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/*-
 * Copyright (c) 2001 Atsushi Onoe
 * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * $FreeBSD: src/sys/net80211/_ieee80211.h,v 1.2 2004/12/31 22:42:38 sam Exp $
 */
#ifndef _NET80211__IEEE80211_H_
#define _NET80211__IEEE80211_H_

enum ieee80211_phytype {
        IEEE80211_T_DS,                 /* direct sequence spread spectrum */
        IEEE80211_T_FH,                 /* frequency hopping */
        IEEE80211_T_OFDM,               /* frequency division multiplexing */
        IEEE80211_T_TURBO               /* high rate OFDM, aka turbo mode */
};
#define IEEE80211_T_CCK IEEE80211_T_DS  /* more common nomenclature */

/* XXX not really a mode; there are really multiple PHY's */
enum ieee80211_phymode {
        IEEE80211_MODE_AUTO     = 0,    /* autoselect */
        IEEE80211_MODE_11A      = 1,    /* 5GHz, OFDM */
        IEEE80211_MODE_11B      = 2,    /* 2GHz, CCK */
        IEEE80211_MODE_11G      = 3,    /* 2GHz, OFDM */
        IEEE80211_MODE_FH       = 4,    /* 2GHz, GFSK */
        IEEE80211_MODE_TURBO_A  = 5,    /* 5GHz, OFDM, 2x clock */
        IEEE80211_MODE_TURBO_G  = 6     /* 2GHz, OFDM, 2x clock */
};
#define IEEE80211_MODE_MAX      (IEEE80211_MODE_TURBO_G+1)

enum ieee80211_opmode {
        IEEE80211_M_STA         = 1,    /* infrastructure station */
        IEEE80211_M_IBSS        = 0,    /* IBSS (adhoc) station */
        IEEE80211_M_AHDEMO      = 3,    /* Old lucent compatible adhoc demo */
        IEEE80211_M_HOSTAP      = 6,    /* Software Access Point */
        IEEE80211_M_MONITOR     = 8     /* Monitor mode */
};

/*
 * 802.11g protection mode.
 */
enum ieee80211_protmode {
        IEEE80211_PROT_NONE     = 0,    /* no protection */
        IEEE80211_PROT_CTSONLY  = 1,    /* CTS to self */
        IEEE80211_PROT_RTSCTS   = 2     /* RTS-CTS */
};

/*
 * Authentication mode.
 */
enum ieee80211_authmode {
        IEEE80211_AUTH_NONE     = 0,
        IEEE80211_AUTH_OPEN     = 1,            /* open */
        IEEE80211_AUTH_SHARED   = 2,            /* shared-key */
        IEEE80211_AUTH_8021X    = 3,            /* 802.1x */
        IEEE80211_AUTH_AUTO     = 4,            /* auto-select/accept */
        /* NB: these are used only for ioctls */
        IEEE80211_AUTH_WPA      = 5             /* WPA/RSN w/ 802.1x/PSK */
};

/*
 * Roaming mode is effectively who controls the operation
 * of the 802.11 state machine when operating as a station.
 * State transitions are controlled either by the driver
 * (typically when management frames are processed by the
 * hardware/firmware), the host (auto/normal operation of
 * the 802.11 layer), or explicitly through ioctl requests
 * when applications like wpa_supplicant want control.
 */
enum ieee80211_roamingmode {
        IEEE80211_ROAMING_DEVICE= 0,    /* driver/hardware control */
        IEEE80211_ROAMING_AUTO  = 1,    /* 802.11 layer control */
        IEEE80211_ROAMING_MANUAL= 2     /* application control */
};

/*
 * Channels are specified by frequency and attributes.
 */
struct ieee80211_channel {
        u_int16_t       ic_freq;        /* setting in Mhz */
        u_int16_t       ic_flags;       /* see below */
};

#define IEEE80211_CHAN_MAX      255
#define IEEE80211_CHAN_BYTES    32      /* howmany(IEEE80211_CHAN_MAX, NBBY) */
#define IEEE80211_CHAN_ANY      0xffff  /* token for ``any channel'' */
#define IEEE80211_CHAN_ANYC \
        ((struct ieee80211_channel *) IEEE80211_CHAN_ANY)

/* bits 0-3 are for private use by drivers */
/* channel attributes */
#define IEEE80211_CHAN_TURBO    0x0010  /* Turbo channel */
#define IEEE80211_CHAN_CCK      0x0020  /* CCK channel */
#define IEEE80211_CHAN_OFDM     0x0040  /* OFDM channel */
#define IEEE80211_CHAN_2GHZ     0x0080  /* 2 GHz spectrum channel. */
#define IEEE80211_CHAN_5GHZ     0x0100  /* 5 GHz spectrum channel */
#define IEEE80211_CHAN_PASSIVE  0x0200  /* Only passive scan allowed */
#define IEEE80211_CHAN_DYN      0x0400  /* Dynamic CCK-OFDM channel */
#define IEEE80211_CHAN_GFSK     0x0800  /* GFSK channel (FHSS PHY) */

/*
 * Useful combinations of channel characteristics.
 */
#define IEEE80211_CHAN_FHSS \
        (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_GFSK)
#define IEEE80211_CHAN_A \
        (IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM)
#define IEEE80211_CHAN_B \
        (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_CCK)
#define IEEE80211_CHAN_PUREG \
        (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_OFDM)
#define IEEE80211_CHAN_G \
        (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN)
#define IEEE80211_CHAN_T \
        (IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_TURBO)
#define IEEE80211_CHAN_108G \
        (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_TURBO)

#define IEEE80211_IS_CHAN_FHSS(_c) \
        (((_c)->ic_flags & IEEE80211_CHAN_FHSS) == IEEE80211_CHAN_FHSS)
#define IEEE80211_IS_CHAN_A(_c) \
        (((_c)->ic_flags & IEEE80211_CHAN_A) == IEEE80211_CHAN_A)
#define IEEE80211_IS_CHAN_B(_c) \
        (((_c)->ic_flags & IEEE80211_CHAN_B) == IEEE80211_CHAN_B)
#define IEEE80211_IS_CHAN_PUREG(_c) \
        (((_c)->ic_flags & IEEE80211_CHAN_PUREG) == IEEE80211_CHAN_PUREG)
#define IEEE80211_IS_CHAN_G(_c) \
        (((_c)->ic_flags & IEEE80211_CHAN_G) == IEEE80211_CHAN_G)
#define IEEE80211_IS_CHAN_T(_c) \
        (((_c)->ic_flags & IEEE80211_CHAN_T) == IEEE80211_CHAN_T)
#define IEEE80211_IS_CHAN_108G(_c) \
        (((_c)->ic_flags & IEEE80211_CHAN_108G) == IEEE80211_CHAN_108G)

#define IEEE80211_IS_CHAN_2GHZ(_c) \
        (((_c)->ic_flags & IEEE80211_CHAN_2GHZ) != 0)
#define IEEE80211_IS_CHAN_5GHZ(_c) \
        (((_c)->ic_flags & IEEE80211_CHAN_5GHZ) != 0)
#define IEEE80211_IS_CHAN_OFDM(_c) \
        (((_c)->ic_flags & IEEE80211_CHAN_OFDM) != 0)
#define IEEE80211_IS_CHAN_CCK(_c) \
        (((_c)->ic_flags & IEEE80211_CHAN_CCK) != 0)
#define IEEE80211_IS_CHAN_GFSK(_c) \
        (((_c)->ic_flags & IEEE80211_CHAN_GFSK) != 0)

/* ni_chan encoding for FH phy */
#define IEEE80211_FH_CHANMOD    80
#define IEEE80211_FH_CHAN(set,pat)      (((set)-1)*IEEE80211_FH_CHANMOD+(pat))
#define IEEE80211_FH_CHANSET(chan)      ((chan)/IEEE80211_FH_CHANMOD+1)
#define IEEE80211_FH_CHANPAT(chan)      ((chan)%IEEE80211_FH_CHANMOD)

/*
 * 802.11 rate set.
 */
#define IEEE80211_RATE_SIZE     8               /* 802.11 standard */
#define IEEE80211_RATE_MAXSIZE  15              /* max rates we'll handle */

struct ieee80211_rateset {
        u_int8_t                rs_nrates;
        u_int8_t                rs_rates[IEEE80211_RATE_MAXSIZE];
};

#endif /* _NET80211__IEEE80211_H_ */

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