On Wed, Oct 13, 1999 at 01:09:39AM -0500, itojun@xxxxxxxxxx wrote:
>
>
> Here's decoding code for pim (protocol independent multicast).
> test data is included.
Our first protocol-within-a-protocol! In packet-pim.c, in line 264,
when you call the next dissector (ipv4 or ipv6), can we pass it
tree instead of pimopt_tree, so that those dissectors put their
protocols at the top level of the protocol tree?
Then in that trace that you sent, we'l' have packets like:
Frame #3:
+ Frame (1124 on wire, 1124 captured)
+ Null/Loopback
+ IPv6
+ PIM
+ IPv6
+ UDP
+ Data
The display filters *should* handle multiple instances of protocols
in the same packet, but probably not as well as users might want.
The proposed patch is attached.
--gilbert
Index: packet-pim.c
===================================================================
RCS file: /usr/local/cvsroot/ethereal/packet-pim.c,v
retrieving revision 1.1
diff -u -r1.1 packet-pim.c
--- packet-pim.c 1999/10/13 06:47:45 1.1
+++ packet-pim.c 1999/10/13 14:37:29
@@ -263,10 +263,10 @@
ip = &pd[flagoff + sizeof(guint32)];
switch((*ip & 0xf0) >> 4) {
case 4: /* IPv4 */
- dissect_ip(pd, ip - pd, fd, pimopt_tree);
+ dissect_ip(pd, ip - pd, fd, tree);
break;
case 6: /* IPv6 */
- dissect_ipv6(pd, ip - pd, fd, pimopt_tree);
+ dissect_ipv6(pd, ip - pd, fd, tree);
break;
default:
proto_tree_add_text(pimopt_tree,
