[net-next-2.6.git] / include / linux / in6.h

/*
 *	Types and definitions for AF_INET6 
 *	Linux INET6 implementation 
 *
 *	Authors:
 *	Pedro Roque		<roque@di.fc.ul.pt>	
 *
 *	Sources:
 *	IPv6 Program Interfaces for BSD Systems
 *      <draft-ietf-ipngwg-bsd-api-05.txt>
 *
 *	Advanced Sockets API for IPv6
 *	<draft-stevens-advanced-api-00.txt>
 *
 *	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.
 */

#ifndef _LINUX_IN6_H
#define _LINUX_IN6_H

#include <linux/types.h>

/*
 *	IPv6 address structure
 */

struct in6_addr
{
	union 
	{
		__u8		u6_addr8[16];
		__be16		u6_addr16[8];
		__be32		u6_addr32[4];
	} in6_u;
#define s6_addr			in6_u.u6_addr8
#define s6_addr16		in6_u.u6_addr16
#define s6_addr32		in6_u.u6_addr32
};

/* IPv6 Wildcard Address (::) and Loopback Address (::1) defined in RFC2553
 * NOTE: Be aware the IN6ADDR_* constants and in6addr_* externals are defined
 * in network byte order, not in host byte order as are the IPv4 equivalents
 */
#if 0
extern const struct in6_addr in6addr_any;
#define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
#endif
extern const struct in6_addr in6addr_loopback;
#define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }

struct sockaddr_in6 {
	unsigned short int	sin6_family;    /* AF_INET6 */
	__be16			sin6_port;      /* Transport layer port # */
	__be32			sin6_flowinfo;  /* IPv6 flow information */
	struct in6_addr		sin6_addr;      /* IPv6 address */
	__u32			sin6_scope_id;  /* scope id (new in RFC2553) */
};

struct ipv6_mreq {
	/* IPv6 multicast address of group */
	struct in6_addr ipv6mr_multiaddr;

	/* local IPv6 address of interface */
	int		ipv6mr_ifindex;
};

#define ipv6mr_acaddr	ipv6mr_multiaddr

struct in6_flowlabel_req
{
	struct in6_addr	flr_dst;
	__be32	flr_label;
	__u8	flr_action;
	__u8	flr_share;
	__u16	flr_flags;
	__u16 	flr_expires;
	__u16	flr_linger;
	__u32	__flr_pad;
	/* Options in format of IPV6_PKTOPTIONS */
};

#define IPV6_FL_A_GET	0
#define IPV6_FL_A_PUT	1
#define IPV6_FL_A_RENEW	2

#define IPV6_FL_F_CREATE	1
#define IPV6_FL_F_EXCL		2

#define IPV6_FL_S_NONE		0
#define IPV6_FL_S_EXCL		1
#define IPV6_FL_S_PROCESS	2
#define IPV6_FL_S_USER		3
#define IPV6_FL_S_ANY		255


/*
 *	Bitmask constant declarations to help applications select out the 
 *	flow label and priority fields.
 *
 *	Note that this are in host byte order while the flowinfo field of
 *	sockaddr_in6 is in network byte order.
 */

#define IPV6_FLOWINFO_FLOWLABEL		0x000fffff
#define IPV6_FLOWINFO_PRIORITY		0x0ff00000

/* These defintions are obsolete */
#define IPV6_PRIORITY_UNCHARACTERIZED	0x0000
#define IPV6_PRIORITY_FILLER		0x0100
#define IPV6_PRIORITY_UNATTENDED	0x0200
#define IPV6_PRIORITY_RESERVED1		0x0300
#define IPV6_PRIORITY_BULK		0x0400
#define IPV6_PRIORITY_RESERVED2		0x0500
#define IPV6_PRIORITY_INTERACTIVE	0x0600
#define IPV6_PRIORITY_CONTROL		0x0700
#define IPV6_PRIORITY_8			0x0800
#define IPV6_PRIORITY_9			0x0900
#define IPV6_PRIORITY_10		0x0a00
#define IPV6_PRIORITY_11		0x0b00
#define IPV6_PRIORITY_12		0x0c00
#define IPV6_PRIORITY_13		0x0d00
#define IPV6_PRIORITY_14		0x0e00
#define IPV6_PRIORITY_15		0x0f00

/*
 *	IPV6 extension headers
 */
#define IPPROTO_HOPOPTS		0	/* IPv6 hop-by-hop options	*/
#define IPPROTO_ROUTING		43	/* IPv6 routing header		*/
#define IPPROTO_FRAGMENT	44	/* IPv6 fragmentation header	*/
#define IPPROTO_ICMPV6		58	/* ICMPv6			*/
#define IPPROTO_NONE		59	/* IPv6 no next header		*/
#define IPPROTO_DSTOPTS		60	/* IPv6 destination options	*/
#define IPPROTO_MH		135	/* IPv6 mobility header		*/

/*
 *	IPv6 TLV options.
 */
#define IPV6_TLV_PAD0		0
#define IPV6_TLV_PADN		1
#define IPV6_TLV_ROUTERALERT	5
#define IPV6_TLV_JUMBO		194
#define IPV6_TLV_HAO		201	/* home address option */

/*
 *	IPV6 socket options
 */

#define IPV6_ADDRFORM		1
#define IPV6_2292PKTINFO	2
#define IPV6_2292HOPOPTS	3
#define IPV6_2292DSTOPTS	4
#define IPV6_2292RTHDR		5
#define IPV6_2292PKTOPTIONS	6
#define IPV6_CHECKSUM		7
#define IPV6_2292HOPLIMIT	8
#define IPV6_NEXTHOP		9
#define IPV6_AUTHHDR		10	/* obsolete */
#define IPV6_FLOWINFO		11

#define IPV6_UNICAST_HOPS	16
#define IPV6_MULTICAST_IF	17
#define IPV6_MULTICAST_HOPS	18
#define IPV6_MULTICAST_LOOP	19
#define IPV6_ADD_MEMBERSHIP	20
#define IPV6_DROP_MEMBERSHIP	21
#define IPV6_ROUTER_ALERT	22
#define IPV6_MTU_DISCOVER	23
#define IPV6_MTU		24
#define IPV6_RECVERR		25
#define IPV6_V6ONLY		26
#define IPV6_JOIN_ANYCAST	27
#define IPV6_LEAVE_ANYCAST	28

/* IPV6_MTU_DISCOVER values */
#define IPV6_PMTUDISC_DONT		0
#define IPV6_PMTUDISC_WANT		1
#define IPV6_PMTUDISC_DO		2

/* Flowlabel */
#define IPV6_FLOWLABEL_MGR	32
#define IPV6_FLOWINFO_SEND	33

#define IPV6_IPSEC_POLICY	34
#define IPV6_XFRM_POLICY	35

/*
 * Multicast:
 * Following socket options are shared between IPv4 and IPv6.
 *
 * MCAST_JOIN_GROUP		42
 * MCAST_BLOCK_SOURCE		43
 * MCAST_UNBLOCK_SOURCE		44
 * MCAST_LEAVE_GROUP		45
 * MCAST_JOIN_SOURCE_GROUP	46
 * MCAST_LEAVE_SOURCE_GROUP	47
 * MCAST_MSFILTER		48
 */

/*
 * Advanced API (RFC3542) (1)
 *
 * Note: IPV6_RECVRTHDRDSTOPTS does not exist. see net/ipv6/datagram.c.
 */

#define IPV6_RECVPKTINFO	49
#define IPV6_PKTINFO		50
#define IPV6_RECVHOPLIMIT	51
#define IPV6_HOPLIMIT		52
#define IPV6_RECVHOPOPTS	53
#define IPV6_HOPOPTS		54
#define IPV6_RTHDRDSTOPTS	55
#define IPV6_RECVRTHDR		56
#define IPV6_RTHDR		57
#define IPV6_RECVDSTOPTS	58
#define IPV6_DSTOPTS		59
#if 0	/* not yet */
#define IPV6_RECVPATHMTU	60
#define IPV6_PATHMTU		61
#define IPV6_DONTFRAG		62
#define IPV6_USE_MIN_MTU	63
#endif

/*
 * Netfilter (1)
 *
 * Following socket options are used in ip6_tables;
 * see include/linux/netfilter_ipv6/ip6_tables.h.
 *
 * IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO		64
 * IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES	65
 */

/*
 * Advanced API (RFC3542) (2)
 */
#define IPV6_RECVTCLASS		66
#define IPV6_TCLASS		67

/*
 * Netfilter (2)
 *
 * Following socket options are used in ip6_tables;
 * see include/linux/netfilter_ipv6/ip6_tables.h.
 *
 * IP6T_SO_GET_REVISION_MATCH	68
 * IP6T_SO_GET_REVISION_TARGET	69
 */

#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Types and definitions for AF_INET6
	3	* Linux INET6 implementation
	4	*
	5	* Authors:
	6	* Pedro Roque <roque@di.fc.ul.pt>
	7	*
	8	* Sources:
	9	* IPv6 Program Interfaces for BSD Systems
	10	* <draft-ietf-ipngwg-bsd-api-05.txt>
	11	*
	12	* Advanced Sockets API for IPv6
	13	* <draft-stevens-advanced-api-00.txt>
	14	*
	15	* This program is free software; you can redistribute it and/or
	16	* modify it under the terms of the GNU General Public License
	17	* as published by the Free Software Foundation; either version
	18	* 2 of the License, or (at your option) any later version.
	19	*/
	20
	21	#ifndef _LINUX_IN6_H
	22	#define _LINUX_IN6_H
	23
	24	#include <linux/types.h>
	25
	26	/*
	27	* IPv6 address structure
	28	*/
	29
	30	struct in6_addr
	31	{
	32	union
	33	{
	34	__u8 u6_addr8[16];
48818f82 AV	35	__be16 u6_addr16[8];
48818f82 AV	36	__be32 u6_addr32[4];
1da177e4 LT	37	} in6_u;
	38	#define s6_addr in6_u.u6_addr8
	39	#define s6_addr16 in6_u.u6_addr16
	40	#define s6_addr32 in6_u.u6_addr32
	41	};
	42
	43	/* IPv6 Wildcard Address (::) and Loopback Address (::1) defined in RFC2553
	44	* NOTE: Be aware the IN6ADDR_* constants and in6addr_* externals are defined
	45	* in network byte order, not in host byte order as are the IPv4 equivalents
	46	*/
	47	#if 0
	48	extern const struct in6_addr in6addr_any;
	49	#define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
	50	#endif
	51	extern const struct in6_addr in6addr_loopback;
	52	#define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
	53
	54	struct sockaddr_in6 {
	55	unsigned short int sin6_family; /* AF_INET6 */
e2e38e81	56	__be16 sin6_port; /* Transport layer port # */
90bcaf7b	57	__be32 sin6_flowinfo; /* IPv6 flow information */
1da177e4 LT	58	struct in6_addr sin6_addr; /* IPv6 address */
	59	__u32 sin6_scope_id; /* scope id (new in RFC2553) */
	60	};
	61
	62	struct ipv6_mreq {
	63	/* IPv6 multicast address of group */
	64	struct in6_addr ipv6mr_multiaddr;
	65
	66	/* local IPv6 address of interface */
	67	int ipv6mr_ifindex;
	68	};
	69
	70	#define ipv6mr_acaddr ipv6mr_multiaddr
	71
	72	struct in6_flowlabel_req
	73	{
	74	struct in6_addr flr_dst;
90bcaf7b	75	__be32 flr_label;
1da177e4 LT	76	__u8 flr_action;
	77	__u8 flr_share;
	78	__u16 flr_flags;
	79	__u16 flr_expires;
	80	__u16 flr_linger;
	81	__u32 __flr_pad;
	82	/* Options in format of IPV6_PKTOPTIONS */
	83	};
	84
	85	#define IPV6_FL_A_GET 0
	86	#define IPV6_FL_A_PUT 1
	87	#define IPV6_FL_A_RENEW 2
	88
	89	#define IPV6_FL_F_CREATE 1
	90	#define IPV6_FL_F_EXCL 2
	91
	92	#define IPV6_FL_S_NONE 0
	93	#define IPV6_FL_S_EXCL 1
	94	#define IPV6_FL_S_PROCESS 2
	95	#define IPV6_FL_S_USER 3
	96	#define IPV6_FL_S_ANY 255
	97
	98
	99	/*
	100	* Bitmask constant declarations to help applications select out the
	101	* flow label and priority fields.
	102	*
	103	* Note that this are in host byte order while the flowinfo field of
	104	* sockaddr_in6 is in network byte order.
	105	*/
	106
	107	#define IPV6_FLOWINFO_FLOWLABEL 0x000fffff
	108	#define IPV6_FLOWINFO_PRIORITY 0x0ff00000
	109
	110	/* These defintions are obsolete */
	111	#define IPV6_PRIORITY_UNCHARACTERIZED 0x0000
	112	#define IPV6_PRIORITY_FILLER 0x0100
	113	#define IPV6_PRIORITY_UNATTENDED 0x0200
	114	#define IPV6_PRIORITY_RESERVED1 0x0300
	115	#define IPV6_PRIORITY_BULK 0x0400
	116	#define IPV6_PRIORITY_RESERVED2 0x0500
	117	#define IPV6_PRIORITY_INTERACTIVE 0x0600
	118	#define IPV6_PRIORITY_CONTROL 0x0700
	119	#define IPV6_PRIORITY_8 0x0800
	120	#define IPV6_PRIORITY_9 0x0900
	121	#define IPV6_PRIORITY_10 0x0a00
	122	#define IPV6_PRIORITY_11 0x0b00
	123	#define IPV6_PRIORITY_12 0x0c00
	124	#define IPV6_PRIORITY_13 0x0d00
	125	#define IPV6_PRIORITY_14 0x0e00
	126	#define IPV6_PRIORITY_15 0x0f00
	127
	128	/*
	129	* IPV6 extension headers
	130	*/
	131	#define IPPROTO_HOPOPTS 0 /* IPv6 hop-by-hop options */
	132	#define IPPROTO_ROUTING 43 /* IPv6 routing header */
	133	#define IPPROTO_FRAGMENT 44 /* IPv6 fragmentation header */
	134	#define IPPROTO_ICMPV6 58 /* ICMPv6 */
	135	#define IPPROTO_NONE 59 /* IPv6 no next header */
	136	#define IPPROTO_DSTOPTS 60 /* IPv6 destination options */
2b741653	137	#define IPPROTO_MH 135 /* IPv6 mobility header */
1da177e4 LT	138
	139	/*
	140	* IPv6 TLV options.
	141	*/
	142	#define IPV6_TLV_PAD0 0
	143	#define IPV6_TLV_PADN 1
	144	#define IPV6_TLV_ROUTERALERT 5
	145	#define IPV6_TLV_JUMBO 194
842426e7	146	#define IPV6_TLV_HAO 201 /* home address option */
1da177e4 LT	147
	148	/*
	149	* IPV6 socket options
	150	*/
	151
	152	#define IPV6_ADDRFORM 1
333fad53 YH	153	#define IPV6_2292PKTINFO 2
	154	#define IPV6_2292HOPOPTS 3
	155	#define IPV6_2292DSTOPTS 4
	156	#define IPV6_2292RTHDR 5
	157	#define IPV6_2292PKTOPTIONS 6
1da177e4	158	#define IPV6_CHECKSUM 7
333fad53	159	#define IPV6_2292HOPLIMIT 8
1da177e4	160	#define IPV6_NEXTHOP 9
7fe40f73	161	#define IPV6_AUTHHDR 10 /* obsolete */
1da177e4 LT	162	#define IPV6_FLOWINFO 11
	163
	164	#define IPV6_UNICAST_HOPS 16
	165	#define IPV6_MULTICAST_IF 17
	166	#define IPV6_MULTICAST_HOPS 18
	167	#define IPV6_MULTICAST_LOOP 19
	168	#define IPV6_ADD_MEMBERSHIP 20
	169	#define IPV6_DROP_MEMBERSHIP 21
	170	#define IPV6_ROUTER_ALERT 22
	171	#define IPV6_MTU_DISCOVER 23
	172	#define IPV6_MTU 24
	173	#define IPV6_RECVERR 25
	174	#define IPV6_V6ONLY 26
	175	#define IPV6_JOIN_ANYCAST 27
	176	#define IPV6_LEAVE_ANYCAST 28
	177
	178	/* IPV6_MTU_DISCOVER values */
	179	#define IPV6_PMTUDISC_DONT 0
	180	#define IPV6_PMTUDISC_WANT 1
	181	#define IPV6_PMTUDISC_DO 2
	182
	183	/* Flowlabel */
	184	#define IPV6_FLOWLABEL_MGR 32
	185	#define IPV6_FLOWINFO_SEND 33
	186
	187	#define IPV6_IPSEC_POLICY 34
	188	#define IPV6_XFRM_POLICY 35
	189
	190	/*
	191	* Multicast:
	192	* Following socket options are shared between IPv4 and IPv6.
	193	*
	194	* MCAST_JOIN_GROUP 42
	195	* MCAST_BLOCK_SOURCE 43
	196	* MCAST_UNBLOCK_SOURCE 44
	197	* MCAST_LEAVE_GROUP 45
	198	* MCAST_JOIN_SOURCE_GROUP 46
	199	* MCAST_LEAVE_SOURCE_GROUP 47
	200	* MCAST_MSFILTER 48
	201	*/
	202
9928890c YH	203	/*
	204	* Advanced API (RFC3542) (1)
	205	*
	206	* Note: IPV6_RECVRTHDRDSTOPTS does not exist. see net/ipv6/datagram.c.
	207	*/
	208
	209	#define IPV6_RECVPKTINFO 49
	210	#define IPV6_PKTINFO 50
	211	#define IPV6_RECVHOPLIMIT 51
	212	#define IPV6_HOPLIMIT 52
	213	#define IPV6_RECVHOPOPTS 53
	214	#define IPV6_HOPOPTS 54
	215	#define IPV6_RTHDRDSTOPTS 55
	216	#define IPV6_RECVRTHDR 56
	217	#define IPV6_RTHDR 57
	218	#define IPV6_RECVDSTOPTS 58
	219	#define IPV6_DSTOPTS 59
	220	#if 0 /* not yet */
	221	#define IPV6_RECVPATHMTU 60
	222	#define IPV6_PATHMTU 61
	223	#define IPV6_DONTFRAG 62
	224	#define IPV6_USE_MIN_MTU 63
333fad53	225	#endif
dd27466d YH	226
dd27466d YH	227	/*
b96e7ecb	228	* Netfilter (1)
dd27466d YH	229	*
	230	* Following socket options are used in ip6_tables;
	231	* see include/linux/netfilter_ipv6/ip6_tables.h.
	232	*
	233	* IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO 64
	234	* IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES 65
	235	*/
	236
	237	/*
	238	* Advanced API (RFC3542) (2)
	239	*/
333fad53 YH	240	#define IPV6_RECVTCLASS 66
333fad53 YH	241	#define IPV6_TCLASS 67
333fad53	242
b96e7ecb YK	243	/*
	244	* Netfilter (2)
	245	*
	246	* Following socket options are used in ip6_tables;
	247	* see include/linux/netfilter_ipv6/ip6_tables.h.
	248	*
	249	* IP6T_SO_GET_REVISION_MATCH 68
	250	* IP6T_SO_GET_REVISION_TARGET 69
	251	*/
	252
1da177e4	253	#endif