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[IPV6]: Make address arguments const.
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1da177e4
LT
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 _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];
48818f82
AV
35 __be16 u6_addr16[8];
36 __be32 u6_addr32[4];
1da177e4
LT
37 } 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 */
1da177e4
LT
47extern const struct in6_addr in6addr_any;
48#define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
1da177e4
LT
49extern const struct in6_addr in6addr_loopback;
50#define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
51
52struct sockaddr_in6 {
53 unsigned short int sin6_family; /* AF_INET6 */
e2e38e81 54 __be16 sin6_port; /* Transport layer port # */
90bcaf7b 55 __be32 sin6_flowinfo; /* IPv6 flow information */
1da177e4
LT
56 struct in6_addr sin6_addr; /* IPv6 address */
57 __u32 sin6_scope_id; /* scope id (new in RFC2553) */
58};
59
60struct ipv6_mreq {
61 /* IPv6 multicast address of group */
62 struct in6_addr ipv6mr_multiaddr;
63
64 /* local IPv6 address of interface */
65 int ipv6mr_ifindex;
66};
67
68#define ipv6mr_acaddr ipv6mr_multiaddr
69
70struct in6_flowlabel_req
71{
72 struct in6_addr flr_dst;
90bcaf7b 73 __be32 flr_label;
1da177e4
LT
74 __u8 flr_action;
75 __u8 flr_share;
76 __u16 flr_flags;
77 __u16 flr_expires;
78 __u16 flr_linger;
79 __u32 __flr_pad;
80 /* Options in format of IPV6_PKTOPTIONS */
81};
82
83#define IPV6_FL_A_GET 0
84#define IPV6_FL_A_PUT 1
85#define IPV6_FL_A_RENEW 2
86
87#define IPV6_FL_F_CREATE 1
88#define IPV6_FL_F_EXCL 2
89
90#define IPV6_FL_S_NONE 0
91#define IPV6_FL_S_EXCL 1
92#define IPV6_FL_S_PROCESS 2
93#define IPV6_FL_S_USER 3
94#define IPV6_FL_S_ANY 255
95
96
97/*
98 * Bitmask constant declarations to help applications select out the
99 * flow label and priority fields.
100 *
101 * Note that this are in host byte order while the flowinfo field of
102 * sockaddr_in6 is in network byte order.
103 */
104
105#define IPV6_FLOWINFO_FLOWLABEL 0x000fffff
106#define IPV6_FLOWINFO_PRIORITY 0x0ff00000
107
108/* These defintions are obsolete */
109#define IPV6_PRIORITY_UNCHARACTERIZED 0x0000
110#define IPV6_PRIORITY_FILLER 0x0100
111#define IPV6_PRIORITY_UNATTENDED 0x0200
112#define IPV6_PRIORITY_RESERVED1 0x0300
113#define IPV6_PRIORITY_BULK 0x0400
114#define IPV6_PRIORITY_RESERVED2 0x0500
115#define IPV6_PRIORITY_INTERACTIVE 0x0600
116#define IPV6_PRIORITY_CONTROL 0x0700
117#define IPV6_PRIORITY_8 0x0800
118#define IPV6_PRIORITY_9 0x0900
119#define IPV6_PRIORITY_10 0x0a00
120#define IPV6_PRIORITY_11 0x0b00
121#define IPV6_PRIORITY_12 0x0c00
122#define IPV6_PRIORITY_13 0x0d00
123#define IPV6_PRIORITY_14 0x0e00
124#define IPV6_PRIORITY_15 0x0f00
125
126/*
127 * IPV6 extension headers
128 */
129#define IPPROTO_HOPOPTS 0 /* IPv6 hop-by-hop options */
130#define IPPROTO_ROUTING 43 /* IPv6 routing header */
131#define IPPROTO_FRAGMENT 44 /* IPv6 fragmentation header */
132#define IPPROTO_ICMPV6 58 /* ICMPv6 */
133#define IPPROTO_NONE 59 /* IPv6 no next header */
134#define IPPROTO_DSTOPTS 60 /* IPv6 destination options */
2b741653 135#define IPPROTO_MH 135 /* IPv6 mobility header */
1da177e4
LT
136
137/*
138 * IPv6 TLV options.
139 */
140#define IPV6_TLV_PAD0 0
141#define IPV6_TLV_PADN 1
142#define IPV6_TLV_ROUTERALERT 5
143#define IPV6_TLV_JUMBO 194
842426e7 144#define IPV6_TLV_HAO 201 /* home address option */
1da177e4
LT
145
146/*
147 * IPV6 socket options
148 */
149
150#define IPV6_ADDRFORM 1
333fad53
YH
151#define IPV6_2292PKTINFO 2
152#define IPV6_2292HOPOPTS 3
153#define IPV6_2292DSTOPTS 4
154#define IPV6_2292RTHDR 5
155#define IPV6_2292PKTOPTIONS 6
1da177e4 156#define IPV6_CHECKSUM 7
333fad53 157#define IPV6_2292HOPLIMIT 8
1da177e4 158#define IPV6_NEXTHOP 9
7fe40f73 159#define IPV6_AUTHHDR 10 /* obsolete */
1da177e4
LT
160#define IPV6_FLOWINFO 11
161
162#define IPV6_UNICAST_HOPS 16
163#define IPV6_MULTICAST_IF 17
164#define IPV6_MULTICAST_HOPS 18
165#define IPV6_MULTICAST_LOOP 19
166#define IPV6_ADD_MEMBERSHIP 20
167#define IPV6_DROP_MEMBERSHIP 21
168#define IPV6_ROUTER_ALERT 22
169#define IPV6_MTU_DISCOVER 23
170#define IPV6_MTU 24
171#define IPV6_RECVERR 25
172#define IPV6_V6ONLY 26
173#define IPV6_JOIN_ANYCAST 27
174#define IPV6_LEAVE_ANYCAST 28
175
176/* IPV6_MTU_DISCOVER values */
177#define IPV6_PMTUDISC_DONT 0
178#define IPV6_PMTUDISC_WANT 1
179#define IPV6_PMTUDISC_DO 2
628a5c56 180#define IPV6_PMTUDISC_PROBE 3
1da177e4
LT
181
182/* Flowlabel */
183#define IPV6_FLOWLABEL_MGR 32
184#define IPV6_FLOWINFO_SEND 33
185
186#define IPV6_IPSEC_POLICY 34
187#define IPV6_XFRM_POLICY 35
188
189/*
190 * Multicast:
191 * Following socket options are shared between IPv4 and IPv6.
192 *
193 * MCAST_JOIN_GROUP 42
194 * MCAST_BLOCK_SOURCE 43
195 * MCAST_UNBLOCK_SOURCE 44
196 * MCAST_LEAVE_GROUP 45
197 * MCAST_JOIN_SOURCE_GROUP 46
198 * MCAST_LEAVE_SOURCE_GROUP 47
199 * MCAST_MSFILTER 48
200 */
201
9928890c
YH
202/*
203 * Advanced API (RFC3542) (1)
204 *
205 * Note: IPV6_RECVRTHDRDSTOPTS does not exist. see net/ipv6/datagram.c.
206 */
207
208#define IPV6_RECVPKTINFO 49
209#define IPV6_PKTINFO 50
210#define IPV6_RECVHOPLIMIT 51
211#define IPV6_HOPLIMIT 52
212#define IPV6_RECVHOPOPTS 53
213#define IPV6_HOPOPTS 54
214#define IPV6_RTHDRDSTOPTS 55
215#define IPV6_RECVRTHDR 56
216#define IPV6_RTHDR 57
217#define IPV6_RECVDSTOPTS 58
218#define IPV6_DSTOPTS 59
219#if 0 /* not yet */
220#define IPV6_RECVPATHMTU 60
221#define IPV6_PATHMTU 61
222#define IPV6_DONTFRAG 62
223#define IPV6_USE_MIN_MTU 63
333fad53 224#endif
dd27466d
YH
225
226/*
b96e7ecb 227 * Netfilter (1)
dd27466d
YH
228 *
229 * Following socket options are used in ip6_tables;
230 * see include/linux/netfilter_ipv6/ip6_tables.h.
231 *
232 * IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO 64
233 * IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES 65
234 */
235
236/*
237 * Advanced API (RFC3542) (2)
238 */
333fad53
YH
239#define IPV6_RECVTCLASS 66
240#define IPV6_TCLASS 67
333fad53 241
b96e7ecb
YK
242/*
243 * Netfilter (2)
244 *
245 * Following socket options are used in ip6_tables;
246 * see include/linux/netfilter_ipv6/ip6_tables.h.
247 *
248 * IP6T_SO_GET_REVISION_MATCH 68
249 * IP6T_SO_GET_REVISION_TARGET 69
250 */
251
7cbca67c
YH
252/* RFC5014: Source address selection */
253#define IPV6_ADDR_PREFERENCES 72
254
255#define IPV6_PREFER_SRC_TMP 0x0001
256#define IPV6_PREFER_SRC_PUBLIC 0x0002
257#define IPV6_PREFER_SRC_PUBTMP_DEFAULT 0x0100
258#define IPV6_PREFER_SRC_COA 0x0004
259#define IPV6_PREFER_SRC_HOME 0x0400
260#define IPV6_PREFER_SRC_CGA 0x0008
261#define IPV6_PREFER_SRC_NONCGA 0x0800
262
12802d05
YH
263/*
264 * Multicast Routing:
265 * see include/linux/mroute6.h.
266 *
267 * MRT6_INIT 200
268 * MRT6_DONE 201
269 * MRT6_ADD_MIF 202
270 * MRT6_DEL_MIF 203
271 * MRT6_ADD_MFC 204
272 * MRT6_DEL_MFC 205
273 * MRT6_VERSION 206
274 * MRT6_ASSERT 207
275 * MRT6_PIM 208
276 * (reserved) 209
277 */
1da177e4 278#endif