505 lines
16 KiB
C
505 lines
16 KiB
C
/*-
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* Copyright (c) 2009 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Rui Paulo under sponsorship from the
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* FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _NET80211_IEEE80211_MESH_H_
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#define _NET80211_IEEE80211_MESH_H_
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#define IEEE80211_MESH_DEFAULT_TTL 31
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/*
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* NB: all structures are __packed so sizeof works on arm, et. al.
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*/
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/*
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* 802.11s Information Elements.
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*/
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/* Mesh Configuration */
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struct ieee80211_meshconf_ie {
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uint8_t conf_ie; /* IEEE80211_ELEMID_MESHCONF */
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uint8_t conf_len;
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uint8_t conf_pselid; /* Active Path Sel. Proto. ID */
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uint8_t conf_pmetid; /* Active Metric Identifier */
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uint8_t conf_ccid; /* Congestion Control Mode ID */
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uint8_t conf_syncid; /* Sync. Protocol ID */
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uint8_t conf_authid; /* Auth. Protocol ID */
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uint8_t conf_form; /* Formation Information */
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uint16_t conf_cap;
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} __packed;
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/* Hybrid Wireless Mesh Protocol */
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#define IEEE80211_MESHCONF_PATH_HWMP 0x00
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/* Airtime Link Metric */
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#define IEEE80211_MESHCONF_METRIC_AIRTIME 0x00
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/* Congestion Control */
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#define IEEE80211_MESHCONF_CC_DISABLED 0x00
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#define IEEE80211_MESHCONF_CC_SIG 0x01
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/* Neighbour Offset */
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#define IEEE80211_MESHCONF_SYNC_NEIGHOFF 0x00
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#define IEEE80211_MESHCONF_AUTH_DISABLED 0x00
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/* Simultaneous Authenticaction of Equals */
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#define IEEE80211_MESHCONF_AUTH_SAE 0x01
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#define IEEE80211_MESHCONF_FORM_MP 0x01 /* Connected to Portal */
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#define IEEE80211_MESHCONF_FORM_NNEIGH_MASK 0x04 /* Number of Neighbours */
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#define IEEE80211_MESHCONF_CAP_AP 0x01 /* Accepting Peers */
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#define IEEE80211_MESHCONF_CAP_MCCAS 0x02 /* MCCA supported */
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#define IEEE80211_MESHCONF_CAP_MCCAE 0x04 /* MCCA enabled */
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#define IEEE80211_MESHCONF_CAP_FWRD 0x08 /* forwarding enabled */
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#define IEEE80211_MESHCONF_CAP_BTR 0x10 /* Beacon Timing Report Enab */
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#define IEEE80211_MESHCONF_CAP_TBTTA 0x20 /* TBTT Adj. Enabled */
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#define IEEE80211_MESHCONF_CAP_TBTT 0x40 /* TBTT Adjusting */
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#define IEEE80211_MESHCONF_CAP_PSL 0x80 /* Power Save Level */
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/* Mesh Identifier */
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struct ieee80211_meshid_ie {
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uint8_t id_ie; /* IEEE80211_ELEMID_MESHID */
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uint8_t id_len;
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} __packed;
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/* Link Metric Report */
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struct ieee80211_meshlmetric_ie {
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uint8_t lm_ie; /* IEEE80211_ELEMID_MESHLINK */
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uint8_t lm_len;
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uint32_t lm_metric;
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#define IEEE80211_MESHLMETRIC_INITIALVAL 0
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} __packed;
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/* Congestion Notification */
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struct ieee80211_meshcngst_ie {
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uint8_t cngst_ie; /* IEEE80211_ELEMID_MESHCNGST */
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uint8_t cngst_len;
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uint16_t cngst_timer[4]; /* Expiration Timers: AC_BK,
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AC_BE, AC_VI, AC_VO */
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} __packed;
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/* Peer Link Management */
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struct ieee80211_meshpeer_ie {
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uint8_t peer_ie; /* IEEE80211_ELEMID_MESHPEER */
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uint8_t peer_len;
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uint8_t peer_proto[4]; /* Peer Management Protocol */
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uint16_t peer_llinkid; /* Local Link ID */
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uint16_t peer_linkid; /* Peer Link ID */
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uint16_t peer_rcode;
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} __packed;
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enum {
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IEEE80211_MESH_PEER_LINK_OPEN = 0,
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IEEE80211_MESH_PEER_LINK_CONFIRM = 1,
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IEEE80211_MESH_PEER_LINK_CLOSE = 2,
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/* values 3-255 are reserved */
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};
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/* Mesh Peering Management Protocol */
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#define IEEE80211_MESH_PEER_PROTO_OUI 0x00, 0x0f, 0xac
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#define IEEE80211_MESH_PEER_PROTO_VALUE 0x2a
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#define IEEE80211_MESH_PEER_PROTO { IEEE80211_MESH_PEER_PROTO_OUI, \
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IEEE80211_MESH_PEER_PROTO_VALUE }
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/* Abbreviated Handshake Protocol */
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#define IEEE80211_MESH_PEER_PROTO_AH_OUI 0x00, 0x0f, 0xac
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#define IEEE80211_MESH_PEER_PROTO_AH_VALUE 0x2b
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#define IEEE80211_MESH_PEER_PROTO_AH { IEEE80211_MESH_PEER_PROTO_AH_OUI, \
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IEEE80211_MESH_PEER_PROTO_AH_VALUE }
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#ifdef notyet
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/* Mesh Channel Switch Annoucement */
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struct ieee80211_meshcsa_ie {
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uint8_t csa_ie; /* IEEE80211_ELEMID_MESHCSA */
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uint8_t csa_len;
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uint8_t csa_mode;
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uint8_t csa_newclass; /* New Regulatory Class */
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uint8_t csa_newchan;
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uint8_t csa_precvalue; /* Precedence Value */
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uint8_t csa_count;
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} __packed;
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/* Mesh TIM */
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/* Equal to the non Mesh version */
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/* Mesh Awake Window */
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struct ieee80211_meshawakew_ie {
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uint8_t awakew_ie; /* IEEE80211_ELEMID_MESHAWAKEW */
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uint8_t awakew_len;
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uint8_t awakew_windowlen; /* in TUs */
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} __packed;
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/* Mesh Beacon Timing */
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struct ieee80211_meshbeacont_ie {
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uint8_t beacont_ie; /* IEEE80211_ELEMID_MESHBEACONT */
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uint8_t beacont_len;
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struct {
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uint8_t mp_aid; /* Least Octet of AID */
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uint16_t mp_btime; /* Beacon Time */
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uint16_t mp_bint; /* Beacon Interval */
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} __packed mp[1]; /* NB: variable size */
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} __packed;
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#endif
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/* Portal (MP) Annoucement */
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struct ieee80211_meshpann_ie {
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uint8_t pann_ie; /* IEEE80211_ELEMID_MESHPANN */
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uint8_t pann_len;
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uint8_t pann_flags;
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uint8_t pann_hopcount;
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uint8_t pann_ttl;
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uint8_t pann_addr[IEEE80211_ADDR_LEN];
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uint8_t pann_seq; /* PANN Sequence Number */
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} __packed;
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/* Root (MP) Annoucement */
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struct ieee80211_meshrann_ie {
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uint8_t rann_ie; /* IEEE80211_ELEMID_MESHRANN */
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uint8_t rann_len;
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uint8_t rann_flags;
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#define IEEE80211_MESHRANN_FLAGS_PR 0x01 /* Portal Role */
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uint8_t rann_hopcount;
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uint8_t rann_ttl;
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uint8_t rann_addr[IEEE80211_ADDR_LEN];
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uint32_t rann_seq; /* HWMP Sequence Number */
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uint32_t rann_metric;
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} __packed;
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/* Mesh Path Request */
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struct ieee80211_meshpreq_ie {
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uint8_t preq_ie; /* IEEE80211_ELEMID_MESHPREQ */
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uint8_t preq_len;
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uint8_t preq_flags;
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#define IEEE80211_MESHPREQ_FLAGS_PR 0x01 /* Portal Role */
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#define IEEE80211_MESHPREQ_FLAGS_AM 0x02 /* 0 = ucast / 1 = bcast */
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#define IEEE80211_MESHPREQ_FLAGS_PP 0x04 /* Proactive PREP */
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#define IEEE80211_MESHPREQ_FLAGS_AE 0x40 /* Address Extension */
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uint8_t preq_hopcount;
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uint8_t preq_ttl;
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uint32_t preq_id;
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uint8_t preq_origaddr[IEEE80211_ADDR_LEN];
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uint32_t preq_origseq; /* HWMP Sequence Number */
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/* NB: may have Originator Proxied Address */
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uint32_t preq_lifetime;
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uint32_t preq_metric;
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uint8_t preq_tcount; /* target count */
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struct {
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uint8_t target_flags;
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#define IEEE80211_MESHPREQ_TFLAGS_TO 0x01 /* Target Only */
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#define IEEE80211_MESHPREQ_TFLAGS_RF 0x02 /* Reply and Forward */
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#define IEEE80211_MESHPREQ_TFLAGS_USN 0x04 /* Unknown HWMP seq number */
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uint8_t target_addr[IEEE80211_ADDR_LEN];
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uint32_t target_seq; /* HWMP Sequence Number */
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} __packed preq_targets[1]; /* NB: variable size */
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} __packed;
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/* Mesh Path Reply */
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struct ieee80211_meshprep_ie {
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uint8_t prep_ie; /* IEEE80211_ELEMID_MESHPREP */
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uint8_t prep_len;
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uint8_t prep_flags;
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uint8_t prep_hopcount;
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uint8_t prep_ttl;
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uint8_t prep_targetaddr[IEEE80211_ADDR_LEN];
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uint32_t prep_targetseq;
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/* NB: May have Target Proxied Address */
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uint32_t prep_lifetime;
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uint32_t prep_metric;
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uint8_t prep_origaddr[IEEE80211_ADDR_LEN];
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uint32_t prep_origseq; /* HWMP Sequence Number */
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} __packed;
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/* Mesh Path Error */
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struct ieee80211_meshperr_ie {
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uint8_t perr_ie; /* IEEE80211_ELEMID_MESHPERR */
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uint8_t perr_len;
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uint8_t perr_ttl;
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uint8_t perr_ndests; /* Number of Destinations */
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struct {
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uint8_t dest_flags;
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#define IEEE80211_MESHPERR_DFLAGS_USN 0x01
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#define IEEE80211_MESHPERR_DFLAGS_RC 0x02
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uint8_t dest_addr[IEEE80211_ADDR_LEN];
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uint32_t dest_seq; /* HWMP Sequence Number */
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uint16_t dest_rcode;
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} __packed perr_dests[1]; /* NB: variable size */
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} __packed;
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#ifdef notyet
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/* Mesh Proxy Update */
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struct ieee80211_meshpu_ie {
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uint8_t pu_ie; /* IEEE80211_ELEMID_MESHPU */
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uint8_t pu_len;
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uint8_t pu_flags;
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#define IEEE80211_MESHPU_FLAGS_MASK 0x1
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#define IEEE80211_MESHPU_FLAGS_DEL 0x0
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#define IEEE80211_MESHPU_FLAGS_ADD 0x1
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uint8_t pu_seq; /* PU Sequence Number */
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uint8_t pu_addr[IEEE80211_ADDR_LEN];
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uint8_t pu_naddr; /* Number of Proxied Addresses */
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/* NB: proxied address follows */
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} __packed;
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/* Mesh Proxy Update Confirmation */
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struct ieee80211_meshpuc_ie {
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uint8_t puc_ie; /* IEEE80211_ELEMID_MESHPUC */
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uint8_t puc_len;
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uint8_t puc_flags;
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uint8_t puc_seq; /* PU Sequence Number */
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uint8_t puc_daddr[IEEE80211_ADDR_LEN];
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} __packed;
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#endif
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/*
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* 802.11s Action Frames
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*/
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#define IEEE80211_ACTION_CAT_MESHPEERING 30 /* XXX Linux */
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#define IEEE80211_ACTION_CAT_MESHLMETRIC 13
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#define IEEE80211_ACTION_CAT_MESHPATH 32 /* XXX Linux */
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#define IEEE80211_ACTION_CAT_INTERWORK 15
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#define IEEE80211_ACTION_CAT_RESOURCE 16
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#define IEEE80211_ACTION_CAT_PROXY 17
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/*
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* Mesh Peering Action codes.
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*/
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enum {
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IEEE80211_ACTION_MESHPEERING_OPEN = 0,
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IEEE80211_ACTION_MESHPEERING_CONFIRM = 1,
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IEEE80211_ACTION_MESHPEERING_CLOSE = 2,
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/* 3-255 reserved */
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};
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/*
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* Mesh Path Selection Action code.
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*/
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enum {
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IEEE80211_ACTION_MESHPATH_SEL = 0,
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/* 1-255 reserved */
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};
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/*
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* Mesh Link Metric Action codes.
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*/
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enum {
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IEEE80211_ACTION_MESHLMETRIC_REQ = 0, /* Link Metric Request */
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IEEE80211_ACTION_MESHLMETRIC_REP = 1, /* Link Metric Report */
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/* 2-255 reserved */
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};
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/*
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* Mesh Portal Annoucement Action codes.
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*/
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enum {
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IEEE80211_ACTION_MESHPANN = 0,
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/* 1-255 reserved */
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};
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/*
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* Different mesh control structures based on the AE
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* (Address Extension) bits.
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*/
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struct ieee80211_meshcntl {
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uint8_t mc_flags; /* Address Extension 00 */
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uint8_t mc_ttl; /* TTL */
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uint8_t mc_seq[4]; /* Sequence No. */
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/* NB: more addresses may follow */
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} __packed;
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struct ieee80211_meshcntl_ae01 {
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uint8_t mc_flags; /* Address Extension 01 */
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uint8_t mc_ttl; /* TTL */
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uint8_t mc_seq[4]; /* Sequence No. */
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uint8_t mc_addr4[IEEE80211_ADDR_LEN];
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} __packed;
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struct ieee80211_meshcntl_ae10 {
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uint8_t mc_flags; /* Address Extension 10 */
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uint8_t mc_ttl; /* TTL */
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uint8_t mc_seq[4]; /* Sequence No. */
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uint8_t mc_addr4[IEEE80211_ADDR_LEN];
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uint8_t mc_addr5[IEEE80211_ADDR_LEN];
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} __packed;
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struct ieee80211_meshcntl_ae11 {
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uint8_t mc_flags; /* Address Extension 11 */
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uint8_t mc_ttl; /* TTL */
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uint8_t mc_seq[4]; /* Sequence No. */
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uint8_t mc_addr4[IEEE80211_ADDR_LEN];
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uint8_t mc_addr5[IEEE80211_ADDR_LEN];
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uint8_t mc_addr6[IEEE80211_ADDR_LEN];
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} __packed;
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#ifdef _KERNEL
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MALLOC_DECLARE(M_80211_MESH_RT);
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struct ieee80211_mesh_route {
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TAILQ_ENTRY(ieee80211_mesh_route) rt_next;
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int rt_crtime; /* creation time */
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uint8_t rt_dest[IEEE80211_ADDR_LEN];
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uint8_t rt_nexthop[IEEE80211_ADDR_LEN];
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uint32_t rt_metric; /* path metric */
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uint16_t rt_nhops; /* number of hops */
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uint16_t rt_flags;
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#define IEEE80211_MESHRT_FLAGS_VALID 0x01 /* patch discovery complete */
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#define IEEE80211_MESHRT_FLAGS_PROXY 0x02 /* proxy entry */
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uint32_t rt_lifetime;
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uint32_t rt_lastmseq; /* last seq# seen dest */
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void *rt_priv; /* private data */
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};
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#define IEEE80211_MESH_ROUTE_PRIV(rt, cast) ((cast *)rt->rt_priv)
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#define IEEE80211_MESH_PROTO_DSZ 12 /* description size */
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/*
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* Mesh Path Selection Protocol.
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*/
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enum ieee80211_state;
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struct ieee80211_mesh_proto_path {
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uint8_t mpp_active;
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char mpp_descr[IEEE80211_MESH_PROTO_DSZ];
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uint8_t mpp_ie;
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struct ieee80211_node *
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(*mpp_discover)(struct ieee80211vap *,
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const uint8_t [IEEE80211_ADDR_LEN],
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struct mbuf *);
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void (*mpp_peerdown)(struct ieee80211_node *);
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void (*mpp_vattach)(struct ieee80211vap *);
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void (*mpp_vdetach)(struct ieee80211vap *);
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int (*mpp_newstate)(struct ieee80211vap *,
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enum ieee80211_state, int);
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const size_t mpp_privlen; /* size required in the routing table
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for private data */
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int mpp_inact; /* inact. timeout for invalid routes
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(ticks) */
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};
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/*
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* Mesh Link Metric Report Protocol.
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*/
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struct ieee80211_mesh_proto_metric {
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uint8_t mpm_active;
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char mpm_descr[IEEE80211_MESH_PROTO_DSZ];
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uint8_t mpm_ie;
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uint32_t (*mpm_metric)(struct ieee80211_node *);
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};
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#ifdef notyet
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/*
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* Mesh Authentication Protocol.
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*/
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struct ieee80211_mesh_proto_auth {
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uint8_t mpa_ie[4];
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};
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struct ieee80211_mesh_proto_congestion {
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};
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struct ieee80211_mesh_proto_sync {
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};
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#endif
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typedef uint32_t ieee80211_mesh_seq;
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#define IEEE80211_MESH_SEQ_LEQ(a, b) ((int32_t)((a)-(b)) <= 0)
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#define IEEE80211_MESH_SEQ_GEQ(a, b) ((int32_t)((a)-(b)) >= 0)
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struct ieee80211_mesh_state {
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int ms_idlen;
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uint8_t ms_id[IEEE80211_MESHID_LEN];
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ieee80211_mesh_seq ms_seq; /* seq no for meshcntl */
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uint16_t ms_neighbors;
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uint8_t ms_ttl; /* mesh ttl set in packets */
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#define IEEE80211_MESHFLAGS_AP 0x01 /* accept peers */
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#define IEEE80211_MESHFLAGS_PORTAL 0x02 /* mesh portal role */
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#define IEEE80211_MESHFLAGS_FWD 0x04 /* forward packets */
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uint8_t ms_flags;
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struct mtx ms_rt_lock;
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struct callout ms_cleantimer;
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TAILQ_HEAD(, ieee80211_mesh_route) ms_routes;
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struct ieee80211_mesh_proto_metric *ms_pmetric;
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struct ieee80211_mesh_proto_path *ms_ppath;
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};
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void ieee80211_mesh_attach(struct ieee80211com *);
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void ieee80211_mesh_detach(struct ieee80211com *);
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struct ieee80211_mesh_route *
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ieee80211_mesh_rt_find(struct ieee80211vap *,
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const uint8_t [IEEE80211_ADDR_LEN]);
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struct ieee80211_mesh_route *
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ieee80211_mesh_rt_add(struct ieee80211vap *,
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const uint8_t [IEEE80211_ADDR_LEN]);
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void ieee80211_mesh_rt_del(struct ieee80211vap *,
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const uint8_t [IEEE80211_ADDR_LEN]);
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|
void ieee80211_mesh_rt_flush(struct ieee80211vap *);
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|
void ieee80211_mesh_rt_flush_peer(struct ieee80211vap *,
|
|
const uint8_t [IEEE80211_ADDR_LEN]);
|
|
void ieee80211_mesh_proxy_check(struct ieee80211vap *,
|
|
const uint8_t [IEEE80211_ADDR_LEN]);
|
|
|
|
int ieee80211_mesh_register_proto_path(const
|
|
struct ieee80211_mesh_proto_path *);
|
|
int ieee80211_mesh_register_proto_metric(const
|
|
struct ieee80211_mesh_proto_metric *);
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|
|
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uint8_t * ieee80211_add_meshid(uint8_t *, struct ieee80211vap *);
|
|
uint8_t * ieee80211_add_meshconf(uint8_t *, struct ieee80211vap *);
|
|
uint8_t * ieee80211_add_meshpeer(uint8_t *, uint8_t, uint16_t, uint16_t,
|
|
uint16_t);
|
|
uint8_t * ieee80211_add_meshlmetric(uint8_t *, uint32_t);
|
|
|
|
void ieee80211_mesh_node_init(struct ieee80211vap *,
|
|
struct ieee80211_node *);
|
|
void ieee80211_mesh_node_cleanup(struct ieee80211_node *);
|
|
void ieee80211_parse_meshid(struct ieee80211_node *,
|
|
const uint8_t *);
|
|
struct ieee80211_scanparams;
|
|
void ieee80211_mesh_init_neighbor(struct ieee80211_node *,
|
|
const struct ieee80211_frame *,
|
|
const struct ieee80211_scanparams *);
|
|
void ieee80211_mesh_update_beacon(struct ieee80211vap *,
|
|
struct ieee80211_beacon_offsets *);
|
|
|
|
/*
|
|
* Return non-zero if proxy operation is enabled.
|
|
*/
|
|
static __inline int
|
|
ieee80211_mesh_isproxyena(struct ieee80211vap *vap)
|
|
{
|
|
struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
return (ms->ms_flags &
|
|
(IEEE80211_MESHFLAGS_AP | IEEE80211_MESHFLAGS_PORTAL)) != 0;
|
|
}
|
|
|
|
/*
|
|
* Process an outbound frame: if a path is known to the
|
|
* destination then return a reference to the next hop
|
|
* for immediate transmission. Otherwise initiate path
|
|
* discovery and, if possible queue the packet to be
|
|
* sent when path discovery completes.
|
|
*/
|
|
static __inline struct ieee80211_node *
|
|
ieee80211_mesh_discover(struct ieee80211vap *vap,
|
|
const uint8_t dest[IEEE80211_ADDR_LEN], struct mbuf *m)
|
|
{
|
|
struct ieee80211_mesh_state *ms = vap->iv_mesh;
|
|
return ms->ms_ppath->mpp_discover(vap, dest, m);
|
|
}
|
|
|
|
#endif /* _KERNEL */
|
|
#endif /* !_NET80211_IEEE80211_MESH_H_ */
|