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 _LINUX_IN6_H 22#define _LINUX_IN6_H 23 24#include <linux/types.h> 25 26/* 27 * IPv6 address structure 28 */ 29 30struct in6_addr 31{ 32 union 33 { 34 __u8 u6_addr8[16]; 35 __u16 u6_addr16[8]; 36 __u32 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 43struct sockaddr_in6 { 44 unsigned short int sin6_family; /* AF_INET6 */ 45 __u16 sin6_port; /* Transport layer port # */ 46 __u32 sin6_flowinfo; /* IPv6 flow information */ 47 struct in6_addr sin6_addr; /* IPv6 address */ 48 __u32 sin6_scope_id; /* scope id (new in RFC2553) */ 49}; 50 51struct ipv6_mreq { 52 /* IPv6 multicast address of group */ 53 struct in6_addr ipv6mr_multiaddr; 54 55 /* local IPv6 address of interface */ 56 int ipv6mr_ifindex; 57}; 58 59struct in6_flowlabel_req 60{ 61 struct in6_addr flr_dst; 62 __u32 flr_label; 63 __u8 flr_action; 64 __u8 flr_share; 65 __u16 flr_flags; 66 __u16 flr_expires; 67 __u16 flr_linger; 68 __u32 __flr_pad; 69 /* Options in format of IPV6_PKTOPTIONS */ 70}; 71 72#define IPV6_FL_A_GET 0 73#define IPV6_FL_A_PUT 1 74#define IPV6_FL_A_RENEW 2 75 76#define IPV6_FL_F_CREATE 1 77#define IPV6_FL_F_EXCL 2 78 79#define IPV6_FL_S_NONE 0 80#define IPV6_FL_S_EXCL 1 81#define IPV6_FL_S_PROCESS 2 82#define IPV6_FL_S_USER 3 83#define IPV6_FL_S_ANY 255 84 85 86/* 87 * Bitmask constant declarations to help applications select out the 88 * flow label and priority fields. 89 * 90 * Note that this are in host byte order while the flowinfo field of 91 * sockaddr_in6 is in network byte order. 92 */ 93 94#define IPV6_FLOWINFO_FLOWLABEL 0x000fffff 95#define IPV6_FLOWINFO_PRIORITY 0x0ff00000 96 97/* These defintions are obsolete */ 98#define IPV6_PRIORITY_UNCHARACTERIZED 0x0000 99#define IPV6_PRIORITY_FILLER 0x0100 100#define IPV6_PRIORITY_UNATTENDED 0x0200 101#define IPV6_PRIORITY_RESERVED1 0x0300 102#define IPV6_PRIORITY_BULK 0x0400 103#define IPV6_PRIORITY_RESERVED2 0x0500 104#define IPV6_PRIORITY_INTERACTIVE 0x0600 105#define IPV6_PRIORITY_CONTROL 0x0700 106#define IPV6_PRIORITY_8 0x0800 107#define IPV6_PRIORITY_9 0x0900 108#define IPV6_PRIORITY_10 0x0a00 109#define IPV6_PRIORITY_11 0x0b00 110#define IPV6_PRIORITY_12 0x0c00 111#define IPV6_PRIORITY_13 0x0d00 112#define IPV6_PRIORITY_14 0x0e00 113#define IPV6_PRIORITY_15 0x0f00 114 115/* 116 * IPV6 extension headers 117 */ 118#define IPPROTO_HOPOPTS 0 /* IPv6 hop-by-hop options */ 119#define IPPROTO_ROUTING 43 /* IPv6 routing header */ 120#define IPPROTO_FRAGMENT 44 /* IPv6 fragmentation header */ 121#define IPPROTO_ICMPV6 58 /* ICMPv6 */ 122#define IPPROTO_NONE 59 /* IPv6 no next header */ 123#define IPPROTO_DSTOPTS 60 /* IPv6 destination options */ 124 125/* 126 * IPv6 TLV options. 127 */ 128#define IPV6_TLV_PAD0 0 129#define IPV6_TLV_PADN 1 130#define IPV6_TLV_ROUTERALERT 5 131#define IPV6_TLV_JUMBO 194 132 133/* 134 * IPV6 socket options 135 */ 136 137#define IPV6_ADDRFORM 1 138#define IPV6_PKTINFO 2 139#define IPV6_HOPOPTS 3 140#define IPV6_DSTOPTS 4 141#define IPV6_RTHDR 5 142#define IPV6_PKTOPTIONS 6 143#define IPV6_CHECKSUM 7 144#define IPV6_HOPLIMIT 8 145#define IPV6_NEXTHOP 9 146#define IPV6_AUTHHDR 10 147#define IPV6_FLOWINFO 11 148 149#define IPV6_UNICAST_HOPS 16 150#define IPV6_MULTICAST_IF 17 151#define IPV6_MULTICAST_HOPS 18 152#define IPV6_MULTICAST_LOOP 19 153#define IPV6_ADD_MEMBERSHIP 20 154#define IPV6_DROP_MEMBERSHIP 21 155#define IPV6_ROUTER_ALERT 22 156#define IPV6_MTU_DISCOVER 23 157#define IPV6_MTU 24 158#define IPV6_RECVERR 25 159 160/* IPV6_MTU_DISCOVER values */ 161#define IPV6_PMTUDISC_DONT 0 162#define IPV6_PMTUDISC_WANT 1 163#define IPV6_PMTUDISC_DO 2 164 165/* Flowlabel */ 166#define IPV6_FLOWLABEL_MGR 32 167#define IPV6_FLOWINFO_SEND 33 168 169 170#endif 171