89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/** @file
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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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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef __PACKET_IPV6_H__
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#define __PACKET_IPV6_H__
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#include <inttypes.h>
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#include <wsutil/inet_addr.h>
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#include <epan/conversation.h>
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#define IPv6_ADDR_SIZE 16
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#define IPv6_HDR_SIZE 40
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#define IPv6_FRAGMENT_HDR_SIZE 8
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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 ws_ip6_hdr {
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uint32_t ip6h_vc_flow; /* version, class, flow */
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uint16_t ip6h_plen; /* payload length */
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uint8_t ip6h_nxt; /* next header */
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uint8_t ip6h_hlim; /* hop limit */
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ws_in6_addr ip6h_src; /* source address */
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ws_in6_addr ip6h_dst; /* destination address */
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};
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/*
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* Extension Headers
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*/
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struct ws_ip6_ext {
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unsigned char ip6e_nxt;
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unsigned char ip6e_len;
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};
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/* Routing header */
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struct ws_ip6_rthdr {
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uint8_t ip6r_nxt; /* next header */
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uint8_t ip6r_len; /* length in units of 8 octets */
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uint8_t ip6r_type; /* routing type */
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uint8_t 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 ws_ip6_rthdr0 {
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uint8_t ip6r0_nxt; /* next header */
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uint8_t ip6r0_len; /* length in units of 8 octets */
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uint8_t ip6r0_type; /* always zero */
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uint8_t ip6r0_segleft; /* segments left */
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uint8_t ip6r0_reserved; /* reserved field */
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uint8_t ip6r0_slmap[3]; /* strict/loose bit map */
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/* followed by up to 127 addresses */
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ws_in6_addr ip6r0_addr[1];
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};
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/* Fragment header */
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struct ws_ip6_frag {
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uint8_t ip6f_nxt; /* next header */
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uint8_t ip6f_reserved; /* reserved field */
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uint16_t ip6f_offlg; /* offset, reserved, and flag */
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uint32_t ip6f_ident; /* identification */
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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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struct ipv6_analysis {
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/* Initial frame starting this conversation
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*/
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guint32 initial_frame;
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guint32 stream;
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};
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WS_DLL_PUBLIC struct ipv6_analysis *get_ipv6_conversation_data(conversation_t *conv,
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packet_info *pinfo);
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#endif
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