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 extern const struct in6_addr in6addr_any; 48 #define IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } } 49 extern const struct in6_addr in6addr_loopback; 50 #define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } } 51 52 struct sockaddr_in6 { 53 unsigned short int sin6_family; /* AF_INET6 */ 54 __be16 sin6_port; /* Transport layer port # */ 55 __be32 sin6_flowinfo; /* IPv6 flow information */ 56 struct in6_addr sin6_addr; /* IPv6 address */ 57 __u32 sin6_scope_id; /* scope id (new in RFC2553) */ 58 }; 59 60 struct ipv6_mreq { 61 /* IPv6 multicast address of group */ 62 struct in6_addr ipv6mr_multiaddr; 63 64 /* local IPv6 address of interface */ 65 int ipv6mr_ifindex; 66 }; 67 68 #define ipv6mr_acaddr ipv6mr_multiaddr 69 70 struct in6_flowlabel_req 71 { 72 struct in6_addr flr_dst; 73 __be32 flr_label; 74 __u8 flr_action; 75 __u8 flr_share; 76 __u16 flr_flags; 77 __u16 flr_expires; 78 __u16 flr_linger; 79 __u32 __flr_pad; 80 /* Options in format of IPV6_PKTOPTIONS */ 81 }; 82 83 #define IPV6_FL_A_GET 0 84 #define IPV6_FL_A_PUT 1 85 #define IPV6_FL_A_RENEW 2 86 87 #define IPV6_FL_F_CREATE 1 88 #define IPV6_FL_F_EXCL 2 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 defintions 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 #define IPPROTO_HOPOPTS 0 /* IPv6 hop-by-hop options */ 130 #define IPPROTO_ROUTING 43 /* IPv6 routing header */ 131 #define IPPROTO_FRAGMENT 44 /* IPv6 fragmentation header */ 132 #define IPPROTO_ICMPV6 58 /* ICMPv6 */ 133 #define IPPROTO_NONE 59 /* IPv6 no next header */ 134 #define IPPROTO_DSTOPTS 60 /* IPv6 destination options */ 135 #define IPPROTO_MH 135 /* IPv6 mobility header */ 136 137 /* 138 * IPv6 TLV options. 139 */ 140 #define IPV6_TLV_PAD0 0 141 #define IPV6_TLV_PADN 1 142 #define IPV6_TLV_ROUTERALERT 5 143 #define IPV6_TLV_JUMBO 194 144 #define IPV6_TLV_HAO 201 /* home address option */ 145 146 /* 147 * IPV6 socket options 148 */ 149 150 #define IPV6_ADDRFORM 1 151 #define IPV6_2292PKTINFO 2 152 #define IPV6_2292HOPOPTS 3 153 #define IPV6_2292DSTOPTS 4 154 #define IPV6_2292RTHDR 5 155 #define IPV6_2292PKTOPTIONS 6 156 #define IPV6_CHECKSUM 7 157 #define IPV6_2292HOPLIMIT 8 158 #define IPV6_NEXTHOP 9 159 #define IPV6_AUTHHDR 10 /* obsolete */ 160 #define IPV6_FLOWINFO 11 161 162 #define IPV6_UNICAST_HOPS 16 163 #define IPV6_MULTICAST_IF 17 164 #define IPV6_MULTICAST_HOPS 18 165 #define IPV6_MULTICAST_LOOP 19 166 #define IPV6_ADD_MEMBERSHIP 20 167 #define IPV6_DROP_MEMBERSHIP 21 168 #define IPV6_ROUTER_ALERT 22 169 #define IPV6_MTU_DISCOVER 23 170 #define IPV6_MTU 24 171 #define IPV6_RECVERR 25 172 #define IPV6_V6ONLY 26 173 #define IPV6_JOIN_ANYCAST 27 174 #define IPV6_LEAVE_ANYCAST 28 175 176 /* IPV6_MTU_DISCOVER values */ 177 #define IPV6_PMTUDISC_DONT 0 178 #define IPV6_PMTUDISC_WANT 1 179 #define IPV6_PMTUDISC_DO 2 180 #define IPV6_PMTUDISC_PROBE 3 181 182 /* Flowlabel */ 183 #define IPV6_FLOWLABEL_MGR 32 184 #define IPV6_FLOWINFO_SEND 33 185 186 #define IPV6_IPSEC_POLICY 34 187 #define IPV6_XFRM_POLICY 35 188 189 /* 190 * Multicast: 191 * Following socket options are shared between IPv4 and IPv6. 192 * 193 * MCAST_JOIN_GROUP 42 194 * MCAST_BLOCK_SOURCE 43 195 * MCAST_UNBLOCK_SOURCE 44 196 * MCAST_LEAVE_GROUP 45 197 * MCAST_JOIN_SOURCE_GROUP 46 198 * MCAST_LEAVE_SOURCE_GROUP 47 199 * MCAST_MSFILTER 48 200 */ 201 202 /* 203 * Advanced API (RFC3542) (1) 204 * 205 * Note: IPV6_RECVRTHDRDSTOPTS does not exist. see net/ipv6/datagram.c. 206 */ 207 208 #define IPV6_RECVPKTINFO 49 209 #define IPV6_PKTINFO 50 210 #define IPV6_RECVHOPLIMIT 51 211 #define IPV6_HOPLIMIT 52 212 #define IPV6_RECVHOPOPTS 53 213 #define IPV6_HOPOPTS 54 214 #define IPV6_RTHDRDSTOPTS 55 215 #define IPV6_RECVRTHDR 56 216 #define IPV6_RTHDR 57 217 #define IPV6_RECVDSTOPTS 58 218 #define IPV6_DSTOPTS 59 219 #if 0 /* not yet */ 220 #define IPV6_RECVPATHMTU 60 221 #define IPV6_PATHMTU 61 222 #define IPV6_DONTFRAG 62 223 #define IPV6_USE_MIN_MTU 63 224 #endif 225 226 /* 227 * Netfilter (1) 228 * 229 * Following socket options are used in ip6_tables; 230 * see include/linux/netfilter_ipv6/ip6_tables.h. 231 * 232 * IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO 64 233 * IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES 65 234 */ 235 236 /* 237 * Advanced API (RFC3542) (2) 238 */ 239 #define IPV6_RECVTCLASS 66 240 #define IPV6_TCLASS 67 241 242 /* 243 * Netfilter (2) 244 * 245 * Following socket options are used in ip6_tables; 246 * see include/linux/netfilter_ipv6/ip6_tables.h. 247 * 248 * IP6T_SO_GET_REVISION_MATCH 68 249 * IP6T_SO_GET_REVISION_TARGET 69 250 */ 251 252 #endif 253
