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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 _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 | 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 | |
41 | /* IPv6 Wildcard Address (::) and Loopback Address (::1) defined in RFC2553 |
42 | * NOTE: Be aware the IN6ADDR_* constants and in6addr_* externals are defined |
43 | * in network byte order, not in host byte order as are the IPv4 equivalents |
44 | */ |
45 | #ifdef __KERNEL__ |
46 | extern const struct in6_addr in6addr_any; |
47 | #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } } |
48 | extern const struct in6_addr in6addr_loopback; |
49 | #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } } |
50 | extern const struct in6_addr in6addr_linklocal_allnodes; |
51 | #define IN6ADDR_LINKLOCAL_ALLNODES_INIT \ |
52 | { { { 0xff,2,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } } |
53 | extern const struct in6_addr in6addr_linklocal_allrouters; |
54 | #define IN6ADDR_LINKLOCAL_ALLROUTERS_INIT \ |
55 | { { { 0xff,2,0,0,0,0,0,0,0,0,0,0,0,0,0,2 } } } |
56 | #endif |
57 | |
58 | struct sockaddr_in6 { |
59 | unsigned short int sin6_family; /* AF_INET6 */ |
60 | __be16 sin6_port; /* Transport layer port # */ |
61 | __be32 sin6_flowinfo; /* IPv6 flow information */ |
62 | struct in6_addr sin6_addr; /* IPv6 address */ |
63 | __u32 sin6_scope_id; /* scope id (new in RFC2553) */ |
64 | }; |
65 | |
66 | struct ipv6_mreq { |
67 | /* IPv6 multicast address of group */ |
68 | struct in6_addr ipv6mr_multiaddr; |
69 | |
70 | /* local IPv6 address of interface */ |
71 | int ipv6mr_ifindex; |
72 | }; |
73 | |
74 | #define ipv6mr_acaddr ipv6mr_multiaddr |
75 | |
76 | struct in6_flowlabel_req { |
77 | struct in6_addr flr_dst; |
78 | __be32 flr_label; |
79 | __u8 flr_action; |
80 | __u8 flr_share; |
81 | __u16 flr_flags; |
82 | __u16 flr_expires; |
83 | __u16 flr_linger; |
84 | __u32 __flr_pad; |
85 | /* Options in format of IPV6_PKTOPTIONS */ |
86 | }; |
87 | |
88 | #define IPV6_FL_A_GET 0 |
89 | #define IPV6_FL_A_PUT 1 |
90 | #define IPV6_FL_A_RENEW 2 |
91 | |
92 | #define IPV6_FL_F_CREATE 1 |
93 | #define IPV6_FL_F_EXCL 2 |
94 | |
95 | #define IPV6_FL_S_NONE 0 |
96 | #define IPV6_FL_S_EXCL 1 |
97 | #define IPV6_FL_S_PROCESS 2 |
98 | #define IPV6_FL_S_USER 3 |
99 | #define IPV6_FL_S_ANY 255 |
100 | |
101 | |
102 | /* |
103 | * Bitmask constant declarations to help applications select out the |
104 | * flow label and priority fields. |
105 | * |
106 | * Note that this are in host byte order while the flowinfo field of |
107 | * sockaddr_in6 is in network byte order. |
108 | */ |
109 | |
110 | #define IPV6_FLOWINFO_FLOWLABEL 0x000fffff |
111 | #define IPV6_FLOWINFO_PRIORITY 0x0ff00000 |
112 | |
113 | /* These definitions are obsolete */ |
114 | #define IPV6_PRIORITY_UNCHARACTERIZED 0x0000 |
115 | #define IPV6_PRIORITY_FILLER 0x0100 |
116 | #define IPV6_PRIORITY_UNATTENDED 0x0200 |
117 | #define IPV6_PRIORITY_RESERVED1 0x0300 |
118 | #define IPV6_PRIORITY_BULK 0x0400 |
119 | #define IPV6_PRIORITY_RESERVED2 0x0500 |
120 | #define IPV6_PRIORITY_INTERACTIVE 0x0600 |
121 | #define IPV6_PRIORITY_CONTROL 0x0700 |
122 | #define IPV6_PRIORITY_8 0x0800 |
123 | #define IPV6_PRIORITY_9 0x0900 |
124 | #define IPV6_PRIORITY_10 0x0a00 |
125 | #define IPV6_PRIORITY_11 0x0b00 |
126 | #define IPV6_PRIORITY_12 0x0c00 |
127 | #define IPV6_PRIORITY_13 0x0d00 |
128 | #define IPV6_PRIORITY_14 0x0e00 |
129 | #define IPV6_PRIORITY_15 0x0f00 |
130 | |
131 | /* |
132 | * IPV6 extension headers |
133 | */ |
134 | #define IPPROTO_HOPOPTS 0 /* IPv6 hop-by-hop options */ |
135 | #define IPPROTO_ROUTING 43 /* IPv6 routing header */ |
136 | #define IPPROTO_FRAGMENT 44 /* IPv6 fragmentation header */ |
137 | #define IPPROTO_ICMPV6 58 /* ICMPv6 */ |
138 | #define IPPROTO_NONE 59 /* IPv6 no next header */ |
139 | #define IPPROTO_DSTOPTS 60 /* IPv6 destination options */ |
140 | #define IPPROTO_MH 135 /* IPv6 mobility header */ |
141 | |
142 | /* |
143 | * IPv6 TLV options. |
144 | */ |
145 | #define IPV6_TLV_PAD0 0 |
146 | #define IPV6_TLV_PADN 1 |
147 | #define IPV6_TLV_ROUTERALERT 5 |
148 | #define IPV6_TLV_JUMBO 194 |
149 | #define IPV6_TLV_HAO 201 /* home address option */ |
150 | |
151 | /* |
152 | * IPV6 socket options |
153 | */ |
154 | |
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 | |
187 | /* Flowlabel */ |
188 | #define IPV6_FLOWLABEL_MGR 32 |
189 | #define IPV6_FLOWINFO_SEND 33 |
190 | |
191 | #define IPV6_IPSEC_POLICY 34 |
192 | #define IPV6_XFRM_POLICY 35 |
193 | |
194 | /* |
195 | * Multicast: |
196 | * Following socket options are shared between IPv4 and IPv6. |
197 | * |
198 | * MCAST_JOIN_GROUP 42 |
199 | * MCAST_BLOCK_SOURCE 43 |
200 | * MCAST_UNBLOCK_SOURCE 44 |
201 | * MCAST_LEAVE_GROUP 45 |
202 | * MCAST_JOIN_SOURCE_GROUP 46 |
203 | * MCAST_LEAVE_SOURCE_GROUP 47 |
204 | * MCAST_MSFILTER 48 |
205 | */ |
206 | |
207 | /* |
208 | * Advanced API (RFC3542) (1) |
209 | * |
210 | * Note: IPV6_RECVRTHDRDSTOPTS does not exist. see net/ipv6/datagram.c. |
211 | */ |
212 | |
213 | #define IPV6_RECVPKTINFO 49 |
214 | #define IPV6_PKTINFO 50 |
215 | #define IPV6_RECVHOPLIMIT 51 |
216 | #define IPV6_HOPLIMIT 52 |
217 | #define IPV6_RECVHOPOPTS 53 |
218 | #define IPV6_HOPOPTS 54 |
219 | #define IPV6_RTHDRDSTOPTS 55 |
220 | #define IPV6_RECVRTHDR 56 |
221 | #define IPV6_RTHDR 57 |
222 | #define IPV6_RECVDSTOPTS 58 |
223 | #define IPV6_DSTOPTS 59 |
224 | #define IPV6_RECVPATHMTU 60 |
225 | #define IPV6_PATHMTU 61 |
226 | #define IPV6_DONTFRAG 62 |
227 | #if 0 /* not yet */ |
228 | #define IPV6_USE_MIN_MTU 63 |
229 | #endif |
230 | |
231 | /* |
232 | * Netfilter (1) |
233 | * |
234 | * Following socket options are used in ip6_tables; |
235 | * see include/linux/netfilter_ipv6/ip6_tables.h. |
236 | * |
237 | * IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO 64 |
238 | * IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES 65 |
239 | */ |
240 | |
241 | /* |
242 | * Advanced API (RFC3542) (2) |
243 | */ |
244 | #define IPV6_RECVTCLASS 66 |
245 | #define IPV6_TCLASS 67 |
246 | |
247 | /* |
248 | * Netfilter (2) |
249 | * |
250 | * Following socket options are used in ip6_tables; |
251 | * see include/linux/netfilter_ipv6/ip6_tables.h. |
252 | * |
253 | * IP6T_SO_GET_REVISION_MATCH 68 |
254 | * IP6T_SO_GET_REVISION_TARGET 69 |
255 | */ |
256 | |
257 | /* RFC5014: Source address selection */ |
258 | #define IPV6_ADDR_PREFERENCES 72 |
259 | |
260 | #define IPV6_PREFER_SRC_TMP 0x0001 |
261 | #define IPV6_PREFER_SRC_PUBLIC 0x0002 |
262 | #define IPV6_PREFER_SRC_PUBTMP_DEFAULT 0x0100 |
263 | #define IPV6_PREFER_SRC_COA 0x0004 |
264 | #define IPV6_PREFER_SRC_HOME 0x0400 |
265 | #define IPV6_PREFER_SRC_CGA 0x0008 |
266 | #define IPV6_PREFER_SRC_NONCGA 0x0800 |
267 | |
268 | /* RFC5082: Generalized Ttl Security Mechanism */ |
269 | #define IPV6_MINHOPCOUNT 73 |
270 | |
271 | #define IPV6_ORIGDSTADDR 74 |
272 | #define IPV6_RECVORIGDSTADDR IPV6_ORIGDSTADDR |
273 | #define IPV6_TRANSPARENT 75 |
274 | |
275 | /* |
276 | * Multicast Routing: |
277 | * see include/linux/mroute6.h. |
278 | * |
279 | * MRT6_INIT 200 |
280 | * MRT6_DONE 201 |
281 | * MRT6_ADD_MIF 202 |
282 | * MRT6_DEL_MIF 203 |
283 | * MRT6_ADD_MFC 204 |
284 | * MRT6_DEL_MFC 205 |
285 | * MRT6_VERSION 206 |
286 | * MRT6_ASSERT 207 |
287 | * MRT6_PIM 208 |
288 | * (reserved) 209 |
289 | */ |
290 | #endif |
291 |
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