if_ieee80211.h

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/*
 * Copyright (c) 2004 Massachusetts Institute of Technology
 * John Bicket
 */

/*
 * Originally derived from the following.
 */
/*-
 * Copyright (c) 2002-2004 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,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
 *    redistribution must be conditioned upon including a substantially
 *    similar Disclaimer requirement for further binary redistribution.
 * 3. Neither the names of the above-listed copyright holders nor the names
 *    of any contributors may 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.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
 *
 *      $Id: if_ieee80211.h,v 1.3 2005/01/20 01:06:27 jbicket Exp $
 *      $NetBSD: if_ieee80211.h,v 1.23 2002/10/15 08:51:50 onoe Exp $
 *      $FreeBSD: src/sys/net/if_ieee80211.h,v 1.8 2003/01/15 20:01:50 sam Exp $
 */

/*
 * IEEE 802.11 generic handler definitions.
 *
 * This code is derived from NetBSD code; their copyright notice follows.
 */

/*-
 * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *        This product includes software developed by the NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 FOUNDATION OR CONTRIBUTORS
 * 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.
 */

#ifndef _NET_IF_IEEE80211_H_
#define _NET_IF_IEEE80211_H_

#include <sys/queue.h>
#ifdef CONFIG_NET_WIRELESS
#include <linux/wireless.h>
#endif

#define IEEE80211_ADDR_LEN      6               /* size of 802.11 address */

/* IEEE 802.11 PLCP header */
struct ieee80211_plcp_hdr {
        u_int16_t       i_sfd;
        u_int8_t        i_signal;
        u_int8_t        i_service;
        u_int16_t       i_length;
        u_int16_t       i_crc;
} __attribute__((__packed__));

/*
 * generic definitions for IEEE 802.11 frames
 */
struct ieee80211_frame {
        u_int8_t        i_fc[2];
        u_int8_t        i_dur[2];
        u_int8_t        i_addr1[IEEE80211_ADDR_LEN];
        u_int8_t        i_addr2[IEEE80211_ADDR_LEN];
        u_int8_t        i_addr3[IEEE80211_ADDR_LEN];
        u_int8_t        i_seq[2];
        /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
        /* see below */
} __attribute__((__packed__));


struct ieee80211_qosframe {
        u_int8_t        i_fc[2];
        u_int8_t        i_dur[2];
        u_int8_t        i_addr1[IEEE80211_ADDR_LEN];
        u_int8_t        i_addr2[IEEE80211_ADDR_LEN];
        u_int8_t        i_addr3[IEEE80211_ADDR_LEN];
        u_int8_t        i_seq[2];
        u_int8_t        i_qos[2];
        /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
        /* see below */
} __attribute__((__packed__));

struct ieee80211_qoscntl {
        u_int8_t        i_qos[2];
};

struct ieee80211_frame_addr4 {
        u_int8_t        i_fc[2];
        u_int8_t        i_dur[2];
        u_int8_t        i_addr1[IEEE80211_ADDR_LEN];
        u_int8_t        i_addr2[IEEE80211_ADDR_LEN];
        u_int8_t        i_addr3[IEEE80211_ADDR_LEN];
        u_int8_t        i_seq[2];
        u_int8_t        i_addr4[IEEE80211_ADDR_LEN];
} __attribute__((__packed__));


struct ieee80211_qosframe_addr4 {
        u_int8_t        i_fc[2];
        u_int8_t        i_dur[2];
        u_int8_t        i_addr1[IEEE80211_ADDR_LEN];
        u_int8_t        i_addr2[IEEE80211_ADDR_LEN];
        u_int8_t        i_addr3[IEEE80211_ADDR_LEN];
        u_int8_t        i_seq[2];
        u_int8_t        i_addr4[IEEE80211_ADDR_LEN];
        u_int8_t        i_qos[2];
} __attribute__((__packed__));

/*
 * Management Notification Frame
 */
struct ieee80211_mnf {
        u_int8_t        mnf_category;
        u_int8_t        mnf_action;
        u_int8_t        mnf_dialog;
        u_int8_t        mnf_status;
} __attribute__((__packed__));
#define MNF_SETUP_REQ   0
#define MNF_SETUP_RESP  1
#define MNF_TEARDOWN    2

/*
 * WME/802.11e Tspec Element
 */
struct ieee80211_wme_tspec {
        u_int8_t        ts_id;
        u_int8_t        ts_len;
        u_int8_t        ts_oui[3];
        u_int8_t        ts_oui_type;
        u_int8_t        ts_oui_subtype;
        u_int8_t        ts_version;
        u_int8_t        ts_tsinfo[3];
        u_int8_t        ts_nom_msdu[2];
        u_int8_t        ts_max_msdu[2];
        u_int8_t        ts_min_svc[4];
        u_int8_t        ts_max_svc[4];
        u_int8_t        ts_inactv_intv[4];
        u_int8_t        ts_susp_intv[4];
        u_int8_t        ts_start_svc[4];
        u_int8_t        ts_min_rate[4];
        u_int8_t        ts_mean_rate[4];
        u_int8_t        ts_max_burst[4];
        u_int8_t        ts_min_phy[4];
        u_int8_t        ts_peak_rate[4];
        u_int8_t        ts_delay[4];
        u_int8_t        ts_surplus[2];
        u_int8_t        ts_medium_time[2];
} __attribute__((__packed__));

#define IEEE80211_FC0_VERSION_MASK              0x03
#define IEEE80211_FC0_VERSION_SHIFT             0
#define IEEE80211_FC0_VERSION_0                 0x00
#define IEEE80211_FC0_TYPE_MASK                 0x0c
#define IEEE80211_FC0_TYPE_SHIFT                2
#define IEEE80211_FC0_TYPE_MGT                  0x00
#define IEEE80211_FC0_TYPE_CTL                  0x04
#define IEEE80211_FC0_TYPE_DATA                 0x08

#define IEEE80211_FC0_SUBTYPE_MASK              0xf0
#define IEEE80211_FC0_SUBTYPE_SHIFT             4
/* for TYPE_MGT */
#define IEEE80211_FC0_SUBTYPE_ASSOC_REQ         0x00
#define IEEE80211_FC0_SUBTYPE_ASSOC_RESP        0x10
#define IEEE80211_FC0_SUBTYPE_REASSOC_REQ       0x20
#define IEEE80211_FC0_SUBTYPE_REASSOC_RESP      0x30
#define IEEE80211_FC0_SUBTYPE_PROBE_REQ         0x40
#define IEEE80211_FC0_SUBTYPE_PROBE_RESP        0x50
#define IEEE80211_FC0_SUBTYPE_BEACON            0x80
#define IEEE80211_FC0_SUBTYPE_ATIM              0x90
#define IEEE80211_FC0_SUBTYPE_DISASSOC          0xa0
#define IEEE80211_FC0_SUBTYPE_AUTH              0xb0
#define IEEE80211_FC0_SUBTYPE_DEAUTH            0xc0
#define IEEE80211_FC0_SUBTYPE_ACTION            0xd0
/* for TYPE_CTL */
#define IEEE80211_FC0_SUBTYPE_PS_POLL           0xa0
#define IEEE80211_FC0_SUBTYPE_RTS               0xb0
#define IEEE80211_FC0_SUBTYPE_CTS               0xc0
#define IEEE80211_FC0_SUBTYPE_ACK               0xd0
#define IEEE80211_FC0_SUBTYPE_CF_END            0xe0
#define IEEE80211_FC0_SUBTYPE_CF_END_ACK        0xf0
/* for TYPE_DATA (bit combination) */
#define IEEE80211_FC0_SUBTYPE_DATA              0x00
#define IEEE80211_FC0_SUBTYPE_CF_ACK            0x10
#define IEEE80211_FC0_SUBTYPE_CF_POLL           0x20
#define IEEE80211_FC0_SUBTYPE_CF_ACPL           0x30
#define IEEE80211_FC0_SUBTYPE_NODATA            0x40
#define IEEE80211_FC0_SUBTYPE_CFACK             0x50
#define IEEE80211_FC0_SUBTYPE_CFPOLL            0x60
#define IEEE80211_FC0_SUBTYPE_CF_ACK_CF_ACK     0x70
#define IEEE80211_FC0_SUBTYPE_QOS               0x80

#define IEEE80211_FC1_DIR_MASK                  0x03
#define IEEE80211_FC1_DIR_NODS                  0x00    /* STA->STA */
#define IEEE80211_FC1_DIR_TODS                  0x01    /* STA->AP  */
#define IEEE80211_FC1_DIR_FROMDS                0x02    /* AP ->STA */
#define IEEE80211_FC1_DIR_DSTODS                0x03    /* AP ->AP  */

#define IEEE80211_FC1_MORE_FRAG                 0x04
#define IEEE80211_FC1_RETRY                     0x08
#define IEEE80211_FC1_PWR_MGT                   0x10
#define IEEE80211_FC1_MORE_DATA                 0x20
#define IEEE80211_FC1_WEP                       0x40
#define IEEE80211_FC1_ORDER                     0x80

#define IEEE80211_SEQ_FRAG_MASK                 0x000f
#define IEEE80211_SEQ_FRAG_SHIFT                0
#define IEEE80211_SEQ_SEQ_MASK                  0xfff0
#define IEEE80211_SEQ_SEQ_SHIFT                 4

#define IEEE80211_NWID_LEN                      32

/*
 * BEACON management packets
 *
 *      octet timestamp[8]
 *      octet beacon interval[2]
 *      octet capability information[2]
 *      information element
 *              octet elemid
 *              octet length
 *              octet information[length]
 */

typedef u_int8_t *ieee80211_mgt_beacon_t;

#define IEEE80211_BEACON_INTERVAL(beacon) \
        ((beacon)[8] | ((beacon)[9] << 8))
#define IEEE80211_BEACON_CAPABILITY(beacon) \
        ((beacon)[10] | ((beacon)[11] << 8))

#define IEEE80211_CAPINFO_ESS                   0x0001
#define IEEE80211_CAPINFO_IBSS                  0x0002
#define IEEE80211_CAPINFO_CF_POLLABLE           0x0004
#define IEEE80211_CAPINFO_CF_POLLREQ            0x0008
#define IEEE80211_CAPINFO_PRIVACY               0x0010
#define IEEE80211_CAPINFO_SHORT_PREAMBLE        0x0020
#define IEEE80211_CAPINFO_PBCC                  0x0040
#define IEEE80211_CAPINFO_CHNL_AGILITY          0x0080
/* bits 8-9 are reserved */
#define IEEE80211_CAPINFO_SHORT_SLOTTIME        0x0400
/* bits 11-12 are reserved */
#define IEEE80211_CAPINFO_DSSSOFDM              0x2000
/* bits 14-15 are reserved */

/*
 * Management information elements
 */

struct ieee80211_information {
        char    ssid[IEEE80211_NWID_LEN+1];
        struct rates {
                u_int8_t        *p;
        } rates;
        struct fh {
                u_int16_t       dwell;
                u_int8_t        set;
                u_int8_t        pattern;
                u_int8_t        index;
        } fh;
        struct ds {
                u_int8_t        channel;
        } ds;
        struct cf {
                u_int8_t        count;
                u_int8_t        period;
                u_int8_t        maxdur[2];
                u_int8_t        dur[2];
        } cf;
        struct tim {
                u_int8_t        count;
                u_int8_t        period;
                u_int8_t        bitctl;
                /* u_int8_t     pvt[251]; The driver needs to use this. */
        } tim;
        struct ibss {
                u_int16_t       atim;
        } ibss;
        struct challenge {
                u_int8_t        *p;
                u_int8_t        len;
        } challenge;
        struct erp {
                u_int8_t        flags;
        } erp;
};

#define IEEE80211_ELEMID_SSID                   0
#define IEEE80211_ELEMID_RATES                  1
#define IEEE80211_ELEMID_FHPARMS                2
#define IEEE80211_ELEMID_DSPARMS                3
#define IEEE80211_ELEMID_CFPARMS                4
#define IEEE80211_ELEMID_TIM                    5
#define IEEE80211_ELEMID_IBSSPARMS              6
#define IEEE80211_ELEMID_COUNTRY                7
#define IEEE80211_ELEMID_CHALLENGE              16
#define IEEE80211_ELEMID_ERP                    42
#define IEEE80211_ELEMID_XRATES                 50
#define IEEE80211_ELEMID_VENDOR                 221
#define OUI_WME                                 0x0050f2
#define OUI_TYPE                                0x02
#define WME_PARAM_OUI_SUBTYPE                   0x01

/* Classes for WME streams */
#define WME_AC_BE 0
#define WME_AC_BK 1
#define WME_AC_VI 2
#define WME_AC_VO 3


#define IEEE80211_RATE_BASIC                    0x80
#define IEEE80211_RATE_VAL                      0x7f

/* EPR information element flags */
#define IEEE80211_ERP_NON_ERP_PRESENT           0x01
#define IEEE80211_ERP_USE_PROTECTION            0x02
#define IEEE80211_ERP_BARKER_MODE               0x04

/*
 * AUTH management packets
 *
 *      octet algo[2]
 *      octet seq[2]
 *      octet status[2]
 *      octet chal.id
 *      octet chal.length
 *      octet chal.text[253]
 */

typedef u_int8_t *ieee80211_mgt_auth_t;

#define IEEE80211_AUTH_ALGORITHM(auth) \
        ((auth)[0] | ((auth)[1] << 8))
#define IEEE80211_AUTH_TRANSACTION(auth) \
        ((auth)[2] | ((auth)[3] << 8))
#define IEEE80211_AUTH_STATUS(auth) \
        ((auth)[4] | ((auth)[5] << 8))

#define IEEE80211_AUTH_ALG_OPEN                 0x0000
#define IEEE80211_AUTH_ALG_SHARED               0x0001

#define IEEE80211_AUTH_OPEN_REQUEST             1
#define IEEE80211_AUTH_OPEN_RESPONSE            2

#define IEEE80211_AUTH_SHARED_REQUEST           1
#define IEEE80211_AUTH_SHARED_CHALLENGE         2
#define IEEE80211_AUTH_SHARED_RESPONSE          3
#define IEEE80211_AUTH_SHARED_PASS              4

/*
 * Reason codes
 *
 * Unlisted codes are reserved
 */

#define IEEE80211_REASON_UNSPECIFIED            1
#define IEEE80211_REASON_AUTH_EXPIRE            2
#define IEEE80211_REASON_AUTH_LEAVE             3
#define IEEE80211_REASON_ASSOC_EXPIRE           4
#define IEEE80211_REASON_ASSOC_TOOMANY          5
#define IEEE80211_REASON_NOT_AUTHED             6  
#define IEEE80211_REASON_NOT_ASSOCED            7
#define IEEE80211_REASON_ASSOC_LEAVE            8
#define IEEE80211_REASON_ASSOC_NOT_AUTHED       9

#define IEEE80211_STATUS_SUCCESS                0
#define IEEE80211_STATUS_UNSPECIFIED            1
#define IEEE80211_STATUS_CAPINFO                10
#define IEEE80211_STATUS_NOT_ASSOCED            11
#define IEEE80211_STATUS_OTHER                  12
#define IEEE80211_STATUS_ALG                    13
#define IEEE80211_STATUS_SEQUENCE               14
#define IEEE80211_STATUS_CHALLENGE              15
#define IEEE80211_STATUS_TIMEOUT                16
#define IEEE80211_STATUS_TOOMANY                17
#define IEEE80211_STATUS_BASIC_RATE             18
#define IEEE80211_STATUS_SP_REQUIRED            19
#define IEEE80211_STATUS_PBCC_REQUIRED          20
#define IEEE80211_STATUS_CA_REQUIRED            21
#define IEEE80211_STATUS_TOO_MANY_STATIONS      22
#define IEEE80211_STATUS_RATES                  23
#define IEEE80211_STATUS_SHORTSLOT_REQUIRED     25
#define IEEE80211_STATUS_DSSSOFDM_REQUIRED      26

#define IEEE80211_WEP_KEYLEN                    5       /* 40bit */
#define IEEE80211_WEP_IVLEN                     3       /* 24bit */
#define IEEE80211_WEP_KIDLEN                    1       /* 1 octet */
#define IEEE80211_WEP_CRCLEN                    4       /* CRC-32 */
#define IEEE80211_WEP_NKID                      4       /* number of key ids */

#define IEEE80211_CRC_LEN                       4

#define IEEE80211_MTU                           1500
#define IEEE80211_MAX_LEN                       (2300 + IEEE80211_CRC_LEN + \
    (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN))

/* 
 * RTS frame length parameters.  The default is specified in
 * the 802.11 spec.  The max may be wrong for jumbo frames.
 */
#define IEEE80211_RTS_DEFAULT                   512
#define IEEE80211_RTS_MIN                       1
#define IEEE80211_RTS_MAX                       IEEE80211_MAX_LEN

#define IEEE80211_CHAN_ANY      0xffff          /* token for ``any channel'' */

#define IEEE80211_TXPOWER_MAX   100     /* .5 dbM (XXX units?) */
#define IEEE80211_TXPOWER_MIN   0       /* kill radio */

#define IEEE80211_AUTH_NONE     0
#define IEEE80211_AUTH_OPEN     1
#define IEEE80211_AUTH_SHARED   2

#ifdef __KERNEL__

#define IEEE80211_PSCAN_WAIT    5               /* passive scan wait */
#define IEEE80211_TRANS_WAIT    5               /* transition wait */
#define IEEE80211_INACT_WAIT    5               /* inactivity timer interval */
#define IEEE80211_INACT_MAX     (300/IEEE80211_INACT_WAIT)

/*
 * Structure for IEEE 802.11 drivers.
 */

#define IEEE80211_CHAN_MAX      255
#define IEEE80211_CHAN_ANYC \
        ((struct ieee80211channel *) IEEE80211_CHAN_ANY)

#define IEEE80211_RATE_SIZE     8               /* 802.11 standard */
#define IEEE80211_RATE_MAXSIZE  15              /* max rates we'll handle */
#define IEEE80211_KEYBUF_SIZE   16
#define IEEE80211_NODE_HASHSIZE 32
/* simple hash is enough for variation of macaddr */
#define IEEE80211_NODE_HASH(addr)       \
        (((u_int8_t *)(addr))[IEEE80211_ADDR_LEN - 1] % IEEE80211_NODE_HASHSIZE)

typedef TAILQ_HEAD(, ieee80211_node) IEEE80211_NODE_LIST;

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_TURBO    = 4,    /* 5GHz, OFDM, 2x clock */
};
#define IEEE80211_MODE_MAX      (IEEE80211_MODE_TURBO+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     /* Receive-only monitor mode */
};

enum ieee80211_state {
        IEEE80211_S_INIT,               /* default state */
        IEEE80211_S_SCAN,               /* scanning */
        IEEE80211_S_AUTH,               /* try to authenticate */
        IEEE80211_S_ASSOC,              /* try to assoc */
        IEEE80211_S_RUN                 /* associated */
};

/*
 * WME information element
 */
struct wme_ie {
        u_int8_t        wme_oui[3];
        u_int8_t        wme_oui_type;
        u_int8_t        wme_oui_subtype;
        u_int8_t        wme_version;
        u_int8_t        wme_info;
} __attribute__((__packed__));

/*
 * WME parameters
 */
struct wme_param_element {
        u_int8_t        aifsn;
        u_int8_t        cwminmax;
        u_int8_t txoplimit;
};

/*
 * Channels are specified by frequency and attributes.
 */
/* XXX should be ieee80211_channel but NetBSD took that for an ioctl param */
struct ieee80211channel {
        u_int16_t       ic_freq;        /* setting in Mhz */
        u_int16_t       ic_flags;       /* see below */
};

/* 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_XR      0x0800  /* XR channel */
/*
 * Useful combinations of channel characteristics.
 */
#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_X \
        (IEEE80211_CHAN_5GHZ|IEEE80211_CHAN_OFDM|IEEE80211_CHAN_XR)

#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_X(_c) \
        (((_c)->ic_flags & IEEE80211_CHAN_T) == IEEE80211_CHAN_X)

#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)

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

/* Number of history entries to keep (per node) */
#define IEEE80211_RECV_HIST_LEN         16
#define IEEE80211_JIFFIES_NONE          ((ulong)(~0))

struct ieee80211_recv_hist {
        ulong           hi_jiffies;     /* kernel timestamp */
        u_int8_t        hi_rssi;        /* recv ssi */
        u_int32_t       hi_rstamp;      /* recv timestamp */
        u_int8_t        hi_rantenna;    /* recv antenna */
};


/* ni_flags */
#define IEEE80211_N_QOSDATA     0x00000001      /* STATUS: qos data frames enabled */

/* 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)

struct ieee80211_wepkey {
        int                     wk_len;
        u_int8_t                wk_key[IEEE80211_KEYBUF_SIZE];
};

struct proc_dir_entry;

#define IEEE80211_ADDR_EQ(a1,a2)        (memcmp(a1,a2,IEEE80211_ADDR_LEN) == 0)
#define IEEE80211_ADDR_COPY(dst,src)    memcpy(dst,src,IEEE80211_ADDR_LEN)

#define IEEE80211_IS_MULTICAST(a)       ETHER_IS_MULTICAST(a)

/* ic_flags */
#define IEEE80211_F_ASCAN       0x00000001      /* STATUS: active scan */
#define IEEE80211_F_SIBSS       0x00000002      /* STATUS: start IBSS */
#define IEEE80211_F_WEPON       0x00000100      /* CONF: WEP enabled */
#define IEEE80211_F_IBSSON      0x00000200      /* CONF: IBSS creation enable */
#define IEEE80211_F_PMGTON      0x00000400      /* CONF: Power mgmt enable */
#define IEEE80211_F_DESBSSID    0x00000800      /* CONF: des_bssid is set */
#define IEEE80211_F_SCANAP      0x00001000      /* CONF: Scanning AP */
#define IEEE80211_F_ROAMING     0x00002000      /* CONF: roaming enabled */
#define IEEE80211_F_SWRETRY     0x00004000      /* CONF: sw tx retry enabled */
#define IEEE80211_F_TXPMGT      0x00018000      /* STATUS: tx power */
#define IEEE80211_F_TXPOW_OFF   0x00000000      /* TX Power: radio disabled */
#define IEEE80211_F_TXPOW_FIXED 0x00008000      /* TX Power: fixed rate */
#define IEEE80211_F_TXPOW_AUTO  0x00010000      /* TX Power: undefined */
#define IEEE80211_F_SHSLOT      0x00020000      /* CONF: short slot time */
#define IEEE80211_F_SHPREAMBLE  0x00040000      /* CONF: short preamble */
#define IEEE80211_F_DATAPAD     0x00080000      /* CONF: needs data alignment pad */

/* ic_capabilities */
#define IEEE80211_C_WEP         0x00000001      /* CAPABILITY: WEP available */
#define IEEE80211_C_IBSS        0x00000002      /* CAPABILITY: IBSS available */
#define IEEE80211_C_PMGT        0x00000004      /* CAPABILITY: Power mgmt */
#define IEEE80211_C_HOSTAP      0x00000008      /* CAPABILITY: HOSTAP avail */
#define IEEE80211_C_AHDEMO      0x00000010      /* CAPABILITY: Old Adhoc Demo */
#define IEEE80211_C_SWRETRY     0x00000020      /* CAPABILITY: sw tx retry */
#define IEEE80211_C_TXPMGT      0x00000040      /* CAPABILITY: tx power mgmt */
#define IEEE80211_C_SHSLOT      0x00000080      /* CAPABILITY: short slottime */
#define IEEE80211_C_SHPREAMBLE  0x00000100      /* CAPABILITY: short preamble */
#define IEEE80211_C_MONITOR     0x00000200      /* CAPABILITY: Monitor Mode   */
#ifdef SOFTLED
#define IEEE80211_C_SOFTLED     0x00100000      /* CAPABILITY: Software LED */
#endif

/* flags for ieee80211_fix_rate() */
#define IEEE80211_F_DOSORT      0x00000001      /* sort rate list */
#define IEEE80211_F_DOFRATE     0x00000002      /* use fixed rate */
#define IEEE80211_F_DONEGO      0x00000004      /* calc negotiated rate */
#define IEEE80211_F_DODEL       0x00000008      /* delete ignore rate */

/* private extensions to netdevice.h's netif_msg* mechanism */
#define NETIF_MSG_DEBUG         0x80000000      /* IFF_DEBUG equivalent */
#define NETIF_MSG_LINK2         0x40000000      /* IFF_LINK2 equivalant */
#define netif_msg_debug(p)      ((p)->msg_enable & NETIF_MSG_DEBUG)
#define netif_msg_dumppkts(p) \
        (((p)->msg_enable & (NETIF_MSG_DEBUG|NETIF_MSG_LINK2)) == \
                (NETIF_MSG_DEBUG|NETIF_MSG_LINK2))

#ifdef SOFTLED
#define POLL_EVENT 1                            /* Poll event for LED update */
#define TRANSMIT_EVENT 2                        /* xmit event for LED update */
#define RECEIVE_EVENT 3                         /* rcv event for LED update */
#endif

#endif /* __KERNEL__ */

#endif /* _NET_IF_IEEE80211_H_ */

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