7791505168
To perform IPv6 defragmentation we need to compute the IPv6 fragment header payload length by subtracting the length of intermediate extension headers from the IPv6 payload length. Add a new frag_plen field to ipv6_pinfo_t to do that instead of (ab)using struct ws_ip. Note: The RFC 2460 rules for fragment header order are stricter than the code suggests but that shouldn't be a problem here. Change-Id: I76f3cb3a1a29d96b080d3d53c0f493f9d0b2786c Reviewed-on: https://code.wireshark.org/review/16637 Petri-Dish: João Valverde <j@v6e.pt> Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org> Reviewed-by: João Valverde <j@v6e.pt>
79 lines
2.8 KiB
C
79 lines
2.8 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_ver; /* 4 or 6 */
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guint8 ip_tos; /* IPv4: type of service; IPv6: traffic class */
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guint32 ip_flw; /* IPv4: (zero); IPv6: flow label */
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guint32 ip_len; /* IPv4: total length; IPv6: payload length */
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guint16 ip_id; /* IPv4: identification; IPv6: (zero) */
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guint16 ip_off; /* IPv4: fragment offset; IPv6: (zero) */
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guint8 ip_ttl; /* IPv4: time-to-live; IPv6: hop limit */
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guint8 ip_nxt; /* IPv4: protocol; IPv6: next header */
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guint16 ip_sum; /* IPv4: checksum; IPv6: (zero) */
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address ip_src; /* source address */
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address ip_dst; /* destination address */
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} ws_ip;
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/* Differentiated Services Codepoint */
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#define IPDSFIELD_DSCP_MASK 0xFC
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#define IPDSFIELD_DSCP(dsfield) (((dsfield) & IPDSFIELD_DSCP_MASK) >> 2)
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/* Explicit Congestion Notification */
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#define IPDSFIELD_ECN_MASK 0x03
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#define IPDSFIELD_ECN(dsfield) ((dsfield) & IPDSFIELD_ECN_MASK)
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gboolean capture_ip(const guchar *, int, int, capture_packet_info_t *cpinfo, const union wtap_pseudo_header *pseudo_header);
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gboolean ip_try_dissect(gboolean heur_first, guint nxt, tvbuff_t *tvb,
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packet_info *pinfo, proto_tree *tree, ws_ip *iph);
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/* Export the DSCP/ECN extended value-string table for other protocols */
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WS_DLL_PUBLIC value_string_ext dscp_vals_ext;
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WS_DLL_PUBLIC value_string_ext ecn_vals_ext;
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WS_DLL_PUBLIC value_string_ext dscp_short_vals_ext;
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WS_DLL_PUBLIC value_string_ext ecn_short_vals_ext;
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#endif /* __PACKET_IP_H__ */
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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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