package/network/services/hostapd/madwifi/net80211/_ieee80211.h

   1 /*-
   2  * Copyright (c) 2001 Atsushi Onoe
   3  * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * Alternatively, this software may be distributed under the terms of the
  18  * GNU General Public License ("GPL") version 2 as published by the Free
  19  * Software Foundation.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  * $Id: _ieee80211.h 3207 2008-01-18 21:25:05Z mtaylor $
  33  */
  34 #ifndef _NET80211__IEEE80211_H_
  35 #define _NET80211__IEEE80211_H_
  36
  37 enum ieee80211_phytype {
  38         IEEE80211_T_DS,                 /* direct sequence spread spectrum */
  39         IEEE80211_T_FH,                 /* frequency hopping */
  40         IEEE80211_T_OFDM,               /* frequency division multiplexing */
  41         IEEE80211_T_TURBO,              /* high rate OFDM, aka turbo mode */
  42 };
  43 #define IEEE80211_T_CCK IEEE80211_T_DS  /* more common nomenclature */
  44
  45 /* XXX: not really a mode; there are really multiple PHYs */
  46 enum ieee80211_phymode {
  47         IEEE80211_MODE_AUTO     = 0,    /* autoselect */
  48         IEEE80211_MODE_11A      = 1,    /* 5GHz, OFDM */
  49         IEEE80211_MODE_11B      = 2,    /* 2GHz, CCK */
  50         IEEE80211_MODE_11G      = 3,    /* 2GHz, OFDM */
  51         IEEE80211_MODE_FH       = 4,    /* 2GHz, GFSK */
  52         IEEE80211_MODE_TURBO_A  = 5,    /* 5GHz, OFDM, 2x clock dynamic turbo */
  53         IEEE80211_MODE_TURBO_G  = 6,    /* 2GHz, OFDM, 2x clock  dynamic turbo*/
  54 };
  55 #define IEEE80211_MODE_MAX      (IEEE80211_MODE_TURBO_G+1)
  56
  57 enum ieee80211_opmode {
  58         IEEE80211_M_STA         = 1,    /* infrastructure station */
  59         IEEE80211_M_IBSS        = 0,    /* IBSS (adhoc) station */
  60         IEEE80211_M_AHDEMO      = 3,    /* Old lucent compatible adhoc demo */
  61         IEEE80211_M_HOSTAP      = 6,    /* Software Access Point */
  62         IEEE80211_M_MONITOR     = 8,    /* Monitor mode */
  63         IEEE80211_M_WDS         = 2     /* WDS link */
  64 };
  65
  66 /*
  67  * True if this mode will send beacon on a regular interval, like AP
  68  * or IBSS
  69  */
  70 #define IEEE80211_IS_MODE_BEACON(_opmode) \
  71         ((_opmode == IEEE80211_M_IBSS) || \
  72          (_opmode == IEEE80211_M_HOSTAP))
  73
  74 /*
  75  * True if this mode must behave like a DFS master, ie do Channel
  76  * Check Availability and In Service Monitoring. We need to make sure
  77  * that all modes cannot send data without being authorized. Such
  78  * enforcement is not done in monitor mode however.
  79  */
  80
  81 #define IEEE80211_IS_MODE_DFS_MASTER(_opmode) \
  82         ((_opmode == IEEE80211_M_IBSS) || \
  83          (_opmode == IEEE80211_M_AHDEMO) || \
  84          (_opmode == IEEE80211_M_HOSTAP) || \
  85          (_opmode == IEEE80211_M_WDS))
  86
  87 /*
  88  * 802.11g protection mode.
  89  */
  90 enum ieee80211_protmode {
  91         IEEE80211_PROT_NONE     = 0,    /* no protection */
  92         IEEE80211_PROT_CTSONLY  = 1,    /* CTS to self */
  93         IEEE80211_PROT_RTSCTS   = 2,    /* RTS-CTS */
  94 };
  95
  96 /*
  97  * Authentication mode.
  98  */
  99 enum ieee80211_authmode {
 100         IEEE80211_AUTH_NONE     = 0,
 101         IEEE80211_AUTH_OPEN     = 1,    /* open */
 102         IEEE80211_AUTH_SHARED   = 2,    /* shared-key */
 103         IEEE80211_AUTH_8021X    = 3,    /* 802.1x */
 104         IEEE80211_AUTH_AUTO     = 4,    /* auto-select/accept */
 105         /* NB: these are used only for ioctls */
 106         IEEE80211_AUTH_WPA      = 5,    /* WPA/RSN w/ 802.1x/PSK */
 107 };
 108
 109 /*
 110  * Roaming mode is effectively who controls the operation
 111  * of the 802.11 state machine when operating as a station.
 112  * State transitions are controlled either by the driver
 113  * (typically when management frames are processed by the
 114  * hardware/firmware), the host (auto/normal operation of
 115  * the 802.11 layer), or explicitly through ioctl requests
 116  * when applications like wpa_supplicant want control.
 117  */
 118 enum ieee80211_roamingmode {
 119         IEEE80211_ROAMING_DEVICE= 0,    /* driver/hardware control */
 120         IEEE80211_ROAMING_AUTO  = 1,    /* 802.11 layer control */
 121         IEEE80211_ROAMING_MANUAL= 2,    /* application control */
 122 };
 123
 124 /*
 125  * Scanning mode controls station scanning work; this is
 126  * used only when roaming mode permits the host to select
 127  * the bss to join/channel to use.
 128  */
 129 enum ieee80211_scanmode {
 130         IEEE80211_SCAN_DEVICE   = 0,    /* driver/hardware control */
 131         IEEE80211_SCAN_BEST     = 1,    /* 802.11 layer selects best */
 132         IEEE80211_SCAN_FIRST    = 2,    /* take first suitable candidate */
 133 };
 134
 135 enum ieee80211_scanflags {
 136         IEEE80211_NOSCAN_DEFAULT = (1 << 0),
 137         IEEE80211_NOSCAN_SET     = (1 << 1),
 138 };
 139
 140 /*
 141  * Channels are specified by frequency and attributes.
 142  */
 143 struct ieee80211_channel {
 144         u_int16_t ic_freq;      /* setting in MHz */
 145         u_int16_t ic_flags;     /* see below */
 146         u_int8_t ic_ieee;       /* IEEE channel number */
 147         int8_t ic_maxregpower;  /* maximum regulatory tx power in dBm */
 148         int8_t ic_maxpower;     /* maximum tx power in dBm */
 149         int8_t ic_minpower;     /* minimum tx power in dBm */
 150         u_int8_t ic_scanflags;
 151         u_int8_t ic_idletime; /* phy idle time in % */
 152 };
 153
 154 #define IEEE80211_CHAN_MAX      255
 155 #define IEEE80211_CHAN_BYTES    32      /* howmany(IEEE80211_CHAN_MAX, NBBY) */
 156 #define IEEE80211_CHAN_ANY      0xffff  /* token for ``any channel'' */
 157 #define IEEE80211_CHAN_ANYC     ((struct ieee80211_channel *) IEEE80211_CHAN_ANY)
 158
 159 #define IEEE80211_RADAR_CHANCHANGE_TBTT_COUNT   0
 160 #define IEEE80211_DEFAULT_CHANCHANGE_TBTT_COUNT 3
 161
 162 #define IEEE80211_RADAR_TEST_MUTE_CHAN  36      /* Move to channel 36 for mute test */
 163
 164 /* bits 0-3 are for private use by drivers */
 165 /* channel attributes */
 166 #define IEEE80211_CHAN_TURBO    0x0010  /* Turbo channel */
 167 #define IEEE80211_CHAN_CCK      0x0020  /* CCK channel */
 168 #define IEEE80211_CHAN_OFDM     0x0040  /* OFDM channel */
 169 #define IEEE80211_CHAN_2GHZ     0x0080  /* 2 GHz spectrum channel. */
 170 #define IEEE80211_CHAN_5GHZ     0x0100  /* 5 GHz spectrum channel */
 171 #define IEEE80211_CHAN_PASSIVE  0x0200  /* Only passive scan allowed */
 172 #define IEEE80211_CHAN_DYN      0x0400  /* Dynamic CCK-OFDM channel */
 173 #define IEEE80211_CHAN_GFSK     0x0800  /* GFSK channel (FHSS PHY) */
 174 #define IEEE80211_CHAN_RADAR    0x1000  /* Radar found on channel */
 175 #define IEEE80211_CHAN_STURBO   0x2000  /* 11a static turbo channel only */
 176 #define IEEE80211_CHAN_HALF     0x4000  /* Half rate channel */
 177 #define IEEE80211_CHAN_QUARTER  0x8000  /* Quarter rate channel */
 178
 179 /*
 180  * Useful combinations of channel characteristics.
 181  */
 182 #define IEEE80211_CHAN_FHSS \
 183         (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_GFSK)
 184 #define IEEE80211_CHAN_A \
 185         (IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM)
 186 #define IEEE80211_CHAN_B \
 187         (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_CCK)
 188 #define IEEE80211_CHAN_PUREG \
 189         (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_OFDM)
 190 #define IEEE80211_CHAN_G \
 191         (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN)
 192 #define IEEE80211_CHAN_108A \
 193         (IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_TURBO)
 194 #define IEEE80211_CHAN_108G \
 195         (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_TURBO)
 196 #define IEEE80211_CHAN_ST \
 197         (IEEE80211_CHAN_108A | IEEE80211_CHAN_STURBO)
 198
 199 #define IEEE80211_CHAN_ALL \
 200         (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_GFSK | \
 201          IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_DYN)
 202 #define IEEE80211_CHAN_ALLTURBO \
 203         (IEEE80211_CHAN_ALL | IEEE80211_CHAN_TURBO | IEEE80211_CHAN_STURBO)
 204
 205 #define IEEE80211_IS_CHAN_FHSS(_c) \
 206         (((_c)->ic_flags & IEEE80211_CHAN_FHSS) == IEEE80211_CHAN_FHSS)
 207 #define IEEE80211_IS_CHAN_A(_c) \
 208         (((_c)->ic_flags & IEEE80211_CHAN_A) == IEEE80211_CHAN_A)
 209 #define IEEE80211_IS_CHAN_B(_c) \
 210         (((_c)->ic_flags & IEEE80211_CHAN_B) == IEEE80211_CHAN_B)
 211 #define IEEE80211_IS_CHAN_PUREG(_c) \
 212         (((_c)->ic_flags & IEEE80211_CHAN_PUREG) == IEEE80211_CHAN_PUREG)
 213 #define IEEE80211_IS_CHAN_G(_c) \
 214         (((_c)->ic_flags & IEEE80211_CHAN_G) == IEEE80211_CHAN_G)
 215 #define IEEE80211_IS_CHAN_ANYG(_c) \
 216         (IEEE80211_IS_CHAN_PUREG(_c) || IEEE80211_IS_CHAN_G(_c))
 217 #define IEEE80211_IS_CHAN_ST(_c) \
 218         (((_c)->ic_flags & IEEE80211_CHAN_ST) == IEEE80211_CHAN_ST)
 219 #define IEEE80211_IS_CHAN_108A(_c) \
 220         (((_c)->ic_flags & IEEE80211_CHAN_108A) == IEEE80211_CHAN_108A)
 221 #define IEEE80211_IS_CHAN_108G(_c) \
 222         (((_c)->ic_flags & IEEE80211_CHAN_108G) == IEEE80211_CHAN_108G)
 223
 224 #define IEEE80211_IS_CHAN_2GHZ(_c) \
 225         (((_c)->ic_flags & IEEE80211_CHAN_2GHZ) != 0)
 226 #define IEEE80211_IS_CHAN_5GHZ(_c) \
 227         (((_c)->ic_flags & IEEE80211_CHAN_5GHZ) != 0)
 228 #define IEEE80211_IS_CHAN_OFDM(_c) \
 229         (((_c)->ic_flags & IEEE80211_CHAN_OFDM) != 0)
 230 #define IEEE80211_IS_CHAN_CCK(_c) \
 231         (((_c)->ic_flags & IEEE80211_CHAN_CCK) != 0)
 232 #define IEEE80211_IS_CHAN_GFSK(_c) \
 233         (((_c)->ic_flags & IEEE80211_CHAN_GFSK) != 0)
 234 #define IEEE80211_IS_CHAN_TURBO(_c) \
 235         (((_c)->ic_flags & IEEE80211_CHAN_TURBO) != 0)
 236 #define IEEE80211_IS_CHAN_STURBO(_c) \
 237         (((_c)->ic_flags & IEEE80211_CHAN_STURBO) != 0)
 238 #define IEEE80211_IS_CHAN_DTURBO(_c) \
 239         (((_c)->ic_flags & \
 240         (IEEE80211_CHAN_TURBO | IEEE80211_CHAN_STURBO)) == IEEE80211_CHAN_TURBO)
 241 #define IEEE80211_IS_CHAN_HALF(_c) \
 242         (((_c)->ic_flags & IEEE80211_CHAN_HALF) != 0)
 243 #define IEEE80211_IS_CHAN_QUARTER(_c) \
 244         (((_c)->ic_flags & IEEE80211_CHAN_QUARTER) != 0)
 245
 246 #define IEEE80211_IS_CHAN_RADAR(_c) \
 247         (((_c)->ic_flags & IEEE80211_CHAN_RADAR) != 0)
 248 #define IEEE80211_IS_CHAN_PASSIVE(_c) \
 249         (((_c)->ic_flags & IEEE80211_CHAN_PASSIVE) != 0)
 250 #define IEEE80211_ARE_CHANS_SAME_MODE(_a, _b) \
 251         (((_a)->ic_flags & IEEE80211_CHAN_ALLTURBO) == ((_b)->ic_flags & IEEE80211_CHAN_ALLTURBO))
 252
 253 /* ni_chan encoding for FH phy */
 254 #define IEEE80211_FH_CHANMOD            80
 255 #define IEEE80211_FH_CHAN(set,pat)      (((set) - 1) * IEEE80211_FH_CHANMOD + (pat))
 256 #define IEEE80211_FH_CHANSET(chan)      ((chan) / IEEE80211_FH_CHANMOD + 1)
 257 #define IEEE80211_FH_CHANPAT(chan)      ((chan) % IEEE80211_FH_CHANMOD)
 258
 259 /*
 260  * Spectrum Management (IEEE 802.11h-2003)
 261  */
 262
 263 /* algorithm for (re)association based on supported channels
 264  * (the one mentioned in 11.6.1 as out of scope of .11h) */
 265 enum ieee80211_sc_algorithm {
 266         IEEE80211_SC_NONE,
 267         /*
 268          * Do not disallow anyone from associating. When needed, channel will
 269          * be switched to the most suitable channel, no matter client stations
 270          * support it or not.
 271          */
 272
 273         IEEE80211_SC_LOOSE,
 274         /*
 275          * Do not disallow anyone from associating. When needed, channel will
 276          * be switched to a suitable channel, which will be chosen taking
 277          * ni->ni_suppchans and ic->ic_sc_sldg under consideration.
 278          */
 279
 280         IEEE80211_SC_TIGHT,
 281         /*
 282          * Allow to associate if there are at least ic->ic_mincom channels
 283          * common to the associating station and all of the already associated
 284          * stations. If the number of new common channels is less than
 285          * required, consider disassociating some other STAs. Such a
 286          * disassociation will be performed if (and only if) the association we
 287          * are currently considering would be then possible and the count of
 288          * the resultant set of common channels (ic_chan_nodes[i] ==
 289          * ic_cn_total) would increase by some amount. Whether the number of
 290          * the new channels that could be gained is enough to sacrifice a
 291          * number of STAs is determined by the ic->ic_slcg parameter.
 292          */
 293
 294         IEEE80211_SC_STRICT
 295         /*
 296          * Basically the same behavior as IEEE80211_SC_TIGHT, except that if a
 297          * station does not specify Supported Channels, then it is denied to
 298          * associate.
 299          */
 300 };
 301
 302 /*
 303  * 802.11 rate set.
 304  */
 305 #define IEEE80211_RATE_SIZE     8               /* 802.11 standard */
 306 #define IEEE80211_RATE_MAXSIZE  15              /* max rates we'll handle */
 307 #define IEEE80211_SANITISE_RATESIZE(_rsz) \
 308         ((_rsz > IEEE80211_RATE_MAXSIZE) ? IEEE80211_RATE_MAXSIZE : _rsz)
 309
 310 struct ieee80211_rateset {
 311         u_int8_t rs_nrates;
 312         u_int8_t rs_rates[IEEE80211_RATE_MAXSIZE];
 313 };
 314
 315 struct ieee80211_roam {
 316         int8_t rssi11a;         /* rssi thresh for 11a bss */
 317         int8_t rssi11b;         /* for 11g sta in 11b bss */
 318         int8_t rssi11bOnly;     /* for 11b sta */
 319         u_int8_t pad1;
 320         u_int8_t rate11a;       /* rate thresh for 11a bss */
 321         u_int8_t rate11b;       /* for 11g sta in 11b bss */
 322         u_int8_t rate11bOnly;   /* for 11b sta */
 323         u_int8_t pad2;
 324 };
 325 #endif /* _NET80211__IEEE80211_H_ */