[mirror_ubuntu-jammy-kernel.git] / include / uapi / linux / ipv6.h

#ifndef _UAPI_IPV6_H
#define _UAPI_IPV6_H

#include <linux/libc-compat.h>
#include <linux/types.h>
#include <linux/in6.h>
#include <asm/byteorder.h>

/* The latest drafts declared increase in minimal mtu up to 1280. */

#define IPV6_MIN_MTU	1280

/*
 *	Advanced API
 *	source interface/address selection, source routing, etc...
 *	*under construction*
 */

#if __UAPI_DEF_IN6_PKTINFO
struct in6_pktinfo {
	struct in6_addr	ipi6_addr;
	int		ipi6_ifindex;
};
#endif

#if __UAPI_DEF_IP6_MTUINFO
struct ip6_mtuinfo {
	struct sockaddr_in6	ip6m_addr;
	__u32			ip6m_mtu;
};
#endif

struct in6_ifreq {
	struct in6_addr	ifr6_addr;
	__u32		ifr6_prefixlen;
	int		ifr6_ifindex; 
};

#define IPV6_SRCRT_STRICT	0x01	/* Deprecated; will be removed */
#define IPV6_SRCRT_TYPE_0	0	/* Deprecated; will be removed */
#define IPV6_SRCRT_TYPE_2	2	/* IPv6 type 2 Routing Header	*/

/*
 *	routing header
 */
struct ipv6_rt_hdr {
	__u8		nexthdr;
	__u8		hdrlen;
	__u8		type;
	__u8		segments_left;

	/*
	 *	type specific data
	 *	variable length field
	 */
};


struct ipv6_opt_hdr {
	__u8 		nexthdr;
	__u8 		hdrlen;
	/* 
	 * TLV encoded option data follows.
	 */
} __attribute__((packed));	/* required for some archs */

#define ipv6_destopt_hdr ipv6_opt_hdr
#define ipv6_hopopt_hdr  ipv6_opt_hdr

/* Router Alert option values (RFC2711) */
#define IPV6_OPT_ROUTERALERT_MLD	0x0000	/* MLD(RFC2710) */

/*
 *	routing header type 0 (used in cmsghdr struct)
 */

struct rt0_hdr {
	struct ipv6_rt_hdr	rt_hdr;
	__u32			reserved;
	struct in6_addr		addr[0];

#define rt0_type		rt_hdr.type
};

/*
 *	routing header type 2
 */

struct rt2_hdr {
	struct ipv6_rt_hdr	rt_hdr;
	__u32			reserved;
	struct in6_addr		addr;

#define rt2_type		rt_hdr.type
};

/*
 *	home address option in destination options header
 */

struct ipv6_destopt_hao {
	__u8			type;
	__u8			length;
	struct in6_addr		addr;
} __attribute__((packed));

/*
 *	IPv6 fixed header
 *
 *	BEWARE, it is incorrect. The first 4 bits of flow_lbl
 *	are glued to priority now, forming "class".
 */

struct ipv6hdr {
#if defined(__LITTLE_ENDIAN_BITFIELD)
	__u8			priority:4,
				version:4;
#elif defined(__BIG_ENDIAN_BITFIELD)
	__u8			version:4,
				priority:4;
#else
#error	"Please fix <asm/byteorder.h>"
#endif
	__u8			flow_lbl[3];

	__be16			payload_len;
	__u8			nexthdr;
	__u8			hop_limit;

	struct	in6_addr	saddr;
	struct	in6_addr	daddr;
};


/* index values for the variables in ipv6_devconf */
enum {
	DEVCONF_FORWARDING = 0,
	DEVCONF_HOPLIMIT,
	DEVCONF_MTU6,
	DEVCONF_ACCEPT_RA,
	DEVCONF_ACCEPT_REDIRECTS,
	DEVCONF_AUTOCONF,
	DEVCONF_DAD_TRANSMITS,
	DEVCONF_RTR_SOLICITS,
	DEVCONF_RTR_SOLICIT_INTERVAL,
	DEVCONF_RTR_SOLICIT_DELAY,
	DEVCONF_USE_TEMPADDR,
	DEVCONF_TEMP_VALID_LFT,
	DEVCONF_TEMP_PREFERED_LFT,
	DEVCONF_REGEN_MAX_RETRY,
	DEVCONF_MAX_DESYNC_FACTOR,
	DEVCONF_MAX_ADDRESSES,
	DEVCONF_FORCE_MLD_VERSION,
	DEVCONF_ACCEPT_RA_DEFRTR,
	DEVCONF_ACCEPT_RA_PINFO,
	DEVCONF_ACCEPT_RA_RTR_PREF,
	DEVCONF_RTR_PROBE_INTERVAL,
	DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN,
	DEVCONF_PROXY_NDP,
	DEVCONF_OPTIMISTIC_DAD,
	DEVCONF_ACCEPT_SOURCE_ROUTE,
	DEVCONF_MC_FORWARDING,
	DEVCONF_DISABLE_IPV6,
	DEVCONF_ACCEPT_DAD,
	DEVCONF_FORCE_TLLAO,
	DEVCONF_NDISC_NOTIFY,
	DEVCONF_MLDV1_UNSOLICITED_REPORT_INTERVAL,
	DEVCONF_MLDV2_UNSOLICITED_REPORT_INTERVAL,
	DEVCONF_SUPPRESS_FRAG_NDISC,
	DEVCONF_ACCEPT_RA_FROM_LOCAL,
	DEVCONF_USE_OPTIMISTIC,
	DEVCONF_ACCEPT_RA_MTU,
	DEVCONF_STABLE_SECRET,
	DEVCONF_USE_OIF_ADDRS_ONLY,
	DEVCONF_ACCEPT_RA_MIN_HOP_LIMIT,
	DEVCONF_IGNORE_ROUTES_WITH_LINKDOWN,
	DEVCONF_DROP_UNICAST_IN_L2_MULTICAST,
	DEVCONF_MAX
};


#endif /* _UAPI_IPV6_H */
Commit	Line	Data
607ca46e DH	1	#ifndef _UAPI_IPV6_H
	2	#define _UAPI_IPV6_H
	3
c66ad9ca	4	#include <linux/libc-compat.h>
607ca46e DH	5	#include <linux/types.h>
	6	#include <linux/in6.h>
	7	#include <asm/byteorder.h>
	8
	9	/* The latest drafts declared increase in minimal mtu up to 1280. */
	10
	11	#define IPV6_MIN_MTU 1280
	12
	13	/*
	14	* Advanced API
	15	* source interface/address selection, source routing, etc...
	16	* under construction
	17	*/
	18
3b50d902	19	#if __UAPI_DEF_IN6_PKTINFO
607ca46e DH	20	struct in6_pktinfo {
	21	struct in6_addr ipi6_addr;
	22	int ipi6_ifindex;
	23	};
3b50d902	24	#endif
607ca46e	25
3b50d902	26	#if __UAPI_DEF_IP6_MTUINFO
607ca46e DH	27	struct ip6_mtuinfo {
	28	struct sockaddr_in6 ip6m_addr;
	29	__u32 ip6m_mtu;
	30	};
3b50d902	31	#endif
607ca46e DH	32
	33	struct in6_ifreq {
	34	struct in6_addr ifr6_addr;
	35	__u32 ifr6_prefixlen;
	36	int ifr6_ifindex;
	37	};
	38
	39	#define IPV6_SRCRT_STRICT 0x01 /* Deprecated; will be removed */
	40	#define IPV6_SRCRT_TYPE_0 0 /* Deprecated; will be removed */
	41	#define IPV6_SRCRT_TYPE_2 2 /* IPv6 type 2 Routing Header */
	42
	43	/*
	44	* routing header
	45	*/
	46	struct ipv6_rt_hdr {
	47	__u8 nexthdr;
	48	__u8 hdrlen;
	49	__u8 type;
	50	__u8 segments_left;
	51
	52	/*
	53	* type specific data
	54	* variable length field
	55	*/
	56	};
	57
	58
	59	struct ipv6_opt_hdr {
	60	__u8 nexthdr;
	61	__u8 hdrlen;
	62	/*
	63	* TLV encoded option data follows.
	64	*/
	65	} __attribute__((packed)); /* required for some archs */
	66
	67	#define ipv6_destopt_hdr ipv6_opt_hdr
	68	#define ipv6_hopopt_hdr ipv6_opt_hdr
	69
dd3332bf YH	70	/* Router Alert option values (RFC2711) */
dd3332bf YH	71	#define IPV6_OPT_ROUTERALERT_MLD 0x0000 /* MLD(RFC2710) */
607ca46e DH	72
	73	/*
	74	* routing header type 0 (used in cmsghdr struct)
	75	*/
	76
	77	struct rt0_hdr {
	78	struct ipv6_rt_hdr rt_hdr;
	79	__u32 reserved;
	80	struct in6_addr addr[0];
	81
	82	#define rt0_type rt_hdr.type
	83	};
	84
	85	/*
	86	* routing header type 2
	87	*/
	88
	89	struct rt2_hdr {
	90	struct ipv6_rt_hdr rt_hdr;
	91	__u32 reserved;
	92	struct in6_addr addr;
	93
	94	#define rt2_type rt_hdr.type
	95	};
	96
	97	/*
	98	* home address option in destination options header
	99	*/
	100
	101	struct ipv6_destopt_hao {
	102	__u8 type;
	103	__u8 length;
	104	struct in6_addr addr;
	105	} __attribute__((packed));
	106
	107	/*
	108	* IPv6 fixed header
	109	*
	110	* BEWARE, it is incorrect. The first 4 bits of flow_lbl
	111	* are glued to priority now, forming "class".
	112	*/
	113
	114	struct ipv6hdr {
	115	#if defined(__LITTLE_ENDIAN_BITFIELD)
	116	__u8 priority:4,
	117	version:4;
	118	#elif defined(__BIG_ENDIAN_BITFIELD)
	119	__u8 version:4,
	120	priority:4;
	121	#else
	122	#error "Please fix <asm/byteorder.h>"
	123	#endif
	124	__u8 flow_lbl[3];
	125
	126	__be16 payload_len;
	127	__u8 nexthdr;
	128	__u8 hop_limit;
	129
	130	struct in6_addr saddr;
	131	struct in6_addr daddr;
	132	};
	133
	134
	135	/* index values for the variables in ipv6_devconf */
136	enum {
137	DEVCONF_FORWARDING = 0,
138	DEVCONF_HOPLIMIT,
139	DEVCONF_MTU6,
140	DEVCONF_ACCEPT_RA,
141	DEVCONF_ACCEPT_REDIRECTS,
142	DEVCONF_AUTOCONF,
143	DEVCONF_DAD_TRANSMITS,
144	DEVCONF_RTR_SOLICITS,
145	DEVCONF_RTR_SOLICIT_INTERVAL,
146	DEVCONF_RTR_SOLICIT_DELAY,
147	DEVCONF_USE_TEMPADDR,
148	DEVCONF_TEMP_VALID_LFT,
149	DEVCONF_TEMP_PREFERED_LFT,
150	DEVCONF_REGEN_MAX_RETRY,
151	DEVCONF_MAX_DESYNC_FACTOR,
152	DEVCONF_MAX_ADDRESSES,
153	DEVCONF_FORCE_MLD_VERSION,
154	DEVCONF_ACCEPT_RA_DEFRTR,
155	DEVCONF_ACCEPT_RA_PINFO,
156	DEVCONF_ACCEPT_RA_RTR_PREF,
157	DEVCONF_RTR_PROBE_INTERVAL,
158	DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN,
159	DEVCONF_PROXY_NDP,
160	DEVCONF_OPTIMISTIC_DAD,
161	DEVCONF_ACCEPT_SOURCE_ROUTE,
162	DEVCONF_MC_FORWARDING,
163	DEVCONF_DISABLE_IPV6,
164	DEVCONF_ACCEPT_DAD,
165	DEVCONF_FORCE_TLLAO,
5cb04436	166	DEVCONF_NDISC_NOTIFY,
fc4eba58 HFS	167	DEVCONF_MLDV1_UNSOLICITED_REPORT_INTERVAL,
fc4eba58 HFS	168	DEVCONF_MLDV2_UNSOLICITED_REPORT_INTERVAL,
b800c3b9	169	DEVCONF_SUPPRESS_FRAG_NDISC,
d9333196	170	DEVCONF_ACCEPT_RA_FROM_LOCAL,
7fd2561e	171	DEVCONF_USE_OPTIMISTIC,
c2943f14	172	DEVCONF_ACCEPT_RA_MTU,
3d1bec99	173	DEVCONF_STABLE_SECRET,
3985e8a3	174	DEVCONF_USE_OIF_ADDRS_ONLY,
8013d1d7	175	DEVCONF_ACCEPT_RA_MIN_HOP_LIMIT,
35103d11	176	DEVCONF_IGNORE_ROUTES_WITH_LINKDOWN,
abbc3043	177	DEVCONF_DROP_UNICAST_IN_L2_MULTICAST,
607ca46e DH	178	DEVCONF_MAX
	179	};
	180
	181
	182	#endif /* _UAPI_IPV6_H */