINFO         = 61,
  708         IEEE80211_ELEMID_TPC            = 150,
  709         IEEE80211_ELEMID_CCKM           = 156,
  710         IEEE80211_ELEMID_VENDOR         = 221,  /* vendor private */
  711 
  712         /*
  713          * 802.11s IEs
  714          * NB: On vanilla Linux still IEEE80211_ELEMID_MESHPEER = 55,
  715          * but they defined a new with id 117 called PEER_MGMT.
  716          * NB: complies with open80211
  717          */
  718         IEEE80211_ELEMID_MESHCONF       = 113,
  719         IEEE80211_ELEMID_MESHID         = 114,
  720         IEEE80211_ELEMID_MESHLINK       = 115,
  721         IEEE80211_ELEMID_MESHCNGST      = 116,
  722         IEEE80211_ELEMID_MESHPEER       = 117,
  723         IEEE80211_ELEMID_MESHCSA        = 118,
  724         IEEE80211_ELEMID_MESHTIM        = 39, /* XXX: remove */
  725         IEEE80211_ELEMID_MESHAWAKEW     = 119,
  726         IEEE80211_ELEMID_MESHBEACONT    = 120,
  727         /* 121-124 MMCAOP not implemented yet */
  728         IEEE80211_ELEMID_MESHPANN       = 125, /* XXX: is GANN now, not used */
  729         IEEE80211_ELEMID_MESHRANN       = 126,
  730         /* 127 Extended Capabilities */
  731         /* 128-129 reserved */
  732         IEEE80211_ELEMID_MESHPREQ       = 130,
  733         IEEE80211_ELEMID_MESHPREP       = 131,
  734         IEEE80211_ELEMID_MESHPERR       = 132,
  735         /* 133-136 reserved */
  736         IEEE80211_ELEMID_MESHPXU        = 137,
  737         IEEE80211_ELEMID_MESHPXUC       = 138,
  738         IEEE80211_ELEMID_MESHAH         = 60, /* XXX: remove */
  739 };
  740 
  741 struct ieee80211_tim_ie {
  742         uint8_t         tim_ie;                 /* IEEE80211_ELEMID_TIM */
  743         uint8_t         tim_len;
  744         uint8_t         tim_count;              /* DTIM count */
  745         uint8_t         tim_period;             /* DTIM period */
  746         uint8_t         tim_bitctl;             /* bitmap control */
  747         uint8_t         tim_bitmap[1];          /* variable-length bitmap */
  748 } __packed;
  749 
  750 struct ieee80211_country_ie {
  751         uint8_t         ie;                     /* IEEE80211_ELEMID_COUNTRY */
  752         uint8_t         len;
  753         uint8_t         cc[3];                  /* ISO CC+(I)ndoor/(O)utdoor */
  754         struct {
  755                 uint8_t schan;                  /* starting channel */
  756                 uint8_t nchan;                  /* number channels */
  757                 uint8_t maxtxpwr;               /* tx power cap */
  758         } __packed band[1];                     /* sub bands (NB: var size) */
  759 } __packed;
  760 
  761 #define IEEE80211_COUNTRY_MAX_BANDS     84      /* max possible bands */
  762 #define IEEE80211_COUNTRY_MAX_SIZE \
  763         (sizeof(struct ieee80211_country_ie) + 3*(IEEE80211_COUNTRY_MAX_BANDS-1))
  764 
  765 /*
  766  * 802.11h Channel Switch Announcement (CSA).
  767  */
  768 struct ieee80211_csa_ie {
  769         uint8_t         csa_ie;         /* IEEE80211_ELEMID_CHANSWITCHANN */
  770         uint8_t         csa_len;
  771         uint8_t         csa_mode;               /* Channel Switch Mode */
  772         uint8_t         csa_newchan;            /* New Channel Number */
  773         uint8_t         csa_count;              /* Channel Switch Count */
  774 } __packed;
  775 
  776 /*
  777  * Note the min acceptable CSA count is used to guard against
  778  * malicious CSA injection in station mode.  Defining this value
  779  * as other than 0 violates the 11h spec.
  780  */
  781 #define IEEE80211_CSA_COUNT_MIN 2
  782 #define IEEE80211_CSA_COUNT_MAX 255
  783 
  784 /* rate set entries are in .5 Mb/s units, and potentially marked as basic */
  785 #define IEEE80211_RATE_BASIC            0x80
  786 #define IEEE80211_RATE_VAL              0x7f
  787 
  788 /* EPR information element flags */
  789 #define IEEE80211_ERP_NON_ERP_PRESENT   0x01
  790 #define IEEE80211_ERP_USE_PROTECTION    0x02
  791 #define IEEE80211_ERP_LONG_PREAMBLE     0x04
  792 
  793 #define IEEE80211_ERP_BITS \
  794         "\2\1NON_ERP_PRESENT\2USE_PROTECTION\3LONG_PREAMBLE"
  795 
  796 #define ATH_OUI                 0x7f0300        /* Atheros OUI */
  797 #define ATH_OUI_TYPE            0x01            /* Atheros protocol ie */
  798 
  799 /* NB: Atheros allocated the OUI for this purpose ~2005 but beware ... */
  800 #define TDMA_OUI                ATH_OUI
  801 #define TDMA_OUI_TYPE           0x02            /* TDMA protocol ie */
  802 
  803 #define BCM_OUI                 0x4c9000        /* Broadcom OUI */
  804 #define BCM_OUI_HTCAP           51              /* pre-draft HTCAP ie */
  805 #define BCM_OUI_HTINFO          52              /* pre-draft HTINFO ie */
  806 
  807 #define WPA_OUI                 0xf25000
  808 #define WPA_OUI_TYPE            0x01
  809 #define WPA_VERSION             1               /* current supported version */
  810 
  811 #define WPA_CSE_NULL            0x00
  812 #define WPA_CSE_WEP40           0x01
  813 #define WPA_CSE_TKIP            0x02
  814 #define WPA_CSE_CCMP            0x04
  815 #define WPA_CSE_WEP104          0x05
  816 
  817 #define WPA_ASE_NONE            0x00
  818 #define WPA_ASE_8021X_UNSPEC    0x01
  819 #define WPA_ASE_8021X_PSK       0x02
  820 
  821 #define WPS_OUI_TYPE            0x04
  822 
  823 #define RSN_OUI                 0xac0f00
  824 #define RSN_VERSION             1               /* current supported version */
  825 
  826 #define RSN_CSE_NULL            0x00
  827 #define RSN_CSE_WEP40           0x01
  828 #define RSN_CSE_TKIP            0x02
  829 #define RSN_CSE_WRAP            0x03
  830 #define RSN_CSE_CCMP            0x04
  831 #define RSN_CSE_WEP104          0x05
  832 
  833 #define RSN_ASE_NONE            0x00
  834 #define RSN_ASE_8021X_UNSPEC    0x01
  835 #define RSN_ASE_8021X_PSK       0x02
  836 
  837 #define RSN_CAP_PREAUTH         0x01
  838 
  839 #define WME_OUI                 0xf25000
  840 #define WME_OUI_TYPE            0x02
  841 #define WME_INFO_OUI_SUBTYPE    0x00
  842 #define WME_PARAM_OUI_SUBTYPE   0x01
  843 #define WME_VERSION             1
  844 
  845 /* WME stream classes */
  846 #define WME_AC_BE       0               /* best effort */
  847 #define WME_AC_BK       1               /* background */
  848 #define WME_AC_VI       2               /* video */
  849 #define WME_AC_VO       3               /* voice */
  850 
  851 /*
  852  * AUTH management packets
  853  *
  854  *      octet algo[2]
  855  *      octet seq[2]
  856  *      octet status[2]
  857  *      octet chal.id
  858  *      octet chal.length
  859  *      octet chal.text[253]            NB: 1-253 bytes
  860  */
  861 
  862 /* challenge length for shared key auth */
  863 #define IEEE80211_CHALLENGE_LEN         128
  864 
  865 #define IEEE80211_AUTH_ALG_OPEN         0x0000
  866 #define IEEE80211_AUTH_ALG_SHARED       0x0001
  867 #define IEEE80211_AUTH_ALG_LEAP         0x0080
  868 
  869 enum {
  870         IEEE80211_AUTH_OPEN_REQUEST             = 1,
  871         IEEE80211_AUTH_OPEN_RESPONSE            = 2,
  872 };
  873 
  874 enum {
  875         IEEE80211_AUTH_SHARED_REQUEST           = 1,
  876         IEEE80211_AUTH_SHARED_CHALLENGE         = 2,
  877         IEEE80211_AUTH_SHARED_RESPONSE          = 3,
  878         IEEE80211_AUTH_SHARED_PASS              = 4,
  879 };
  880 
  881 /*
  882  * Reason and status codes.
  883  *
  884  * Reason codes are used in management frames to indicate why an
  885  * action took place (e.g. on disassociation).  Status codes are
  886  * used in management frames to indicate the result of an operation.
  887  *
  888  * Unlisted codes are reserved
  889  */
  890 
  891 enum {
  892         IEEE80211_REASON_UNSPECIFIED            = 1,
  893         IEEE80211_REASON_AUTH_EXPIRE            = 2,
  894         IEEE80211_REASON_AUTH_LEAVE             = 3,
  895         IEEE80211_REASON_ASSOC_EXPIRE           = 4,
  896         IEEE80211_REASON_ASSOC_TOOMANY          = 5,
  897         IEEE80211_REASON_NOT_AUTHED             = 6,
  898         IEEE80211_REASON_NOT_ASSOCED            = 7,
  899         IEEE80211_REASON_ASSOC_LEAVE            = 8,
  900         IEEE80211_REASON_ASSOC_NOT_AUTHED       = 9,
  901         IEEE80211_REASON_DISASSOC_PWRCAP_BAD    = 10,   /* 11h */
  902         IEEE80211_REASON_DISASSOC_SUPCHAN_BAD   = 11,   /* 11h */
  903         IEEE80211_REASON_IE_INVALID             = 13,   /* 11i */
  904         IEEE80211_REASON_MIC_FAILURE            = 14,   /* 11i */
  905         IEEE80211_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,   /* 11i */
  906         IEEE80211_REASON_GROUP_KEY_UPDATE_TIMEOUT = 16, /* 11i */
  907         IEEE80211_REASON_IE_IN_4WAY_DIFFERS     = 17,   /* 11i */
  908         IEEE80211_REASON_GROUP_CIPHER_INVALID   = 18,   /* 11i */
  909         IEEE80211_REASON_PAIRWISE_CIPHER_INVALID= 19,   /* 11i */
  910         IEEE80211_REASON_AKMP_INVALID           = 20,   /* 11i */
  911         IEEE80211_REASON_UNSUPP_RSN_IE_VERSION  = 21,   /* 11i */
  912         IEEE80211_REASON_INVALID_RSN_IE_CAP     = 22,   /* 11i */
  913         IEEE80211_REASON_802_1X_AUTH_FAILED     = 23,   /* 11i */
  914         IEEE80211_REASON_CIPHER_SUITE_REJECTED  = 24,   /* 11i */
  915         IEEE80211_REASON_UNSPECIFIED_QOS        = 32,   /* 11e */
  916         IEEE80211_REASON_INSUFFICIENT_BW        = 33,   /* 11e */
  917         IEEE80211_REASON_TOOMANY_FRAMES         = 34,   /* 11e */
  918         IEEE80211_REASON_OUTSIDE_TXOP           = 35,   /* 11e */
  919         IEEE80211_REASON_LEAVING_QBSS           = 36,   /* 11e */
  920         IEEE80211_REASON_BAD_MECHANISM          = 37,   /* 11e */
  921         IEEE80211_REASON_SETUP_NEEDED           = 38,   /* 11e */
  922         IEEE80211_REASON_TIMEOUT                = 39,   /* 11e */
  923 
  924         /* values not yet allocated by ANA */
  925         IEEE80211_REASON_PEER_LINK_CANCELED     = 2,    /* 11s */
  926         IEEE80211_REASON_MESH_MAX_PEERS         = 3,    /* 11s */
  927         IEEE80211_REASON_MESH_CPVIOLATION       = 4,    /* 11s */
  928         IEEE80211_REASON_MESH_CLOSE_RCVD        = 5,    /* 11s */
  929         IEEE80211_REASON_MESH_MAX_RETRIES       = 6,    /* 11s */
  930         IEEE80211_REASON_MESH_CONFIRM_TIMEOUT   = 7,    /* 11s */
  931         IEEE80211_REASON_MESH_INVALID_GTK       = 8,    /* 11s */
  932         IEEE80211_REASON_MESH_INCONS_PARAMS     = 9,    /* 11s */
  933         IEEE80211_REASON_MESH_INVALID_SECURITY  = 10,   /* 11s */
  934         IEEE80211_REASON_MESH_PERR_UNSPEC       = 11,   /* 11s */
  935         IEEE80211_REASON_MESH_PERR_NO_FI        = 12,   /* 11s */
  936         IEEE80211_REASON_MESH_PERR_DEST_UNREACH = 13,   /* 11s */
  937 
  938         IEEE80211_STATUS_SUCCESS                = 0,
  939         IEEE80211_STATUS_UNSPECIFIED            = 1,
  940         IEEE80211_STATUS_CAPINFO                = 10,
  941         IEEE80211_STATUS_NOT_ASSOCED            = 11,
  942         IEEE80211_STATUS_OTHER                  = 12,
  943         IEEE80211_STATUS_ALG                    = 13,
  944         IEEE80211_STATUS_SEQUENCE               = 14,
  945         IEEE80211_STATUS_CHALLENGE              = 15,
  946         IEEE80211_STATUS_TIMEOUT                = 16,
  947         IEEE80211_STATUS_TOOMANY                = 17,
  948         IEEE80211_STATUS_BASIC_RATE             = 18,
  949         IEEE80211_STATUS_SP_REQUIRED            = 19,   /* 11b */
  950         IEEE80211_STATUS_PBCC_REQUIRED          = 20,   /* 11b */
  951         IEEE80211_STATUS_CA_REQUIRED            = 21,   /* 11b */
  952         IEEE80211_STATUS_SPECMGMT_REQUIRED      = 22,   /* 11h */
  953         IEEE80211_STATUS_PWRCAP_REQUIRED        = 23,   /* 11h */
  954         IEEE80211_STATUS_SUPCHAN_REQUIRED       = 24,   /* 11h */
  955         IEEE80211_STATUS_SHORTSLOT_REQUIRED     = 25,   /* 11g */
  956         IEEE80211_STATUS_DSSSOFDM_REQUIRED      = 26,   /* 11g */
  957         IEEE80211_STATUS_MISSING_HT_CAPS        = 27,   /* 11n D3.0 */
  958         IEEE80211_STATUS_INVALID_IE             = 40,   /* 11i */
  959         IEEE80211_STATUS_GROUP_CIPHER_INVALID   = 41,   /* 11i */
  960         IEEE80211_STATUS_PAIRWISE_CIPHER_INVALID = 42,  /* 11i */
  961         IEEE80211_STATUS_AKMP_INVALID           = 43,   /* 11i */
  962         IEEE80211_STATUS_UNSUPP_RSN_IE_VERSION  = 44,   /* 11i */
  963         IEEE80211_STATUS_INVALID_RSN_IE_CAP     = 45,   /* 11i */
  964         IEEE80211_STATUS_CIPHER_SUITE_REJECTED  = 46,   /* 11i */
  965 };
  966 
  967 #define IEEE80211_WEP_KEYLEN            5       /* 40bit */
  968 #define IEEE80211_WEP_IVLEN             3       /* 24bit */
  969 #define IEEE80211_WEP_KIDLEN            1       /* 1 octet */
  970 #define IEEE80211_WEP_CRCLEN            4       /* CRC-32 */
  971 #define IEEE80211_WEP_TOTLEN            (IEEE80211_WEP_IVLEN + \
  972                                          IEEE80211_WEP_KIDLEN + \
  973                                          IEEE80211_WEP_CRCLEN)
  974 #define IEEE80211_WEP_NKID              4       /* number of key ids */
  975 
  976 /*
  977  * 802.11i defines an extended IV for use with non-WEP ciphers.
  978  * When the EXTIV bit is set in the key id byte an additional
  979  * 4 bytes immediately follow the IV for TKIP.  For CCMP the
  980  * EXTIV bit is likewise set but the 8 bytes represent the
  981  * CCMP header rather than IV+extended-IV.
  982  */
  983 #define IEEE80211_WEP_EXTIV             0x20
  984 #define IEEE80211_WEP_EXTIVLEN          4       /* extended IV length */
  985 #define IEEE80211_WEP_MICLEN            8       /* trailing MIC */
  986 
  987 #define IEEE80211_CRC_LEN               4
  988 
  989 /*
  990  * Maximum acceptable MTU is:
  991  *      IEEE80211_MAX_LEN - WEP overhead - CRC -
  992  *              QoS overhead - RSN/WPA overhead
  993  * Min is arbitrarily chosen > IEEE80211_MIN_LEN.  The default
  994  * mtu is Ethernet-compatible; it's set by ether_ifattach.
  995  */
  996 #define IEEE80211_MTU_MAX               2290
  997 #define IEEE80211_MTU_MIN               32
  998 
  999 #define IEEE80211_MAX_LEN               (2300 + IEEE80211_CRC_LEN + \
 1000     (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN))
 1001 #define IEEE80211_ACK_LEN \
 1002         (sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN)
 1003 #define IEEE80211_MIN_LEN \
 1004         (sizeof(struct ieee80211_frame_min) + IEEE80211_CRC_LEN)
 1005 
 1006 /*
 1007  * The 802.11 spec says at most 2007 stations may be
 1008  * associated at once.  For most AP's this is way more
 1009  * than is feasible so we use a default of IEEE80211_AID_DEF.
 1010  * This number may be overridden by the driver and/or by
 1011  * user configuration but may not be less than IEEE80211_AID_MIN
 1012  * (see _ieee80211.h for implementation-specific settings).
 1013  */
 1014 #define IEEE80211_AID_MAX               2007
 1015 
 1016 #define IEEE80211_AID(b)        ((b) &~ 0xc000)
 1017 
 1018 /* 
 1019  * RTS frame length parameters.  The default is specified in
 1020  * the 802.11 spec as 512; we treat it as implementation-dependent
 1021  * so it's defined in ieee80211_var.h.  The max may be wrong
 1022  * for jumbo frames.
 1023  */
 1024 #define IEEE80211_RTS_MIN               1
 1025 #define IEEE80211_RTS_MAX               2346
 1026 
 1027 /* 
 1028  * TX fragmentation parameters.  As above for RTS, we treat
 1029  * default as implementation-dependent so define it elsewhere.
 1030  */
 1031 #define IEEE80211_FRAG_MIN              256
 1032 #define IEEE80211_FRAG_MAX              2346
 1033 
 1034 /*
 1035  * Beacon interval (TU's).  Min+max come from WiFi requirements.
 1036  * As above, we treat default as implementation-dependent so
 1037  * define it elsewhere.
 1038  */
 1039 #define IEEE80211_BINTVAL_MAX   1000    /* max beacon interval (TU's) */
 1040 #define IEEE80211_BINTVAL_MIN   25      /* min beacon interval (TU's) */
 1041 
 1042 /*
 1043  * DTIM period (beacons).  Min+max are not really defined
 1044  * by the protocol but we want them publicly visible so
 1045  * define them here.
 1046  */
 1047 #define IEEE80211_DTIM_MAX      15      /* max DTIM period */
 1048 #define IEEE80211_DTIM_MIN      1       /* min DTIM period */
 1049 
 1050 /*
 1051  * Beacon miss threshold (beacons).  As for DTIM, we define
 1052  * them here to be publicly visible.  Note the max may be
 1053  * clamped depending on device capabilities.
 1054  */
 1055 #define IEEE80211_HWBMISS_MIN   1
 1056 #define IEEE80211_HWBMISS_MAX   255
 1057 
 1058 /*
 1059  * 802.11 frame duration definitions.
 1060  */
 1061 
 1062 struct ieee80211_duration {
 1063         uint16_t        d_rts_dur;
 1064         uint16_t        d_data_dur;
 1065         uint16_t        d_plcp_len;
 1066         uint8_t         d_residue;      /* unused octets in time slot */
 1067 };
 1068 
 1069 /* One Time Unit (TU) is 1Kus = 1024 microseconds. */
 1070 #define IEEE80211_DUR_TU                1024
 1071 
 1072 /* IEEE 802.11b durations for DSSS PHY in microseconds */
 1073 #define IEEE80211_DUR_DS_LONG_PREAMBLE  144
 1074 #define IEEE80211_DUR_DS_SHORT_PREAMBLE 72
 1075 
 1076 #define IEEE80211_DUR_DS_SLOW_PLCPHDR   48
 1077 #define IEEE80211_DUR_DS_FAST_PLCPHDR   24
 1078 #define IEEE80211_DUR_DS_SLOW_ACK       112
 1079 #define IEEE80211_DUR_DS_FAST_ACK       56
 1080 #define IEEE80211_DUR_DS_SLOW_CTS       112
 1081 #define IEEE80211_DUR_DS_FAST_CTS       56
 1082 
 1083 #define IEEE80211_DUR_DS_SLOT           20
 1084 #define IEEE80211_DUR_DS_SIFS           10
 1085 #define IEEE80211_DUR_DS_PIFS   (IEEE80211_DUR_DS_SIFS + IEEE80211_DUR_DS_SLOT)
 1086 #define IEEE80211_DUR_DS_DIFS   (IEEE80211_DUR_DS_SIFS + \
 1087                                  2 * IEEE80211_DUR_DS_SLOT)
 1088 #define IEEE80211_DUR_DS_EIFS   (IEEE80211_DUR_DS_SIFS + \
 1089                                  IEEE80211_DUR_DS_SLOW_ACK + \
 1090                                  IEEE80211_DUR_DS_LONG_PREAMBLE + \
 1091                                  IEEE80211_DUR_DS_SLOW_PLCPHDR + \
 1092                                  IEEE80211_DUR_DIFS)
 1093 
 1094 #endif /* _NET80211_IEEE80211_H_ */

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