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