2 * Types and definitions for AF_INET6
3 * Linux INET6 implementation
6 * Pedro Roque <roque@di.fc.ul.pt>
9 * IPv6 Program Interfaces for BSD Systems
10 * <draft-ietf-ipngwg-bsd-api-05.txt>
12 * Advanced Sockets API for IPv6
13 * <draft-stevens-advanced-api-00.txt>
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.
24 #include <linux/types.h>
27 * IPv6 address structure
36 #define s6_addr in6_u.u6_addr8
37 #define s6_addr16 in6_u.u6_addr16
38 #define s6_addr32 in6_u.u6_addr32
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
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 } } }
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) */
67 /* IPv6 multicast address of group */
68 struct in6_addr ipv6mr_multiaddr;
70 /* local IPv6 address of interface */
74 #define ipv6mr_acaddr ipv6mr_multiaddr
76 struct in6_flowlabel_req {
77 struct in6_addr flr_dst;
85 /* Options in format of IPV6_PKTOPTIONS */
88 #define IPV6_FL_A_GET 0
89 #define IPV6_FL_A_PUT 1
90 #define IPV6_FL_A_RENEW 2
92 #define IPV6_FL_F_CREATE 1
93 #define IPV6_FL_F_EXCL 2
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
103 * Bitmask constant declarations to help applications select out the
104 * flow label and priority fields.
106 * Note that this are in host byte order while the flowinfo field of
107 * sockaddr_in6 is in network byte order.
110 #define IPV6_FLOWINFO_FLOWLABEL 0x000fffff
111 #define IPV6_FLOWINFO_PRIORITY 0x0ff00000
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
132 * IPV6 extension headers
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 */
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 */
152 * IPV6 socket 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
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
176 #define IPV6_RECVERR 25
177 #define IPV6_V6ONLY 26
178 #define IPV6_JOIN_ANYCAST 27
179 #define IPV6_LEAVE_ANYCAST 28
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
188 #define IPV6_FLOWLABEL_MGR 32
189 #define IPV6_FLOWINFO_SEND 33
191 #define IPV6_IPSEC_POLICY 34
192 #define IPV6_XFRM_POLICY 35
196 * Following socket options are shared between IPv4 and IPv6.
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
208 * Advanced API (RFC3542) (1)
210 * Note: IPV6_RECVRTHDRDSTOPTS does not exist. see net/ipv6/datagram.c.
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
225 #define IPV6_RECVPATHMTU 60
226 #define IPV6_PATHMTU 61
227 #define IPV6_DONTFRAG 62
228 #define IPV6_USE_MIN_MTU 63
234 * Following socket options are used in ip6_tables;
235 * see include/linux/netfilter_ipv6/ip6_tables.h.
237 * IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO 64
238 * IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES 65
242 * Advanced API (RFC3542) (2)
244 #define IPV6_RECVTCLASS 66
245 #define IPV6_TCLASS 67
250 * Following socket options are used in ip6_tables;
251 * see include/linux/netfilter_ipv6/ip6_tables.h.
253 * IP6T_SO_GET_REVISION_MATCH 68
254 * IP6T_SO_GET_REVISION_TARGET 69
257 /* RFC5014: Source address selection */
258 #define IPV6_ADDR_PREFERENCES 72
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
268 /* RFC5082: Generalized Ttl Security Mechanism */
269 #define IPV6_MINHOPCOUNT 73
273 * see include/linux/mroute6.h.