1 /* 2 * Types and definitions for AF_INET6 3 * Linux INET6 implementation 4 * 5 * Authors: 6 * Pedro Roque <[email protected]> 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 _UAPI_LINUX_IN6_H 22 #define _UAPI_LINUX_IN6_H 23 24 #include <linux/types.h> 25 #include <linux/libc-compat.h> 26 27 /* 28 * IPv6 address structure 29 */ 30 31 #if __UAPI_DEF_IN6_ADDR 32 struct in6_addr { 33 union { 34 __u8 u6_addr8[16]; 35 #if __UAPI_DEF_IN6_ADDR_ALT 36 __be16 u6_addr16[8]; 37 __be32 u6_addr32[4]; 38 #endif 39 } in6_u; 40 #define s6_addr in6_u.u6_addr8 41 #if __UAPI_DEF_IN6_ADDR_ALT 42 #define s6_addr16 in6_u.u6_addr16 43 #define s6_addr32 in6_u.u6_addr32 44 #endif 45 }; 46 #endif /* __UAPI_DEF_IN6_ADDR */ 47 48 #if __UAPI_DEF_SOCKADDR_IN6 49 struct sockaddr_in6 { 50 unsigned short int sin6_family; /* AF_INET6 */ 51 __be16 sin6_port; /* Transport layer port # */ 52 __be32 sin6_flowinfo; /* IPv6 flow information */ 53 struct in6_addr sin6_addr; /* IPv6 address */ 54 __u32 sin6_scope_id; /* scope id (new in RFC2553) */ 55 }; 56 #endif /* __UAPI_DEF_SOCKADDR_IN6 */ 57 58 #if __UAPI_DEF_IPV6_MREQ 59 struct ipv6_mreq { 60 /* IPv6 multicast address of group */ 61 struct in6_addr ipv6mr_multiaddr; 62 63 /* local IPv6 address of interface */ 64 int ipv6mr_ifindex; 65 }; 66 #endif /* __UAPI_DEF_IVP6_MREQ */ 67 68 #define ipv6mr_acaddr ipv6mr_multiaddr 69 70 struct in6_flowlabel_req { 71 struct in6_addr flr_dst; 72 __be32 flr_label; 73 __u8 flr_action; 74 __u8 flr_share; 75 __u16 flr_flags; 76 __u16 flr_expires; 77 __u16 flr_linger; 78 __u32 __flr_pad; 79 /* Options in format of IPV6_PKTOPTIONS */ 80 }; 81 82 #define IPV6_FL_A_GET 0 83 #define IPV6_FL_A_PUT 1 84 #define IPV6_FL_A_RENEW 2 85 86 #define IPV6_FL_F_CREATE 1 87 #define IPV6_FL_F_EXCL 2 88 #define IPV6_FL_F_REFLECT 4 89 90 #define IPV6_FL_S_NONE 0 91 #define IPV6_FL_S_EXCL 1 92 #define IPV6_FL_S_PROCESS 2 93 #define IPV6_FL_S_USER 3 94 #define IPV6_FL_S_ANY 255 95 96 97 /* 98 * Bitmask constant declarations to help applications select out the 99 * flow label and priority fields. 100 * 101 * Note that this are in host byte order while the flowinfo field of 102 * sockaddr_in6 is in network byte order. 103 */ 104 105 #define IPV6_FLOWINFO_FLOWLABEL 0x000fffff 106 #define IPV6_FLOWINFO_PRIORITY 0x0ff00000 107 108 /* These definitions are obsolete */ 109 #define IPV6_PRIORITY_UNCHARACTERIZED 0x0000 110 #define IPV6_PRIORITY_FILLER 0x0100 111 #define IPV6_PRIORITY_UNATTENDED 0x0200 112 #define IPV6_PRIORITY_RESERVED1 0x0300 113 #define IPV6_PRIORITY_BULK 0x0400 114 #define IPV6_PRIORITY_RESERVED2 0x0500 115 #define IPV6_PRIORITY_INTERACTIVE 0x0600 116 #define IPV6_PRIORITY_CONTROL 0x0700 117 #define IPV6_PRIORITY_8 0x0800 118 #define IPV6_PRIORITY_9 0x0900 119 #define IPV6_PRIORITY_10 0x0a00 120 #define IPV6_PRIORITY_11 0x0b00 121 #define IPV6_PRIORITY_12 0x0c00 122 #define IPV6_PRIORITY_13 0x0d00 123 #define IPV6_PRIORITY_14 0x0e00 124 #define IPV6_PRIORITY_15 0x0f00 125 126 /* 127 * IPV6 extension headers 128 */ 129 #if __UAPI_DEF_IPPROTO_V6 130 enum { 131 IPPROTO_HOPOPTS = 0, /* IPv6 hop-by-hop options */ 132 #define IPPROTO_HOPOPTS IPPROTO_HOPOPTS 133 IPPROTO_ROUTING = 43, /* IPv6 routing header */ 134 #define IPPROTO_ROUTING IPPROTO_ROUTING 135 IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header */ 136 #define IPPROTO_FRAGMENT IPPROTO_FRAGMENT 137 IPPROTO_ICMPV6 = 58, /* ICMPv6 */ 138 #define IPPROTO_ICMPV6 IPPROTO_ICMPV6 139 IPPROTO_NONE = 59, /* IPv6 no next header */ 140 #define IPPROTO_NONE IPPROTO_NONE 141 IPPROTO_DSTOPTS = 60, /* IPv6 destination options */ 142 #define IPPROTO_DSTOPTS IPPROTO_DSTOPTS 143 IPPROTO_MH = 135, /* IPv6 mobility header */ 144 #define IPPROTO_MH IPPROTO_MH 145 }; 146 #endif /* __UAPI_DEF_IPPROTO_V6 */ 147 148 /* 149 * IPv6 TLV options. 150 */ 151 #define IPV6_TLV_PAD1 0 152 #define IPV6_TLV_PADN 1 153 #define IPV6_TLV_ROUTERALERT 5 154 #define IPV6_TLV_JUMBO 194 155 #define IPV6_TLV_HAO 201 /* home address option */ 156 157 /* 158 * IPV6 socket options 159 */ 160 161 #define IPV6_ADDRFORM 1 162 #define IPV6_2292PKTINFO 2 163 #define IPV6_2292HOPOPTS 3 164 #define IPV6_2292DSTOPTS 4 165 #define IPV6_2292RTHDR 5 166 #define IPV6_2292PKTOPTIONS 6 167 #define IPV6_CHECKSUM 7 168 #define IPV6_2292HOPLIMIT 8 169 #define IPV6_NEXTHOP 9 170 #define IPV6_AUTHHDR 10 /* obsolete */ 171 #define IPV6_FLOWINFO 11 172 173 #define IPV6_UNICAST_HOPS 16 174 #define IPV6_MULTICAST_IF 17 175 #define IPV6_MULTICAST_HOPS 18 176 #define IPV6_MULTICAST_LOOP 19 177 #define IPV6_ADD_MEMBERSHIP 20 178 #define IPV6_DROP_MEMBERSHIP 21 179 #define IPV6_ROUTER_ALERT 22 180 #define IPV6_MTU_DISCOVER 23 181 #define IPV6_MTU 24 182 #define IPV6_RECVERR 25 183 #define IPV6_V6ONLY 26 184 #define IPV6_JOIN_ANYCAST 27 185 #define IPV6_LEAVE_ANYCAST 28 186 187 /* IPV6_MTU_DISCOVER values */ 188 #define IPV6_PMTUDISC_DONT 0 189 #define IPV6_PMTUDISC_WANT 1 190 #define IPV6_PMTUDISC_DO 2 191 #define IPV6_PMTUDISC_PROBE 3 192 /* same as IPV6_PMTUDISC_PROBE, provided for symetry with IPv4 193 * also see comments on IP_PMTUDISC_INTERFACE 194 */ 195 #define IPV6_PMTUDISC_INTERFACE 4 196 197 /* Flowlabel */ 198 #define IPV6_FLOWLABEL_MGR 32 199 #define IPV6_FLOWINFO_SEND 33 200 201 #define IPV6_IPSEC_POLICY 34 202 #define IPV6_XFRM_POLICY 35 203 204 /* 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 /* RFC5014: Source address selection */ 269 #define IPV6_ADDR_PREFERENCES 72 270 271 #define IPV6_PREFER_SRC_TMP 0x0001 272 #define IPV6_PREFER_SRC_PUBLIC 0x0002 273 #define IPV6_PREFER_SRC_PUBTMP_DEFAULT 0x0100 274 #define IPV6_PREFER_SRC_COA 0x0004 275 #define IPV6_PREFER_SRC_HOME 0x0400 276 #define IPV6_PREFER_SRC_CGA 0x0008 277 #define IPV6_PREFER_SRC_NONCGA 0x0800 278 279 /* RFC5082: Generalized Ttl Security Mechanism */ 280 #define IPV6_MINHOPCOUNT 73 281 282 #define IPV6_ORIGDSTADDR 74 283 #define IPV6_RECVORIGDSTADDR IPV6_ORIGDSTADDR 284 #define IPV6_TRANSPARENT 75 285 #define IPV6_UNICAST_IF 76 286 287 /* 288 * Multicast Routing: 289 * see include/uapi/linux/mroute6.h. 290 * 291 * MRT6_BASE 200 292 * ... 293 * MRT6_MAX 294 */ 295 #endif /* _UAPI_LINUX_IN6_H */ 296