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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
30struct in6_addr
31{
32 union
33 {
34 __u8 u6_addr8[16];
Al Viro48818f82006-09-27 18:44:54 -070035 __be16 u6_addr16[8];
36 __be32 u6_addr32[4];
Linus Torvalds1da177e2005-04-16 15:20:36 -070037 } 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
48extern 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
51extern 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
54struct sockaddr_in6 {
55 unsigned short int sin6_family; /* AF_INET6 */
56 __u16 sin6_port; /* Transport layer port # */
57 __u32 sin6_flowinfo; /* IPv6 flow information */
58 struct in6_addr sin6_addr; /* IPv6 address */
59 __u32 sin6_scope_id; /* scope id (new in RFC2553) */
60};
61
62struct 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
72struct in6_flowlabel_req
73{
74 struct in6_addr flr_dst;
75 __u32 flr_label;
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 */
Masahide NAKAMURA2b741652006-08-23 20:34:26 -0700137#define IPPROTO_MH 135 /* IPv6 mobility header */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138
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
Noriaki TAKAMIYA842426e2006-08-23 19:21:34 -0700146#define IPV6_TLV_HAO 201 /* home address option */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147
148/*
149 * IPV6 socket options
150 */
151
152#define IPV6_ADDRFORM 1
YOSHIFUJI Hideaki333fad52005-09-08 09:59:17 +0900153#define IPV6_2292PKTINFO 2
154#define IPV6_2292HOPOPTS 3
155#define IPV6_2292DSTOPTS 4
156#define IPV6_2292RTHDR 5
157#define IPV6_2292PKTOPTIONS 6
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158#define IPV6_CHECKSUM 7
YOSHIFUJI Hideaki333fad52005-09-08 09:59:17 +0900159#define IPV6_2292HOPLIMIT 8
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160#define IPV6_NEXTHOP 9
YOSHIFUJI Hideaki7fe40f72005-06-28 15:46:24 -0700161#define IPV6_AUTHHDR 10 /* obsolete */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162#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
YOSHIFUJI Hideaki99288902005-09-10 11:26:34 +0900203/*
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
YOSHIFUJI Hideaki333fad52005-09-08 09:59:17 +0900225#endif
YOSHIFUJI Hideakidd274662005-09-10 11:32:45 +0900226
227/*
228 * Netfilter
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 */
YOSHIFUJI Hideaki333fad52005-09-08 09:59:17 +0900240#define IPV6_RECVTCLASS 66
241#define IPV6_TCLASS 67
YOSHIFUJI Hideaki333fad52005-09-08 09:59:17 +0900242
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243#endif