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/*-
* Copyright (c) 2009 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Rui Paulo under sponsorship from the
* FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: release/9.1.0/sys/net80211/ieee80211_mesh.h 202178 2010-01-12 22:22:27Z rpaulo $
*/
#ifndef _NET80211_IEEE80211_MESH_H_
#define _NET80211_IEEE80211_MESH_H_
#define IEEE80211_MESH_DEFAULT_TTL 31
/*
* NB: all structures are __packed so sizeof works on arm, et. al.
*/
/*
* 802.11s Information Elements.
*/
/* Mesh Configuration */
struct ieee80211_meshconf_ie {
uint8_t conf_ie; /* IEEE80211_ELEMID_MESHCONF */
uint8_t conf_len;
uint8_t conf_pselid; /* Active Path Sel. Proto. ID */
uint8_t conf_pmetid; /* Active Metric Identifier */
uint8_t conf_ccid; /* Congestion Control Mode ID */
uint8_t conf_syncid; /* Sync. Protocol ID */
uint8_t conf_authid; /* Auth. Protocol ID */
uint8_t conf_form; /* Formation Information */
uint16_t conf_cap;
} __packed;
/* Hybrid Wireless Mesh Protocol */
#define IEEE80211_MESHCONF_PATH_HWMP 0x00
/* Airtime Link Metric */
#define IEEE80211_MESHCONF_METRIC_AIRTIME 0x00
/* Congestion Control */
#define IEEE80211_MESHCONF_CC_DISABLED 0x00
#define IEEE80211_MESHCONF_CC_SIG 0x01
/* Neighbour Offset */
#define IEEE80211_MESHCONF_SYNC_NEIGHOFF 0x00
#define IEEE80211_MESHCONF_AUTH_DISABLED 0x00
/* Simultaneous Authenticaction of Equals */
#define IEEE80211_MESHCONF_AUTH_SAE 0x01
#define IEEE80211_MESHCONF_FORM_MP 0x01 /* Connected to Portal */
#define IEEE80211_MESHCONF_FORM_NNEIGH_MASK 0x04 /* Number of Neighbours */
#define IEEE80211_MESHCONF_CAP_AP 0x01 /* Accepting Peers */
#define IEEE80211_MESHCONF_CAP_MCCAS 0x02 /* MCCA supported */
#define IEEE80211_MESHCONF_CAP_MCCAE 0x04 /* MCCA enabled */
#define IEEE80211_MESHCONF_CAP_FWRD 0x08 /* forwarding enabled */
#define IEEE80211_MESHCONF_CAP_BTR 0x10 /* Beacon Timing Report Enab */
#define IEEE80211_MESHCONF_CAP_TBTTA 0x20 /* TBTT Adj. Enabled */
#define IEEE80211_MESHCONF_CAP_TBTT 0x40 /* TBTT Adjusting */
#define IEEE80211_MESHCONF_CAP_PSL 0x80 /* Power Save Level */
/* Mesh Identifier */
struct ieee80211_meshid_ie {
uint8_t id_ie; /* IEEE80211_ELEMID_MESHID */
uint8_t id_len;
} __packed;
/* Link Metric Report */
struct ieee80211_meshlmetric_ie {
uint8_t lm_ie; /* IEEE80211_ELEMID_MESHLINK */
uint8_t lm_len;
uint32_t lm_metric;
#define IEEE80211_MESHLMETRIC_INITIALVAL 0
} __packed;
/* Congestion Notification */
struct ieee80211_meshcngst_ie {
uint8_t cngst_ie; /* IEEE80211_ELEMID_MESHCNGST */
uint8_t cngst_len;
uint16_t cngst_timer[4]; /* Expiration Timers: AC_BK,
AC_BE, AC_VI, AC_VO */
} __packed;
/* Peer Link Management */
struct ieee80211_meshpeer_ie {
uint8_t peer_ie; /* IEEE80211_ELEMID_MESHPEER */
uint8_t peer_len;
uint8_t peer_proto[4]; /* Peer Management Protocol */
uint16_t peer_llinkid; /* Local Link ID */
uint16_t peer_linkid; /* Peer Link ID */
uint16_t peer_rcode;
} __packed;
enum {
IEEE80211_MESH_PEER_LINK_OPEN = 0,
IEEE80211_MESH_PEER_LINK_CONFIRM = 1,
IEEE80211_MESH_PEER_LINK_CLOSE = 2,
/* values 3-255 are reserved */
};
/* Mesh Peering Management Protocol */
#define IEEE80211_MESH_PEER_PROTO_OUI 0x00, 0x0f, 0xac
#define IEEE80211_MESH_PEER_PROTO_VALUE 0x2a
#define IEEE80211_MESH_PEER_PROTO { IEEE80211_MESH_PEER_PROTO_OUI, \
IEEE80211_MESH_PEER_PROTO_VALUE }
/* Abbreviated Handshake Protocol */
#define IEEE80211_MESH_PEER_PROTO_AH_OUI 0x00, 0x0f, 0xac
#define IEEE80211_MESH_PEER_PROTO_AH_VALUE 0x2b
#define IEEE80211_MESH_PEER_PROTO_AH { IEEE80211_MESH_PEER_PROTO_AH_OUI, \
IEEE80211_MESH_PEER_PROTO_AH_VALUE }
#ifdef notyet
/* Mesh Channel Switch Annoucement */
struct ieee80211_meshcsa_ie {
uint8_t csa_ie; /* IEEE80211_ELEMID_MESHCSA */
uint8_t csa_len;
uint8_t csa_mode;
uint8_t csa_newclass; /* New Regulatory Class */
uint8_t csa_newchan;
uint8_t csa_precvalue; /* Precedence Value */
uint8_t csa_count;
} __packed;
/* Mesh TIM */
/* Equal to the non Mesh version */
/* Mesh Awake Window */
struct ieee80211_meshawakew_ie {
uint8_t awakew_ie; /* IEEE80211_ELEMID_MESHAWAKEW */
uint8_t awakew_len;
uint8_t awakew_windowlen; /* in TUs */
} __packed;
/* Mesh Beacon Timing */
struct ieee80211_meshbeacont_ie {
uint8_t beacont_ie; /* IEEE80211_ELEMID_MESHBEACONT */
uint8_t beacont_len;
struct {
uint8_t mp_aid; /* Least Octet of AID */
uint16_t mp_btime; /* Beacon Time */
uint16_t mp_bint; /* Beacon Interval */
} __packed mp[1]; /* NB: variable size */
} __packed;
#endif
/* Portal (MP) Annoucement */
struct ieee80211_meshpann_ie {
uint8_t pann_ie; /* IEEE80211_ELEMID_MESHPANN */
uint8_t pann_len;
uint8_t pann_flags;
uint8_t pann_hopcount;
uint8_t pann_ttl;
uint8_t pann_addr[IEEE80211_ADDR_LEN];
uint8_t pann_seq; /* PANN Sequence Number */
} __packed;
/* Root (MP) Annoucement */
struct ieee80211_meshrann_ie {
uint8_t rann_ie; /* IEEE80211_ELEMID_MESHRANN */
uint8_t rann_len;
uint8_t rann_flags;
#define IEEE80211_MESHRANN_FLAGS_PR 0x01 /* Portal Role */
uint8_t rann_hopcount;
uint8_t rann_ttl;
uint8_t rann_addr[IEEE80211_ADDR_LEN];
uint32_t rann_seq; /* HWMP Sequence Number */
uint32_t rann_metric;
} __packed;
/* Mesh Path Request */
struct ieee80211_meshpreq_ie {
uint8_t preq_ie; /* IEEE80211_ELEMID_MESHPREQ */
uint8_t preq_len;
uint8_t preq_flags;
#define IEEE80211_MESHPREQ_FLAGS_PR 0x01 /* Portal Role */
#define IEEE80211_MESHPREQ_FLAGS_AM 0x02 /* 0 = ucast / 1 = bcast */
#define IEEE80211_MESHPREQ_FLAGS_PP 0x04 /* Proactive PREP */
#define IEEE80211_MESHPREQ_FLAGS_AE 0x40 /* Address Extension */
uint8_t preq_hopcount;
uint8_t preq_ttl;
uint32_t preq_id;
uint8_t preq_origaddr[IEEE80211_ADDR_LEN];
uint32_t preq_origseq; /* HWMP Sequence Number */
/* NB: may have Originator Proxied Address */
uint32_t preq_lifetime;
uint32_t preq_metric;
uint8_t preq_tcount; /* target count */
struct {
uint8_t target_flags;
#define IEEE80211_MESHPREQ_TFLAGS_TO 0x01 /* Target Only */
#define IEEE80211_MESHPREQ_TFLAGS_RF 0x02 /* Reply and Forward */
#define IEEE80211_MESHPREQ_TFLAGS_USN 0x04 /* Unknown HWMP seq number */
uint8_t target_addr[IEEE80211_ADDR_LEN];
uint32_t target_seq; /* HWMP Sequence Number */
} __packed preq_targets[1]; /* NB: variable size */
} __packed;
/* Mesh Path Reply */
struct ieee80211_meshprep_ie {
uint8_t prep_ie; /* IEEE80211_ELEMID_MESHPREP */
uint8_t prep_len;
uint8_t prep_flags;
uint8_t prep_hopcount;
uint8_t prep_ttl;
uint8_t prep_targetaddr[IEEE80211_ADDR_LEN];
uint32_t prep_targetseq;
/* NB: May have Target Proxied Address */
uint32_t prep_lifetime;
uint32_t prep_metric;
uint8_t prep_origaddr[IEEE80211_ADDR_LEN];
uint32_t prep_origseq; /* HWMP Sequence Number */
} __packed;
/* Mesh Path Error */
struct ieee80211_meshperr_ie {
uint8_t perr_ie; /* IEEE80211_ELEMID_MESHPERR */
uint8_t perr_len;
uint8_t perr_ttl;
uint8_t perr_ndests; /* Number of Destinations */
struct {
uint8_t dest_flags;
#define IEEE80211_MESHPERR_DFLAGS_USN 0x01
#define IEEE80211_MESHPERR_DFLAGS_RC 0x02
uint8_t dest_addr[IEEE80211_ADDR_LEN];
uint32_t dest_seq; /* HWMP Sequence Number */
uint16_t dest_rcode;
} __packed perr_dests[1]; /* NB: variable size */
} __packed;
#ifdef notyet
/* Mesh Proxy Update */
struct ieee80211_meshpu_ie {
uint8_t pu_ie; /* IEEE80211_ELEMID_MESHPU */
uint8_t pu_len;
uint8_t pu_flags;
#define IEEE80211_MESHPU_FLAGS_MASK 0x1
#define IEEE80211_MESHPU_FLAGS_DEL 0x0
#define IEEE80211_MESHPU_FLAGS_ADD 0x1
uint8_t pu_seq; /* PU Sequence Number */
uint8_t pu_addr[IEEE80211_ADDR_LEN];
uint8_t pu_naddr; /* Number of Proxied Addresses */
/* NB: proxied address follows */
} __packed;
/* Mesh Proxy Update Confirmation */
struct ieee80211_meshpuc_ie {
uint8_t puc_ie; /* IEEE80211_ELEMID_MESHPUC */
uint8_t puc_len;
uint8_t puc_flags;
uint8_t puc_seq; /* PU Sequence Number */
uint8_t puc_daddr[IEEE80211_ADDR_LEN];
} __packed;
#endif
/*
* 802.11s Action Frames
*/
#define IEEE80211_ACTION_CAT_MESHPEERING 30 /* XXX Linux */
#define IEEE80211_ACTION_CAT_MESHLMETRIC 13
#define IEEE80211_ACTION_CAT_MESHPATH 32 /* XXX Linux */
#define IEEE80211_ACTION_CAT_INTERWORK 15
#define IEEE80211_ACTION_CAT_RESOURCE 16
#define IEEE80211_ACTION_CAT_PROXY 17
/*
* Mesh Peering Action codes.
*/
enum {
IEEE80211_ACTION_MESHPEERING_OPEN = 0,
IEEE80211_ACTION_MESHPEERING_CONFIRM = 1,
IEEE80211_ACTION_MESHPEERING_CLOSE = 2,
/* 3-255 reserved */
};
/*
* Mesh Path Selection Action code.
*/
enum {
IEEE80211_ACTION_MESHPATH_SEL = 0,
/* 1-255 reserved */
};
/*
* Mesh Link Metric Action codes.
*/
enum {
IEEE80211_ACTION_MESHLMETRIC_REQ = 0, /* Link Metric Request */
IEEE80211_ACTION_MESHLMETRIC_REP = 1, /* Link Metric Report */
/* 2-255 reserved */
};
/*
* Mesh Portal Annoucement Action codes.
*/
enum {
IEEE80211_ACTION_MESHPANN = 0,
/* 1-255 reserved */
};
/*
* Different mesh control structures based on the AE
* (Address Extension) bits.
*/
struct ieee80211_meshcntl {
uint8_t mc_flags; /* Address Extension 00 */
uint8_t mc_ttl; /* TTL */
uint8_t mc_seq[4]; /* Sequence No. */
/* NB: more addresses may follow */
} __packed;
struct ieee80211_meshcntl_ae01 {
uint8_t mc_flags; /* Address Extension 01 */
uint8_t mc_ttl; /* TTL */
uint8_t mc_seq[4]; /* Sequence No. */
uint8_t mc_addr4[IEEE80211_ADDR_LEN];
} __packed;
struct ieee80211_meshcntl_ae10 {
uint8_t mc_flags; /* Address Extension 10 */
uint8_t mc_ttl; /* TTL */
uint8_t mc_seq[4]; /* Sequence No. */
uint8_t mc_addr4[IEEE80211_ADDR_LEN];
uint8_t mc_addr5[IEEE80211_ADDR_LEN];
} __packed;
struct ieee80211_meshcntl_ae11 {
uint8_t mc_flags; /* Address Extension 11 */
uint8_t mc_ttl; /* TTL */
uint8_t mc_seq[4]; /* Sequence No. */
uint8_t mc_addr4[IEEE80211_ADDR_LEN];
uint8_t mc_addr5[IEEE80211_ADDR_LEN];
uint8_t mc_addr6[IEEE80211_ADDR_LEN];
} __packed;
#ifdef _KERNEL
MALLOC_DECLARE(M_80211_MESH_RT);
struct ieee80211_mesh_route {
TAILQ_ENTRY(ieee80211_mesh_route) rt_next;
int rt_crtime; /* creation time */
uint8_t rt_dest[IEEE80211_ADDR_LEN];
uint8_t rt_nexthop[IEEE80211_ADDR_LEN];
uint32_t rt_metric; /* path metric */
uint16_t rt_nhops; /* number of hops */
uint16_t rt_flags;
#define IEEE80211_MESHRT_FLAGS_VALID 0x01 /* patch discovery complete */
#define IEEE80211_MESHRT_FLAGS_PROXY 0x02 /* proxy entry */
uint32_t rt_lifetime;
uint32_t rt_lastmseq; /* last seq# seen dest */
void *rt_priv; /* private data */
};
#define IEEE80211_MESH_ROUTE_PRIV(rt, cast) ((cast *)rt->rt_priv)
#define IEEE80211_MESH_PROTO_DSZ 12 /* description size */
/*
* Mesh Path Selection Protocol.
*/
enum ieee80211_state;
struct ieee80211_mesh_proto_path {
uint8_t mpp_active;
char mpp_descr[IEEE80211_MESH_PROTO_DSZ];
uint8_t mpp_ie;
struct ieee80211_node *
(*mpp_discover)(struct ieee80211vap *,
const uint8_t [IEEE80211_ADDR_LEN],
struct mbuf *);
void (*mpp_peerdown)(struct ieee80211_node *);
void (*mpp_vattach)(struct ieee80211vap *);
void (*mpp_vdetach)(struct ieee80211vap *);
int (*mpp_newstate)(struct ieee80211vap *,
enum ieee80211_state, int);
const size_t mpp_privlen; /* size required in the routing table
for private data */
int mpp_inact; /* inact. timeout for invalid routes
(ticks) */
};
/*
* Mesh Link Metric Report Protocol.
*/
struct ieee80211_mesh_proto_metric {
uint8_t mpm_active;
char mpm_descr[IEEE80211_MESH_PROTO_DSZ];
uint8_t mpm_ie;
uint32_t (*mpm_metric)(struct ieee80211_node *);
};
#ifdef notyet
/*
* Mesh Authentication Protocol.
*/
struct ieee80211_mesh_proto_auth {
uint8_t mpa_ie[4];
};
struct ieee80211_mesh_proto_congestion {
};
struct ieee80211_mesh_proto_sync {
};
#endif
typedef uint32_t ieee80211_mesh_seq;
#define IEEE80211_MESH_SEQ_LEQ(a, b) ((int32_t)((a)-(b)) <= 0)
#define IEEE80211_MESH_SEQ_GEQ(a, b) ((int32_t)((a)-(b)) >= 0)
struct ieee80211_mesh_state {
int ms_idlen;
uint8_t ms_id[IEEE80211_MESHID_LEN];
ieee80211_mesh_seq ms_seq; /* seq no for meshcntl */
uint16_t ms_neighbors;
uint8_t ms_ttl; /* mesh ttl set in packets */
#define IEEE80211_MESHFLAGS_AP 0x01 /* accept peers */
#define IEEE80211_MESHFLAGS_PORTAL 0x02 /* mesh portal role */
#define IEEE80211_MESHFLAGS_FWD 0x04 /* forward packets */
uint8_t ms_flags;
struct mtx ms_rt_lock;
struct callout ms_cleantimer;
TAILQ_HEAD(, ieee80211_mesh_route) ms_routes;
struct ieee80211_mesh_proto_metric *ms_pmetric;
struct ieee80211_mesh_proto_path *ms_ppath;
};
void ieee80211_mesh_attach(struct ieee80211com *);
void ieee80211_mesh_detach(struct ieee80211com *);
struct ieee80211_mesh_route *
ieee80211_mesh_rt_find(struct ieee80211vap *,
const uint8_t [IEEE80211_ADDR_LEN]);
struct ieee80211_mesh_route *
ieee80211_mesh_rt_add(struct ieee80211vap *,
const uint8_t [IEEE80211_ADDR_LEN]);
void ieee80211_mesh_rt_del(struct ieee80211vap *,
const uint8_t [IEEE80211_ADDR_LEN]);
void ieee80211_mesh_rt_flush(struct ieee80211vap *);
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 *);
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_ */