diff options
| author | Guy Harris <guy@alum.mit.edu> | 2002-10-15 17:19:06 +0000 |
|---|---|---|
| committer | Guy Harris <guy@alum.mit.edu> | 2002-10-15 17:19:06 +0000 |
| commit | a03e90ad09ea893117ab0ab41aec2f8955a19b7b (patch) | |
| tree | 6d7fe5550b6f943e06f5ee9d0275a96ac11615d6 /packet-bgp.c | |
| parent | 01bd6435e495d3b26a7a888031a23d528b069e87 (diff) | |
From Hannes Gredler: dissect the graceful restart capability in BGP OPEN
messages.
svn path=/trunk/; revision=6430
Diffstat (limited to 'packet-bgp.c')
| -rw-r--r-- | packet-bgp.c | 62 |
1 files changed, 59 insertions, 3 deletions
diff --git a/packet-bgp.c b/packet-bgp.c index 2280cdcbff..0e4e85dd84 100644 --- a/packet-bgp.c +++ b/packet-bgp.c @@ -2,7 +2,7 @@ * Routines for BGP packet dissection. * Copyright 1999, Jun-ichiro itojun Hagino <itojun@itojun.org> * - * $Id: packet-bgp.c,v 1.70 2002/10/15 03:47:47 gerald Exp $ + * $Id: packet-bgp.c,v 1.71 2002/10/15 17:19:06 guy Exp $ * * Supports: * RFC1771 A Border Gateway Protocol 4 (BGP-4) @@ -202,7 +202,7 @@ static const value_string bgpattr_nlri_safi[] = { { SAFNUM_UNICAST, "Unicast" }, { SAFNUM_MULCAST, "Multicast" }, { SAFNUM_UNIMULC, "Unicast+Multicast" }, - { SAFNUM_MPLS_LABEL, "MPLS Labeled Prefix"}, + { SAFNUM_MPLS_LABEL, "Labeled Unicast"}, { SAFNUM_LAB_VPNUNICAST, "Labeled VPN Unicast" }, /* draft-rosen-rfc2547bis-03 */ { SAFNUM_LAB_VPNMULCAST, "Labeled VPN Multicast" }, { SAFNUM_LAB_VPNUNIMULC, "Labeled VPN Unicast+Multicast" }, @@ -674,7 +674,7 @@ dissect_bgp_open(tvbuff_t *tvb, int offset, proto_tree *tree) int ptype; /* parameter type */ int plen; /* parameter length */ int ctype; /* capability type */ - int clen; /* capability length */ + int clen,tclen;/* capability length */ int cend; /* capabilities end */ int ostart; /* options start */ int oend; /* options end */ @@ -814,6 +814,62 @@ dissect_bgp_open(tvbuff_t *tvb, int offset, proto_tree *tree) p++; } break; + case BGP_CAPABILITY_GRACEFUL_RESTART: + ti = proto_tree_add_text(subtree1, tvb, p - 2, + 2 + clen, "Graceful Restart capability (%u %s)", 2 + clen, + (clen == 1) ? "byte" : "bytes"); + subtree2 = proto_item_add_subtree(ti, ett_bgp_option); + proto_tree_add_text(subtree2, tvb, p - 2, + 1, "Capability code: Graceful Restart (%d)", ctype); + if (clen < 6) { + proto_tree_add_text(subtree2, tvb, p, + clen, "Capability value: Invalid"); + } + else { + proto_tree_add_text(subtree2, tvb, p - 1, + 1, "Capability length: %u %s", clen, + (clen == 1) ? "byte" : "bytes"); + ti = proto_tree_add_text(subtree2, tvb, p, + clen, "Capability value"); + subtree3 = proto_item_add_subtree(ti, + ett_bgp_option); + /* Timers */ + i = tvb_get_ntohs(tvb, p); + proto_tree_add_text(subtree3, tvb, p, + 2, "Restart Flags: [%s], Restart Time %us", + (i&0x8000) ? "R" : "none", + i&0xfff); + p += 2; + tclen=clen-2; + /* + * what follows is alist of AFI/SAFI/flag triplets + * read it until the TLV ends + */ + while(tclen >=4) { + /* AFI */ + i = tvb_get_ntohs(tvb, p); + proto_tree_add_text(subtree3, tvb, p, + 2, "Address family identifier: %s (%u)", + val_to_str(i, afn_vals, "Unknown"), i); + p += 2; + /* SAFI */ + i = tvb_get_guint8(tvb, p); + proto_tree_add_text(subtree3, tvb, p, + 1, "Subsequent address family identifier: %s (%u)", + val_to_str(i, bgpattr_nlri_safi, + i >= 128 ? "Vendor specific" : "Unknown"), i); + p++; + /* flags */ + i = tvb_get_guint8(tvb, p); + proto_tree_add_text(subtree3, tvb, p, + 1, "Preserve forwarding state: %s", + (i&0x80) ? "yes" : "no"); + p++; + tclen-=4; + } + } + p += clen; + break; case BGP_CAPABILITY_ROUTE_REFRESH_CISCO: case BGP_CAPABILITY_ROUTE_REFRESH: ti = proto_tree_add_text(subtree1, tvb, p - 2, |