2016-04-08 04:16:19 +00:00
|
|
|
/* inet_ipv6.h
|
|
|
|
*
|
|
|
|
* Wireshark - Network traffic analyzer
|
|
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
|
|
* Copyright 1998 Gerald Combs
|
|
|
|
*
|
2018-02-07 11:26:45 +00:00
|
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
2016-04-08 04:16:19 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
#ifndef __INET_IPV6_H__
|
|
|
|
#define __INET_IPV6_H__
|
|
|
|
|
2016-07-29 20:35:03 +00:00
|
|
|
#include <glib.h>
|
|
|
|
|
|
|
|
#define IPv6_ADDR_SIZE 16
|
|
|
|
|
|
|
|
#define IPv6_HDR_SIZE 40
|
|
|
|
#define IPv6_FRAGMENT_HDR_SIZE 8
|
|
|
|
|
2017-10-26 08:50:00 +00:00
|
|
|
typedef struct e_in6_addr {
|
2016-07-29 20:35:03 +00:00
|
|
|
guint8 bytes[16]; /* 128 bit IPv6 address */
|
2017-10-26 08:50:00 +00:00
|
|
|
} ws_in6_addr;
|
2016-07-29 20:35:03 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Definition for internet protocol version 6.
|
|
|
|
* RFC 2460
|
|
|
|
*/
|
|
|
|
struct ws_ip6_hdr {
|
|
|
|
guint32 ip6h_vc_flow; /* version, class, flow */
|
|
|
|
guint16 ip6h_plen; /* payload length */
|
|
|
|
guint8 ip6h_nxt; /* next header */
|
|
|
|
guint8 ip6h_hlim; /* hop limit */
|
2017-10-26 08:50:00 +00:00
|
|
|
ws_in6_addr ip6h_src; /* source address */
|
|
|
|
ws_in6_addr ip6h_dst; /* destination address */
|
2016-07-29 20:35:03 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* 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 */
|
|
|
|
/* followed by up to 127 addresses */
|
2017-10-26 08:50:00 +00:00
|
|
|
ws_in6_addr ip6r0_addr[1];
|
2016-04-08 04:16:19 +00:00
|
|
|
};
|
|
|
|
|
2016-07-29 20:35:03 +00:00
|
|
|
/* 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 */
|
|
|
|
};
|
|
|
|
|
|
|
|
#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 */
|
|
|
|
|
|
|
|
|
2016-04-08 04:18:13 +00:00
|
|
|
/**
|
|
|
|
* Unicast Scope
|
|
|
|
* Note that we must check topmost 10 bits only, not 16 bits (see RFC2373).
|
|
|
|
*/
|
2017-10-26 09:23:37 +00:00
|
|
|
static inline gboolean in6_addr_is_linklocal(const ws_in6_addr *a)
|
2016-06-13 04:35:14 +00:00
|
|
|
{
|
|
|
|
return (a->bytes[0] == 0xfe) && ((a->bytes[1] & 0xc0) == 0x80);
|
2016-04-08 04:18:13 +00:00
|
|
|
}
|
|
|
|
|
2017-10-26 09:23:37 +00:00
|
|
|
static inline gboolean in6_addr_is_sitelocal(const ws_in6_addr *a)
|
2016-06-13 04:35:14 +00:00
|
|
|
{
|
|
|
|
return (a->bytes[0] == 0xfe) && ((a->bytes[1] & 0xc0) == 0xc0);
|
2016-04-08 04:18:13 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Multicast
|
|
|
|
*/
|
2017-10-26 09:23:37 +00:00
|
|
|
static inline gboolean in6_addr_is_multicast(const ws_in6_addr *a)
|
2016-06-13 04:35:14 +00:00
|
|
|
{
|
|
|
|
return a->bytes[0] == 0xff;
|
2016-04-08 04:18:13 +00:00
|
|
|
}
|
|
|
|
|
2016-04-08 04:16:19 +00:00
|
|
|
#endif
|