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freebsd/sys/net80211/ieee80211.h

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/*-
* 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.
* 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.
*
* $FreeBSD$
*/
#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)
/* 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_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__));
#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
/* 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_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 uint8_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;
};
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_CHALLENGE = 16,
IEEE80211_ELEMID_ERP = 42,
IEEE80211_ELEMID_XRATES = 50,
};
#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
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
*
* Unlisted codes are reserved
*/
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,
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,
};
#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
enum {
IEEE80211_AUTH_NONE = 0,
IEEE80211_AUTH_OPEN = 1,
IEEE80211_AUTH_SHARED = 2,
};
#endif /* _NET80211_IEEE80211_H_ */
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