-#ifndef IN_CLASSD
-#define IN_CLASSD(i) (((int32_t)(i) & 0xf0000000) == 0xe0000000)
-#endif
-
-/* (following from ipmulti/mrouted/prune.h) */
-
-/*
- * The packet format for a traceroute request.
- */
-struct tr_query {
- u_int tr_src; /* traceroute source */
- u_int tr_dst; /* traceroute destination */
- u_int tr_raddr; /* traceroute response address */
-#if defined(WORDS_BIGENDIAN) || (defined(BYTE_ORDER) && (BYTE_ORDER == BIG_ENDIAN))
- struct {
- u_int ttl : 8; /* traceroute response ttl */
- u_int qid : 24; /* traceroute query id */
- } q;
-#else
- struct {
- u_int qid : 24; /* traceroute query id */
- u_int ttl : 8; /* traceroute response ttl */
- } q;
-#endif
-};
-
-#define tr_rttl q.ttl
-#define tr_qid q.qid
-
-/*
- * Traceroute response format. A traceroute response has a tr_query at the
- * beginning, followed by one tr_resp for each hop taken.
- */
-struct tr_resp {
- u_int tr_qarr; /* query arrival time */
- u_int tr_inaddr; /* incoming interface address */
- u_int tr_outaddr; /* outgoing interface address */
- u_int tr_rmtaddr; /* parent address in source tree */
- u_int tr_vifin; /* input packet count on interface */
- u_int tr_vifout; /* output packet count on interface */
- u_int tr_pktcnt; /* total incoming packets for src-grp */
- u_char tr_rproto; /* routing proto deployed on router */
- u_char tr_fttl; /* ttl required to forward on outvif */
- u_char tr_smask; /* subnet mask for src addr */
- u_char tr_rflags; /* forwarding error codes */
-};
-
-/* defs within mtrace */
-#define TR_QUERY 1
-#define TR_RESP 2
-
-/* fields for tr_rflags (forwarding error codes) */
-#define TR_NO_ERR 0
-#define TR_WRONG_IF 1
-#define TR_PRUNED 2
-#define TR_OPRUNED 3
-#define TR_SCOPED 4
-#define TR_NO_RTE 5
-#define TR_NO_FWD 7
-#define TR_NO_SPACE 0x81
-#define TR_OLD_ROUTER 0x82
-
-/* fields for tr_rproto (routing protocol) */
-#define TR_PROTO_DVMRP 1
-#define TR_PROTO_MOSPF 2
-#define TR_PROTO_PIM 3
-#define TR_PROTO_CBT 4
-
-static void print_mtrace(register const u_char *bp, register u_int len)
-{
- register struct tr_query *tr = (struct tr_query *)(bp + 8);
-
- printf("mtrace %d: %s to %s reply-to %s", tr->tr_qid,
- ipaddr_string(&tr->tr_src), ipaddr_string(&tr->tr_dst),
- ipaddr_string(&tr->tr_raddr));
- if (IN_CLASSD(ntohl(tr->tr_raddr)))
- printf(" with-ttl %d", tr->tr_rttl);
-}
-
-static void print_mresp(register const u_char *bp, register u_int len)
-{
- register struct tr_query *tr = (struct tr_query *)(bp + 8);
-
- printf("mresp %d: %s to %s reply-to %s", tr->tr_qid,
- ipaddr_string(&tr->tr_src), ipaddr_string(&tr->tr_dst),
- ipaddr_string(&tr->tr_raddr));
- if (IN_CLASSD(ntohl(tr->tr_raddr)))
- printf(" with-ttl %d", tr->tr_rttl);
-}
-
-static void
-igmp_print(register const u_char *bp, register u_int len,
- register const u_char *bp2)
-{
- register const struct ip *ip;
-
- ip = (const struct ip *)bp2;
- (void)printf("%s > %s: ",
- ipaddr_string(&ip->ip_src),
- ipaddr_string(&ip->ip_dst));
-
- TCHECK2(bp[0], 8);
- switch (bp[0]) {
- case 0x11:
- (void)printf("igmp query");
- if (*(int *)&bp[4])
- (void)printf(" [gaddr %s]", ipaddr_string(&bp[4]));
- if (len != 8)
- (void)printf(" [len %d]", len);
- break;
- case 0x12:
- (void)printf("igmp report %s", ipaddr_string(&bp[4]));
- if (len != 8)
- (void)printf(" [len %d]", len);
- break;
- case 0x16:
- (void)printf("igmp nreport %s", ipaddr_string(&bp[4]));
- break;
- case 0x17:
- (void)printf("igmp leave %s", ipaddr_string(&bp[4]));
- break;
- case 0x13:
- (void)printf("igmp dvmrp");
- if (len < 8)
- (void)printf(" [len %d]", len);
- else
- dvmrp_print(bp, len);
- break;
- case 0x14:
- (void)printf("igmp pim");
- igmp_pim_print(bp, len);
- break;
- case 0x1e:
- print_mresp(bp, len);
- break;
- case 0x1f:
- print_mtrace(bp, len);
- break;
- default:
- (void)printf("igmp-%d", bp[0] & 0xf);
- break;
- }
- if ((bp[0] >> 4) != 1)
- (void)printf(" [v%d]", bp[0] >> 4);
-
- TCHECK2(bp[0], len);
- if (vflag) {
- /* Check the IGMP checksum */
- if (in_cksum((const u_short*)bp, len, 0))
- printf(" bad igmp cksum %x!", EXTRACT_16BITS(&bp[2]));
- }
- return;
-trunc:
- fputs("[|igmp]", stdout);
-}
-
projects / tcpdump / blobdiff