summaryrefslogtreecommitdiff
path: root/include/uapi/linux/ipv6.h
blob: 5a2991cf0251d558c15d108d9ea88155240425e7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
#ifndef _UAPI_IPV6_H
#define _UAPI_IPV6_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*
 */


struct in6_pktinfo {
	struct in6_addr	ipi6_addr;
	int		ipi6_ifindex;
};

struct ip6_mtuinfo {
	struct sockaddr_in6	ip6m_addr;
	__u32			ip6m_mtu;
};

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


/*
 *	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_MAX
};


#endif /* _UAPI_IPV6_H */