1 /* 2 * Types and definitions for AF_INET6 3 * Linux INET6 implementation 4 * 5 * Authors: 6 * Pedro Roque <roque (at) 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]; 35 __be16 u6_addr16[8]; 36 __be32 u6_addr32[4]; 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 48 struct sockaddr_in6 { 49 unsigned short int sin6_family; /* AF_INET6 */ 50 __be16 sin6_port; /* Transport layer port # */ 51 __be32 sin6_flowinfo; /* IPv6 flow information */ 52 struct in6_addr sin6_addr; /* IPv6 address */ 53 __u32 sin6_scope_id; /* scope id (new in RFC2553) */ 54 }; 55 56 struct ipv6_mreq { 57 /* IPv6 multicast address of group */ 58 struct in6_addr ipv6mr_multiaddr; 59 60 /* local IPv6 address of interface */ 61 int ipv6mr_ifindex; 62 }; 63 64 #define ipv6mr_acaddr ipv6mr_multiaddr 65 66 struct in6_flowlabel_req 67 { 68 struct in6_addr flr_dst; 69 __be32 flr_label; 70 __u8 flr_action; 71 __u8 flr_share; 72 __u16 flr_flags; 73 __u16 flr_expires; 74 __u16 flr_linger; 75 __u32 __flr_pad; 76 /* Options in format of IPV6_PKTOPTIONS */ 77 }; 78 79 #define IPV6_FL_A_GET 0 80 #define IPV6_FL_A_PUT 1 81 #define IPV6_FL_A_RENEW 2 82 83 #define IPV6_FL_F_CREATE 1 84 #define IPV6_FL_F_EXCL 2 85 86 #define IPV6_FL_S_NONE 0 87 #define IPV6_FL_S_EXCL 1 88 #define IPV6_FL_S_PROCESS 2 89 #define IPV6_FL_S_USER 3 90 #define IPV6_FL_S_ANY 255 91 92 93 /* 94 * Bitmask constant declarations to help applications select out the 95 * flow label and priority fields. 96 * 97 * Note that this are in host byte order while the flowinfo field of 98 * sockaddr_in6 is in network byte order. 99 */ 100 101 #define IPV6_FLOWINFO_FLOWLABEL 0x000fffff 102 #define IPV6_FLOWINFO_PRIORITY 0x0ff00000 103 104 /* These defintions are obsolete */ 105 #define IPV6_PRIORITY_UNCHARACTERIZED 0x0000 106 #define IPV6_PRIORITY_FILLER 0x0100 107 #define IPV6_PRIORITY_UNATTENDED 0x0200 108 #define IPV6_PRIORITY_RESERVED1 0x0300 109 #define IPV6_PRIORITY_BULK 0x0400 110 #define IPV6_PRIORITY_RESERVED2 0x0500 111 #define IPV6_PRIORITY_INTERACTIVE 0x0600 112 #define IPV6_PRIORITY_CONTROL 0x0700 113 #define IPV6_PRIORITY_8 0x0800 114 #define IPV6_PRIORITY_9 0x0900 115 #define IPV6_PRIORITY_10 0x0a00 116 #define IPV6_PRIORITY_11 0x0b00 117 #define IPV6_PRIORITY_12 0x0c00 118 #define IPV6_PRIORITY_13 0x0d00 119 #define IPV6_PRIORITY_14 0x0e00 120 #define IPV6_PRIORITY_15 0x0f00 121 122 /* 123 * IPV6 extension headers 124 */ 125 #define IPPROTO_HOPOPTS 0 /* IPv6 hop-by-hop options */ 126 #define IPPROTO_ROUTING 43 /* IPv6 routing header */ 127 #define IPPROTO_FRAGMENT 44 /* IPv6 fragmentation header */ 128 #define IPPROTO_ICMPV6 58 /* ICMPv6 */ 129 #define IPPROTO_NONE 59 /* IPv6 no next header */ 130 #define IPPROTO_DSTOPTS 60 /* IPv6 destination options */ 131 #define IPPROTO_MH 135 /* IPv6 mobility header */ 132 133 /* 134 * IPv6 TLV options. 135 */ 136 #define IPV6_TLV_PAD0 0 137 #define IPV6_TLV_PADN 1 138 #define IPV6_TLV_ROUTERALERT 5 139 #define IPV6_TLV_JUMBO 194 140 #define IPV6_TLV_HAO 201 /* home address option */ 141 142 /* 143 * IPV6 socket options 144 */ 145 146 #define IPV6_ADDRFORM 1 147 #define IPV6_2292PKTINFO 2 148 #define IPV6_2292HOPOPTS 3 149 #define IPV6_2292DSTOPTS 4 150 #define IPV6_2292RTHDR 5 151 #define IPV6_2292PKTOPTIONS 6 152 #define IPV6_CHECKSUM 7 153 #define IPV6_2292HOPLIMIT 8 154 #define IPV6_NEXTHOP 9 155 #define IPV6_AUTHHDR 10 /* obsolete */ 156 #define IPV6_FLOWINFO 11 157 158 #define IPV6_UNICAST_HOPS 16 159 #define IPV6_MULTICAST_IF 17 160 #define IPV6_MULTICAST_HOPS 18 161 #define IPV6_MULTICAST_LOOP 19 162 #define IPV6_ADD_MEMBERSHIP 20 163 #define IPV6_DROP_MEMBERSHIP 21 164 #define IPV6_ROUTER_ALERT 22 165 #define IPV6_MTU_DISCOVER 23 166 #define IPV6_MTU 24 167 #define IPV6_RECVERR 25 168 #define IPV6_V6ONLY 26 169 #define IPV6_JOIN_ANYCAST 27 170 #define IPV6_LEAVE_ANYCAST 28 171 172 /* IPV6_MTU_DISCOVER values */ 173 #define IPV6_PMTUDISC_DONT 0 174 #define IPV6_PMTUDISC_WANT 1 175 #define IPV6_PMTUDISC_DO 2 176 #define IPV6_PMTUDISC_PROBE 3 177 178 /* Flowlabel */ 179 #define IPV6_FLOWLABEL_MGR 32 180 #define IPV6_FLOWINFO_SEND 33 181 182 #define IPV6_IPSEC_POLICY 34 183 #define IPV6_XFRM_POLICY 35 184 185 /* 186 * Multicast: 187 * Following socket options are shared between IPv4 and IPv6. 188 * 189 * MCAST_JOIN_GROUP 42 190 * MCAST_BLOCK_SOURCE 43 191 * MCAST_UNBLOCK_SOURCE 44 192 * MCAST_LEAVE_GROUP 45 193 * MCAST_JOIN_SOURCE_GROUP 46 194 * MCAST_LEAVE_SOURCE_GROUP 47 195 * MCAST_MSFILTER 48 196 */ 197 198 /* 199 * Advanced API (RFC3542) (1) 200 * 201 * Note: IPV6_RECVRTHDRDSTOPTS does not exist. see net/ipv6/datagram.c. 202 */ 203 204 #define IPV6_RECVPKTINFO 49 205 #define IPV6_PKTINFO 50 206 #define IPV6_RECVHOPLIMIT 51 207 #define IPV6_HOPLIMIT 52 208 #define IPV6_RECVHOPOPTS 53 209 #define IPV6_HOPOPTS 54 210 #define IPV6_RTHDRDSTOPTS 55 211 #define IPV6_RECVRTHDR 56 212 #define IPV6_RTHDR 57 213 #define IPV6_RECVDSTOPTS 58 214 #define IPV6_DSTOPTS 59 215 #if 0 /* not yet */ 216 #define IPV6_RECVPATHMTU 60 217 #define IPV6_PATHMTU 61 218 #define IPV6_DONTFRAG 62 219 #define IPV6_USE_MIN_MTU 63 220 #endif 221 222 /* 223 * Netfilter (1) 224 * 225 * Following socket options are used in ip6_tables; 226 * see include/linux/netfilter_ipv6/ip6_tables.h. 227 * 228 * IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO 64 229 * IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES 65 230 */ 231 232 /* 233 * Advanced API (RFC3542) (2) 234 */ 235 #define IPV6_RECVTCLASS 66 236 #define IPV6_TCLASS 67 237 238 /* 239 * Netfilter (2) 240 * 241 * Following socket options are used in ip6_tables; 242 * see include/linux/netfilter_ipv6/ip6_tables.h. 243 * 244 * IP6T_SO_GET_REVISION_MATCH 68 245 * IP6T_SO_GET_REVISION_TARGET 69 246 */ 247 248 /* RFC5014: Source address selection */ 249 #define IPV6_ADDR_PREFERENCES 72 250 251 #define IPV6_PREFER_SRC_TMP 0x0001 252 #define IPV6_PREFER_SRC_PUBLIC 0x0002 253 #define IPV6_PREFER_SRC_PUBTMP_DEFAULT 0x0100 254 #define IPV6_PREFER_SRC_COA 0x0004 255 #define IPV6_PREFER_SRC_HOME 0x0400 256 #define IPV6_PREFER_SRC_CGA 0x0008 257 #define IPV6_PREFER_SRC_NONCGA 0x0800 258 259 /* 260 * Multicast Routing: 261 * see include/linux/mroute6.h. 262 * 263 * MRT6_INIT 200 264 * MRT6_DONE 201 265 * MRT6_ADD_MIF 202 266 * MRT6_DEL_MIF 203 267 * MRT6_ADD_MFC 204 268 * MRT6_DEL_MFC 205 269 * MRT6_VERSION 206 270 * MRT6_ASSERT 207 271 * MRT6_PIM 208 272 * (reserved) 209 273 */ 274 #endif 275
