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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 _UAPI_LINUX_IN6_H
22#define _UAPI_LINUX_IN6_H
23
24#include <linux/types.h>
25#include <linux/libc-compat.h>
26
27/*
28 * IPv6 address structure
29 */
30
31#if __UAPI_DEF_IN6_ADDR
32struct in6_addr {
33 union {
34 __u8 u6_addr8[16];
35#if __UAPI_DEF_IN6_ADDR_ALT
36 __be16 u6_addr16[8];
37 __be32 u6_addr32[4];
38#endif
39 } in6_u;
40#define s6_addr in6_u.u6_addr8
41#if __UAPI_DEF_IN6_ADDR_ALT
42#define s6_addr16 in6_u.u6_addr16
43#define s6_addr32 in6_u.u6_addr32
44#endif
45};
46#endif /* __UAPI_DEF_IN6_ADDR */
47
48#if __UAPI_DEF_SOCKADDR_IN6
49struct sockaddr_in6 {
50 unsigned short int sin6_family; /* AF_INET6 */
51 __be16 sin6_port; /* Transport layer port # */
52 __be32 sin6_flowinfo; /* IPv6 flow information */
53 struct in6_addr sin6_addr; /* IPv6 address */
54 __u32 sin6_scope_id; /* scope id (new in RFC2553) */
55};
56#endif /* __UAPI_DEF_SOCKADDR_IN6 */
57
58#if __UAPI_DEF_IPV6_MREQ
59struct ipv6_mreq {
60 /* IPv6 multicast address of group */
61 struct in6_addr ipv6mr_multiaddr;
62
63 /* local IPv6 address of interface */
64 int ipv6mr_ifindex;
65};
66#endif /* __UAPI_DEF_IVP6_MREQ */
67
68#define ipv6mr_acaddr ipv6mr_multiaddr
69
70struct in6_flowlabel_req {
71 struct in6_addr flr_dst;
72 __be32 flr_label;
73 __u8 flr_action;
74 __u8 flr_share;
75 __u16 flr_flags;
76 __u16 flr_expires;
77 __u16 flr_linger;
78 __u32 __flr_pad;
79 /* Options in format of IPV6_PKTOPTIONS */
80};
81
82#define IPV6_FL_A_GET 0
83#define IPV6_FL_A_PUT 1
84#define IPV6_FL_A_RENEW 2
85
86#define IPV6_FL_F_CREATE 1
87#define IPV6_FL_F_EXCL 2
88
89#define IPV6_FL_S_NONE 0
90#define IPV6_FL_S_EXCL 1
91#define IPV6_FL_S_PROCESS 2
92#define IPV6_FL_S_USER 3
93#define IPV6_FL_S_ANY 255
94
95
96/*
97 * Bitmask constant declarations to help applications select out the
98 * flow label and priority fields.
99 *
100 * Note that this are in host byte order while the flowinfo field of
101 * sockaddr_in6 is in network byte order.
102 */
103
104#define IPV6_FLOWINFO_FLOWLABEL 0x000fffff
105#define IPV6_FLOWINFO_PRIORITY 0x0ff00000
106
107/* These definitions are obsolete */
108#define IPV6_PRIORITY_UNCHARACTERIZED 0x0000
109#define IPV6_PRIORITY_FILLER 0x0100
110#define IPV6_PRIORITY_UNATTENDED 0x0200
111#define IPV6_PRIORITY_RESERVED1 0x0300
112#define IPV6_PRIORITY_BULK 0x0400
113#define IPV6_PRIORITY_RESERVED2 0x0500
114#define IPV6_PRIORITY_INTERACTIVE 0x0600
115#define IPV6_PRIORITY_CONTROL 0x0700
116#define IPV6_PRIORITY_8 0x0800
117#define IPV6_PRIORITY_9 0x0900
118#define IPV6_PRIORITY_10 0x0a00
119#define IPV6_PRIORITY_11 0x0b00
120#define IPV6_PRIORITY_12 0x0c00
121#define IPV6_PRIORITY_13 0x0d00
122#define IPV6_PRIORITY_14 0x0e00
123#define IPV6_PRIORITY_15 0x0f00
124
125/*
126 * IPV6 extension headers
127 */
128#if __UAPI_DEF_IPPROTO_V6
129enum {
130 IPPROTO_HOPOPTS = 0, /* IPv6 hop-by-hop options */
131#define IPPROTO_HOPOPTS IPPROTO_HOPOPTS
132 IPPROTO_ROUTING = 43, /* IPv6 routing header */
133#define IPPROTO_ROUTING IPPROTO_ROUTING
134 IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header */
135#define IPPROTO_FRAGMENT IPPROTO_FRAGMENT
136 IPPROTO_ICMPV6 = 58, /* ICMPv6 */
137#define IPPROTO_ICMPV6 IPPROTO_ICMPV6
138 IPPROTO_NONE = 59, /* IPv6 no next header */
139#define IPPROTO_NONE IPPROTO_NONE
140 IPPROTO_DSTOPTS = 60, /* IPv6 destination options */
141#define IPPROTO_DSTOPTS IPPROTO_DSTOPTS
142 IPPROTO_MH = 135, /* IPv6 mobility header */
143#define IPPROTO_MH IPPROTO_MH
144};
145#endif /* __UAPI_DEF_IPPROTO_V6 */
146
147/*
148 * IPv6 TLV options.
149 */
150#define IPV6_TLV_PAD1 0
151#define IPV6_TLV_PADN 1
152#define IPV6_TLV_ROUTERALERT 5
153#define IPV6_TLV_JUMBO 194
154#define IPV6_TLV_HAO 201 /* home address option */
155
156/*
157 * IPV6 socket options
158 */
159
160#define IPV6_ADDRFORM 1
161#define IPV6_2292PKTINFO 2
162#define IPV6_2292HOPOPTS 3
163#define IPV6_2292DSTOPTS 4
164#define IPV6_2292RTHDR 5
165#define IPV6_2292PKTOPTIONS 6
166#define IPV6_CHECKSUM 7
167#define IPV6_2292HOPLIMIT 8
168#define IPV6_NEXTHOP 9
169#define IPV6_AUTHHDR 10 /* obsolete */
170#define IPV6_FLOWINFO 11
171
172#define IPV6_UNICAST_HOPS 16
173#define IPV6_MULTICAST_IF 17
174#define IPV6_MULTICAST_HOPS 18
175#define IPV6_MULTICAST_LOOP 19
176#define IPV6_ADD_MEMBERSHIP 20
177#define IPV6_DROP_MEMBERSHIP 21
178#define IPV6_ROUTER_ALERT 22
179#define IPV6_MTU_DISCOVER 23
180#define IPV6_MTU 24
181#define IPV6_RECVERR 25
182#define IPV6_V6ONLY 26
183#define IPV6_JOIN_ANYCAST 27
184#define IPV6_LEAVE_ANYCAST 28
185
186/* IPV6_MTU_DISCOVER values */
187#define IPV6_PMTUDISC_DONT 0
188#define IPV6_PMTUDISC_WANT 1
189#define IPV6_PMTUDISC_DO 2
190#define IPV6_PMTUDISC_PROBE 3
191
192/* Flowlabel */
193#define IPV6_FLOWLABEL_MGR 32
194#define IPV6_FLOWINFO_SEND 33
195
196#define IPV6_IPSEC_POLICY 34
197#define IPV6_XFRM_POLICY 35
198
199/*
200 * Multicast:
201 * Following socket options are shared between IPv4 and IPv6.
202 *
203 * MCAST_JOIN_GROUP 42
204 * MCAST_BLOCK_SOURCE 43
205 * MCAST_UNBLOCK_SOURCE 44
206 * MCAST_LEAVE_GROUP 45
207 * MCAST_JOIN_SOURCE_GROUP 46
208 * MCAST_LEAVE_SOURCE_GROUP 47
209 * MCAST_MSFILTER 48
210 */
211
212/*
213 * Advanced API (RFC3542) (1)
214 *
215 * Note: IPV6_RECVRTHDRDSTOPTS does not exist. see net/ipv6/datagram.c.
216 */
217
218#define IPV6_RECVPKTINFO 49
219#define IPV6_PKTINFO 50
220#define IPV6_RECVHOPLIMIT 51
221#define IPV6_HOPLIMIT 52
222#define IPV6_RECVHOPOPTS 53
223#define IPV6_HOPOPTS 54
224#define IPV6_RTHDRDSTOPTS 55
225#define IPV6_RECVRTHDR 56
226#define IPV6_RTHDR 57
227#define IPV6_RECVDSTOPTS 58
228#define IPV6_DSTOPTS 59
229#define IPV6_RECVPATHMTU 60
230#define IPV6_PATHMTU 61
231#define IPV6_DONTFRAG 62
232#if 0 /* not yet */
233#define IPV6_USE_MIN_MTU 63
234#endif
235
236/*
237 * Netfilter (1)
238 *
239 * Following socket options are used in ip6_tables;
240 * see include/linux/netfilter_ipv6/ip6_tables.h.
241 *
242 * IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO 64
243 * IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES 65
244 */
245
246/*
247 * Advanced API (RFC3542) (2)
248 */
249#define IPV6_RECVTCLASS 66
250#define IPV6_TCLASS 67
251
252/*
253 * Netfilter (2)
254 *
255 * Following socket options are used in ip6_tables;
256 * see include/linux/netfilter_ipv6/ip6_tables.h.
257 *
258 * IP6T_SO_GET_REVISION_MATCH 68
259 * IP6T_SO_GET_REVISION_TARGET 69
260 * IP6T_SO_ORIGINAL_DST 80
261 */
262
263/* RFC5014: Source address selection */
264#define IPV6_ADDR_PREFERENCES 72
265
266#define IPV6_PREFER_SRC_TMP 0x0001
267#define IPV6_PREFER_SRC_PUBLIC 0x0002
268#define IPV6_PREFER_SRC_PUBTMP_DEFAULT 0x0100
269#define IPV6_PREFER_SRC_COA 0x0004
270#define IPV6_PREFER_SRC_HOME 0x0400
271#define IPV6_PREFER_SRC_CGA 0x0008
272#define IPV6_PREFER_SRC_NONCGA 0x0800
273
274/* RFC5082: Generalized Ttl Security Mechanism */
275#define IPV6_MINHOPCOUNT 73
276
277#define IPV6_ORIGDSTADDR 74
278#define IPV6_RECVORIGDSTADDR IPV6_ORIGDSTADDR
279#define IPV6_TRANSPARENT 75
280#define IPV6_UNICAST_IF 76
281
282/*
283 * Multicast Routing:
284 * see include/uapi/linux/mroute6.h.
285 *
286 * MRT6_BASE 200
287 * ...
288 * MRT6_MAX
289 */
290#endif /* _UAPI_LINUX_IN6_H */