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/* packet-ipv6.h
* Definitions for IPv6 packet disassembly
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
*
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __PACKET_IPV6_H_DEFINED__
#define __PACKET_IPV6_H_DEFINED__
#include <epan/ipv6-utils.h>
/* this definition makes trouble with Microsoft Platform SDK: ws2tcpip.h and is used nowhere */
/*#define INET6_ADDRSTRLEN 46*/
/*
* Definition for internet protocol version 6.
* RFC 2460
*/
struct ip6_hdr {
union {
struct ip6_hdrctl {
guint32 ip6_un1_flow; /* version, class, flow */
guint16 ip6_un1_plen; /* payload length */
guint8 ip6_un1_nxt; /* next header */
guint8 ip6_un1_hlim; /* hop limit */
} ip6_un1;
guint8 ip6_un2_vfc; /* 4 bits version, 4 bits class */
} ip6_ctlun;
struct e_in6_addr ip6_src; /* source address */
struct e_in6_addr ip6_dst; /* destination address */
};
#define ip6_vfc ip6_ctlun.ip6_un2_vfc
#define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow
#define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen
#define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt
#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim
#define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim
/* Offsets of fields within an IPv6 header. */
#define IP6H_CTL 0
#define IP6H_CTL_FLOW 0
#define IP6H_CTL_PLEN 4
#define IP6H_CTL_NXT 6
#define IP6H_CTL_HLIM 7
#define IP6H_CTL_VFC 0
#define IP6H_SRC 8
#define IP6H_DST 24
#define IPV6_FLOWINFO_MASK 0x0fffffff /* flow info (28 bits) */
#define IPV6_FLOWLABEL_MASK 0x000fffff /* flow label (20 bits) */
/*
* Extension Headers
*/
struct ip6_ext {
guchar ip6e_nxt;
guchar ip6e_len;
};
/* Routing header */
struct ip6_rthdr {
guint8 ip6r_nxt; /* next header */
guint8 ip6r_len; /* length in units of 8 octets */
guint8 ip6r_type; /* routing type */
guint8 ip6r_segleft; /* segments left */
/* followed by routing type specific data */
};
/* Type 0 Routing header */
struct ip6_rthdr0 {
guint8 ip6r0_nxt; /* next header */
guint8 ip6r0_len; /* length in units of 8 octets */
guint8 ip6r0_type; /* always zero */
guint8 ip6r0_segleft; /* segments left */
guint8 ip6r0_reserved; /* reserved field */
guint8 ip6r0_slmap[3]; /* strict/loose bit map */
struct e_in6_addr ip6r0_addr[1]; /* up to 23 addresses */
};
/* Fragment header */
struct ip6_frag {
guint8 ip6f_nxt; /* next header */
guint8 ip6f_reserved; /* reserved field */
guint16 ip6f_offlg; /* offset, reserved, and flag */
guint32 ip6f_ident; /* identification */
};
/* SHIM6 control message types */
#define SHIM6_TYPE_I1 0x01 /* 0 000 0001 */
#define SHIM6_TYPE_R1 0x02 /* 0 000 0010 */
#define SHIM6_TYPE_I2 0x03 /* 0 000 0011 */
#define SHIM6_TYPE_R2 0x04 /* 0 000 0100 */
#define SHIM6_TYPE_R1BIS 0x05 /* 0 000 0101 */
#define SHIM6_TYPE_I2BIS 0x06 /* 0 000 0110 */
#define SHIM6_TYPE_UPD_REQ 0x40 /* 0 100 0000 = 64 */
#define SHIM6_TYPE_UPD_ACK 0x41 /* 0 100 0001 = 65 */
#define SHIM6_TYPE_KEEPALIVE 0x42 /* 0 100 0010 = 66 */
#define SHIM6_TYPE_PROBE 0x43 /* 0 100 0011 = 67 */
/* SHIM6 Options */
#define SHIM6_OPT_RESPVAL 0x01 /* 0 000 0001 */
#define SHIM6_OPT_LOCLIST 0x02 /* 0 000 0010 */
#define SHIM6_OPT_LOCPREF 0x03 /* 0 000 0011 */
#define SHIM6_OPT_CGAPDM 0x04 /* 0 000 0100 */
#define SHIM6_OPT_CGASIG 0x05 /* 0 000 0101 */
#define SHIM6_OPT_ULIDPAIR 0x06 /* 0 000 0110 */
#define SHIM6_OPT_FII 0x07 /* 0 000 0111 */
/* SHIM6 Bitmasks */
#define SHIM6_BITMASK_P 0x80 /* 1 000 0000 */
#define SHIM6_BITMASK_TYPE 0x7F /* 0 111 1111 */
#define SHIM6_BITMASK_PROTOCOL 0x01 /* 0 000 0001 */
#define SHIM6_BITMASK_SPECIFIC 0xFE /* 1 111 1110 */
#define SHIM6_BITMASK_R 0x80 /* 1 000 0000 */
#define SHIM6_BITMASK_CT 0x7F /* 0 111 1111 */
#define SHIM6_BITMASK_OPT_TYPE 0xFFFE /* 1 111 1111 1 111 1110 */
#define SHIM6_BITMASK_CRITICAL 0x01 /* 0 000 0001 */
#define SHIM6_BITMASK_PRECVD 0xF0 /* 1 111 0000 */
#define SHIM6_BITMASK_PSENT 0x0F /* 0 000 1111 */
#define SHIM6_BITMASK_STA 0xC0 /* 1 100 0000 */
/* SHIM6 Verification Methods */
#define SHIM6_VERIF_HBA 0x01 /* 0 000 0001 */
#define SHIM6_VERIF_CGA 0x02 /* 0 000 0010 */
/* SHIM6 Flags */
#define SHIM6_FLAG_BROKEN 0x01 /* 0 000 0001 */
#define SHIM6_FLAG_TEMPORARY 0x02 /* 0 000 0010 */
/* SHIM6 REAP States */
#define SHIM6_REAP_OPERATIONAL 0x00 /* 0 000 0000 */
#define SHIM6_REAP_EXPLORING 0x01 /* 0 000 0001 */
#define SHIM6_REAP_INBOUNDOK 0x02 /* 0 000 0010 */
/* SHIM6 header */
struct ip6_shim {
guint8 ip6s_nxt; /* next header */
guint8 ip6s_len; /* header extension length */
guint8 ip6s_p; /* P field and first 7 bits of remainder */
/* followed by shim6 specific data*/
};
#define IP6F_OFF_MASK 0xfff8 /* mask out offset from _offlg */
#define IP6F_OFF_SHIFT 3 /* right-shift offset by this many bits */
#define IP6F_RESERVED_MASK 0x0006 /* reserved bits in ip6f_offlg */
#define IP6F_MORE_FRAG 0x0001 /* more-fragments flag */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
void capture_ipv6(const guchar *, int, int, packet_counts *);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __PACKET_IPV6_H_DEFINED__ */
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