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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* ip6.h - Common structures and definitions as defined by
* advanced BSD API.
*/
#ifndef _NETINET_IP6_H
#define _NETINET_IP6_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/types.h>
#include <netinet/in.h>
struct ip6_hdr {
union {
struct ip6_hdrctl {
uint32_t ip6_un1_flow; /* 4 bits version, */
/* 8 bits tclass, and */
/* 20 bits flow-ID */
uint16_t ip6_un1_plen; /* payload length */
uint8_t ip6_un1_nxt; /* next header */
uint8_t ip6_un1_hlim; /* hop limit */
} ip6_un1;
uint8_t ip6_un2_vfc; /* 4 bits version and */
/* top 4 bits of tclass */
} ip6_ctlun;
struct in6_addr ip6_src; /* source address */
struct in6_addr ip6_dst; /* destination address */
};
typedef struct ip6_hdr ip6_t;
#define ip6_vfc ip6_ctlun.ip6_un2_vfc /* 4 bits version and */
/* top 4 bits of tclass */
#define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow
#define ip6_vcf ip6_flow /* Version, tclass, flow-ID */
#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
/* Hop-by-Hop options header */
struct ip6_hbh {
uint8_t ip6h_nxt; /* next header */
uint8_t ip6h_len; /* length in units of 8 octets */
/* followed by options */
};
typedef struct ip6_hbh ip6_hbh_t;
/* Destination options header */
struct ip6_dest {
uint8_t ip6d_nxt; /* next header */
uint8_t ip6d_len; /* length in units of 8 octets */
/* followed by options */
};
typedef struct ip6_dest ip6_dest_t;
/* Routing header */
struct 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 */
};
typedef struct ip6_rthdr ip6_rthdr_t;
/* Type 0 Routing header */
struct 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 */
uint32_t ip6r0_reserved; /* reserved field */
};
typedef struct ip6_rthdr0 ip6_rthdr0_t;
/* Fragment header */
struct 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 */
};
typedef struct ip6_frag ip6_frag_t;
/* ip6f_offlg field related constants (in network byte order) */
#ifdef _BIG_ENDIAN
#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 */
#else
#define IP6F_OFF_MASK 0xf8ff /* mask out offset from _offlg */
#define IP6F_RESERVED_MASK 0x0600 /* reserved bits in ip6f_offlg */
#define IP6F_MORE_FRAG 0x0100 /* more-fragments flag */
#endif
/* IPv6 options */
struct ip6_opt {
uint8_t ip6o_type;
uint8_t ip6o_len;
};
/*
* The high-order 3 bits of the option type define the behavior
* when processing an unknown option and whether or not the option
* content changes in flight.
*/
#define IP6OPT_TYPE(o) ((o) & 0xc0)
#define IP6OPT_TYPE_SKIP 0x00
#define IP6OPT_TYPE_DISCARD 0x40
#define IP6OPT_TYPE_FORCEICMP 0x80
#define IP6OPT_TYPE_ICMP 0xc0
#define IP6OPT_MUTABLE 0x20
#define IP6OPT_PAD1 0x00 /* 00 0 00000 */
#define IP6OPT_PADN 0x01 /* 00 0 00001 */
#define IP6OPT_JUMBO 0xc2 /* 11 0 00010 = 194 */
#define IP6OPT_NSAP_ADDR 0xc3 /* 11 0 00011 */
#define IP6OPT_TUNNEL_LIMIT 0x04 /* 00 0 00100 */
#define IP6OPT_ROUTER_ALERT 0x05 /* 00 0 00101 */
#define IP6OPT_BINDING_UPDATE 0xc6 /* 11 0 00110 */
#define IP6OPT_BINDING_ACK 0x07 /* 00 0 00111 */
#define IP6OPT_BINDING_REQ 0x08 /* 00 0 01000 */
#define IP6OPT_HOME_ADDRESS 0xc9 /* 11 0 01001 */
#define IP6OPT_EID 0x8a /* 10 0 01010 */
#define IP6OPT_LS 0x0a /* 00 0 01010 */
#define IP6_MAX_OPT_LENGTH 255
/* Jumbo Payload Option */
struct ip6_opt_jumbo {
uint8_t ip6oj_type;
uint8_t ip6oj_len;
uint8_t ip6oj_jumbo_len[4];
};
#define IP6OPT_JUMBO_LEN 6
/* NSAP Address Option */
struct ip6_opt_nsap {
uint8_t ip6on_type;
uint8_t ip6on_len;
uint8_t ip6on_src_nsap_len;
uint8_t ip6on_dst_nsap_len;
/* Followed by source NSAP */
/* Followed by destination NSAP */
};
/* Tunnel Limit Option */
struct ip6_opt_tunnel {
uint8_t ip6ot_type;
uint8_t ip6ot_len;
uint8_t ip6ot_encap_limit;
};
/* Router Alert Option */
struct ip6_opt_router {
uint8_t ip6or_type;
uint8_t ip6or_len;
uint8_t ip6or_value[2];
};
/* Router alert values (in network byte order) */
#ifdef _BIG_ENDIAN
#define IP6_ALERT_MLD 0x0000
#define IP6_ALERT_RSVP 0x0001
#define IP6_ALERT_AN 0x0002
#else
#define IP6_ALERT_MLD 0x0000
#define IP6_ALERT_RSVP 0x0100
#define IP6_ALERT_AN 0x0200
#endif
/* Binding Update Option */
struct ip6_opt_binding_update {
uint8_t ip6ou_type;
uint8_t ip6ou_len;
uint8_t ip6ou_flags;
uint8_t ip6ou_prefixlen;
uint8_t ip6ou_seqno[2];
uint8_t ip6ou_lifetime[4];
uint8_t ip6ou_coa[16]; /* Optional based on flags */
/* Followed by sub-options */
};
/* Binding Update Flags */
#define IP6_BUF_ACK 0x80 /* Request a binding ack */
#define IP6_BUF_HOME 0x40 /* Home Registration */
#define IP6_BUF_COA 0x20 /* Care-of-address present in option */
#define IP6_BUF_ROUTER 0x10 /* Sending mobile node is a router */
/* Binding Ack Option */
struct ip6_opt_binding_ack {
uint8_t ip6oa_type;
uint8_t ip6oa_len;
uint8_t ip6oa_status;
uint8_t ip6oa_seqno[2];
uint8_t ip6oa_lifetime[4];
uint8_t ip6oa_refresh[4];
/* Followed by sub-options */
};
/* Binding Request Option */
struct ip6_opt_binding_request {
uint8_t ip6or_type;
uint8_t ip6or_len;
/* Followed by sub-options */
};
/* Home Address Option */
struct ip6_opt_home_address {
uint8_t ip6oh_type;
uint8_t ip6oh_len;
uint8_t ip6oh_addr[16]; /* Home Address */
/* Followed by sub-options */
};
/* Labeled Security Option */
struct ip6_opt_labeled_security {
uint8_t ip6ol_type;
uint8_t ip6ol_len; /* always even for defined values */
uint8_t ip6ol_doi[4];
/* Followed by sub-options */
};
#define IP6LS_DOI_V4 0 /* IPv4 transition */
#define IP6LS_TT_LEVEL 1 /* level or classification; 2-octet value */
#define IP6LS_TT_VECTOR 2 /* compartments; bit vector (even # octets) */
#define IP6LS_TT_ENUM 3 /* set membership; list of 2-octet values */
#define IP6LS_TT_RANGES 4 /* set membership; pairs of 2-octet values */
#define IP6LS_TT_V4 5 /* IPv4 compatible option */
#define IP6LS_TT_DEST 6 /* destination-only data; per DOI */
#ifdef __cplusplus
}
#endif
#endif /* _NETINET_IP6_H */
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