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1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ | |
2 | /* | |
3 | * Types and definitions for AF_INET6 | |
4 | * Linux INET6 implementation | |
5 | * | |
6 | * Authors: | |
7 | * Pedro Roque <roque@di.fc.ul.pt> | |
8 | * | |
9 | * Sources: | |
10 | * IPv6 Program Interfaces for BSD Systems | |
11 | * <draft-ietf-ipngwg-bsd-api-05.txt> | |
12 | * | |
13 | * Advanced Sockets API for IPv6 | |
14 | * <draft-stevens-advanced-api-00.txt> | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or | |
17 | * modify it under the terms of the GNU General Public License | |
18 | * as published by the Free Software Foundation; either version | |
19 | * 2 of the License, or (at your option) any later version. | |
20 | */ | |
21 | ||
22 | #ifndef _UAPI_LINUX_IN6_H | |
23 | #define _UAPI_LINUX_IN6_H | |
24 | ||
25 | #include <linux/types.h> | |
26 | #include <linux/libc-compat.h> | |
27 | ||
28 | /* | |
29 | * IPv6 address structure | |
30 | */ | |
31 | ||
32 | #if __UAPI_DEF_IN6_ADDR | |
33 | struct in6_addr { | |
34 | union { | |
35 | __u8 u6_addr8[16]; | |
36 | #if __UAPI_DEF_IN6_ADDR_ALT | |
37 | __be16 u6_addr16[8]; | |
38 | __be32 u6_addr32[4]; | |
39 | #endif | |
40 | } in6_u; | |
41 | #define s6_addr in6_u.u6_addr8 | |
42 | #if __UAPI_DEF_IN6_ADDR_ALT | |
43 | #define s6_addr16 in6_u.u6_addr16 | |
44 | #define s6_addr32 in6_u.u6_addr32 | |
45 | #endif | |
46 | }; | |
47 | #endif /* __UAPI_DEF_IN6_ADDR */ | |
48 | ||
49 | #if __UAPI_DEF_SOCKADDR_IN6 | |
50 | struct sockaddr_in6 { | |
51 | unsigned short int sin6_family; /* AF_INET6 */ | |
52 | __be16 sin6_port; /* Transport layer port # */ | |
53 | __be32 sin6_flowinfo; /* IPv6 flow information */ | |
54 | struct in6_addr sin6_addr; /* IPv6 address */ | |
55 | __u32 sin6_scope_id; /* scope id (new in RFC2553) */ | |
56 | }; | |
57 | #endif /* __UAPI_DEF_SOCKADDR_IN6 */ | |
58 | ||
59 | #if __UAPI_DEF_IPV6_MREQ | |
60 | struct 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 | #endif /* __UAPI_DEF_IVP6_MREQ */ | |
68 | ||
69 | #define ipv6mr_acaddr ipv6mr_multiaddr | |
70 | ||
71 | struct in6_flowlabel_req { | |
72 | struct in6_addr flr_dst; | |
73 | __be32 flr_label; | |
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 | #define IPV6_FL_F_REFLECT 4 | |
90 | #define IPV6_FL_F_REMOTE 8 | |
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 definitions 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 | #if __UAPI_DEF_IPPROTO_V6 | |
132 | #define IPPROTO_HOPOPTS 0 /* IPv6 hop-by-hop options */ | |
133 | #define IPPROTO_ROUTING 43 /* IPv6 routing header */ | |
134 | #define IPPROTO_FRAGMENT 44 /* IPv6 fragmentation header */ | |
135 | #define IPPROTO_ICMPV6 58 /* ICMPv6 */ | |
136 | #define IPPROTO_NONE 59 /* IPv6 no next header */ | |
137 | #define IPPROTO_DSTOPTS 60 /* IPv6 destination options */ | |
138 | #define IPPROTO_MH 135 /* IPv6 mobility header */ | |
139 | #endif /* __UAPI_DEF_IPPROTO_V6 */ | |
140 | ||
141 | /* | |
142 | * IPv6 TLV options. | |
143 | */ | |
144 | #define IPV6_TLV_PAD1 0 | |
145 | #define IPV6_TLV_PADN 1 | |
146 | #define IPV6_TLV_ROUTERALERT 5 | |
147 | #define IPV6_TLV_CALIPSO 7 /* RFC 5570 */ | |
148 | #define IPV6_TLV_JUMBO 194 | |
149 | #define IPV6_TLV_HAO 201 /* home address option */ | |
150 | ||
151 | /* | |
152 | * IPV6 socket options | |
153 | */ | |
154 | #if __UAPI_DEF_IPV6_OPTIONS | |
155 | #define IPV6_ADDRFORM 1 | |
156 | #define IPV6_2292PKTINFO 2 | |
157 | #define IPV6_2292HOPOPTS 3 | |
158 | #define IPV6_2292DSTOPTS 4 | |
159 | #define IPV6_2292RTHDR 5 | |
160 | #define IPV6_2292PKTOPTIONS 6 | |
161 | #define IPV6_CHECKSUM 7 | |
162 | #define IPV6_2292HOPLIMIT 8 | |
163 | #define IPV6_NEXTHOP 9 | |
164 | #define IPV6_AUTHHDR 10 /* obsolete */ | |
165 | #define IPV6_FLOWINFO 11 | |
166 | ||
167 | #define IPV6_UNICAST_HOPS 16 | |
168 | #define IPV6_MULTICAST_IF 17 | |
169 | #define IPV6_MULTICAST_HOPS 18 | |
170 | #define IPV6_MULTICAST_LOOP 19 | |
171 | #define IPV6_ADD_MEMBERSHIP 20 | |
172 | #define IPV6_DROP_MEMBERSHIP 21 | |
173 | #define IPV6_ROUTER_ALERT 22 | |
174 | #define IPV6_MTU_DISCOVER 23 | |
175 | #define IPV6_MTU 24 | |
176 | #define IPV6_RECVERR 25 | |
177 | #define IPV6_V6ONLY 26 | |
178 | #define IPV6_JOIN_ANYCAST 27 | |
179 | #define IPV6_LEAVE_ANYCAST 28 | |
180 | ||
181 | /* IPV6_MTU_DISCOVER values */ | |
182 | #define IPV6_PMTUDISC_DONT 0 | |
183 | #define IPV6_PMTUDISC_WANT 1 | |
184 | #define IPV6_PMTUDISC_DO 2 | |
185 | #define IPV6_PMTUDISC_PROBE 3 | |
186 | /* same as IPV6_PMTUDISC_PROBE, provided for symetry with IPv4 | |
187 | * also see comments on IP_PMTUDISC_INTERFACE | |
188 | */ | |
189 | #define IPV6_PMTUDISC_INTERFACE 4 | |
190 | /* weaker version of IPV6_PMTUDISC_INTERFACE, which allows packets to | |
191 | * get fragmented if they exceed the interface mtu | |
192 | */ | |
193 | #define IPV6_PMTUDISC_OMIT 5 | |
194 | ||
195 | /* Flowlabel */ | |
196 | #define IPV6_FLOWLABEL_MGR 32 | |
197 | #define IPV6_FLOWINFO_SEND 33 | |
198 | ||
199 | #define IPV6_IPSEC_POLICY 34 | |
200 | #define IPV6_XFRM_POLICY 35 | |
201 | #define IPV6_HDRINCL 36 | |
202 | #endif | |
203 | ||
204 | /* | |
205 | * Multicast: | |
206 | * Following socket options are shared between IPv4 and IPv6. | |
207 | * | |
208 | * MCAST_JOIN_GROUP 42 | |
209 | * MCAST_BLOCK_SOURCE 43 | |
210 | * MCAST_UNBLOCK_SOURCE 44 | |
211 | * MCAST_LEAVE_GROUP 45 | |
212 | * MCAST_JOIN_SOURCE_GROUP 46 | |
213 | * MCAST_LEAVE_SOURCE_GROUP 47 | |
214 | * MCAST_MSFILTER 48 | |
215 | */ | |
216 | ||
217 | /* | |
218 | * Advanced API (RFC3542) (1) | |
219 | * | |
220 | * Note: IPV6_RECVRTHDRDSTOPTS does not exist. see net/ipv6/datagram.c. | |
221 | */ | |
222 | ||
223 | #define IPV6_RECVPKTINFO 49 | |
224 | #define IPV6_PKTINFO 50 | |
225 | #define IPV6_RECVHOPLIMIT 51 | |
226 | #define IPV6_HOPLIMIT 52 | |
227 | #define IPV6_RECVHOPOPTS 53 | |
228 | #define IPV6_HOPOPTS 54 | |
229 | #define IPV6_RTHDRDSTOPTS 55 | |
230 | #define IPV6_RECVRTHDR 56 | |
231 | #define IPV6_RTHDR 57 | |
232 | #define IPV6_RECVDSTOPTS 58 | |
233 | #define IPV6_DSTOPTS 59 | |
234 | #define IPV6_RECVPATHMTU 60 | |
235 | #define IPV6_PATHMTU 61 | |
236 | #define IPV6_DONTFRAG 62 | |
237 | #if 0 /* not yet */ | |
238 | #define IPV6_USE_MIN_MTU 63 | |
239 | #endif | |
240 | ||
241 | /* | |
242 | * Netfilter (1) | |
243 | * | |
244 | * Following socket options are used in ip6_tables; | |
245 | * see include/linux/netfilter_ipv6/ip6_tables.h. | |
246 | * | |
247 | * IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO 64 | |
248 | * IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES 65 | |
249 | */ | |
250 | ||
251 | /* | |
252 | * Advanced API (RFC3542) (2) | |
253 | */ | |
254 | #define IPV6_RECVTCLASS 66 | |
255 | #define IPV6_TCLASS 67 | |
256 | ||
257 | /* | |
258 | * Netfilter (2) | |
259 | * | |
260 | * Following socket options are used in ip6_tables; | |
261 | * see include/linux/netfilter_ipv6/ip6_tables.h. | |
262 | * | |
263 | * IP6T_SO_GET_REVISION_MATCH 68 | |
264 | * IP6T_SO_GET_REVISION_TARGET 69 | |
265 | * IP6T_SO_ORIGINAL_DST 80 | |
266 | */ | |
267 | ||
268 | #define IPV6_AUTOFLOWLABEL 70 | |
269 | /* RFC5014: Source address selection */ | |
270 | #define IPV6_ADDR_PREFERENCES 72 | |
271 | ||
272 | #define IPV6_PREFER_SRC_TMP 0x0001 | |
273 | #define IPV6_PREFER_SRC_PUBLIC 0x0002 | |
274 | #define IPV6_PREFER_SRC_PUBTMP_DEFAULT 0x0100 | |
275 | #define IPV6_PREFER_SRC_COA 0x0004 | |
276 | #define IPV6_PREFER_SRC_HOME 0x0400 | |
277 | #define IPV6_PREFER_SRC_CGA 0x0008 | |
278 | #define IPV6_PREFER_SRC_NONCGA 0x0800 | |
279 | ||
280 | /* RFC5082: Generalized Ttl Security Mechanism */ | |
281 | #define IPV6_MINHOPCOUNT 73 | |
282 | ||
283 | #define IPV6_ORIGDSTADDR 74 | |
284 | #define IPV6_RECVORIGDSTADDR IPV6_ORIGDSTADDR | |
285 | #define IPV6_TRANSPARENT 75 | |
286 | #define IPV6_UNICAST_IF 76 | |
287 | #define IPV6_RECVFRAGSIZE 77 | |
288 | ||
289 | /* | |
290 | * Multicast Routing: | |
291 | * see include/uapi/linux/mroute6.h. | |
292 | * | |
293 | * MRT6_BASE 200 | |
294 | * ... | |
295 | * MRT6_MAX | |
296 | */ | |
297 | #endif /* _UAPI_LINUX_IN6_H */ |