/* $OpenBSD: ieee80211.h,v 1.47 2008/09/27 15:00:08 damien 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 /* * Sequence Control field (see 7.1.3.4). */ #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 7.1.3.5). */ #define IEEE80211_QOS_TXOP 0xff00 #define IEEE80211_QOS_AMSDU 0x0080 /* 11n */ #define IEEE80211_QOS_ACK_POLICY_NORMAL 0 #define IEEE80211_QOS_ACK_POLICY_NOACK 1 #define IEEE80211_QOS_ACK_POLICY_NOEXPLACK 2 #define IEEE80211_QOS_ACK_POLICY_BA 3 #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 7.3.1.4). */ #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 /* bit 12 is reserved */ #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" \ "\16DSSSOFDM\17DELAYED_B_ACK\20IMMEDIATE_B_ACK" /* * Information elements (see Table 7-26). */ 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_QBSS_LOAD = 11, IEEE80211_ELEMID_EDCAPARMS = 12, IEEE80211_ELEMID_CHALLENGE = 16, /* 17-31 reserved for challenge text extension */ IEEE80211_ELEMID_ERP = 42, IEEE80211_ELEMID_QOS_CAP = 46, IEEE80211_ELEMID_RSN = 48, IEEE80211_ELEMID_XRATES = 50, IEEE80211_ELEMID_MMIE = 76, /* 11w */ IEEE80211_ELEMID_ASSOC_CBT = 77, /* 11w */ IEEE80211_ELEMID_TPC = 150, IEEE80211_ELEMID_CCKM = 156, IEEE80211_ELEMID_VENDOR = 221 /* vendor private */ }; /* * Action field category values (see Table 7-24). */ enum { IEEE80211_CATEG_SPECTRUM = 0, IEEE80211_CATEG_QOS = 1, IEEE80211_CATEG_DLS = 2, IEEE80211_CATEG_BA = 3, IEEE80211_CATEG_HT = 7, /* 11n */ IEEE80211_CATEG_SALT = 8 /* 11w */ }; /* * Block Ack Action field values (see Table 7-54). */ #define IEEE80211_ACTION_ADDBA_REQ 0 #define IEEE80211_ACTION_ADDBA_RESP 1 #define IEEE80211_ACTION_DELBA 2 /* * SALT Action field values (see Table 7.57l). */ #define IEEE80211_ACTION_SALT_REQ 0 #define IEEE80211_ACTION_SALT_RESP 1 /* * HT Action field values (see Table 7-57m). */ #define IEEE80211_ACTION_NOTIFYCW 0 #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 */ /* * ERP information element (see 7.3.2.13). */ #define IEEE80211_ERP_NON_ERP_PRESENT 0x01 #define IEEE80211_ERP_USE_PROTECTION 0x02 #define IEEE80211_ERP_BARKER_MODE 0x04 /* * RSN capabilities (see 7.3.2.25.3). */ #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 */ /* * 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_BAD_GROUP_MGMT_CIPHER = 25, /* 11w */ IEEE80211_REASON_MFP_POLICY = 26 /* 11w */ }; /* * 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_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 */ }; #endif /* _NET80211_IEEE80211_H_ */