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124 lines
4.0 KiB
C
124 lines
4.0 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: prune.h,v 1.2 1994/09/08 02:51:24 wollman Exp $
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*/
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/*
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* Macro for copying the user-level cache table to the kernel
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* level table variable passed on by the setsock option
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*/
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#define COPY_TABLES(from, to) { \
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register u_int _i; \
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(to).mfcc_origin.s_addr = (from)->kt_origin; \
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(to).mfcc_mcastgrp.s_addr = (from)->kt_mcastgrp; \
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(to).mfcc_originmask.s_addr = (from)->kt_originmask; \
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(to).mfcc_parent = (from)->kt_parent; \
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for (_i = 0; _i < numvifs; _i++) \
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(to).mfcc_ttls[_i] = (from)->kt_ttls[_i]; \
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};
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/*
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* User level Kernel Cache Table structure
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*
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* A copy of the kernel table is kept at the user level. Modifications are
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* made to this table and then passed on to the kernel. A timeout value is
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* an extra field in the user level table.
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*
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*/
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struct ktable
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{
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struct ktable *kt_next; /* pointer to the next entry */
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u_long kt_origin; /* subnet origin of multicasts */
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u_long kt_mcastgrp; /* multicast group associated */
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u_long kt_originmask; /* subnet mask for origin */
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vifi_t kt_parent; /* incoming vif */
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u_long kt_gateway; /* upstream router */
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vifbitmap_t kt_children; /* outgoing children vifs */
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vifbitmap_t kt_leaves; /* subset of outgoing children vifs */
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vifbitmap_t kt_scope; /* scoped interfaces */
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u_char kt_ttls[MAXVIFS]; /* ttl vector for forwarding */
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vifbitmap_t kt_grpmems; /* forw. vifs for src, grp */
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int kt_timer; /* for timing out entry in cache */
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struct prunlst *kt_rlist; /* router list nghboring this rter */
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u_short kt_prun_count; /* count of total no. of prunes */
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int kt_prsent_timer; /* prune lifetime timer */
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u_int kt_grftsnt; /* graft sent upstream */
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};
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/*
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* structure to store incoming prunes
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*/
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struct prunlst
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{
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struct prunlst *rl_next;
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u_long rl_router;
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u_long rl_router_subnet;
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vifi_t rl_vifi;
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int rl_timer;
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};
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struct tr_query {
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u_long tr_src; /* traceroute source */
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u_long tr_dst; /* traceroute destination */
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u_long tr_raddr; /* traceroute response address */
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struct {
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u_int ttl : 8; /* traceroute response ttl */
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u_int qid : 24; /* traceroute query id */
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} q;
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} tr_query;
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#define tr_rttl q.ttl
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#define tr_qid q.qid
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struct tr_resp {
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u_long tr_qarr; /* query arrival time */
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u_long tr_inaddr; /* incoming interface address */
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u_long tr_outaddr; /* outgoing interface address */
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u_long tr_rmtaddr; /* parent address in source tree */
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u_long tr_vifin; /* input packet count on interface */
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u_long tr_vifout; /* output packet count on interface */
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u_long tr_pktcnt; /* total incoming packets for src-grp */
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u_char tr_rproto; /* routing protocol deployed on router */
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u_char tr_fttl; /* ttl required to forward on outvif */
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u_char tr_smask; /* subnet mask for src addr */
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u_char tr_rflags; /* forwarding error codes */
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} tr_resp;
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/* defs within mtrace */
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#define QUERY 1
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#define RESP 2
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#define QLEN sizeof(struct tr_query)
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#define RLEN sizeof(struct tr_resp)
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/* fields for tr_rflags (forwarding error codes) */
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#define TR_NO_ERR 0x0
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#define TR_WRONG_IF 0x1
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#define TR_PRUNED 0x2
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#define TR_SCOPED 0x4
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#define TR_NO_RTE 0x5
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/* fields for tr_rproto (routing protocol) */
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#define PROTO_DVMRP 0x1
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#define PROTO_MOSPF 0x2
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#define PROTO_PIM 0x3
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#define PROTO_CBT 0x4
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#define MASK_TO_VAL(x, i) { \
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(i) = 0; \
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while ((x) << (i)) \
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(i)++; \
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}
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#define VAL_TO_MASK(x, i) { \
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x = ~((1 << (32 - (i))) - 1); \
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}
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