diff options
Diffstat (limited to 'sys/net80211/ieee80211.h')
-rw-r--r-- | sys/net80211/ieee80211.h | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/sys/net80211/ieee80211.h b/sys/net80211/ieee80211.h new file mode 100644 index 000000000000..324a7a0c3c58 --- /dev/null +++ b/sys/net80211/ieee80211.h @@ -0,0 +1,326 @@ +/*- + * 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 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 AUTHOR 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. + * + * $FreeBSD$ + */ +#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_ */ |