144 lines
4.3 KiB
C
144 lines
4.3 KiB
C
/* packet-ipv6.h
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* Definitions for IPv6 packet disassembly
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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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*
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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_IPV6_H_DEFINED__
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#define __PACKET_IPV6_H_DEFINED__
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#include <epan/ipv6.h>
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/* this definition makes trouble with Microsoft Platform SDK: ws2tcpip.h and is used nowhere */
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/*#define INET6_ADDRSTRLEN 46*/
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/*
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* Definition for internet protocol version 6.
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* RFC 2460
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*/
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struct ip6_hdr {
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union {
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struct ip6_hdrctl {
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guint32 ip6_un1_flow; /* version, class, flow */
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guint16 ip6_un1_plen; /* payload length */
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guint8 ip6_un1_nxt; /* next header */
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guint8 ip6_un1_hlim; /* hop limit */
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} ip6_un1;
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guint8 ip6_un2_vfc; /* 4 bits version, 4 bits class */
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} ip6_ctlun;
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struct e_in6_addr ip6_src; /* source address */
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struct e_in6_addr ip6_dst; /* destination address */
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};
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#define ip6_vfc ip6_ctlun.ip6_un2_vfc
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#define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow
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#define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen
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#define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt
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#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim
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#define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim
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/* Offsets of fields within an IPv6 header. */
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#define IP6H_CTL 0
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#define IP6H_CTL_FLOW 0
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#define IP6H_CTL_PLEN 4
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#define IP6H_CTL_NXT 6
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#define IP6H_CTL_HLIM 7
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#define IP6H_CTL_VFC 0
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#define IP6H_SRC 8
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#define IP6H_DST 24
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#define IPV6_FLOWINFO_MASK 0x0fffffff/* flow info (28 bits) */
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#define IPV6_FLOWLABEL_MASK 0x000fffff/* flow label (20 bits) */
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/*
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* Extension Headers
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*/
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struct ip6_ext {
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guchar ip6e_nxt;
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guchar ip6e_len;
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};
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/* Routing header */
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struct ip6_rthdr {
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guint8 ip6r_nxt; /* next header */
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guint8 ip6r_len; /* length in units of 8 octets */
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guint8 ip6r_type; /* routing type */
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guint8 ip6r_segleft; /* segments left */
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/* followed by routing type specific data */
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};
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/* Type 0 Routing header */
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struct ip6_rthdr0 {
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guint8 ip6r0_nxt; /* next header */
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guint8 ip6r0_len; /* length in units of 8 octets */
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guint8 ip6r0_type; /* always zero */
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guint8 ip6r0_segleft; /* segments left */
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guint8 ip6r0_reserved; /* reserved field */
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guint8 ip6r0_slmap[3]; /* strict/loose bit map */
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/* followed by up to 127 addresses */
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struct e_in6_addr ip6r0_addr[1];
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};
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/* Fragment header */
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struct ip6_frag {
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guint8 ip6f_nxt; /* next header */
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guint8 ip6f_reserved; /* reserved field */
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guint16 ip6f_offlg; /* offset, reserved, and flag */
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guint32 ip6f_ident; /* identification */
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};
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/* SHIM6 header */
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struct ip6_shim {
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guint8 ip6s_nxt; /* next header */
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guint8 ip6s_len; /* header extension length */
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guint8 ip6s_p; /* P field and first 7 bits of remainder */
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/* followed by shim6 specific data*/
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};
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#define IP6F_OFF_MASK 0xfff8 /* mask out offset from _offlg */
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#define IP6F_RESERVED_MASK 0x0006 /* reserved bits in ip6f_offlg */
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#define IP6F_MORE_FRAG 0x0001 /* more-fragments flag */
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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gboolean capture_ipv6(const guchar *, int, int, capture_packet_info_t *cpinfo, const union wtap_pseudo_header *pseudo_header);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __PACKET_IPV6_H_DEFINED__ */
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/*
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* Editor modelines
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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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* ex: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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