diff options
| author | Guy Harris <guy@alum.mit.edu> | 2001-10-01 08:29:37 +0000 |
|---|---|---|
| committer | Guy Harris <guy@alum.mit.edu> | 2001-10-01 08:29:37 +0000 |
| commit | d627904aba3732e3badbca8467f88758c2668b25 (patch) | |
| tree | 469015385bd66c0d924f444094baf9b94145393e /epan/packet_info.h | |
| parent | 3869ff8bfb9804ff27c558196efffbd75dc27263 (diff) | |
Have a flag in the "packet_info" structure, which indicates whether the
stuff currently being dissected is part of a packet included in an error
packet (e.g., an ICMP Unreachable packet). Have the TCP dissector not
bother doing reassembly if the TCP segment is part of an error packet,
rather than an actual TCP transmission; other dissectors might want to
treat those packets specially as well.
Add to the "tcpinfo" structure a flag indicating whether the URG flag
was set, rather than having the zero or non-zero value of the urgent
pointer indicate that. (Yes, at least as I read RFC 793, a zero urgent
pointer value isn't useful, as it means "the stuff before this segment
is urgent", but it's certainly possible to put onto the wire a TCP
segment with URG set and a zero urgent pointer.)
Don't dissect the TCP header by grabbing the entire header with
"tvb_memcpy()" and then pulling stuff out of it - extract stuff with
individual tvbuff calls, and put stuff into the protocol tree and the
Info column as we extract it, so that we can dissect a partial header.
This lets us, for example, get the source and destination ports from the
TCP header of the part of a TCP segment included in a minimum-length
ICMPv4 error packet.
svn path=/trunk/; revision=3986
Diffstat (limited to 'epan/packet_info.h')
| -rw-r--r-- | epan/packet_info.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/epan/packet_info.h b/epan/packet_info.h index a80bb6b4bb..218aa92550 100644 --- a/epan/packet_info.h +++ b/epan/packet_info.h @@ -1,7 +1,7 @@ /* packet_info.h * Definitions for packet info structures and routines * - * $Id: packet_info.h,v 1.6 2001/09/13 07:53:53 guy Exp $ + * $Id: packet_info.h,v 1.7 2001/10/01 08:29:37 guy Exp $ * * Ethereal - Network traffic analyzer * By Gerald Combs <gerald@ethereal.com> @@ -104,6 +104,7 @@ typedef struct _packet_info { guint32 ipproto; /* IP protocol, if this is an IP packet */ guint32 ipxptype; /* IPX packet type, if this is an IPX packet */ gboolean fragmented; /* TRUE if the protocol is only a fragment */ + gboolean in_error_pkt; /* TRUE if we're inside an {ICMP,CLNP,...} error packet */ port_type ptype; /* type of the following two port numbers */ guint32 srcport; /* source port */ guint32 destport; /* destination port */ |