diff options
| author | Guy Harris <guy@alum.mit.edu> | 2002-10-25 23:23:28 +0000 |
|---|---|---|
| committer | Guy Harris <guy@alum.mit.edu> | 2002-10-25 23:23:28 +0000 |
| commit | daa0dd9f1a0978f250c41254a4c3f69024b2bbdb (patch) | |
| tree | 742f490c1021562eb6bc7cc6ca9432c4a6930ec7 /packet-ipv6.c | |
| parent | 86af47dd68245055354fa1b9eac58fb2b0159193 (diff) | |
Count ICMPv6 packets as ICMP when capturing.
Check the next header type - properly handling extension headers - in
"capture_ipv6()".
Get rid of the count of IPv6 packets - we break that down in
"capture_ipv6()" now.
Fix a typo.
svn path=/trunk/; revision=6510
Diffstat (limited to 'packet-ipv6.c')
| -rw-r--r-- | packet-ipv6.c | 94 |
1 files changed, 87 insertions, 7 deletions
diff --git a/packet-ipv6.c b/packet-ipv6.c index 64b57a08c8..d884100d49 100644 --- a/packet-ipv6.c +++ b/packet-ipv6.c @@ -1,7 +1,7 @@ /* packet-ipv6.c * Routines for IPv6 packet disassembly * - * $Id: packet-ipv6.c,v 1.89 2002/10/24 06:17:34 guy Exp $ + * $Id: packet-ipv6.c,v 1.90 2002/10/25 23:23:26 guy Exp $ * * Ethereal - Network traffic analyzer * By Gerald Combs <gerald@ethereal.com> @@ -124,11 +124,91 @@ static GHashTable *ipv6_fragment_table = NULL; void capture_ipv6(const guchar *pd, int offset, int len, packet_counts *ld) { - ld->ipv6++; - /* FIXME: We should count the actual ipv6 payload by protocol, - * but it looks like we need to replicate quite a few - * parts of the dissection stuff. - */ + guint8 nxt; + int advance; + + if (!BYTES_ARE_IN_FRAME(offset, len, 4+4+16+16)) { + ld->other++; + return; + } + nxt = pd[offset+6]; /* get the "next header" value */ + offset += 4+4+16+16; /* skip past the IPv6 header */ + len -= 4+4+16+16; + +again: + switch (nxt) { + case IP_PROTO_HOPOPTS: + case IP_PROTO_ROUTING: + case IP_PROTO_DSTOPTS: + if (!BYTES_ARE_IN_FRAME(offset, len, 2)) { + ld->other++; + return; + } + nxt = pd[offset]; + advance = (pd[offset+1] + 1) << 3; + if (!BYTES_ARE_IN_FRAME(offset, len, advance)) { + ld->other++; + return; + } + offset += advance; + len -= advance; + goto again; + case IP_PROTO_FRAGMENT: + if (!BYTES_ARE_IN_FRAME(offset, len, 2)) { + ld->other++; + return; + } + nxt = pd[offset]; + advance = 8; + if (!BYTES_ARE_IN_FRAME(offset, len, advance)) { + ld->other++; + return; + } + offset += advance; + len -= advance; + goto again; + case IP_PROTO_AH: + if (!BYTES_ARE_IN_FRAME(offset, len, 2)) { + ld->other++; + return; + } + nxt = pd[offset]; + advance = 8 + ((pd[offset+1] - 1) << 2); + if (!BYTES_ARE_IN_FRAME(offset, len, advance)) { + ld->other++; + return; + } + offset += advance; + len -= advance; + goto again; + } + + switch(nxt) { + case IP_PROTO_SCTP: + ld->sctp++; + break; + case IP_PROTO_TCP: + ld->tcp++; + break; + case IP_PROTO_UDP: + ld->udp++; + break; + case IP_PROTO_ICMP: + case IP_PROTO_ICMPV6: /* XXX - separate counters? */ + ld->icmp++; + break; + case IP_PROTO_OSPF: + ld->ospf++; + break; + case IP_PROTO_GRE: + ld->gre++; + break; + case IP_PROTO_VINES: + ld->vines++; + break; + default: + ld->other++; + } } static void @@ -217,7 +297,7 @@ dissect_frag6(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, } if (tree) { ti = proto_tree_add_text(tree, tvb, offset, len, - "Fragmention Header"); + "Fragmentation Header"); rthdr_tree = proto_item_add_subtree(ti, ett_ipv6); proto_tree_add_text(rthdr_tree, tvb, |