/*	$OpenBSD: ieee80211.h,v 1.58 2016/05/12 18:18:48 dcoppa Exp $	*/
/*	$NetBSD: ieee80211.h,v 1.6 2004/04/30 23:51:53 dyoung Exp $	*/

/*-
 * Copyright (c) 2001 Atsushi Onoe
 * Copyright (c) 2002, 2003 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.
 *
 * 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.
 */
#ifndef _NET80211_IEEE80211_H_
#define _NET80211_IEEE80211_H_

/*
 * 802.11 protocol definitions.
 */

#define IEEE80211_ADDR_LEN	6	/* size of 802.11 address */
/* is 802.11 address multicast/broadcast? */
#define IEEE80211_IS_MULTICAST(_a)	(*(_a) & 0x01)

/*
 * 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];
} __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];
} __packed;

struct ieee80211_htframe {		/* 11n */
	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];
	u_int8_t	i_ht[4];
} __packed;

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];
} __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];
} __packed;

struct ieee80211_htframe_addr4 {	/* 11n */
	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];
	u_int8_t	i_ht[4];
} __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
#define IEEE80211_FC0_SUBTYPE_ACTION_NOACK	0xe0	/* 11n */
/* for TYPE_CTL */
#define IEEE80211_FC0_SUBTYPE_WRAPPER		0x70	/* 11n */
#define IEEE80211_FC0_SUBTYPE_BAR		0x80
#define IEEE80211_FC0_SUBTYPE_BA		0x90
#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_PROTECTED			0x40
#define	IEEE80211_FC1_WEP			0x40	/* pre-RSNA compat */
#define	IEEE80211_FC1_ORDER			0x80
#define IEEE80211_FC1_BITS					\
	"\20\03MORE_FRAG\04RETRY\05PWR_MGT\06MORE_DATA"		\
	"\07PROTECTED\08ORDER"

/*
 * Sequence Control field (see 802.11-2012 8.2.4.4).
 */
#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
#define IEEE80211_MMIE_LEN			18	/* 11w */

/*
 * QoS Control field (see 802.11-2012 8.2.4.5).
 */
#define IEEE80211_QOS_TXOP			0xff00
#define IEEE80211_QOS_AMSDU			0x0080	/* 11n */
#define IEEE80211_QOS_ACK_POLICY_NORMAL		0x0000
#define IEEE80211_QOS_ACK_POLICY_NOACK		0x0020
#define IEEE80211_QOS_ACK_POLICY_NOEXPLACK	0x0040
#define IEEE80211_QOS_ACK_POLICY_BA		0x0060
#define IEEE80211_QOS_ACK_POLICY_MASK		0x0060
#define IEEE80211_QOS_ACK_POLICY_SHIFT		5
#define IEEE80211_QOS_EOSP			0x0010
#define IEEE80211_QOS_TID			0x000f

/*
 * Control frames.
 */
struct ieee80211_frame_min {
	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];
	/* FCS */
} __packed;

struct ieee80211_frame_rts {
	u_int8_t	i_fc[2];
	u_int8_t	i_dur[2];
	u_int8_t	i_ra[IEEE80211_ADDR_LEN];
	u_int8_t	i_ta[IEEE80211_ADDR_LEN];
	/* FCS */
} __packed;

struct ieee80211_frame_cts {
	u_int8_t	i_fc[2];
	u_int8_t	i_dur[2];
	u_int8_t	i_ra[IEEE80211_ADDR_LEN];
	/* FCS */
} __packed;

struct ieee80211_frame_ack {
	u_int8_t	i_fc[2];
	u_int8_t	i_dur[2];
	u_int8_t	i_ra[IEEE80211_ADDR_LEN];
	/* FCS */
} __packed;

struct ieee80211_frame_pspoll {
	u_int8_t	i_fc[2];
	u_int8_t	i_aid[2];
	u_int8_t	i_bssid[IEEE80211_ADDR_LEN];
	u_int8_t	i_ta[IEEE80211_ADDR_LEN];
	/* FCS */
} __packed;

struct ieee80211_frame_cfend {		/* NB: also CF-End+CF-Ack */
	u_int8_t	i_fc[2];
	u_int8_t	i_dur[2];	/* should be zero */
	u_int8_t	i_ra[IEEE80211_ADDR_LEN];
	u_int8_t	i_bssid[IEEE80211_ADDR_LEN];
	/* FCS */
} __packed;

#ifdef _KERNEL
static __inline int
ieee80211_has_seq(const struct ieee80211_frame *wh)
{
	return (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) !=
	    IEEE80211_FC0_TYPE_CTL;
}

static __inline int
ieee80211_has_addr4(const struct ieee80211_frame *wh)
{
	return (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) ==
	    IEEE80211_FC1_DIR_DSTODS;
}

static __inline int
ieee80211_has_qos(const struct ieee80211_frame *wh)
{
	return (wh->i_fc[0] &
	    (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_QOS)) ==
	    (IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_QOS);
}

static __inline int
ieee80211_has_htc(const struct ieee80211_frame *wh)
{
	return (wh->i_fc[1] & IEEE80211_FC1_ORDER) &&
	    (ieee80211_has_qos(wh) ||
	     (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
	     IEEE80211_FC0_TYPE_MGT);
}

static __inline u_int16_t
ieee80211_get_qos(const struct ieee80211_frame *wh)
{
	const u_int8_t *frm;

	if (ieee80211_has_addr4(wh))
		frm = ((const struct ieee80211_qosframe_addr4 *)wh)->i_qos;
	else
		frm = ((const struct ieee80211_qosframe *)wh)->i_qos;

	return letoh16(*(const u_int16_t *)frm);
}
#endif	/* _KERNEL */

/*
 * Capability Information field (see 802.11-2012 8.4.1.4).
 */
#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
#define IEEE80211_CAPINFO_SPECTRUM_MGMT		0x0100
#define IEEE80211_CAPINFO_QOS			0x0200
#define	IEEE80211_CAPINFO_SHORT_SLOTTIME	0x0400
#define	IEEE80211_CAPINFO_APSD			0x0800
#define	IEEE80211_CAPINFO_RADIO_MEASUREMENT	0x1000
#define	IEEE80211_CAPINFO_DSSSOFDM		0x2000
#define IEEE80211_CAPINFO_DELAYED_B_ACK		0x4000
#define IEEE80211_CAPINFO_IMMEDIATE_B_ACK	0x8000
#define IEEE80211_CAPINFO_BITS					\
	"\10\01ESS\02IBSS\03CF_POLLABLE\04CF_POLLREQ"		\
	"\05PRIVACY\06SHORT_PREAMBLE\07PBCC\10CHNL_AGILITY"	\
	"\11SPECTRUM_MGMT\12QOS\13SHORT_SLOTTIME\14APSD"	\
	"\15RADIO_MEASUREMENT\16DSSSOFDM\17DELAYED_B_ACK\20IMMEDIATE_B_ACK"

/*
 * Information element IDs (see 802.11-2012 Table 8.4.2).
 */
enum {
	IEEE80211_ELEMID_SSID			= 0,
	IEEE80211_ELEMID_RATES			= 1,
	IEEE80211_ELEMID_FHPARMS		= 2,
	IEEE80211_ELEMID_DSPARMS		= 3,
	IEEE80211_ELEMID_CFPARMS		= 4,
	IEEE80211_ELEMID_TIM			= 5,
	IEEE80211_ELEMID_IBSSPARMS		= 6,
	IEEE80211_ELEMID_COUNTRY		= 7,
	IEEE80211_ELEMID_HOPPING_PARMS		= 8,
	IEEE80211_ELEMID_HOPPING_PATTERN	= 9,
	IEEE80211_ELEMID_REQUEST		= 10,
	IEEE80211_ELEMID_QBSS_LOAD		= 11,
	IEEE80211_ELEMID_EDCAPARMS		= 12,
	IEEE80211_ELEMID_TSPEC			= 13,
	IEEE80211_ELEMID_TCLASS			= 14,
	IEEE80211_ELEMID_SCHEDULE		= 15,
	IEEE80211_ELEMID_CHALLENGE		= 16,
	/* 17-31 reserved for challenge text extension */
	IEEE80211_ELEMID_POWER_CONSTRAINT	= 32,
	IEEE80211_ELEMID_POWER_CAP		= 33,
	IEEE80211_ELEMID_TPC_REQUEST		= 34,
	IEEE80211_ELEMID_TPC_REPORT		= 35,
	IEEE80211_ELEMID_SUPP_CHNLS		= 35,
	IEEE80211_ELEMID_CSA			= 37,	/* 11h */
	IEEE80211_ELEMID_MEASUREMENT_REQUEST	= 38,	/* DFS */
	IEEE80211_ELEMID_MEASUREMENT_REPORT	= 39,	/* DFS */
	IEEE80211_ELEMID_QUIET			= 40,
	IEEE80211_ELEMID_IBSS_DFS		= 41,
	IEEE80211_ELEMID_ERP			= 42,
	IEEE80211_ELEMID_TS_DELAY		= 43,
	IEEE80211_ELEMID_TCLAS			= 44,
	IEEE80211_ELEMID_HTCAPS			= 45,	/* 11n */
	IEEE80211_ELEMID_QOS_CAP		= 46,
	/* 47 reserved */
	IEEE80211_ELEMID_RSN			= 48,
	/* 49 reserved */
	IEEE80211_ELEMID_XRATES			= 50,
	IEEE80211_ELEMID_AP_CHNL_REPORT		= 51,
	IEEE80211_ELEMID_NBR_REPORT		= 52,
	IEEE80211_ELEMID_RCPI			= 53,
	IEEE80211_ELEMID_MDE			= 54,
	IEEE80211_ELEMID_FTE			= 55,
	IEEE80211_ELEMID_TIE			= 56,	/* 11r */
	IEEE80211_ELEMID_RDE			= 57,
	IEEE80211_ELEMID_DSE			= 58,
	IEEE80211_ELEMID_SUPP_OPCLASS		= 59,
	IEEE80211_ELEMID_XCSA			= 60,
	IEEE80211_ELEMID_HTOP			= 61,	/* 11n */
	IEEE80211_ELEMID_SECONDARY_CHANL_OFFSET	= 62,	/* 11n */
	IEEE80211_ELEMID_AVG_ACCESS_DELAY	= 63,
	IEEE80211_ELEMID_ANTENNA		= 64,
	IEEE80211_ELEMID_RSNI			= 65,
	IEEE80211_ELEMID_MEASUREMENT_PILOT_TX	= 66,
	IEEE80211_ELEMID_AVAIL_CAPACITY		= 67,
	IEEE80211_ELEMID_AC_ACCESS_DELAY	= 68,
	IEEE80211_ELEMID_TIME_ADVERT		= 69,
	IEEE80211_ELEMID_RM			= 70,
	IEEE80211_ELEMID_MULTI_BSSID		= 71,
	IEEE80211_ELEMID_20_40_CBW_COEX		= 72,	/* 11n */
	IEEE80211_ELEMID_20_40_CBW_INTOLERANT	= 73,	/* 11n */
	IEEE80211_ELEMID_SCAN_PARAM_OVERLAP	= 74,
	IEEE80211_ELEMID_RIC			= 75,
	IEEE80211_ELEMID_MMIE			= 76,	/* 11w */
	IEEE80211_ELEMID_EVENT_REQUEST		= 78,
	IEEE80211_ELEMID_EVENT_REPORT		= 79,
	IEEE80211_ELEMID_DIAG_REQUEST		= 80,
	IEEE80211_ELEMID_DIAG_REPORT		= 81,
	IEEE80211_ELEMID_LOCATION_PARMS		= 82,
	IEEE80211_ELEMID_NONTX_BSSID		= 83,
	IEEE80211_ELEMID_SSID_LIST		= 84,
	IEEE80211_ELEMID_MULTI_BSSID_IDX	= 85,
	IEEE80211_ELEMID_FMS_DESC		= 86,
	IEEE80211_ELEMID_FMS_REQUEST		= 87,
	IEEE80211_ELEMID_FMS_RESPONSE		= 88,
	IEEE80211_ELEMID_QOS_TRAFFIC_CAP	= 89,
	IEEE80211_ELEMID_MAX_IDLE_PERIOD	= 90,
	IEEE80211_ELEMID_TFS_REQUEST		= 91,
	IEEE80211_ELEMID_TFS_RESPONSE		= 92,
	IEEE80211_ELEMID_WNM_SLEEP		= 93,
	IEEE80211_ELEMID_TIM_BCAST_REQUEST	= 94,
	IEEE80211_ELEMID_TIM_BCAST_RESPONSE	= 95,
	IEEE80211_ELEMID_INTERFERENCE_REPORT	= 96,
	IEEE80211_ELEMID_CHNL_USAGE		= 97,
	IEEE80211_ELEMID_TIME_ZONE		= 98,
	IEEE80211_ELEMID_DMS_REQUEST		= 99,
	IEEE80211_ELEMID_DMS_RESPONSE		= 100,
	IEEE80211_ELEMID_LINK_ID		= 101,
	IEEE80211_ELEMID_WAKE_SCHED		= 102,
	/* 103 undefined */
	IEEE80211_ELEMID_CHNL_SWITCH_TIMING	= 104,
	IEEE80211_ELEMID_PTI_CTRL		= 105,
	IEEE80211_ELEMID_TPU_BUF_STATUS		= 106,
	IEEE80211_ELEMID_INTERWORKING		= 107,
	IEEE80211_ELEMID_ADVERT_PROTOCOL	= 108,
	IEEE80211_ELEMID_EXPEDITED_BW_REQUEST	= 109,
	IEEE80211_ELEMID_QOS_MAP_SET		= 110,
	IEEE80211_ELEMID_ROAMING_CONSORTIUM	= 111,
	IEEE80211_ELEMID_EMERGENCY_ALERT_ID	= 112,
	IEEE80211_ELEMID_MESHCONF		= 113,
	IEEE80211_ELEMID_MESHID			= 114,
	IEEE80211_ELEMID_MESHLINK		= 115,
	IEEE80211_ELEMID_MESHCNGST		= 116,
	IEEE80211_ELEMID_MESHPEER		= 117,
	IEEE80211_ELEMID_MESHCSA		= 118,
	IEEE80211_ELEMID_MESHAWAKEW		= 119,
	IEEE80211_ELEMID_MESHBEACONT		= 120,
	IEEE80211_ELEMID_MCCAOP_SETUP_REQUEST	= 121,
	IEEE80211_ELEMID_MCCAOP_SETUP_REPLY	= 122,
	IEEE80211_ELEMID_MCCAOP_ADVERT		= 123,
	IEEE80211_ELEMID_MCCAOP_TEARDOWN	= 124,
	IEEE80211_ELEMID_MESHGANN		= 125,
	IEEE80211_ELEMID_MESHRANN		= 126,
	IEEE80211_ELEMID_XCAPS			= 127,
	/* 128-129 reserved */
	IEEE80211_ELEMID_MESHPREQ		= 130,
	IEEE80211_ELEMID_MESHPREP		= 131,
	IEEE80211_ELEMID_MESHPERR		= 132,
	/* 133-136 reserved */
	IEEE80211_ELEMID_MESHPXU		= 137,
	IEEE80211_ELEMID_MESHPXUC		= 138,
	IEEE80211_ELEMID_AUTH_MESH_PEERING_XCHG	= 139,
	IEEE80211_ELEMID_MIC			= 140,
	IEEE80211_ELEMID_DEST_URI		= 141,
	IEEE80211_ELEMID_U_APSD_COEX		= 142,
	/* 143-174 reserved */
	IEEE80211_ELEMID_MCCAOP_ADVERT_OVIEW	= 174,
	/* 175-220 reserved */
	IEEE80211_ELEMID_VENDOR			= 221	/* vendor private */
	/* 222-255 reserved */
};

/*
 * Action field category values (see 802.11-2012 8.4.1.11 Table 8-38).
 */
enum {
	IEEE80211_CATEG_SPECTRUM		= 0,
	IEEE80211_CATEG_QOS			= 1,
	IEEE80211_CATEG_DLS			= 2,
	IEEE80211_CATEG_BA			= 3,
	IEEE80211_CATEG_PUB			= 4,
	IEEE80211_CATEG_RADIO_MSRMNT		= 5,
	IEEE80211_CATEG_FAST_BSS_TRANS		= 6,
	IEEE80211_CATEG_HT			= 7,	/* 11n */
	IEEE80211_CATEG_SA_QUERY		= 8,	/* 11w */
	IEEE80211_CATEG_PROT_DUAL_PUBLIC_ACTION	= 9,
	IEEE80211_CATEG_WNM			= 10,
	IEEE80211_CATEG_UNPROT_WNM		= 11,
	IEEE80211_CATEG_TDLS			= 12,
	IEEE80211_CATEG_MESH			= 13,
	IEEE80211_CATEG_MULTIHOP		= 14,
	IEEE80211_CATEG_SELF_PROT		= 15,
	/* 16-125 reserved */
	IEEE80211_CATEG_PROT_VENDOR		= 126,
	IEEE80211_CATEG_VENDOR			= 127
	/* 128-255 error */
};

/*
 * Block Ack Action field values (see 802.11-2012 8.5.5 Table 8-202).
 */
#define IEEE80211_ACTION_ADDBA_REQ	0
#define IEEE80211_ACTION_ADDBA_RESP	1
#define IEEE80211_ACTION_DELBA		2
/* 3-255 reserved */

/*
 * SA Query Action field values (see 802.11-2012 8.5.10 Table 8-227).
 */
#define IEEE80211_ACTION_SA_QUERY_REQ	0
#define IEEE80211_ACTION_SA_QUERY_RESP	1

/*
 * HT Action field values (see 802.11-2012 8.5.12 Table 8-229).
 */
#define IEEE80211_ACTION_NOTIFYCW		0
#define IEEE80211_ACTION_SM_PWRSAVE		1
#define IEEE80211_ACTION_PSMP			2
#define IEEE80211_ACTION_SET_PCO_PHASE		3
#define IEEE80211_ACTION_CSI			4
#define IEEE80211_ACTION_NONCOMPRESSED_BF	5
#define IEEE80211_ACTION_COMPRESSED_BF		6
#define IEEE80211_ACTION_ASEL_IDX_FEEDBACK	7
/* 8-255 reserved */

#define	IEEE80211_RATE_BASIC			0x80
#define	IEEE80211_RATE_VAL			0x7f
#define	IEEE80211_RATE_SIZE			8	/* 802.11 standard */
#define	IEEE80211_RATE_MAXSIZE			15	/* max rates we'll handle */

#define	IEEE80211_HT_NUM_MCS			77

/*
 * BlockAck/BlockAckReq Control field (see 802.11-2012 8.3.1.9 Figure 8-25).
 */
#define IEEE80211_BA_ACK_POLICY		0x0001
#define IEEE80211_BA_MULTI_TID		0x0002
#define IEEE80211_BA_COMPRESSED		0x0004
#define IEEE80211_BA_TID_INFO_MASK	0xf000
#define IEEE80211_BA_TID_INFO_SHIFT	12

/*
 * ADDBA Parameter Set field (see 802.11-2012 8.4.1.14 Figure 8-48).
 */
#define IEEE80211_ADDBA_AMSDU		0x0001 /* A-MSDU in A-MPDU supported */
#define IEEE80211_ADDBA_BA_POLICY	0x0002 /* 1=immediate BA 0=delayed BA */
#define IEEE80211_ADDBA_TID_MASK	0x003c
#define IEEE80211_ADDBA_TID_SHIFT	2
#define IEEE80211_ADDBA_BUFSZ_MASK	0xffc0
#define IEEE80211_ADDBA_BUFSZ_SHIFT	6

/*
 * DELBA Parameter Set field (see 802.11-2012 8.4.1.16 Figure 8-50).
 */
#define IEEE80211_DELBA_INITIATOR	0x0800
#define IEEE80211_DELBA_TID_INFO_MASK	0xf000
#define IEEE80211_DELBA_TID_INFO_SHIFT	12

/*
 * ERP information element parameters (see 802.11-2012 8.4.2.14 Figure 8-95).
 */
#define	IEEE80211_ERP_NON_ERP_PRESENT		0x01
#define	IEEE80211_ERP_USE_PROTECTION		0x02
#define	IEEE80211_ERP_BARKER_MODE		0x04

/*
 * RSN capabilities (see 802.11-2012 8.4.2.27.4).
 */
#define IEEE80211_RSNCAP_PREAUTH		0x0001
#define IEEE80211_RSNCAP_NOPAIRWISE		0x0002
#define IEEE80211_RSNCAP_PTKSA_RCNT_MASK	0x000c
#define IEEE80211_RSNCAP_PTKSA_RCNT_SHIFT	2
#define IEEE80211_RSNCAP_GTKSA_RCNT_MASK	0x0030
#define IEEE80211_RSNCAP_GTKSA_RCNT_SHIFT	4
#define IEEE80211_RSNCAP_RCNT1			0
#define IEEE80211_RSNCAP_RCNT2			1
#define IEEE80211_RSNCAP_RCNT4			2
#define IEEE80211_RSNCAP_RCNT16			3
#define IEEE80211_RSNCAP_MFPR			0x0040	/* 11w */
#define IEEE80211_RSNCAP_MFPC			0x0080	/* 11w */
#define IEEE80211_RSNCAP_PEERKEYENA		0x0200
#define IEEE80211_RSNCAP_SPPAMSDUC		0x0400	/* 11n */
#define IEEE80211_RSNCAP_SPPAMSDUR		0x0800	/* 11n */
#define IEEE80211_RSNCAP_PBAC			0x1000	/* 11n */
#define IEEE80211_RSNCAP_EXTENDED_KEYID		0x2000

/*
 * HT Capabilities Info (see 802.11-2012 8.4.2.58.2).
 */
#define IEEE80211_HTCAP_LDPC		0x00000001
#define IEEE80211_HTCAP_CBW20_40	0x00000002
#define IEEE80211_HTCAP_SMPS_MASK	0x0000000c
#define IEEE80211_HTCAP_SMPS_SHIFT	2
#define IEEE80211_HTCAP_SMPS_STA	0
#define IEEE80211_HTCAP_SMPS_DYN	1
#define IEEE80211_HTCAP_SMPS_DIS	3
#define IEEE80211_HTCAP_GF		0x00000010
#define IEEE80211_HTCAP_SGI20		0x00000020
#define IEEE80211_HTCAP_SGI40		0x00000040
#define IEEE80211_HTCAP_TXSTBC		0x00000080
#define IEEE80211_HTCAP_RXSTBC_MASK	0x00000300
#define IEEE80211_HTCAP_RXSTBC_SHIFT	8
#define IEEE80211_HTCAP_DELAYEDBA	0x00000400
#define IEEE80211_HTCAP_AMSDU7935	0x00000800
#define IEEE80211_HTCAP_DSSSCCK40	0x00001000
#define IEEE80211_HTCAP_PSMP		0x00002000
#define IEEE80211_HTCAP_40INTOLERANT	0x00004000
#define IEEE80211_HTCAP_LSIGTXOPPROT	0x00008000

/*
 * HT A-MPDU parameters (see 802.11-2012 8.4.2.58.3).
 */
#define IEEE80211_AMPDU_PARAM_LE	0x03
#define IEEE80211_AMPDU_PARAM_SS	0x1c
#define IEEE80211_AMPDU_PARAM_SS_NONE	(0 << 2)
#define IEEE80211_AMPDU_PARAM_SS_0_25	(1 << 2)
#define IEEE80211_AMPDU_PARAM_SS_0_5	(2 << 2)
#define IEEE80211_AMPDU_PARAM_SS_1	(3 << 2)
#define IEEE80211_AMPDU_PARAM_SS_2	(4 << 2)
#define IEEE80211_AMPDU_PARAM_SS_4	(5 << 2)
#define IEEE80211_AMPDU_PARAM_SS_8	(6 << 2)
#define IEEE80211_AMPDU_PARAM_SS_16	(7 << 2)
/* bits 5-7 reserved */

/*
 * HT Supported MCS Set (see 802.11-2012 8.4.2.58.4).
 * This field is 16 bytes in size. Bitmasks given below
 * operate on 8 or 16 bit integer subsets of this field
 * for use with ieee80211com and ieee80211_node.
 */
/* Bits 0-76: Supported Rx MCS bitmask */
/* Bits 77-79: Reserved */
/* Bits 80-89: Highest Rx rate in units of 1MB/s */
#define IEEE80211_MCS_RX_RATE_HIGH	0x03ff
/* Bits 90-95: Reserved */
/* Bits 96-100: Tx MCS set */
#define IEEE80211_TX_MCS_SET_DEFINED		0x01
#define IEEE80211_TX_RX_MCS_NOT_EQUAL		0x02
#define IEEE80211_TX_SPATIAL_STREAMS		0x18
#define IEEE80211_TX_UNEQUAL_MODULATION		0x20
/* Bits 101-127: Reserved */

/*
 * HT Extended Capabilities (see 802.11-2012 8.4.2.58.5).
 */
#define IEEE80211_HTXCAP_PCO		0x0001
#define IEEE80211_HTXCAP_PCOTT_MASK	0x0006
#define IEEE80211_HTXCAP_PCOTT_SHIFT	1
#define IEEE80211_HTXCAP_PCOTT_400	1
#define IEEE80211_HTXCAP_PCOTT_1500	2
#define IEEE80211_HTXCAP_PCOTT_5000	3
/* Bits 3-7 are reserved. */
#define IEEE80211_HTXCAP_MFB_MASK	0x0300
#define IEEE80211_HTXCAP_MFB_SHIFT	8
#define IEEE80211_HTXCAP_MFB_NONE	0
#define IEEE80211_HTXCAP_MFB_UNSOL	2
#define IEEE80211_HTXCAP_MFB_BOTH	3
#define IEEE80211_HTXCAP_HTC		0x0400
#define IEEE80211_HTXCAP_RDRESP		0x0800
/* Bits 12-15 are reserved. */

/*
 * Transmit Beamforming (TxBF) Capabilities (see 802.11-2012 8.4.2.58.6).
 */
#define IEEE80211_TXBFCAP_IMPLICIT_RX			0x00000001
#define IEEE80211_TXBFCAP_RSSC				0x00000002
#define IEEE80211_TXBFCAP_TSSC				0x00000004
#define IEEE80211_TXBFCAP_RNDP				0x00000008
#define IEEE80211_TXBFCAP_TNDP				0x00000010
#define IEEE80211_TXBFCAP_IMPLICIT_TX			0x00000020
#define IEEE80211_TXBFCAP_CALIB_MASK			0x000000c0
#define IEEE80211_TXBFCAP_CALIB_SHIFT			6
#define IEEE80211_TXBFCAP_TX_CSI			0x00000100
#define IEEE80211_TXBFCAP_EXPLICIT_NSC			0x00000200
#define IEEE80211_TXBFCAP_EXPLICIT_CSC			0x00000400
#define IEEE80211_TXBFCAP_CSI_FB_DELAYED		0x00000800
#define IEEE80211_TXBFCAP_CSI_FB_IMMEDIATE		0x00001000
#define IEEE80211_TXBFCAP_EXPLICIT_NB_FB_DELAYED	0x00002000
#define IEEE80211_TXBFCAP_EXPLICIT_NB_FB_IMMEDIATE	0x00004000
#define IEEE80211_TXBFCAP_EXPLICIT_CB_FB_DELAYED	0x00008000
#define IEEE80211_TXBFCAP_EXPLICIT_CB_FB_IMMEDIATE	0x00010000
#define IEEE80211_TXBFCAP_MINIMAL_GROUPING_1_2		0x00020000
#define IEEE80211_TXBFCAP_MINIMAL_GROUPING_1_4		0x00040000
#define IEEE80211_TXBFCAP_CSI_NUM_ANT_MASK		0x00180000
#define IEEE80211_TXBFCAP_CSI_NUM_ANT_SHIFT		19
#define IEEE80211_TXBFCAP_NS_NUM_ANT_MASK		0x00600000
#define IEEE80211_TXBFCAP_NS_NUM_ANT_SHIFT		21
#define IEEE80211_TXBFCAP_CS_NUM_ANT_MASK		0x01800000
#define IEEE80211_TXBFCAP_CS_NUM_ANT_SHIFT		23
#define IEEE80211_TXBFCAP_CSI_NUM_ROWS_MASK		0x06000000
#define IEEE80211_TXBFCAP_CSI_NUM_ROWS_SHIFT		25
#define IEEE80211_TXBFCAP_CHANL_ESTIMATE_MASK		0x18000000
#define IEEE80211_TXBFCAP_CHANL_ESTIMATE_SHIFT		27

/*
 * Antenna Selection (ASEL) Capability (see 802.11-2012 8.4.2.58.7).
 */
#define IEEE80211_ASELCAP_ASEL		0x01
#define IEEE80211_ASELCAP_CSIFB_TX	0x02
#define IEEE80211_ASELCAP_ANT_IDX_FB_TX	0x04
#define IEEE80211_ASELCAP_CSIFB		0x08
#define IEEE80211_ASELCAP_ANT_IDX_FB	0x10
#define IEEE80211_ASELCAP_ASEL_RX	0x20
#define IEEE80211_ASELCAP_TX_SOUND_PPDU	0x20
/* Bit 7 is reserved. */

/*
 * HT Operation element (see 802.11-2012 8.4.2.59).
 */
/* Byte 0 contains primary channel number. */
/* Byte 1. */
#define IEEE80211_HTOP0_SCO_MASK	0x03
#define IEEE80211_HTOP0_SCO_SHIFT	0
#define IEEE80211_HTOP0_SCO_SCN		0
#define IEEE80211_HTOP0_SCO_SCA		1
#define IEEE80211_HTOP0_SCO_SCB		3
#define IEEE80211_HTOP0_CHW		0x04
#define IEEE80211_HTOP0_RIFS		0x08
/* bits 4-7 reserved */
/* Bytes 2-3. */
#define IEEE80211_HTOP1_PROT_MASK	0x0003
#define IEEE80211_HTOP1_PROT_SHIFT	0
#define IEEE80211_HTOP1_NONGF_STA	0x0004
/* Bit 3 is reserved. */
#define IEEE80211_HTOP1_OBSS_NONHT_STA	0x0010
/* Bits 5-15 are reserved. */
/* Bytes 4-5. */
/* Bits 0-5 are reserved. */
#define IEEE80211_HTOP2_DUALBEACON	0x0040
#define IEEE80211_HTOP2_DUALCTSPROT	0x0080
#define IEEE80211_HTOP2_STBCBEACON	0x0100
#define IEEE80211_HTOP2_LSIGTXOP	0x0200
#define IEEE80211_HTOP2_PCOACTIVE	0x0400
#define IEEE80211_HTOP2_PCOPHASE40	0x0800
/* Bits 12-15 are reserved. */

/*
 * EDCA Access Categories.
 */
enum ieee80211_edca_ac {
	EDCA_AC_BK  = 1,	/* Background */
	EDCA_AC_BE  = 0,	/* Best Effort */
	EDCA_AC_VI  = 2,	/* Video */
	EDCA_AC_VO  = 3		/* Voice */
};
#define EDCA_NUM_AC	4

/* number of TID values (traffic identifier) */
#define IEEE80211_NUM_TID	16

/* Atheros private advanced capabilities info */
#define	ATHEROS_CAP_TURBO_PRIME			0x01
#define	ATHEROS_CAP_COMPRESSION			0x02
#define	ATHEROS_CAP_FAST_FRAME			0x04
/* bits 3-6 reserved */
#define	ATHEROS_CAP_BOOST			0x80

/*-
 * Organizationally Unique Identifiers.
 * See http://standards.ieee.org/regauth/oui/oui.txt for a list.
 */
#define ATHEROS_OUI	((const u_int8_t[]){ 0x00, 0x03, 0x7f })
#define BROADCOM_OUI	((const u_int8_t[]){ 0x00, 0x90, 0x4c })
#define IEEE80211_OUI	((const u_int8_t[]){ 0x00, 0x0f, 0xac })
#define MICROSOFT_OUI	((const u_int8_t[]){ 0x00, 0x50, 0xf2 })

#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))

/*
 * Authentication Algorithm Number field (see 7.3.1.1).
 */
#define IEEE80211_AUTH_ALG_OPEN			0x0000
#define IEEE80211_AUTH_ALG_SHARED		0x0001
#define IEEE80211_AUTH_ALG_LEAP			0x0080

/*
 * Authentication Transaction Sequence Number field (see 7.3.1.2).
 */
enum {
	IEEE80211_AUTH_OPEN_REQUEST		= 1,
	IEEE80211_AUTH_OPEN_RESPONSE		= 2
};
enum {
	IEEE80211_AUTH_SHARED_REQUEST		= 1,
	IEEE80211_AUTH_SHARED_CHALLENGE		= 2,
	IEEE80211_AUTH_SHARED_RESPONSE		= 3,
	IEEE80211_AUTH_SHARED_PASS		= 4
};

/*
 * Reason codes (see Table 22).
 */
enum {
	IEEE80211_REASON_UNSPECIFIED		= 1,
	IEEE80211_REASON_AUTH_EXPIRE		= 2,
	IEEE80211_REASON_AUTH_LEAVE		= 3,
	IEEE80211_REASON_ASSOC_EXPIRE		= 4,
	IEEE80211_REASON_ASSOC_TOOMANY		= 5,
	IEEE80211_REASON_NOT_AUTHED		= 6,
	IEEE80211_REASON_NOT_ASSOCED		= 7,
	IEEE80211_REASON_ASSOC_LEAVE		= 8,
	IEEE80211_REASON_ASSOC_NOT_AUTHED	= 9,

	/* XXX the following two reason codes are not correct */
	IEEE80211_REASON_RSN_REQUIRED		= 11,
	IEEE80211_REASON_RSN_INCONSISTENT	= 12,

	IEEE80211_REASON_IE_INVALID		= 13,
	IEEE80211_REASON_MIC_FAILURE		= 14,
	IEEE80211_REASON_4WAY_TIMEOUT		= 15,
	IEEE80211_REASON_GROUP_TIMEOUT		= 16,
	IEEE80211_REASON_RSN_DIFFERENT_IE	= 17,
	IEEE80211_REASON_BAD_GROUP_CIPHER	= 18,
	IEEE80211_REASON_BAD_PAIRWISE_CIPHER	= 19,
	IEEE80211_REASON_BAD_AKMP		= 20,
	IEEE80211_REASON_RSN_IE_VER_UNSUP	= 21,
	IEEE80211_REASON_RSN_IE_BAD_CAP		= 22,

	IEEE80211_REASON_CIPHER_REJ_POLICY	= 24,

	IEEE80211_REASON_SETUP_REQUIRED		= 38,
	IEEE80211_REASON_TIMEOUT		= 39
};

/*
 * Status codes (see Table 23).
 */
enum {
	IEEE80211_STATUS_SUCCESS		= 0,
	IEEE80211_STATUS_UNSPECIFIED		= 1,
	IEEE80211_STATUS_CAPINFO		= 10,
	IEEE80211_STATUS_NOT_ASSOCED		= 11,
	IEEE80211_STATUS_OTHER			= 12,
	IEEE80211_STATUS_ALG			= 13,
	IEEE80211_STATUS_SEQUENCE		= 14,
	IEEE80211_STATUS_CHALLENGE		= 15,
	IEEE80211_STATUS_TIMEOUT		= 16,
	IEEE80211_STATUS_TOOMANY		= 17,
	IEEE80211_STATUS_BASIC_RATE		= 18,
	IEEE80211_STATUS_SP_REQUIRED		= 19,
	IEEE80211_STATUS_PBCC_REQUIRED		= 20,
	IEEE80211_STATUS_CA_REQUIRED		= 21,
	IEEE80211_STATUS_TOO_MANY_STATIONS	= 22,
	IEEE80211_STATUS_RATES			= 23,
	IEEE80211_STATUS_SHORTSLOT_REQUIRED	= 25,
	IEEE80211_STATUS_DSSSOFDM_REQUIRED	= 26,

	IEEE80211_STATUS_TRY_AGAIN_LATER	= 30,
	IEEE80211_STATUS_MFP_POLICY		= 31,

	IEEE80211_STATUS_REFUSED		= 37,
	IEEE80211_STATUS_INVALID_PARAM		= 38,

	IEEE80211_STATUS_IE_INVALID		= 40,
	IEEE80211_STATUS_BAD_GROUP_CIPHER	= 41,
	IEEE80211_STATUS_BAD_PAIRWISE_CIPHER	= 42,
	IEEE80211_STATUS_BAD_AKMP		= 43,
	IEEE80211_STATUS_RSN_IE_VER_UNSUP	= 44,

	IEEE80211_STATUS_CIPHER_REJ_POLICY	= 46
};

#define	IEEE80211_WEP_KEYLEN			5	/* 40bit */
#define	IEEE80211_WEP_NKID			4	/* number of key ids */
#define IEEE80211_CHALLENGE_LEN			128

/* WEP header constants */
#define	IEEE80211_WEP_IVLEN			3	/* 24bit */
#define	IEEE80211_WEP_KIDLEN			1	/* 1 octet */
#define	IEEE80211_WEP_CRCLEN			4	/* CRC-32 */
#define	IEEE80211_CRC_LEN			4
#define	IEEE80211_WEP_TOTLEN		(IEEE80211_WEP_IVLEN + \
					 IEEE80211_WEP_KIDLEN + \
					 IEEE80211_WEP_CRCLEN)

/*
 * 802.11i defines an extended IV for use with non-WEP ciphers.
 * When the EXTIV bit is set in the key id byte an additional
 * 4 bytes immediately follow the IV for TKIP.  For CCMP the
 * EXTIV bit is likewise set but the 8 bytes represent the
 * CCMP header rather than IV+extended-IV.
 */
#define	IEEE80211_WEP_EXTIV		0x20
#define	IEEE80211_WEP_EXTIVLEN		4	/* extended IV length */
#define	IEEE80211_WEP_MICLEN		8	/* trailing MIC */

/*
 * Maximum acceptable MTU is:
 *	IEEE80211_MAX_LEN - WEP overhead - CRC -
 *		QoS overhead - RSN/WPA overhead
 * Min is arbitrarily chosen > IEEE80211_MIN_LEN.  The default
 * mtu is Ethernet-compatible; it's set by ether_ifattach.
 */
#define	IEEE80211_MTU_MAX			2290
#define	IEEE80211_MTU_MIN			32

#define	IEEE80211_MAX_LEN			(2300 + IEEE80211_CRC_LEN + \
    (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN))
#define	IEEE80211_ACK_LEN \
	(sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN)
#define	IEEE80211_MIN_LEN \
	(sizeof(struct ieee80211_frame_min) + IEEE80211_CRC_LEN)

/*
 * The 802.11 spec says at most 2007 stations may be
 * associated at once.  For most AP's this is way more
 * than is feasible so we use a default of 1800. This
 * number may be overridden by the driver and/or by
 * user configuration.
 */
#define	IEEE80211_AID_MAX	2007
#define	IEEE80211_AID_DEF	1800
#define IEEE80211_AID(b)	((b) &~ 0xc000)

/*
 * 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_PLCP_SERVICE		0x00
#define IEEE80211_PLCP_SERVICE_PBCC	0x08	/* PBCC encoded */
#define IEEE80211_PLCP_SERVICE_LENEXT	0x80	/* length extension bit */

/* One Time Unit (TU) is 1Kus = 1024 microseconds. */
#define IEEE80211_DUR_TU		1024

/* IEEE 802.11b durations for DSSS PHY in microseconds */
#define IEEE80211_DUR_DS_LONG_PREAMBLE	144
#define IEEE80211_DUR_DS_SHORT_PREAMBLE	72
#define	IEEE80211_DUR_DS_PREAMBLE_DIFFERENCE	\
    (IEEE80211_DUR_DS_LONG_PREAMBLE - IEEE80211_DUR_DS_SHORT_PREAMBLE)
#define IEEE80211_DUR_DS_FAST_PLCPHDR	24
#define IEEE80211_DUR_DS_SLOW_PLCPHDR	48
#define	IEEE80211_DUR_DS_PLCPHDR_DIFFERENCE	\
    (IEEE80211_DUR_DS_SLOW_PLCPHDR - IEEE80211_DUR_DS_FAST_PLCPHDR)
#define IEEE80211_DUR_DS_SLOW_ACK	112
#define IEEE80211_DUR_DS_FAST_ACK	56
#define IEEE80211_DUR_DS_SLOW_CTS	112
#define IEEE80211_DUR_DS_FAST_CTS	56
#define IEEE80211_DUR_DS_SLOT		20
#define IEEE80211_DUR_DS_SIFS		10
#define IEEE80211_DUR_DS_PIFS	(IEEE80211_DUR_DS_SIFS + IEEE80211_DUR_DS_SLOT)
#define IEEE80211_DUR_DS_DIFS	(IEEE80211_DUR_DS_SIFS + \
				 2 * IEEE80211_DUR_DS_SLOT)
#define IEEE80211_DUR_DS_EIFS	(IEEE80211_DUR_DS_SIFS + \
				 IEEE80211_DUR_DS_SLOW_ACK + \
				 IEEE80211_DUR_DS_LONG_PREAMBLE + \
				 IEEE80211_DUR_DS_SLOW_PLCPHDR + \
				 IEEE80211_DUR_DIFS)

/*
 * The RSNA key descriptor used by IEEE 802.11 does not use the IEEE 802.1X
 * key descriptor.  Instead, it uses the key descriptor described in 8.5.2.
 */
#define EAPOL_KEY_NONCE_LEN	32
#define EAPOL_KEY_IV_LEN	16
#define EAPOL_KEY_MIC_LEN	16

struct ieee80211_eapol_key {
	u_int8_t	version;
#define EAPOL_VERSION	1

	u_int8_t	type;
/* IEEE Std 802.1X-2004, 7.5.4 (only type EAPOL-Key is used here) */
#define EAP_PACKET	0
#define EAPOL_START	1
#define EAPOL_LOGOFF	2
#define EAPOL_KEY	3
#define EAPOL_ASF_ALERT	4

	u_int8_t	len[2];
	u_int8_t	desc;
/* IEEE Std 802.1X-2004, 7.6.1 */
#define EAPOL_KEY_DESC_RC4		  1	/* deprecated */
#define EAPOL_KEY_DESC_IEEE80211	  2
#define EAPOL_KEY_DESC_WPA		254	/* non-standard WPA */

	u_int8_t	info[2];
#define EAPOL_KEY_VERSION_MASK	0x7
#define EAPOL_KEY_DESC_V1	1
#define EAPOL_KEY_DESC_V2	2
#define EAPOL_KEY_DESC_V3	3		/* 11r */
#define EAPOL_KEY_PAIRWISE	(1 <<  3)
#define EAPOL_KEY_INSTALL	(1 <<  6)	/* I */
#define EAPOL_KEY_KEYACK	(1 <<  7)	/* A */
#define EAPOL_KEY_KEYMIC	(1 <<  8)	/* M */
#define EAPOL_KEY_SECURE	(1 <<  9)	/* S */
#define EAPOL_KEY_ERROR		(1 << 10)
#define EAPOL_KEY_REQUEST	(1 << 11)
#define EAPOL_KEY_ENCRYPTED	(1 << 12)
#define EAPOL_KEY_SMK		(1 << 13)
/* WPA compatibility */
#define EAPOL_KEY_WPA_KID_MASK	0x3
#define EAPOL_KEY_WPA_KID_SHIFT	4
#define EAPOL_KEY_WPA_TX	EAPOL_KEY_INSTALL

	u_int8_t	keylen[2];
	u_int8_t	replaycnt[8];
	u_int8_t	nonce[EAPOL_KEY_NONCE_LEN];
	u_int8_t	iv[EAPOL_KEY_IV_LEN];
	u_int8_t	rsc[8];
	u_int8_t	reserved[8];
	u_int8_t	mic[EAPOL_KEY_MIC_LEN];
	u_int8_t	paylen[2];
} __packed;

/* Pairwise Transient Key (see 8.5.1.2) */
struct ieee80211_ptk {
	u_int8_t	kck[16];	/* Key Confirmation Key */
	u_int8_t	kek[16];	/* Key Encryption Key */
	u_int8_t	tk[32];		/* Temporal Key */
} __packed;

#define IEEE80211_PMKID_LEN	16
#define IEEE80211_SMKID_LEN	16

/*
 * Key Data Encapsulation (see Table 62).
 */
enum {
	IEEE80211_KDE_GTK	= 1,
	IEEE80211_KDE_MACADDR	= 3,
	IEEE80211_KDE_PMKID	= 4,
	IEEE80211_KDE_SMK	= 5,
	IEEE80211_KDE_NONCE	= 6,
	IEEE80211_KDE_LIFETIME	= 7,
	IEEE80211_KDE_ERROR	= 8,
	IEEE80211_KDE_IGTK	= 9	/* 11w */
};

/*
 * HT protection modes (see 802.11-2012 8.4.2.59)
 */
enum ieee80211_htprot {
	IEEE80211_HTPROT_NONE = 0,	/* only 20/40MHz HT STAs exist */
	IEEE80211_HTPROT_NONMEMBER,	/* non-HT STA overlaps our channel */ 
	IEEE80211_HTPROT_20MHZ,		/* 20MHz HT STA on a 40MHz channel */
	IEEE80211_HTPROT_NONHT_MIXED	/* non-HT STA associated to our BSS */
};

#endif /* _NET80211_IEEE80211_H_ */
