forked from osmocom/wireshark
26a3573f90
This adds limited support for heuristic subdissectors with IPv6. The initial motivation is STT but it should transparently work for other protocols using IP heuristic dissectors in a manner similar to the non-heuristic dissectors. The limitation is in regards to IPv6 extension headers. IPv6 has multiple checks against the next protocol table when determining when the protocol is an unknown extension header or not. This assumes that the check is cheap and has no side effects, neither of which is true for heuristic dissectors. As a compromise, this assumes that the next protocol is registered as protocol, even if is not the one that is ultimately dissected. Although not strictly correct, in practice this is true for existing protocols and likely future ones because the heuristic dissectors are overriding non-heuristic ones. Change-Id: Iff8cfc148ced5ca16191cc2b1879ad87e38d23cd Reviewed-on: https://code.wireshark.org/review/8197 Petri-Dish: Pascal Quantin <pascal.quantin@gmail.com> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com>
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
/* packet-ip.h
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* Definitions for IP packet disassembly structures and routines
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __PACKET_IP_H__
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#define __PACKET_IP_H__
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#include "ws_symbol_export.h"
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extern int proto_ip;
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typedef struct _ws_ip
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{
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guint8 ip_v_hl; /* combines ip_v and ip_hl */
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guint8 ip_tos;
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guint16 ip_len;
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guint16 ip_id;
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guint16 ip_off;
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guint8 ip_ttl;
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guint8 ip_p;
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guint16 ip_sum;
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address ip_src;
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address ip_dst;
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} ws_ip;
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void capture_ip(const guchar *, int, int, packet_counts *);
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gboolean ip_try_dissect(gboolean heur_first, tvbuff_t *tvb,
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packet_info *pinfo, proto_tree *tree, ws_ip *iph);
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/* Export the DSCP extended value-string table for other protocols */
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WS_DLL_PUBLIC value_string_ext dscp_vals_ext;
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#endif
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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