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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 | ||
30 | struct 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 | */ | |
47 | #if 0 | |
48 | extern 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 | |
51 | extern 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 | ||
54 | struct sockaddr_in6 { | |
55 | unsigned short int sin6_family; /* AF_INET6 */ | |
e2e38e81 | 56 | __be16 sin6_port; /* Transport layer port # */ |
1da177e4 LT |
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 | ||
62 | struct 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 | ||
72 | struct 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 */ | |
2b741653 | 137 | #define IPPROTO_MH 135 /* IPv6 mobility header */ |
1da177e4 LT |
138 | |
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 | |
842426e7 | 146 | #define IPV6_TLV_HAO 201 /* home address option */ |
1da177e4 LT |
147 | |
148 | /* | |
149 | * IPV6 socket options | |
150 | */ | |
151 | ||
152 | #define IPV6_ADDRFORM 1 | |
333fad53 YH |
153 | #define IPV6_2292PKTINFO 2 |
154 | #define IPV6_2292HOPOPTS 3 | |
155 | #define IPV6_2292DSTOPTS 4 | |
156 | #define IPV6_2292RTHDR 5 | |
157 | #define IPV6_2292PKTOPTIONS 6 | |
1da177e4 | 158 | #define IPV6_CHECKSUM 7 |
333fad53 | 159 | #define IPV6_2292HOPLIMIT 8 |
1da177e4 | 160 | #define IPV6_NEXTHOP 9 |
7fe40f73 | 161 | #define IPV6_AUTHHDR 10 /* obsolete */ |
1da177e4 LT |
162 | #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 | ||
9928890c YH |
203 | /* |
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 | |
333fad53 | 225 | #endif |
dd27466d YH |
226 | |
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 | */ | |
333fad53 YH |
240 | #define IPV6_RECVTCLASS 66 |
241 | #define IPV6_TCLASS 67 | |
333fad53 | 242 | |
1da177e4 | 243 | #endif |