80 lines
3.7 KiB
C
80 lines
3.7 KiB
C
/*
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* The mrouted program is covered by the license in the accompanying file
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* named "LICENSE". Use of the mrouted program represents acceptance of
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* the terms and conditions listed in that file.
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*
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* The mrouted program is COPYRIGHT 1989 by The Board of Trustees of
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* Leland Stanford Junior University.
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*
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*
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* $Id$
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*/
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/*
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* User level Virtual Interface structure
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*
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* A "virtual interface" is either a physical, multicast-capable interface
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* (called a "phyint") or a virtual point-to-point link (called a "tunnel").
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* (Note: all addresses, subnet numbers and masks are kept in NETWORK order.)
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*/
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struct uvif {
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u_short uv_flags; /* VIFF_ flags defined below */
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u_char uv_metric; /* cost of this vif */
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u_char uv_admetric; /* advertised cost of this vif */
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u_int uv_rate_limit; /* rate limit on this vif */
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u_char uv_threshold; /* min ttl required to forward on vif */
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u_int32 uv_lcl_addr; /* local address of this vif */
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u_int32 uv_rmt_addr; /* remote end-point addr (tunnels only) */
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u_int32 uv_subnet; /* subnet number (phyints only) */
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u_int32 uv_subnetmask; /* subnet mask (phyints only) */
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u_int32 uv_subnetbcast;/* subnet broadcast addr (phyints only) */
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char uv_name[IFNAMSIZ]; /* interface name */
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struct listaddr *uv_groups; /* list of local groups (phyints only) */
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struct listaddr *uv_neighbors; /* list of neighboring routers */
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struct vif_acl *uv_acl; /* access control list of groups */
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int uv_leaf_timer; /* time until this vif is considrd leaf */
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struct phaddr *uv_addrs; /* Additional subnets on this vif */
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};
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#define VIFF_KERNEL_FLAGS (VIFF_TUNNEL|VIFF_SRCRT)
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#define VIFF_DOWN 0x0100 /* kernel state of interface */
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#define VIFF_DISABLED 0x0200 /* administratively disabled */
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#define VIFF_QUERIER 0x0400 /* I am the subnet's querier */
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#define VIFF_ONEWAY 0x0800 /* Maybe one way interface */
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#define VIFF_LEAF 0x1000 /* all neighbors are leaves */
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#define VIFF_IGMPV1 0x2000 /* Act as an IGMPv1 Router */
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struct phaddr {
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struct phaddr *pa_next;
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u_int32 pa_subnet; /* extra subnet */
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u_int32 pa_subnetmask; /* netmask of extra subnet */
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u_int32 pa_subnetbcast; /* broadcast of extra subnet */
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};
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struct vif_acl {
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struct vif_acl *acl_next; /* next acl member */
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u_int32 acl_addr; /* Group address */
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u_int32 acl_mask; /* Group addr. mask */
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};
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struct listaddr {
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struct listaddr *al_next; /* link to next addr, MUST BE FIRST */
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u_int32 al_addr; /* local group or neighbor address */
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u_long al_timer; /* for timing out group or neighbor */
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time_t al_ctime; /* neighbor creation time */
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u_int32 al_genid; /* generation id for neighbor */
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u_char al_pv; /* router protocol version */
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u_char al_mv; /* router mrouted version */
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u_long al_timerid; /* returned by set timer */
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u_long al_query; /* second query in case of leave */
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u_short al_old; /* time since heard old report */
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u_char al_flags; /* flags related to this neighbor */
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};
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#define NF_LEAF 0x01 /* This neighbor is a leaf */
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#define NF_PRUNE 0x02 /* This neighbor understands prunes */
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#define NF_GENID 0x04 /* I supply genid & rtrlist in probe*/
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#define NF_MTRACE 0x08 /* I can understand mtrace requests */
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#define NO_VIF ((vifi_t)MAXVIFS) /* An invalid vif index */
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