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


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FreeBSD/Linux Kernel Cross Reference
sys/net80211/_ieee80211.h

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    1 /*-
    2  * Copyright (c) 2001 Atsushi Onoe
    3  * Copyright (c) 2002-2008 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: releng/11.0/sys/net80211/_ieee80211.h 298899 2016-05-01 20:57:10Z avos $
   27  */
   28 #ifndef _NET80211__IEEE80211_H_
   29 #define _NET80211__IEEE80211_H_
   30 
   31 /*
   32  * 802.11 implementation definitions.
   33  *
   34  * NB: this file is used by applications.
   35  */
   36 
   37 /*
   38  * PHY type; mostly used to identify FH phys.
   39  */
   40 enum ieee80211_phytype {
   41         IEEE80211_T_DS,                 /* direct sequence spread spectrum */
   42         IEEE80211_T_FH,                 /* frequency hopping */
   43         IEEE80211_T_OFDM,               /* frequency division multiplexing */
   44         IEEE80211_T_TURBO,              /* high rate OFDM, aka turbo mode */
   45         IEEE80211_T_HT,                 /* high throughput */
   46         IEEE80211_T_OFDM_HALF,          /* 1/2 rate OFDM */
   47         IEEE80211_T_OFDM_QUARTER,       /* 1/4 rate OFDM */
   48 };
   49 #define IEEE80211_T_CCK IEEE80211_T_DS  /* more common nomenclature */
   50 
   51 /*
   52  * PHY mode; this is not really a mode as multi-mode devices
   53  * have multiple PHY's.  Mode is mostly used as a shorthand
   54  * for constraining which channels to consider in setting up
   55  * operation.  Modes used to be used more extensively when
   56  * channels were identified as IEEE channel numbers.
   57  */
   58 enum ieee80211_phymode {
   59         IEEE80211_MODE_AUTO     = 0,    /* autoselect */
   60         IEEE80211_MODE_11A      = 1,    /* 5GHz, OFDM */
   61         IEEE80211_MODE_11B      = 2,    /* 2GHz, CCK */
   62         IEEE80211_MODE_11G      = 3,    /* 2GHz, OFDM */
   63         IEEE80211_MODE_FH       = 4,    /* 2GHz, GFSK */
   64         IEEE80211_MODE_TURBO_A  = 5,    /* 5GHz, OFDM, 2x clock */
   65         IEEE80211_MODE_TURBO_G  = 6,    /* 2GHz, OFDM, 2x clock */
   66         IEEE80211_MODE_STURBO_A = 7,    /* 5GHz, OFDM, 2x clock, static */
   67         IEEE80211_MODE_11NA     = 8,    /* 5GHz, w/ HT */
   68         IEEE80211_MODE_11NG     = 9,    /* 2GHz, w/ HT */
   69         IEEE80211_MODE_HALF     = 10,   /* OFDM, 1/2x clock */
   70         IEEE80211_MODE_QUARTER  = 11,   /* OFDM, 1/4x clock */
   71 };
   72 #define IEEE80211_MODE_MAX      (IEEE80211_MODE_QUARTER+1)
   73 #define IEEE80211_MODE_BYTES    howmany(IEEE80211_MODE_MAX, NBBY)
   74 
   75 /*
   76  * Operating mode.  Devices do not necessarily support
   77  * all modes; they indicate which are supported in their
   78  * capabilities.
   79  */
   80 enum ieee80211_opmode {
   81         IEEE80211_M_IBSS        = 0,    /* IBSS (adhoc) station */
   82         IEEE80211_M_STA         = 1,    /* infrastructure station */
   83         IEEE80211_M_WDS         = 2,    /* WDS link */
   84         IEEE80211_M_AHDEMO      = 3,    /* Old lucent compatible adhoc demo */
   85         IEEE80211_M_HOSTAP      = 4,    /* Software Access Point */
   86         IEEE80211_M_MONITOR     = 5,    /* Monitor mode */
   87         IEEE80211_M_MBSS        = 6,    /* MBSS (Mesh Point) link */
   88 };
   89 #define IEEE80211_OPMODE_MAX    (IEEE80211_M_MBSS+1)
   90 
   91 /*
   92  * 802.11g/802.11n protection mode.
   93  */
   94 enum ieee80211_protmode {
   95         IEEE80211_PROT_NONE     = 0,    /* no protection */
   96         IEEE80211_PROT_CTSONLY  = 1,    /* CTS to self */
   97         IEEE80211_PROT_RTSCTS   = 2,    /* RTS-CTS */
   98 };
   99 
  100 /*
  101  * Authentication mode.  The open and shared key authentication
  102  * modes are implemented within the 802.11 layer.  802.1x and
  103  * WPA/802.11i are implemented in user mode by setting the
  104  * 802.11 layer into IEEE80211_AUTH_8021X and deferring
  105  * authentication to user space programs.
  106  */
  107 enum ieee80211_authmode {
  108         IEEE80211_AUTH_NONE     = 0,
  109         IEEE80211_AUTH_OPEN     = 1,            /* open */
  110         IEEE80211_AUTH_SHARED   = 2,            /* shared-key */
  111         IEEE80211_AUTH_8021X    = 3,            /* 802.1x */
  112         IEEE80211_AUTH_AUTO     = 4,            /* auto-select/accept */
  113         /* NB: these are used only for ioctls */
  114         IEEE80211_AUTH_WPA      = 5,            /* WPA/RSN w/ 802.1x/PSK */
  115 };
  116 
  117 /*
  118  * Roaming mode is effectively who controls the operation
  119  * of the 802.11 state machine when operating as a station.
  120  * State transitions are controlled either by the driver
  121  * (typically when management frames are processed by the
  122  * hardware/firmware), the host (auto/normal operation of
  123  * the 802.11 layer), or explicitly through ioctl requests
  124  * when applications like wpa_supplicant want control.
  125  */
  126 enum ieee80211_roamingmode {
  127         IEEE80211_ROAMING_DEVICE= 0,    /* driver/hardware control */
  128         IEEE80211_ROAMING_AUTO  = 1,    /* 802.11 layer control */
  129         IEEE80211_ROAMING_MANUAL= 2,    /* application control */
  130 };
  131 
  132 /*
  133  * Channels are specified by frequency and attributes.
  134  */
  135 struct ieee80211_channel {
  136         uint32_t        ic_flags;       /* see below */
  137         uint16_t        ic_freq;        /* setting in MHz */
  138         uint8_t         ic_ieee;        /* IEEE channel number */
  139         int8_t          ic_maxregpower; /* maximum regulatory tx power in dBm */
  140         int8_t          ic_maxpower;    /* maximum tx power in .5 dBm */
  141         int8_t          ic_minpower;    /* minimum tx power in .5 dBm */
  142         uint8_t         ic_state;       /* dynamic state */
  143         uint8_t         ic_extieee;     /* HT40 extension channel number */
  144         int8_t          ic_maxantgain;  /* maximum antenna gain in .5 dBm */
  145         uint8_t         ic_pad;
  146         uint16_t        ic_devdata;     /* opaque device/driver data */
  147 };
  148 
  149 #define IEEE80211_CHAN_MAX      256
  150 #define IEEE80211_CHAN_BYTES    howmany(IEEE80211_CHAN_MAX, NBBY)
  151 #define IEEE80211_CHAN_ANY      0xffff  /* token for ``any channel'' */
  152 #define IEEE80211_CHAN_ANYC \
  153         ((struct ieee80211_channel *) IEEE80211_CHAN_ANY)
  154 
  155 /* channel attributes */
  156 #define IEEE80211_CHAN_PRIV0    0x00000001 /* driver private bit 0 */
  157 #define IEEE80211_CHAN_PRIV1    0x00000002 /* driver private bit 1 */
  158 #define IEEE80211_CHAN_PRIV2    0x00000004 /* driver private bit 2 */
  159 #define IEEE80211_CHAN_PRIV3    0x00000008 /* driver private bit 3 */
  160 #define IEEE80211_CHAN_TURBO    0x00000010 /* Turbo channel */
  161 #define IEEE80211_CHAN_CCK      0x00000020 /* CCK channel */
  162 #define IEEE80211_CHAN_OFDM     0x00000040 /* OFDM channel */
  163 #define IEEE80211_CHAN_2GHZ     0x00000080 /* 2 GHz spectrum channel. */
  164 #define IEEE80211_CHAN_5GHZ     0x00000100 /* 5 GHz spectrum channel */
  165 #define IEEE80211_CHAN_PASSIVE  0x00000200 /* Only passive scan allowed */
  166 #define IEEE80211_CHAN_DYN      0x00000400 /* Dynamic CCK-OFDM channel */
  167 #define IEEE80211_CHAN_GFSK     0x00000800 /* GFSK channel (FHSS PHY) */
  168 #define IEEE80211_CHAN_GSM      0x00001000 /* 900 MHz spectrum channel */
  169 #define IEEE80211_CHAN_STURBO   0x00002000 /* 11a static turbo channel only */
  170 #define IEEE80211_CHAN_HALF     0x00004000 /* Half rate channel */
  171 #define IEEE80211_CHAN_QUARTER  0x00008000 /* Quarter rate channel */
  172 #define IEEE80211_CHAN_HT20     0x00010000 /* HT 20 channel */
  173 #define IEEE80211_CHAN_HT40U    0x00020000 /* HT 40 channel w/ ext above */
  174 #define IEEE80211_CHAN_HT40D    0x00040000 /* HT 40 channel w/ ext below */
  175 #define IEEE80211_CHAN_DFS      0x00080000 /* DFS required */
  176 #define IEEE80211_CHAN_4MSXMIT  0x00100000 /* 4ms limit on frame length */
  177 #define IEEE80211_CHAN_NOADHOC  0x00200000 /* adhoc mode not allowed */
  178 #define IEEE80211_CHAN_NOHOSTAP 0x00400000 /* hostap mode not allowed */
  179 #define IEEE80211_CHAN_11D      0x00800000 /* 802.11d required */
  180 
  181 #define IEEE80211_CHAN_HT40     (IEEE80211_CHAN_HT40U | IEEE80211_CHAN_HT40D)
  182 #define IEEE80211_CHAN_HT       (IEEE80211_CHAN_HT20 | IEEE80211_CHAN_HT40)
  183 
  184 #define IEEE80211_CHAN_BITS \
  185         "\2\1PRIV0\2PRIV2\3PRIV3\4PRIV4\5TURBO\6CCK\7OFDM\0102GHZ\0115GHZ" \
  186         "\12PASSIVE\13DYN\14GFSK\15GSM\16STURBO\17HALF\20QUARTER\21HT20" \
  187         "\22HT40U\23HT40D\24DFS\0254MSXMIT\26NOADHOC\27NOHOSTAP\03011D"
  188 
  189 /*
  190  * Useful combinations of channel characteristics.
  191  */
  192 #define IEEE80211_CHAN_FHSS \
  193         (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_GFSK)
  194 #define IEEE80211_CHAN_A \
  195         (IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM)
  196 #define IEEE80211_CHAN_B \
  197         (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_CCK)
  198 #define IEEE80211_CHAN_PUREG \
  199         (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_OFDM)
  200 #define IEEE80211_CHAN_G \
  201         (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN)
  202 #define IEEE80211_CHAN_108A \
  203         (IEEE80211_CHAN_A | IEEE80211_CHAN_TURBO)
  204 #define IEEE80211_CHAN_108G \
  205         (IEEE80211_CHAN_PUREG | IEEE80211_CHAN_TURBO)
  206 #define IEEE80211_CHAN_ST \
  207         (IEEE80211_CHAN_108A | IEEE80211_CHAN_STURBO)
  208 
  209 #define IEEE80211_CHAN_ALL \
  210         (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_GFSK | \
  211          IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_DYN | \
  212          IEEE80211_CHAN_HALF | IEEE80211_CHAN_QUARTER | \
  213          IEEE80211_CHAN_HT)
  214 #define IEEE80211_CHAN_ALLTURBO \
  215         (IEEE80211_CHAN_ALL | IEEE80211_CHAN_TURBO | IEEE80211_CHAN_STURBO)
  216 
  217 #define IEEE80211_IS_CHAN_FHSS(_c) \
  218         (((_c)->ic_flags & IEEE80211_CHAN_FHSS) == IEEE80211_CHAN_FHSS)
  219 #define IEEE80211_IS_CHAN_A(_c) \
  220         (((_c)->ic_flags & IEEE80211_CHAN_A) == IEEE80211_CHAN_A)
  221 #define IEEE80211_IS_CHAN_B(_c) \
  222         (((_c)->ic_flags & IEEE80211_CHAN_B) == IEEE80211_CHAN_B)
  223 #define IEEE80211_IS_CHAN_PUREG(_c) \
  224         (((_c)->ic_flags & IEEE80211_CHAN_PUREG) == IEEE80211_CHAN_PUREG)
  225 #define IEEE80211_IS_CHAN_G(_c) \
  226         (((_c)->ic_flags & IEEE80211_CHAN_G) == IEEE80211_CHAN_G)
  227 #define IEEE80211_IS_CHAN_ANYG(_c) \
  228         (IEEE80211_IS_CHAN_PUREG(_c) || IEEE80211_IS_CHAN_G(_c))
  229 #define IEEE80211_IS_CHAN_ST(_c) \
  230         (((_c)->ic_flags & IEEE80211_CHAN_ST) == IEEE80211_CHAN_ST)
  231 #define IEEE80211_IS_CHAN_108A(_c) \
  232         (((_c)->ic_flags & IEEE80211_CHAN_108A) == IEEE80211_CHAN_108A)
  233 #define IEEE80211_IS_CHAN_108G(_c) \
  234         (((_c)->ic_flags & IEEE80211_CHAN_108G) == IEEE80211_CHAN_108G)
  235 
  236 #define IEEE80211_IS_CHAN_2GHZ(_c) \
  237         (((_c)->ic_flags & IEEE80211_CHAN_2GHZ) != 0)
  238 #define IEEE80211_IS_CHAN_5GHZ(_c) \
  239         (((_c)->ic_flags & IEEE80211_CHAN_5GHZ) != 0)
  240 #define IEEE80211_IS_CHAN_PASSIVE(_c) \
  241         (((_c)->ic_flags & IEEE80211_CHAN_PASSIVE) != 0)
  242 #define IEEE80211_IS_CHAN_OFDM(_c) \
  243         (((_c)->ic_flags & (IEEE80211_CHAN_OFDM | IEEE80211_CHAN_DYN)) != 0)
  244 #define IEEE80211_IS_CHAN_CCK(_c) \
  245         (((_c)->ic_flags & (IEEE80211_CHAN_CCK | IEEE80211_CHAN_DYN)) != 0)
  246 #define IEEE80211_IS_CHAN_DYN(_c) \
  247         (((_c)->ic_flags & IEEE80211_CHAN_DYN) == IEEE80211_CHAN_DYN)
  248 #define IEEE80211_IS_CHAN_GFSK(_c) \
  249         (((_c)->ic_flags & IEEE80211_CHAN_GFSK) != 0)
  250 #define IEEE80211_IS_CHAN_TURBO(_c) \
  251         (((_c)->ic_flags & IEEE80211_CHAN_TURBO) != 0)
  252 #define IEEE80211_IS_CHAN_STURBO(_c) \
  253         (((_c)->ic_flags & IEEE80211_CHAN_STURBO) != 0)
  254 #define IEEE80211_IS_CHAN_DTURBO(_c) \
  255         (((_c)->ic_flags & \
  256         (IEEE80211_CHAN_TURBO | IEEE80211_CHAN_STURBO)) == IEEE80211_CHAN_TURBO)
  257 #define IEEE80211_IS_CHAN_HALF(_c) \
  258         (((_c)->ic_flags & IEEE80211_CHAN_HALF) != 0)
  259 #define IEEE80211_IS_CHAN_QUARTER(_c) \
  260         (((_c)->ic_flags & IEEE80211_CHAN_QUARTER) != 0)
  261 #define IEEE80211_IS_CHAN_FULL(_c) \
  262         (((_c)->ic_flags & (IEEE80211_CHAN_QUARTER | IEEE80211_CHAN_HALF)) == 0)
  263 #define IEEE80211_IS_CHAN_GSM(_c) \
  264         (((_c)->ic_flags & IEEE80211_CHAN_GSM) != 0)
  265 #define IEEE80211_IS_CHAN_HT(_c) \
  266         (((_c)->ic_flags & IEEE80211_CHAN_HT) != 0)
  267 #define IEEE80211_IS_CHAN_HT20(_c) \
  268         (((_c)->ic_flags & IEEE80211_CHAN_HT20) != 0)
  269 #define IEEE80211_IS_CHAN_HT40(_c) \
  270         (((_c)->ic_flags & IEEE80211_CHAN_HT40) != 0)
  271 #define IEEE80211_IS_CHAN_HT40U(_c) \
  272         (((_c)->ic_flags & IEEE80211_CHAN_HT40U) != 0)
  273 #define IEEE80211_IS_CHAN_HT40D(_c) \
  274         (((_c)->ic_flags & IEEE80211_CHAN_HT40D) != 0)
  275 #define IEEE80211_IS_CHAN_HTA(_c) \
  276         (IEEE80211_IS_CHAN_5GHZ(_c) && \
  277          ((_c)->ic_flags & IEEE80211_CHAN_HT) != 0)
  278 #define IEEE80211_IS_CHAN_HTG(_c) \
  279         (IEEE80211_IS_CHAN_2GHZ(_c) && \
  280          ((_c)->ic_flags & IEEE80211_CHAN_HT) != 0)
  281 #define IEEE80211_IS_CHAN_DFS(_c) \
  282         (((_c)->ic_flags & IEEE80211_CHAN_DFS) != 0)
  283 #define IEEE80211_IS_CHAN_NOADHOC(_c) \
  284         (((_c)->ic_flags & IEEE80211_CHAN_NOADHOC) != 0)
  285 #define IEEE80211_IS_CHAN_NOHOSTAP(_c) \
  286         (((_c)->ic_flags & IEEE80211_CHAN_NOHOSTAP) != 0)
  287 #define IEEE80211_IS_CHAN_11D(_c) \
  288         (((_c)->ic_flags & IEEE80211_CHAN_11D) != 0)
  289 
  290 #define IEEE80211_CHAN2IEEE(_c)         (_c)->ic_ieee
  291 
  292 /* dynamic state */
  293 #define IEEE80211_CHANSTATE_RADAR       0x01    /* radar detected */
  294 #define IEEE80211_CHANSTATE_CACDONE     0x02    /* CAC completed */
  295 #define IEEE80211_CHANSTATE_CWINT       0x04    /* interference detected */
  296 #define IEEE80211_CHANSTATE_NORADAR     0x10    /* post notify on radar clear */
  297 
  298 #define IEEE80211_IS_CHAN_RADAR(_c) \
  299         (((_c)->ic_state & IEEE80211_CHANSTATE_RADAR) != 0)
  300 #define IEEE80211_IS_CHAN_CACDONE(_c) \
  301         (((_c)->ic_state & IEEE80211_CHANSTATE_CACDONE) != 0)
  302 #define IEEE80211_IS_CHAN_CWINT(_c) \
  303         (((_c)->ic_state & IEEE80211_CHANSTATE_CWINT) != 0)
  304 
  305 /* ni_chan encoding for FH phy */
  306 #define IEEE80211_FH_CHANMOD    80
  307 #define IEEE80211_FH_CHAN(set,pat)      (((set)-1)*IEEE80211_FH_CHANMOD+(pat))
  308 #define IEEE80211_FH_CHANSET(chan)      ((chan)/IEEE80211_FH_CHANMOD+1)
  309 #define IEEE80211_FH_CHANPAT(chan)      ((chan)%IEEE80211_FH_CHANMOD)
  310 
  311 #define IEEE80211_TID_SIZE      (WME_NUM_TID+1) /* WME TID's +1 for non-QoS */
  312 #define IEEE80211_NONQOS_TID    WME_NUM_TID     /* index for non-QoS sta */
  313 
  314 /*
  315  * The 802.11 spec says at most 2007 stations may be
  316  * associated at once.  For most AP's this is way more
  317  * than is feasible so we use a default of 128.  This
  318  * number may be overridden by the driver and/or by
  319  * user configuration but may not be less than IEEE80211_AID_MIN.
  320  */
  321 #define IEEE80211_AID_DEF               128
  322 #define IEEE80211_AID_MIN               16
  323 
  324 /*
  325  * 802.11 rate set.
  326  */
  327 #define IEEE80211_RATE_SIZE     8               /* 802.11 standard */
  328 #define IEEE80211_RATE_MAXSIZE  15              /* max rates we'll handle */
  329 
  330 struct ieee80211_rateset {
  331         uint8_t         rs_nrates;
  332         uint8_t         rs_rates[IEEE80211_RATE_MAXSIZE];
  333 };
  334 
  335 /*
  336  * 802.11n variant of ieee80211_rateset.  Instead of
  337  * legacy rates the entries are MCS rates.  We define
  338  * the structure such that it can be used interchangeably
  339  * with an ieee80211_rateset (modulo structure size).
  340  */
  341 #define IEEE80211_HTRATE_MAXSIZE        77
  342 
  343 struct ieee80211_htrateset {
  344         uint8_t         rs_nrates;
  345         uint8_t         rs_rates[IEEE80211_HTRATE_MAXSIZE];
  346 };
  347 
  348 #define IEEE80211_RATE_MCS      0x80
  349 
  350 /*
  351  * Per-mode transmit parameters/controls visible to user space.
  352  * These can be used to set fixed transmit rate for all operating
  353  * modes or on a per-client basis according to the capabilities
  354  * of the client (e.g. an 11b client associated to an 11g ap).
  355  *
  356  * MCS are distinguished from legacy rates by or'ing in 0x80.
  357  */
  358 struct ieee80211_txparam {
  359         uint8_t         ucastrate;      /* ucast data rate (legacy/MCS|0x80) */
  360         uint8_t         mgmtrate;       /* mgmt frame rate (legacy/MCS|0x80) */
  361         uint8_t         mcastrate;      /* multicast rate (legacy/MCS|0x80) */
  362         uint8_t         maxretry;       /* max unicast data retry count */
  363 };
  364 
  365 /*
  366  * Per-mode roaming state visible to user space.  There are two
  367  * thresholds that control whether roaming is considered; when
  368  * either is exceeded the 802.11 layer will check the scan cache
  369  * for another AP.  If the cache is stale then a scan may be
  370  * triggered.
  371  */
  372 struct ieee80211_roamparam {
  373         int8_t          rssi;           /* rssi thresh (.5 dBm) */
  374         uint8_t         rate;           /* tx rate thresh (.5 Mb/s or MCS) */
  375         uint16_t        pad;            /* reserve */
  376 };
  377 
  378 /*
  379  * Regulatory Information.
  380  */
  381 struct ieee80211_regdomain {
  382         uint16_t        regdomain;      /* SKU */
  383         uint16_t        country;        /* ISO country code */
  384         uint8_t         location;       /* I (indoor), O (outdoor), other */
  385         uint8_t         ecm;            /* Extended Channel Mode */
  386         char            isocc[2];       /* country code string */
  387         short           pad[2];
  388 };
  389 
  390 /*
  391  * MIMO antenna/radio state.
  392  */
  393 
  394 /*
  395  * XXX This doesn't yet export both ctl/ext chain details
  396  * XXX TODO: IEEE80211_MAX_CHAINS is defined in _freebsd.h, not here;
  397  * figure out how to pull it in!
  398  */
  399 struct ieee80211_mimo_info {
  400         int8_t          rssi[3];        /* per-antenna rssi */
  401         int8_t          noise[3];       /* per-antenna noise floor */
  402         uint8_t         pad[2];
  403         uint32_t        evm[3];         /* EVM data */
  404 };
  405 #endif /* _NET80211__IEEE80211_H_ */

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