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 _UAPI_LINUX_IN6_H 22 #define _UAPI_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 struct sockaddr_in6 { 42 unsigned short int sin6_family; /* AF_INET6 */ 43 __be16 sin6_port; /* Transport layer port # */ 44 __be32 sin6_flowinfo; /* IPv6 flow information */ 45 struct in6_addr sin6_addr; /* IPv6 address */ 46 __u32 sin6_scope_id; /* scope id (new in RFC2553) */ 47 }; 48 49 struct ipv6_mreq { 50 /* IPv6 multicast address of group */ 51 struct in6_addr ipv6mr_multiaddr; 52 53 /* local IPv6 address of interface */ 54 int ipv6mr_ifindex; 55 }; 56 57 #define ipv6mr_acaddr ipv6mr_multiaddr 58 59 struct in6_flowlabel_req { 60 struct in6_addr flr_dst; 61 __be32 flr_label; 62 __u8 flr_action; 63 __u8 flr_share; 64 __u16 flr_flags; 65 __u16 flr_expires; 66 __u16 flr_linger; 67 __u32 __flr_pad; 68 /* Options in format of IPV6_PKTOPTIONS */ 69 }; 70 71 #define IPV6_FL_A_GET 0 72 #define IPV6_FL_A_PUT 1 73 #define IPV6_FL_A_RENEW 2 74 75 #define IPV6_FL_F_CREATE 1 76 #define IPV6_FL_F_EXCL 2 77 78 #define IPV6_FL_S_NONE 0 79 #define IPV6_FL_S_EXCL 1 80 #define IPV6_FL_S_PROCESS 2 81 #define IPV6_FL_S_USER 3 82 #define IPV6_FL_S_ANY 255 83 84 85 /* 86 * Bitmask constant declarations to help applications select out the 87 * flow label and priority fields. 88 * 89 * Note that this are in host byte order while the flowinfo field of 90 * sockaddr_in6 is in network byte order. 91 */ 92 93 #define IPV6_FLOWINFO_FLOWLABEL 0x000fffff 94 #define IPV6_FLOWINFO_PRIORITY 0x0ff00000 95 96 /* These definitions are obsolete */ 97 #define IPV6_PRIORITY_UNCHARACTERIZED 0x0000 98 #define IPV6_PRIORITY_FILLER 0x0100 99 #define IPV6_PRIORITY_UNATTENDED 0x0200 100 #define IPV6_PRIORITY_RESERVED1 0x0300 101 #define IPV6_PRIORITY_BULK 0x0400 102 #define IPV6_PRIORITY_RESERVED2 0x0500 103 #define IPV6_PRIORITY_INTERACTIVE 0x0600 104 #define IPV6_PRIORITY_CONTROL 0x0700 105 #define IPV6_PRIORITY_8 0x0800 106 #define IPV6_PRIORITY_9 0x0900 107 #define IPV6_PRIORITY_10 0x0a00 108 #define IPV6_PRIORITY_11 0x0b00 109 #define IPV6_PRIORITY_12 0x0c00 110 #define IPV6_PRIORITY_13 0x0d00 111 #define IPV6_PRIORITY_14 0x0e00 112 #define IPV6_PRIORITY_15 0x0f00 113 114 /* 115 * IPV6 extension headers 116 */ 117 #define IPPROTO_HOPOPTS 0 /* IPv6 hop-by-hop options */ 118 #define IPPROTO_ROUTING 43 /* IPv6 routing header */ 119 #define IPPROTO_FRAGMENT 44 /* IPv6 fragmentation header */ 120 #define IPPROTO_ICMPV6 58 /* ICMPv6 */ 121 #define IPPROTO_NONE 59 /* IPv6 no next header */ 122 #define IPPROTO_DSTOPTS 60 /* IPv6 destination options */ 123 #define IPPROTO_MH 135 /* IPv6 mobility header */ 124 125 /* 126 * IPv6 TLV options. 127 */ 128 #define IPV6_TLV_PAD1 0 129 #define IPV6_TLV_PADN 1 130 #define IPV6_TLV_ROUTERALERT 5 131 #define IPV6_TLV_JUMBO 194 132 #define IPV6_TLV_HAO 201 /* home address option */ 133 134 /* 135 * IPV6 socket options 136 */ 137 138 #define IPV6_ADDRFORM 1 139 #define IPV6_2292PKTINFO 2 140 #define IPV6_2292HOPOPTS 3 141 #define IPV6_2292DSTOPTS 4 142 #define IPV6_2292RTHDR 5 143 #define IPV6_2292PKTOPTIONS 6 144 #define IPV6_CHECKSUM 7 145 #define IPV6_2292HOPLIMIT 8 146 #define IPV6_NEXTHOP 9 147 #define IPV6_AUTHHDR 10 /* obsolete */ 148 #define IPV6_FLOWINFO 11 149 150 #define IPV6_UNICAST_HOPS 16 151 #define IPV6_MULTICAST_IF 17 152 #define IPV6_MULTICAST_HOPS 18 153 #define IPV6_MULTICAST_LOOP 19 154 #define IPV6_ADD_MEMBERSHIP 20 155 #define IPV6_DROP_MEMBERSHIP 21 156 #define IPV6_ROUTER_ALERT 22 157 #define IPV6_MTU_DISCOVER 23 158 #define IPV6_MTU 24 159 #define IPV6_RECVERR 25 160 #define IPV6_V6ONLY 26 161 #define IPV6_JOIN_ANYCAST 27 162 #define IPV6_LEAVE_ANYCAST 28 163 164 /* IPV6_MTU_DISCOVER values */ 165 #define IPV6_PMTUDISC_DONT 0 166 #define IPV6_PMTUDISC_WANT 1 167 #define IPV6_PMTUDISC_DO 2 168 #define IPV6_PMTUDISC_PROBE 3 169 170 /* Flowlabel */ 171 #define IPV6_FLOWLABEL_MGR 32 172 #define IPV6_FLOWINFO_SEND 33 173 174 #define IPV6_IPSEC_POLICY 34 175 #define IPV6_XFRM_POLICY 35 176 177 /* 178 * Multicast: 179 * Following socket options are shared between IPv4 and IPv6. 180 * 181 * MCAST_JOIN_GROUP 42 182 * MCAST_BLOCK_SOURCE 43 183 * MCAST_UNBLOCK_SOURCE 44 184 * MCAST_LEAVE_GROUP 45 185 * MCAST_JOIN_SOURCE_GROUP 46 186 * MCAST_LEAVE_SOURCE_GROUP 47 187 * MCAST_MSFILTER 48 188 */ 189 190 /* 191 * Advanced API (RFC3542) (1) 192 * 193 * Note: IPV6_RECVRTHDRDSTOPTS does not exist. see net/ipv6/datagram.c. 194 */ 195 196 #define IPV6_RECVPKTINFO 49 197 #define IPV6_PKTINFO 50 198 #define IPV6_RECVHOPLIMIT 51 199 #define IPV6_HOPLIMIT 52 200 #define IPV6_RECVHOPOPTS 53 201 #define IPV6_HOPOPTS 54 202 #define IPV6_RTHDRDSTOPTS 55 203 #define IPV6_RECVRTHDR 56 204 #define IPV6_RTHDR 57 205 #define IPV6_RECVDSTOPTS 58 206 #define IPV6_DSTOPTS 59 207 #define IPV6_RECVPATHMTU 60 208 #define IPV6_PATHMTU 61 209 #define IPV6_DONTFRAG 62 210 #if 0 /* not yet */ 211 #define IPV6_USE_MIN_MTU 63 212 #endif 213 214 /* 215 * Netfilter (1) 216 * 217 * Following socket options are used in ip6_tables; 218 * see include/linux/netfilter_ipv6/ip6_tables.h. 219 * 220 * IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO 64 221 * IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES 65 222 */ 223 224 /* 225 * Advanced API (RFC3542) (2) 226 */ 227 #define IPV6_RECVTCLASS 66 228 #define IPV6_TCLASS 67 229 230 /* 231 * Netfilter (2) 232 * 233 * Following socket options are used in ip6_tables; 234 * see include/linux/netfilter_ipv6/ip6_tables.h. 235 * 236 * IP6T_SO_GET_REVISION_MATCH 68 237 * IP6T_SO_GET_REVISION_TARGET 69 238 * IP6T_SO_ORIGINAL_DST 80 239 */ 240 241 /* RFC5014: Source address selection */ 242 #define IPV6_ADDR_PREFERENCES 72 243 244 #define IPV6_PREFER_SRC_TMP 0x0001 245 #define IPV6_PREFER_SRC_PUBLIC 0x0002 246 #define IPV6_PREFER_SRC_PUBTMP_DEFAULT 0x0100 247 #define IPV6_PREFER_SRC_COA 0x0004 248 #define IPV6_PREFER_SRC_HOME 0x0400 249 #define IPV6_PREFER_SRC_CGA 0x0008 250 #define IPV6_PREFER_SRC_NONCGA 0x0800 251 252 /* RFC5082: Generalized Ttl Security Mechanism */ 253 #define IPV6_MINHOPCOUNT 73 254 255 #define IPV6_ORIGDSTADDR 74 256 #define IPV6_RECVORIGDSTADDR IPV6_ORIGDSTADDR 257 #define IPV6_TRANSPARENT 75 258 #define IPV6_UNICAST_IF 76 259 260 /* 261 * Multicast Routing: 262 * see include/uapi/linux/mroute6.h. 263 * 264 * MRT6_BASE 200 265 * ... 266 * MRT6_MAX 267 */ 268 #endif /* _UAPI_LINUX_IN6_H */ 269