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912e4916d0
HardenedBSD/sys/net80211/ieee80211.h
Sam Leffler 32bdd57b9b Correct ieee80211_gettid: 
o don't increment extracted tid, this was a vestige of IEEE80211_NONQOS_TID
  being defined as 0 (w/ real tid's +1)
o handle 4-address frames (add IEEE80211_IS_DSTODS to check if an 802.11
  header is DSTODS)

Submitted by:	cbzimmer
Reviewed by:	avatar
2009-06-09 16:32:07 +00:00

1050 lines
34 KiB
C
Raw Blame History

/*-
* Copyright (c) 2001 Atsushi Onoe
* Copyright (c) 2002-2009 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.
*
* $FreeBSD$
*/
#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)
typedef uint16_t ieee80211_seq;
/* IEEE 802.11 PLCP header */
struct ieee80211_plcp_hdr {
uint16_t i_sfd;
uint8_t i_signal;
uint8_t i_service;
uint16_t i_length;
uint16_t i_crc;
} __packed;
#define IEEE80211_PLCP_SFD 0xF3A0
#define IEEE80211_PLCP_SERVICE 0x00
#define IEEE80211_PLCP_SERVICE_LOCKED 0x04
#define IEEE80211_PLCL_SERVICE_PBCC 0x08
#define IEEE80211_PLCP_SERVICE_LENEXT5 0x20
#define IEEE80211_PLCP_SERVICE_LENEXT6 0x40
#define IEEE80211_PLCP_SERVICE_LENEXT7 0x80
/*
* generic definitions for IEEE 802.11 frames
*/
struct ieee80211_frame {
uint8_t i_fc[2];
uint8_t i_dur[2];
uint8_t i_addr1[IEEE80211_ADDR_LEN];
uint8_t i_addr2[IEEE80211_ADDR_LEN];
uint8_t i_addr3[IEEE80211_ADDR_LEN];
uint8_t i_seq[2];
/* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
/* see below */
} __packed;
struct ieee80211_qosframe {
uint8_t i_fc[2];
uint8_t i_dur[2];
uint8_t i_addr1[IEEE80211_ADDR_LEN];
uint8_t i_addr2[IEEE80211_ADDR_LEN];
uint8_t i_addr3[IEEE80211_ADDR_LEN];
uint8_t i_seq[2];
uint8_t i_qos[2];
/* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
/* see below */
} __packed;
struct ieee80211_qoscntl {
uint8_t i_qos[2];
};
struct ieee80211_frame_addr4 {
uint8_t i_fc[2];
uint8_t i_dur[2];
uint8_t i_addr1[IEEE80211_ADDR_LEN];
uint8_t i_addr2[IEEE80211_ADDR_LEN];
uint8_t i_addr3[IEEE80211_ADDR_LEN];
uint8_t i_seq[2];
uint8_t i_addr4[IEEE80211_ADDR_LEN];
} __packed;
struct ieee80211_qosframe_addr4 {
uint8_t i_fc[2];
uint8_t i_dur[2];
uint8_t i_addr1[IEEE80211_ADDR_LEN];
uint8_t i_addr2[IEEE80211_ADDR_LEN];
uint8_t i_addr3[IEEE80211_ADDR_LEN];
uint8_t i_seq[2];
uint8_t i_addr4[IEEE80211_ADDR_LEN];
uint8_t i_qos[2];
} __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
/* for TYPE_CTL */
#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_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_IS_DSTODS(wh) \
(((wh)->i_fc[1] & IEEE80211_FC1_DIR_MASK) == IEEE80211_FC1_DIR_DSTODS)
#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_SEQ_RANGE 4096
#define IEEE80211_SEQ_ADD(seq, incr) \
(((seq) + (incr)) & (IEEE80211_SEQ_RANGE-1))
#define IEEE80211_SEQ_INC(seq) IEEE80211_SEQ_ADD(seq,1)
#define IEEE80211_SEQ_SUB(a, b) \
(((a) + IEEE80211_SEQ_RANGE - (b)) & (IEEE80211_SEQ_RANGE-1))
#define IEEE80211_SEQ_BA_RANGE 2048 /* 2^11 */
#define IEEE80211_SEQ_BA_BEFORE(a, b) \
(IEEE80211_SEQ_SUB(b, a+1) < IEEE80211_SEQ_BA_RANGE-1)
#define IEEE80211_NWID_LEN 32
#define IEEE80211_QOS_TXOP 0x00ff
/* bit 8 is reserved */
#define IEEE80211_QOS_AMSDU 0x80
#define IEEE80211_QOS_AMSDU_S 7
#define IEEE80211_QOS_ACKPOLICY 0x60
#define IEEE80211_QOS_ACKPOLICY_S 5
#define IEEE80211_QOS_ACKPOLICY_NOACK 0x20 /* No ACK required */
#define IEEE80211_QOS_ACKPOLICY_BA 0x60 /* Block ACK */
#define IEEE80211_QOS_EOSP 0x10 /* EndOfService Period*/
#define IEEE80211_QOS_EOSP_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 {
uint8_t wme_id; /* IEEE80211_ELEMID_VENDOR */
uint8_t wme_len; /* length in bytes */
uint8_t wme_oui[3]; /* 0x00, 0x50, 0xf2 */
uint8_t wme_type; /* OUI type */
uint8_t wme_subtype; /* OUI subtype */
uint8_t wme_version; /* spec revision */
uint8_t wme_info; /* QoS info */
} __packed;
/*
* WME/802.11e Tspec Element
*/
struct ieee80211_wme_tspec {
uint8_t ts_id;
uint8_t ts_len;
uint8_t ts_oui[3];
uint8_t ts_oui_type;
uint8_t ts_oui_subtype;
uint8_t ts_version;
uint8_t ts_tsinfo[3];
uint8_t ts_nom_msdu[2];
uint8_t ts_max_msdu[2];
uint8_t ts_min_svc[4];
uint8_t ts_max_svc[4];
uint8_t ts_inactv_intv[4];
uint8_t ts_susp_intv[4];
uint8_t ts_start_svc[4];
uint8_t ts_min_rate[4];
uint8_t ts_mean_rate[4];
uint8_t ts_max_burst[4];
uint8_t ts_min_phy[4];
uint8_t ts_peak_rate[4];
uint8_t ts_delay[4];
uint8_t ts_surplus[2];
uint8_t ts_medium_time[2];
} __packed;
/*
* WME AC parameter field
*/
struct ieee80211_wme_acparams {
uint8_t acp_aci_aifsn;
uint8_t acp_logcwminmax;
uint16_t acp_txop;
} __packed;
#define WME_NUM_AC 4 /* 4 AC categories */
#define WME_NUM_TID 16 /* 16 tids */
#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) == 0 || (_tid) == 3) ? WME_AC_BE : \
((_tid) < 3) ? WME_AC_BK : \
((_tid) < 6) ? WME_AC_VI : \
WME_AC_VO)
/*
* WME Parameter Element
*/
struct ieee80211_wme_param {
uint8_t param_id;
uint8_t param_len;
uint8_t param_oui[3];
uint8_t param_oui_type;
uint8_t param_oui_subtype;
uint8_t param_version;
uint8_t param_qosInfo;
#define WME_QOSINFO_COUNT 0x0f /* Mask for param count field */
uint8_t param_reserved;
struct ieee80211_wme_acparams params_acParams[WME_NUM_AC];
} __packed;
/*
* Management Notification Frame
*/
struct ieee80211_mnf {
uint8_t mnf_category;
uint8_t mnf_action;
uint8_t mnf_dialog;
uint8_t mnf_status;
} __packed;
#define MNF_SETUP_REQ 0
#define MNF_SETUP_RESP 1
#define MNF_TEARDOWN 2
/*
* 802.11n Management Action Frames
*/
/* generic frame format */
struct ieee80211_action {
uint8_t ia_category;
uint8_t ia_action;
} __packed;
#define IEEE80211_ACTION_CAT_SM 0 /* Spectrum Management */
#define IEEE80211_ACTION_CAT_QOS 1 /* QoS */
#define IEEE80211_ACTION_CAT_DLS 2 /* DLS */
#define IEEE80211_ACTION_CAT_BA 3 /* BA */
#define IEEE80211_ACTION_CAT_HT 7 /* HT */
#define IEEE80211_ACTION_CAT_VENDOR 127 /* Vendor Specific */
#define IEEE80211_ACTION_HT_TXCHWIDTH 0 /* recommended xmit chan width*/
#define IEEE80211_ACTION_HT_MIMOPWRSAVE 1 /* MIMO power save */
/* HT - recommended transmission channel width */
struct ieee80211_action_ht_txchwidth {
struct ieee80211_action at_header;
uint8_t at_chwidth;
} __packed;
#define IEEE80211_A_HT_TXCHWIDTH_20 0
#define IEEE80211_A_HT_TXCHWIDTH_2040 1
/* HT - MIMO Power Save (NB: D2.04) */
struct ieee80211_action_ht_mimopowersave {
struct ieee80211_action am_header;
uint8_t am_control;
} __packed;
#define IEEE80211_A_HT_MIMOPWRSAVE_ENA 0x01 /* PS enabled */
#define IEEE80211_A_HT_MIMOPWRSAVE_MODE 0x02
#define IEEE80211_A_HT_MIMOPWRSAVE_MODE_S 1
#define IEEE80211_A_HT_MIMOPWRSAVE_DYNAMIC 0x02 /* Dynamic Mode */
#define IEEE80211_A_HT_MIMOPWRSAVE_STATIC 0x00 /* no SM packets */
/* bits 2-7 reserved */
/* Block Ack actions */
#define IEEE80211_ACTION_BA_ADDBA_REQUEST 0 /* ADDBA request */
#define IEEE80211_ACTION_BA_ADDBA_RESPONSE 1 /* ADDBA response */
#define IEEE80211_ACTION_BA_DELBA 2 /* DELBA */
/* Block Ack Parameter Set */
#define IEEE80211_BAPS_BUFSIZ 0xffc0 /* buffer size */
#define IEEE80211_BAPS_BUFSIZ_S 6
#define IEEE80211_BAPS_TID 0x003c /* TID */
#define IEEE80211_BAPS_TID_S 2
#define IEEE80211_BAPS_POLICY 0x0002 /* block ack policy */
#define IEEE80211_BAPS_POLICY_S 1
#define IEEE80211_BAPS_POLICY_DELAYED (0<<IEEE80211_BAPS_POLICY_S)
#define IEEE80211_BAPS_POLICY_IMMEDIATE (1<<IEEE80211_BAPS_POLICY_S)
/* Block Ack Sequence Control */
#define IEEE80211_BASEQ_START 0xfff0 /* starting seqnum */
#define IEEE80211_BASEQ_START_S 4
#define IEEE80211_BASEQ_FRAG 0x000f /* fragment number */
#define IEEE80211_BASEQ_FRAG_S 0
/* Delayed Block Ack Parameter Set */
#define IEEE80211_DELBAPS_TID 0xf000 /* TID */
#define IEEE80211_DELBAPS_TID_S 12
#define IEEE80211_DELBAPS_INIT 0x0800 /* initiator */
#define IEEE80211_DELBAPS_INIT_S 11
/* BA - ADDBA request */
struct ieee80211_action_ba_addbarequest {
struct ieee80211_action rq_header;
uint8_t rq_dialogtoken;
uint16_t rq_baparamset;
uint16_t rq_batimeout; /* in TUs */
uint16_t rq_baseqctl;
} __packed;
/* BA - ADDBA response */
struct ieee80211_action_ba_addbaresponse {
struct ieee80211_action rs_header;
uint8_t rs_dialogtoken;
uint16_t rs_statuscode;
uint16_t rs_baparamset;
uint16_t rs_batimeout; /* in TUs */
} __packed;
/* BA - DELBA */
struct ieee80211_action_ba_delba {
struct ieee80211_action dl_header;
uint16_t dl_baparamset;
uint16_t dl_reasoncode;
} __packed;
/* BAR Control */
#define IEEE80211_BAR_TID 0xf000 /* TID */
#define IEEE80211_BAR_TID_S 12
#define IEEE80211_BAR_COMP 0x0004 /* Compressed Bitmap */
#define IEEE80211_BAR_MTID 0x0002 /* Multi-TID */
#define IEEE80211_BAR_NOACK 0x0001 /* No-Ack policy */
/* BAR Starting Sequence Control */
#define IEEE80211_BAR_SEQ_START 0xfff0 /* starting seqnum */
#define IEEE80211_BAR_SEQ_START_S 4
struct ieee80211_ba_request {
uint16_t rq_barctl;
uint16_t rq_barseqctl;
} __packed;
/*
* Control frames.
*/
struct ieee80211_frame_min {
uint8_t i_fc[2];
uint8_t i_dur[2];
uint8_t i_addr1[IEEE80211_ADDR_LEN];
uint8_t i_addr2[IEEE80211_ADDR_LEN];
/* FCS */
} __packed;
struct ieee80211_frame_rts {
uint8_t i_fc[2];
uint8_t i_dur[2];
uint8_t i_ra[IEEE80211_ADDR_LEN];
uint8_t i_ta[IEEE80211_ADDR_LEN];
/* FCS */
} __packed;
struct ieee80211_frame_cts {
uint8_t i_fc[2];
uint8_t i_dur[2];
uint8_t i_ra[IEEE80211_ADDR_LEN];
/* FCS */
} __packed;
struct ieee80211_frame_ack {
uint8_t i_fc[2];
uint8_t i_dur[2];
uint8_t i_ra[IEEE80211_ADDR_LEN];
/* FCS */
} __packed;
struct ieee80211_frame_pspoll {
uint8_t i_fc[2];
uint8_t i_aid[2];
uint8_t i_bssid[IEEE80211_ADDR_LEN];
uint8_t i_ta[IEEE80211_ADDR_LEN];
/* FCS */
} __packed;
struct ieee80211_frame_cfend { /* NB: also CF-End+CF-Ack */
uint8_t i_fc[2];
uint8_t i_dur[2]; /* should be zero */
uint8_t i_ra[IEEE80211_ADDR_LEN];
uint8_t i_bssid[IEEE80211_ADDR_LEN];
/* FCS */
} __packed;
struct ieee80211_frame_bar {
uint8_t i_fc[2];
uint8_t i_dur[2];
uint8_t i_ra[IEEE80211_ADDR_LEN];
uint8_t i_ta[IEEE80211_ADDR_LEN];
uint16_t i_ctl;
uint16_t i_seq;
/* FCS */
} __packed;
/*
* BEACON management packets
*
* octet timestamp[8]
* octet beacon interval[2]
* octet capability information[2]
* information element
* octet elemid
* octet length
* octet information[length]
*/
#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
#define IEEE80211_CAPINFO_SPECTRUM_MGMT 0x0100
/* bit 9 is 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 */
#define IEEE80211_CAPINFO_BITS \
"\20\1ESS\2IBSS\3CF_POLLABLE\4CF_POLLREQ\5PRIVACY\6SHORT_PREAMBLE" \
"\7PBCC\10CHNL_AGILITY\11SPECTRUM_MGMT\13SHORT_SLOTTIME\14RSN" \
"\16DSSOFDM"
/*
* 802.11i/WPA information element (maximally sized).
*/
struct ieee80211_ie_wpa {
uint8_t wpa_id; /* IEEE80211_ELEMID_VENDOR */
uint8_t wpa_len; /* length in bytes */
uint8_t wpa_oui[3]; /* 0x00, 0x50, 0xf2 */
uint8_t wpa_type; /* OUI type */
uint16_t wpa_version; /* spec revision */
uint32_t wpa_mcipher[1]; /* multicast/group key cipher */
uint16_t wpa_uciphercnt; /* # pairwise key ciphers */
uint32_t wpa_uciphers[8];/* ciphers */
uint16_t wpa_authselcnt; /* authentication selector cnt*/
uint32_t wpa_authsels[8];/* selectors */
uint16_t wpa_caps; /* 802.11i capabilities */
uint16_t wpa_pmkidcnt; /* 802.11i pmkid count */
uint16_t wpa_pmkids[8]; /* 802.11i pmkids */
} __packed;
/*
* 802.11n HT Capability IE
* NB: these reflect D1.10
*/
struct ieee80211_ie_htcap {
uint8_t hc_id; /* element ID */
uint8_t hc_len; /* length in bytes */
uint16_t hc_cap; /* HT caps (see below) */
uint8_t hc_param; /* HT params (see below) */
uint8_t hc_mcsset[16]; /* supported MCS set */
uint16_t hc_extcap; /* extended HT capabilities */
uint32_t hc_txbf; /* txbf capabilities */
uint8_t hc_antenna; /* antenna capabilities */
} __packed;
/* HT capability flags (ht_cap) */
#define IEEE80211_HTCAP_LDPC 0x0001 /* LDPC supported */
#define IEEE80211_HTCAP_CHWIDTH40 0x0002 /* 20/40 supported */
#define IEEE80211_HTCAP_SMPS 0x000c /* SM Power Save mode */
#define IEEE80211_HTCAP_SMPS_OFF 0x000c /* disabled */
#define IEEE80211_HTCAP_SMPS_DYNAMIC 0x0004 /* send RTS first */
/* NB: SMPS value 2 is reserved */
#define IEEE80211_HTCAP_SMPS_ENA 0x0000 /* enabled (static mode) */
#define IEEE80211_HTCAP_GREENFIELD 0x0010 /* Greenfield supported */
#define IEEE80211_HTCAP_SHORTGI20 0x0020 /* Short GI in 20MHz */
#define IEEE80211_HTCAP_SHORTGI40 0x0040 /* Short GI in 40MHz */
#define IEEE80211_HTCAP_TXSTBC 0x0080 /* STBC tx ok */
#define IEEE80211_HTCAP_RXSTBC 0x0300 /* STBC rx support */
#define IEEE80211_HTCAP_RXSTBC_S 8
#define IEEE80211_HTCAP_RXSTBC_1STREAM 0x0100 /* 1 spatial stream */
#define IEEE80211_HTCAP_RXSTBC_2STREAM 0x0200 /* 1-2 spatial streams*/
#define IEEE80211_HTCAP_RXSTBC_3STREAM 0x0300 /* 1-3 spatial streams*/
#define IEEE80211_HTCAP_DELBA 0x0400 /* HT DELBA supported */
#define IEEE80211_HTCAP_MAXAMSDU 0x0800 /* max A-MSDU length */
#define IEEE80211_HTCAP_MAXAMSDU_7935 0x0800 /* 7935 octets */
#define IEEE80211_HTCAP_MAXAMSDU_3839 0x0000 /* 3839 octets */
#define IEEE80211_HTCAP_DSSSCCK40 0x1000 /* DSSS/CCK in 40MHz */
#define IEEE80211_HTCAP_PSMP 0x2000 /* PSMP supported */
#define IEEE80211_HTCAP_40INTOLERANT 0x4000 /* 40MHz intolerant */
#define IEEE80211_HTCAP_LSIGTXOPPROT 0x8000 /* L-SIG TXOP prot */
#define IEEE80211_HTCAP_BITS \
"\20\1LDPC\2CHWIDTH40\5GREENFIELD\6SHORTGI20\7SHORTGI40\10TXSTBC" \
"\13DELBA\14AMSDU(7935)\15DSSSCCK40\16PSMP\1740INTOLERANT" \
"\20LSIGTXOPPROT"
/* HT parameters (hc_param) */
#define IEEE80211_HTCAP_MAXRXAMPDU 0x03 /* max rx A-MPDU factor */
#define IEEE80211_HTCAP_MAXRXAMPDU_S 0
#define IEEE80211_HTCAP_MAXRXAMPDU_8K 0
#define IEEE80211_HTCAP_MAXRXAMPDU_16K 1
#define IEEE80211_HTCAP_MAXRXAMPDU_32K 2
#define IEEE80211_HTCAP_MAXRXAMPDU_64K 3
#define IEEE80211_HTCAP_MPDUDENSITY 0x1c /* min MPDU start spacing */
#define IEEE80211_HTCAP_MPDUDENSITY_S 2
#define IEEE80211_HTCAP_MPDUDENSITY_NA 0 /* no time restriction */
#define IEEE80211_HTCAP_MPDUDENSITY_025 1 /* 1/4 us */
#define IEEE80211_HTCAP_MPDUDENSITY_05 2 /* 1/2 us */
#define IEEE80211_HTCAP_MPDUDENSITY_1 3 /* 1 us */
#define IEEE80211_HTCAP_MPDUDENSITY_2 4 /* 2 us */
#define IEEE80211_HTCAP_MPDUDENSITY_4 5 /* 4 us */
#define IEEE80211_HTCAP_MPDUDENSITY_8 6 /* 8 us */
#define IEEE80211_HTCAP_MPDUDENSITY_16 7 /* 16 us */
/* HT extended capabilities (hc_extcap) */
#define IEEE80211_HTCAP_PCO 0x0001 /* PCO capable */
#define IEEE80211_HTCAP_PCOTRANS 0x0006 /* PCO transition time */
#define IEEE80211_HTCAP_PCOTRANS_S 1
#define IEEE80211_HTCAP_PCOTRANS_04 0x0002 /* 400 us */
#define IEEE80211_HTCAP_PCOTRANS_15 0x0004 /* 1.5 ms */
#define IEEE80211_HTCAP_PCOTRANS_5 0x0006 /* 5 ms */
/* bits 3-7 reserved */
#define IEEE80211_HTCAP_MCSFBACK 0x0300 /* MCS feedback */
#define IEEE80211_HTCAP_MCSFBACK_S 8
#define IEEE80211_HTCAP_MCSFBACK_NONE 0x0000 /* nothing provided */
#define IEEE80211_HTCAP_MCSFBACK_UNSOL 0x0200 /* unsolicited feedback */
#define IEEE80211_HTCAP_MCSFBACK_MRQ 0x0300 /* " "+respond to MRQ */
#define IEEE80211_HTCAP_HTC 0x0400 /* +HTC support */
#define IEEE80211_HTCAP_RDR 0x0800 /* reverse direction responder*/
/* bits 12-15 reserved */
/*
* 802.11n HT Information IE
*/
struct ieee80211_ie_htinfo {
uint8_t hi_id; /* element ID */
uint8_t hi_len; /* length in bytes */
uint8_t hi_ctrlchannel; /* primary channel */
uint8_t hi_byte1; /* ht ie byte 1 */
uint8_t hi_byte2; /* ht ie byte 2 */
uint8_t hi_byte3; /* ht ie byte 3 */
uint16_t hi_byte45; /* ht ie bytes 4+5 */
uint8_t hi_basicmcsset[16]; /* basic MCS set */
} __packed;
/* byte1 */
#define IEEE80211_HTINFO_2NDCHAN 0x03 /* secondary/ext chan offset */
#define IEEE80211_HTINFO_2NDCHAN_S 0
#define IEEE80211_HTINFO_2NDCHAN_NONE 0x00 /* no secondary/ext channel */
#define IEEE80211_HTINFO_2NDCHAN_ABOVE 0x01 /* above private channel */
/* NB: 2 is reserved */
#define IEEE80211_HTINFO_2NDCHAN_BELOW 0x03 /* below primary channel */
#define IEEE80211_HTINFO_TXWIDTH 0x04 /* tx channel width */
#define IEEE80211_HTINFO_TXWIDTH_20 0x00 /* 20MHz width */
#define IEEE80211_HTINFO_TXWIDTH_2040 0x04 /* any supported width */
#define IEEE80211_HTINFO_RIFSMODE 0x08 /* Reduced IFS (RIFS) use */
#define IEEE80211_HTINFO_RIFSMODE_PROH 0x00 /* RIFS use prohibited */
#define IEEE80211_HTINFO_RIFSMODE_PERM 0x08 /* RIFS use permitted */
#define IEEE80211_HTINFO_PMSPONLY 0x10 /* PSMP required to associate */
#define IEEE80211_HTINFO_SIGRAN 0xe0 /* shortest Service Interval */
#define IEEE80211_HTINFO_SIGRAN_S 5
#define IEEE80211_HTINFO_SIGRAN_5 0x00 /* 5 ms */
/* XXX add rest */
/* bytes 2+3 */
#define IEEE80211_HTINFO_OPMODE 0x03 /* operating mode */
#define IEEE80211_HTINFO_OPMODE_S 0
#define IEEE80211_HTINFO_OPMODE_PURE 0x00 /* no protection */
#define IEEE80211_HTINFO_OPMODE_PROTOPT 0x01 /* protection optional */
#define IEEE80211_HTINFO_OPMODE_HT20PR 0x02 /* protection for HT20 sta's */
#define IEEE80211_HTINFO_OPMODE_MIXED 0x03 /* protection for legacy sta's*/
#define IEEE80211_HTINFO_NONGF_PRESENT 0x04 /* non-GF sta's present */
#define IEEE80211_HTINFO_TXBL 0x08 /* transmit burst limit */
#define IEEE80211_HTINFO_NONHT_PRESENT 0x10 /* non-HT sta's present */
/* bits 5-15 reserved */
/* bytes 4+5 */
#define IEEE80211_HTINFO_2NDARYBEACON 0x01
#define IEEE80211_HTINFO_LSIGTXOPPROT 0x02
#define IEEE80211_HTINFO_PCO_ACTIVE 0x04
#define IEEE80211_HTINFO_40MHZPHASE 0x08
/* byte5 */
#define IEEE80211_HTINFO_BASIC_STBCMCS 0x7f
#define IEEE80211_HTINFO_BASIC_STBCMCS_S 0
#define IEEE80211_HTINFO_DUALPROTECTED 0x80
/*
* 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_PWRCNSTR = 32,
IEEE80211_ELEMID_PWRCAP = 33,
IEEE80211_ELEMID_TPCREQ = 34,
IEEE80211_ELEMID_TPCREP = 35,
IEEE80211_ELEMID_SUPPCHAN = 36,
IEEE80211_ELEMID_CSA = 37,
IEEE80211_ELEMID_MEASREQ = 38,
IEEE80211_ELEMID_MEASREP = 39,
IEEE80211_ELEMID_QUIET = 40,
IEEE80211_ELEMID_IBSSDFS = 41,
IEEE80211_ELEMID_ERP = 42,
IEEE80211_ELEMID_HTCAP = 45,
IEEE80211_ELEMID_RSN = 48,
IEEE80211_ELEMID_XRATES = 50,
IEEE80211_ELEMID_HTINFO = 61,
IEEE80211_ELEMID_TPC = 150,
IEEE80211_ELEMID_CCKM = 156,
IEEE80211_ELEMID_VENDOR = 221, /* vendor private */
};
struct ieee80211_tim_ie {
uint8_t tim_ie; /* IEEE80211_ELEMID_TIM */
uint8_t tim_len;
uint8_t tim_count; /* DTIM count */
uint8_t tim_period; /* DTIM period */
uint8_t tim_bitctl; /* bitmap control */
uint8_t tim_bitmap[1]; /* variable-length bitmap */
} __packed;
struct ieee80211_country_ie {
uint8_t ie; /* IEEE80211_ELEMID_COUNTRY */
uint8_t len;
uint8_t cc[3]; /* ISO CC+(I)ndoor/(O)utdoor */
struct {
uint8_t schan; /* starting channel */
uint8_t nchan; /* number channels */
uint8_t maxtxpwr; /* tx power cap */
} __packed band[1]; /* sub bands (NB: var size) */
} __packed;
#define IEEE80211_COUNTRY_MAX_BANDS 84 /* max possible bands */
#define IEEE80211_COUNTRY_MAX_SIZE \
(sizeof(struct ieee80211_country_ie) + 3*(IEEE80211_COUNTRY_MAX_BANDS-1))
/*
* 802.11h Channel Switch Announcement (CSA).
*/
struct ieee80211_csa_ie {
uint8_t csa_ie; /* IEEE80211_ELEMID_CHANSWITCHANN */
uint8_t csa_len;
uint8_t csa_mode; /* Channel Switch Mode */
uint8_t csa_newchan; /* New Channel Number */
uint8_t csa_count; /* Channel Switch Count */
} __packed;
/*
* Note the min acceptable CSA count is used to guard against
* malicious CSA injection in station mode. Defining this value
* as other than 0 violates the 11h spec.
*/
#define IEEE80211_CSA_COUNT_MIN 2
#define IEEE80211_CSA_COUNT_MAX 255
/* rate set entries are in .5 Mb/s units, and potentially marked as basic */
#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
#define IEEE80211_ERP_BITS \
"\20\1NON_ERP_PRESENT\2USE_PROTECTION\3LONG_PREAMBLE"
#define ATH_OUI 0x7f0300 /* Atheros OUI */
#define ATH_OUI_TYPE 0x01 /* Atheros protocol ie */
/* NB: Atheros allocated the OUI for this purpose ~2005 but beware ... */
#define TDMA_OUI ATH_OUI
#define TDMA_OUI_TYPE 0x02 /* TDMA protocol ie */
#define BCM_OUI 0x4c9000 /* Broadcom OUI */
#define BCM_OUI_HTCAP 51 /* pre-draft HTCAP ie */
#define BCM_OUI_HTINFO 52 /* pre-draft HTINFO ie */
#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 WPS_OUI_TYPE 0x04
#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] NB: 1-253 bytes
*/
/* challenge length for shared key auth */
#define IEEE80211_CHALLENGE_LEN 128
#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 and status codes.
*
* Reason codes are used in management frames to indicate why an
* action took place (e.g. on disassociation). Status codes are
* used in management frames to indicate the result of an operation.
*
* 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_DISASSOC_PWRCAP_BAD = 10, /* 11h */
IEEE80211_REASON_DISASSOC_SUPCHAN_BAD = 11, /* 11h */
IEEE80211_REASON_IE_INVALID = 13, /* 11i */
IEEE80211_REASON_MIC_FAILURE = 14, /* 11i */
IEEE80211_REASON_4WAY_HANDSHAKE_TIMEOUT = 15, /* 11i */
IEEE80211_REASON_GROUP_KEY_UPDATE_TIMEOUT = 16, /* 11i */
IEEE80211_REASON_IE_IN_4WAY_DIFFERS = 17, /* 11i */
IEEE80211_REASON_GROUP_CIPHER_INVALID = 18, /* 11i */
IEEE80211_REASON_PAIRWISE_CIPHER_INVALID= 19, /* 11i */
IEEE80211_REASON_AKMP_INVALID = 20, /* 11i */
IEEE80211_REASON_UNSUPP_RSN_IE_VERSION = 21, /* 11i */
IEEE80211_REASON_INVALID_RSN_IE_CAP = 22, /* 11i */
IEEE80211_REASON_802_1X_AUTH_FAILED = 23, /* 11i */
IEEE80211_REASON_CIPHER_SUITE_REJECTED = 24, /* 11i */
IEEE80211_REASON_UNSPECIFIED_QOS = 32, /* 11e */
IEEE80211_REASON_INSUFFICIENT_BW = 33, /* 11e */
IEEE80211_REASON_TOOMANY_FRAMES = 34, /* 11e */
IEEE80211_REASON_OUTSIDE_TXOP = 35, /* 11e */
IEEE80211_REASON_LEAVING_QBSS = 36, /* 11e */
IEEE80211_REASON_BAD_MECHANISM = 37, /* 11e */
IEEE80211_REASON_SETUP_NEEDED = 38, /* 11e */
IEEE80211_REASON_TIMEOUT = 39, /* 11e */
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, /* 11b */
IEEE80211_STATUS_PBCC_REQUIRED = 20, /* 11b */
IEEE80211_STATUS_CA_REQUIRED = 21, /* 11b */
IEEE80211_STATUS_SPECMGMT_REQUIRED = 22, /* 11h */
IEEE80211_STATUS_PWRCAP_REQUIRED = 23, /* 11h */
IEEE80211_STATUS_SUPCHAN_REQUIRED = 24, /* 11h */
IEEE80211_STATUS_SHORTSLOT_REQUIRED = 25, /* 11g */
IEEE80211_STATUS_DSSSOFDM_REQUIRED = 26, /* 11g */
IEEE80211_STATUS_MISSING_HT_CAPS = 27, /* 11n D3.0 */
IEEE80211_STATUS_INVALID_IE = 40, /* 11i */
IEEE80211_STATUS_GROUP_CIPHER_INVALID = 41, /* 11i */
IEEE80211_STATUS_PAIRWISE_CIPHER_INVALID = 42, /* 11i */
IEEE80211_STATUS_AKMP_INVALID = 43, /* 11i */
IEEE80211_STATUS_UNSUPP_RSN_IE_VERSION = 44, /* 11i */
IEEE80211_STATUS_INVALID_RSN_IE_CAP = 45, /* 11i */
IEEE80211_STATUS_CIPHER_SUITE_REJECTED = 46, /* 11i */
};
#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_TOTLEN (IEEE80211_WEP_IVLEN + \
IEEE80211_WEP_KIDLEN + \
IEEE80211_WEP_CRCLEN)
#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 IEEE80211_AID_DEF.
* This number may be overridden by the driver and/or by
* user configuration but may not be less than IEEE80211_AID_MIN
* (see _ieee80211.h for implementation-specific settings).
*/
#define IEEE80211_AID_MAX 2007
#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
/*
* 802.11 frame duration definitions.
*/
struct ieee80211_duration {
uint16_t d_rts_dur;
uint16_t d_data_dur;
uint16_t d_plcp_len;
uint8_t d_residue; /* unused octets in time slot */
};
/* 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_SLOW_PLCPHDR 48
#define IEEE80211_DUR_DS_FAST_PLCPHDR 24
#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)
#endif /* _NET80211_IEEE80211_H_ */
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