/*- * Copyright (c) 2001 Atsushi Onoe * Copyright (c) 2002-2005 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: src/sys/net80211/ieee80211.h,v 1.12 2006/12/01 18:40:51 imp Exp $ */ #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; } GNUNET_PACKED; #define IEEE80211_PLCP_SFD 0xF3A0 #define IEEE80211_PLCP_SERVICE 0x00 /* * 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 */ } GNUNET_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 */ } GNUNET_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]; } GNUNET_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]; } GNUNET_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_FC0_SUBTYPE_QOS 0x80 #define IEEE80211_FC0_SUBTYPE_QOS_NULL 0xc0 #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 #define IEEE80211_QOS_TXOP 0x00ff /* bit 8 is reserved */ #define IEEE80211_QOS_ACKPOLICY 0x60 #define IEEE80211_QOS_ACKPOLICY_S 5 #define IEEE80211_QOS_ESOP 0x10 #define IEEE80211_QOS_ESOP_S 4 #define IEEE80211_QOS_TID 0x0f /* does frame have QoS sequence control data */ #define IEEE80211_QOS_HAS_SEQ(wh) \ (((wh)->i_fc[0] & \ (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_QOS)) == \ (IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_QOS)) /* * WME/802.11e information element. */ struct ieee80211_wme_info { u_int8_t wme_id; /* IEEE80211_ELEMID_VENDOR */ u_int8_t wme_len; /* length in bytes */ u_int8_t wme_oui[3]; /* 0x00, 0x50, 0xf2 */ u_int8_t wme_type; /* OUI type */ u_int8_t wme_subtype; /* OUI subtype */ u_int8_t wme_version; /* spec revision */ u_int8_t wme_info; /* QoS info */ } GNUNET_PACKED; /* * 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]; } GNUNET_PACKED; /* * WME AC parameter field */ struct ieee80211_wme_acparams { u_int8_t acp_aci_aifsn; u_int8_t acp_logcwminmax; u_int16_t acp_txop; } GNUNET_PACKED; #define WME_NUM_AC 4 /* 4 AC categories */ #define WME_PARAM_ACI 0x60 /* Mask for ACI field */ #define WME_PARAM_ACI_S 5 /* Shift for ACI field */ #define WME_PARAM_ACM 0x10 /* Mask for ACM bit */ #define WME_PARAM_ACM_S 4 /* Shift for ACM bit */ #define WME_PARAM_AIFSN 0x0f /* Mask for aifsn field */ #define WME_PARAM_AIFSN_S 0 /* Shift for aifsn field */ #define WME_PARAM_LOGCWMIN 0x0f /* Mask for CwMin field (in log) */ #define WME_PARAM_LOGCWMIN_S 0 /* Shift for CwMin field */ #define WME_PARAM_LOGCWMAX 0xf0 /* Mask for CwMax field (in log) */ #define WME_PARAM_LOGCWMAX_S 4 /* Shift for CwMax field */ #define WME_AC_TO_TID(_ac) ( \ ((_ac) == WME_AC_VO) ? 6 : \ ((_ac) == WME_AC_VI) ? 5 : \ ((_ac) == WME_AC_BK) ? 1 : \ 0) #define TID_TO_WME_AC(_tid) ( \ ((_tid) < 1) ? WME_AC_BE : \ ((_tid) < 3) ? WME_AC_BK : \ ((_tid) < 6) ? WME_AC_VI : \ WME_AC_VO) /* * WME Parameter Element */ struct ieee80211_wme_param { u_int8_t param_id; u_int8_t param_len; u_int8_t param_oui[3]; u_int8_t param_oui_type; u_int8_t param_oui_sybtype; u_int8_t param_version; u_int8_t param_qosInfo; #define WME_QOSINFO_COUNT 0x0f /* Mask for param count field */ u_int8_t param_reserved; struct ieee80211_wme_acparams params_acParams[WME_NUM_AC]; } GNUNET_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; } GNUNET_PACKED; #define MNF_SETUP_REQ 0 #define MNF_SETUP_RESP 1 #define MNF_TEARDOWN 2 /* * 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 */ } GNUNET_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 */ } GNUNET_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 */ } GNUNET_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 */ } GNUNET_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 */ } GNUNET_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 */ } GNUNET_PACKED; /* * 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 #define IEEE80211_CAPINFO_RSN 0x0800 /* bit 12 is reserved */ #define IEEE80211_CAPINFO_DSSSOFDM 0x2000 /* bits 14-15 are reserved */ /* * 802.11i/WPA information element (maximally sized). */ struct ieee80211_ie_wpa { u_int8_t wpa_id; /* IEEE80211_ELEMID_VENDOR */ u_int8_t wpa_len; /* length in bytes */ u_int8_t wpa_oui[3]; /* 0x00, 0x50, 0xf2 */ u_int8_t wpa_type; /* OUI type */ u_int16_t wpa_version; /* spec revision */ u_int32_t wpa_mcipher[1]; /* multicast/group key cipher */ u_int16_t wpa_uciphercnt; /* # pairwise key ciphers */ u_int32_t wpa_uciphers[8];/* ciphers */ u_int16_t wpa_authselcnt; /* authentication selector cnt*/ u_int32_t wpa_authsels[8];/* selectors */ u_int16_t wpa_caps; /* 802.11i capabilities */ u_int16_t wpa_pmkidcnt; /* 802.11i pmkid count */ u_int16_t wpa_pmkids[8]; /* 802.11i pmkids */ } GNUNET_PACKED; /* * Management information element payloads. */ 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, /* 17-31 reserved for challenge text extension */ IEEE80211_ELEMID_ERP = 42, IEEE80211_ELEMID_RSN = 48, IEEE80211_ELEMID_XRATES = 50, IEEE80211_ELEMID_TPC = 150, IEEE80211_ELEMID_CCKM = 156, IEEE80211_ELEMID_VENDOR = 221, /* vendor private */ }; struct ieee80211_tim_ie { u_int8_t tim_ie; /* IEEE80211_ELEMID_TIM */ u_int8_t tim_len; u_int8_t tim_count; /* DTIM count */ u_int8_t tim_period; /* DTIM period */ u_int8_t tim_bitctl; /* bitmap control */ u_int8_t tim_bitmap[1]; /* variable-length bitmap */ } GNUNET_PACKED; struct ieee80211_country_ie { u_int8_t ie; /* IEEE80211_ELEMID_COUNTRY */ u_int8_t len; u_int8_t cc[3]; /* ISO CC+(I)ndoor/(O)utdoor */ struct { u_int8_t schan; /* starting channel */ u_int8_t nchan; /* number channels */ u_int8_t maxtxpwr; /* tx power cap */ } GNUNET_PACKED band[4]; /* up to 4 sub bands */ } GNUNET_PACKED; #define IEEE80211_CHALLENGE_LEN 128 #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_LONG_PREAMBLE 0x04 /* 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 #define ATH_OUI 0x7f0300 /* Atheros OUI */ #define ATH_OUI_TYPE 0x01 #define ATH_OUI_VERSION 0x01 #define WPA_OUI 0xf25000 #define WPA_OUI_TYPE 0x01 #define WPA_VERSION 1 /* current supported version */ #define WPA_CSE_NULL 0x00 #define WPA_CSE_WEP40 0x01 #define WPA_CSE_TKIP 0x02 #define WPA_CSE_CCMP 0x04 #define WPA_CSE_WEP104 0x05 #define WPA_ASE_NONE 0x00 #define WPA_ASE_8021X_UNSPEC 0x01 #define WPA_ASE_8021X_PSK 0x02 #define RSN_OUI 0xac0f00 #define RSN_VERSION 1 /* current supported version */ #define RSN_CSE_NULL 0x00 #define RSN_CSE_WEP40 0x01 #define RSN_CSE_TKIP 0x02 #define RSN_CSE_WRAP 0x03 #define RSN_CSE_CCMP 0x04 #define RSN_CSE_WEP104 0x05 #define RSN_ASE_NONE 0x00 #define RSN_ASE_8021X_UNSPEC 0x01 #define RSN_ASE_8021X_PSK 0x02 #define RSN_CAP_PREAUTH 0x01 #define WME_OUI 0xf25000 #define WME_OUI_TYPE 0x02 #define WME_INFO_OUI_SUBTYPE 0x00 #define WME_PARAM_OUI_SUBTYPE 0x01 #define WME_VERSION 1 /* WME stream classes */ #define WME_AC_BE 0 /* best effort */ #define WME_AC_BK 1 /* background */ #define WME_AC_VI 2 /* video */ #define WME_AC_VO 3 /* voice */ /* * 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_ALG_LEAP 0x0080 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_REASON_RSN_REQUIRED = 11, IEEE80211_REASON_RSN_INCONSISTENT = 12, IEEE80211_REASON_IE_INVALID = 13, IEEE80211_REASON_MIC_FAILURE = 14, 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 */ /* * 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 */ #define IEEE80211_CRC_LEN 4 /* * 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 128. This * number may be overridden by the driver and/or by * user configuration. */ #define IEEE80211_AID_MAX 2007 #define IEEE80211_AID_DEF 128 #define IEEE80211_AID(b) ((b) &~ 0xc000) /* * RTS frame length parameters. The default is specified in * the 802.11 spec as 512; we treat it as implementation-dependent * so it's defined in ieee80211_var.h. The max may be wrong * for jumbo frames. */ #define IEEE80211_RTS_MIN 1 #define IEEE80211_RTS_MAX 2346 /* * TX fragmentation parameters. As above for RTS, we treat * default as implementation-dependent so define it elsewhere. */ #define IEEE80211_FRAG_MIN 256 #define IEEE80211_FRAG_MAX 2346 /* * Beacon interval (TU's). Min+max come from WiFi requirements. * As above, we treat default as implementation-dependent so * define it elsewhere. */ #define IEEE80211_BINTVAL_MAX 1000 /* max beacon interval (TU's) */ #define IEEE80211_BINTVAL_MIN 25 /* min beacon interval (TU's) */ /* * DTIM period (beacons). Min+max are not really defined * by the protocol but we want them publicly visible so * define them here. */ #define IEEE80211_DTIM_MAX 15 /* max DTIM period */ #define IEEE80211_DTIM_MIN 1 /* min DTIM period */ /* * Beacon miss threshold (beacons). As for DTIM, we define * them here to be publicly visible. Note the max may be * clamped depending on device capabilities. */ #define IEEE80211_HWBMISS_MIN 1 #define IEEE80211_HWBMISS_MAX 255 #endif /* _NET80211_IEEE80211_H_ */