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/** @file
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __PACKET_IPV6_H__
#define __PACKET_IPV6_H__
#include <inttypes.h>
#include <wsutil/inet_addr.h>
#include <epan/conversation.h>
#define IPv6_ADDR_SIZE 16
#define IPv6_HDR_SIZE 40
#define IPv6_FRAGMENT_HDR_SIZE 8
/*
* Definition for internet protocol version 6.
* RFC 2460
*/
struct ws_ip6_hdr {
uint32_t ip6h_vc_flow; /* version, class, flow */
uint16_t ip6h_plen; /* payload length */
uint8_t ip6h_nxt; /* next header */
uint8_t ip6h_hlim; /* hop limit */
ws_in6_addr ip6h_src; /* source address */
ws_in6_addr ip6h_dst; /* destination address */
};
/*
* Extension Headers
*/
struct ws_ip6_ext {
unsigned char ip6e_nxt;
unsigned char ip6e_len;
};
/* Routing header */
struct ws_ip6_rthdr {
uint8_t ip6r_nxt; /* next header */
uint8_t ip6r_len; /* length in units of 8 octets */
uint8_t ip6r_type; /* routing type */
uint8_t ip6r_segleft; /* segments left */
/* followed by routing type specific data */
};
/* Type 0 Routing header */
struct ws_ip6_rthdr0 {
uint8_t ip6r0_nxt; /* next header */
uint8_t ip6r0_len; /* length in units of 8 octets */
uint8_t ip6r0_type; /* always zero */
uint8_t ip6r0_segleft; /* segments left */
uint8_t ip6r0_reserved; /* reserved field */
uint8_t ip6r0_slmap[3]; /* strict/loose bit map */
/* followed by up to 127 addresses */
ws_in6_addr ip6r0_addr[1];
};
/* Fragment header */
struct ws_ip6_frag {
uint8_t ip6f_nxt; /* next header */
uint8_t ip6f_reserved; /* reserved field */
uint16_t ip6f_offlg; /* offset, reserved, and flag */
uint32_t ip6f_ident; /* identification */
};
#define IP6F_OFF_MASK 0xfff8 /* mask out offset from _offlg */
#define IP6F_RESERVED_MASK 0x0006 /* reserved bits in ip6f_offlg */
#define IP6F_MORE_FRAG 0x0001 /* more-fragments flag */
struct ipv6_analysis {
/* Initial frame starting this conversation
*/
uint32_t initial_frame;
uint32_t stream;
};
WS_DLL_PUBLIC struct ipv6_analysis *get_ipv6_conversation_data(conversation_t *conv,
packet_info *pinfo);
#endif
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