X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/75d10a57f74bb6fd14eccd90b06c0f70ba432362..60e8705242ef695d2039372768a934b0442b344f:/print-mpls.c diff --git a/print-mpls.c b/print-mpls.c index a2043eac..c6b0814f 100644 --- a/print-mpls.c +++ b/print-mpls.c @@ -28,7 +28,7 @@ #ifndef lint static const char rcsid[] _U_ = - "@(#) $Header: /tcpdump/master/tcpdump/print-mpls.c,v 1.13 2005-04-06 21:32:41 mcr Exp $ (LBL)"; + "@(#) $Header: /tcpdump/master/tcpdump/print-mpls.c,v 1.14 2005-07-05 09:38:19 hannes Exp $ (LBL)"; #endif #ifdef HAVE_CONFIG_H @@ -61,36 +61,45 @@ void mpls_print(const u_char *bp, u_int length) { const u_char *p; - u_int32_t v; + u_int32_t label_entry; + u_int16_t label_stack_depth = 0; p = bp; printf("MPLS"); do { - TCHECK2(*p, sizeof(v)); - v = EXTRACT_32BITS(p); - printf(" ("); /*)*/ - printf("label %u", MPLS_LABEL(v)); + TCHECK2(*p, sizeof(label_entry)); + label_entry = EXTRACT_32BITS(p); + printf("%s(label %u", + label_stack_depth ? "\n\t" : " ", + MPLS_LABEL(label_entry)); + label_stack_depth++; if (vflag && - MPLS_LABEL(v) < sizeof(mpls_labelname) / sizeof(mpls_labelname[0])) - printf(" (%s)", mpls_labelname[MPLS_LABEL(v)]); - printf(", exp %u", MPLS_EXP(v)); - if (MPLS_STACK(v)) + MPLS_LABEL(label_entry) < sizeof(mpls_labelname) / sizeof(mpls_labelname[0])) + printf(" (%s)", mpls_labelname[MPLS_LABEL(label_entry)]); + printf(", exp %u", MPLS_EXP(label_entry)); + if (MPLS_STACK(label_entry)) printf(", [S]"); - printf(", ttl %u", MPLS_TTL(v)); - /*(*/ - printf(")"); + printf(", ttl %u)", MPLS_TTL(label_entry)); - p += sizeof(v); - } while (!MPLS_STACK(v)); + p += sizeof(label_entry); + } while (!MPLS_STACK(label_entry)); - switch (MPLS_LABEL(v)) { + switch (MPLS_LABEL(label_entry)) { case 0: /* IPv4 explicit NULL label */ case 3: /* IPv4 implicit NULL label */ - ip_print(gndo, p, length - (p - bp)); + if (vflag>0) { + printf("\n\t"); + ip_print(gndo, p, length - (p - bp)); + } + else printf(", IP, length: %u",length); break; #ifdef INET6 case 2: /* IPv6 explicit NULL label */ - ip6_print(p, length - (p - bp)); + if (vflag>0) { + printf("\n\t"); + ip6_print(p, length - (p - bp)); + } + else printf(", IPv6, length: %u",length); break; #endif default: @@ -107,7 +116,7 @@ mpls_print(const u_char *bp, u_int length) * which cisco by default sends MPLS encapsulated */ - if (MPLS_STACK(v)) { /* only do this if the stack bit is set */ + if (MPLS_STACK(label_entry)) { /* only do this if the stack bit is set */ switch(*p) { case 0x45: case 0x46: