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/*
* Types and definitions for AF_INET6
* Linux INET6 implementation
*
* Authors:
* Pedro Roque <roque@di.fc.ul.pt>
*
* Sources:
* IPv6 Program Interfaces for BSD Systems
* <draft-ietf-ipngwg-bsd-api-05.txt>
*
* Advanced Sockets API for IPv6
* <draft-stevens-advanced-api-00.txt>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _LINUX_IN6_H
#define _LINUX_IN6_H
#include <linux/types.h>
/*
* IPv6 address structure
*/
struct in6_addr
{
union
{
__u8 u6_addr8[16];
__u16 u6_addr16[8];
__u32 u6_addr32[4];
#if (~0UL) > 0xffffffff
#ifndef __RELAX_IN6_ADDR_ALIGNMENT
/* Alas, protocols do not respect 64bit alignmnet.
rsvp/pim/... are broken. However, it is good
idea to force correct alignment always, when
it is possible.
*/
__u64 u6_addr64[2];
#endif
#endif
} in6_u;
#define s6_addr in6_u.u6_addr8
#define s6_addr16 in6_u.u6_addr16
#define s6_addr32 in6_u.u6_addr32
#define s6_addr64 in6_u.u6_addr64
};
struct sockaddr_in6 {
unsigned short int sin6_family; /* AF_INET6 */
__u16 sin6_port; /* Transport layer port # */
__u32 sin6_flowinfo; /* IPv6 flow information */
struct in6_addr sin6_addr; /* IPv6 address */
};
struct ipv6_mreq {
/* IPv6 multicast address of group */
struct in6_addr ipv6mr_multiaddr;
/* local IPv6 address of interface */
int ipv6mr_ifindex;
};
struct in6_flowlabel_req
{
struct in6_addr flr_dst;
__u32 flr_label;
__u8 flr_action;
__u8 flr_share;
__u16 flr_flags;
__u16 flr_expires;
__u16 flr_linger;
__u32 __flr_pad;
/* Options in format of IPV6_PKTOPTIONS */
};
#define IPV6_FL_A_GET 0
#define IPV6_FL_A_PUT 1
#define IPV6_FL_A_RENEW 2
#define IPV6_FL_F_CREATE 1
#define IPV6_FL_F_EXCL 2
#define IPV6_FL_S_NONE 0
#define IPV6_FL_S_EXCL 1
#define IPV6_FL_S_PROCESS 2
#define IPV6_FL_S_USER 3
#define IPV6_FL_S_ANY 255
/*
* Bitmask constant declarations to help applications select out the
* flow label and priority fields.
*
* Note that this are in host byte order while the flowinfo field of
* sockaddr_in6 is in network byte order.
*/
#define IPV6_FLOWINFO_FLOWLABEL 0x000fffff
#define IPV6_FLOWINFO_PRIORITY 0x0ff00000
/* These defintions are obsolete */
#define IPV6_PRIORITY_UNCHARACTERIZED 0x0000
#define IPV6_PRIORITY_FILLER 0x0100
#define IPV6_PRIORITY_UNATTENDED 0x0200
#define IPV6_PRIORITY_RESERVED1 0x0300
#define IPV6_PRIORITY_BULK 0x0400
#define IPV6_PRIORITY_RESERVED2 0x0500
#define IPV6_PRIORITY_INTERACTIVE 0x0600
#define IPV6_PRIORITY_CONTROL 0x0700
#define IPV6_PRIORITY_8 0x0800
#define IPV6_PRIORITY_9 0x0900
#define IPV6_PRIORITY_10 0x0a00
#define IPV6_PRIORITY_11 0x0b00
#define IPV6_PRIORITY_12 0x0c00
#define IPV6_PRIORITY_13 0x0d00
#define IPV6_PRIORITY_14 0x0e00
#define IPV6_PRIORITY_15 0x0f00
/*
* IPV6 extension headers
*/
#define IPPROTO_HOPOPTS 0 /* IPv6 hop-by-hop options */
#define IPPROTO_ROUTING 43 /* IPv6 routing header */
#define IPPROTO_FRAGMENT 44 /* IPv6 fragmentation header */
#define IPPROTO_ICMPV6 58 /* ICMPv6 */
#define IPPROTO_NONE 59 /* IPv6 no next header */
#define IPPROTO_DSTOPTS 60 /* IPv6 destination options */
/*
* IPv6 TLV options.
*/
#define IPV6_TLV_PAD0 0
#define IPV6_TLV_PADN 1
#define IPV6_TLV_ROUTERALERT 20
#define IPV6_TLV_JUMBO 194
/*
* IPV6 socket options
*/
#define IPV6_ADDRFORM 1
#define IPV6_PKTINFO 2
#define IPV6_HOPOPTS 3
#define IPV6_DSTOPTS 4
#define IPV6_RTHDR 5
#define IPV6_PKTOPTIONS 6
#define IPV6_CHECKSUM 7
#define IPV6_HOPLIMIT 8
#define IPV6_NEXTHOP 9
#define IPV6_AUTHHDR 10
#define IPV6_FLOWINFO 11
#if 0
/* Aliases for obsolete names */
#define IPV6_RXHOPOPTS IPV6_HOPOPTS
#define IPV6_RXDSTOPTS IPV6_DSTOPTS
#define IPV6_RXSRCRT IPV6_RTHDR
#endif
/*
* Alternative names
*/
#define SCM_SRCRT IPV6_RXSRCRT
#define IPV6_UNICAST_HOPS 16
#define IPV6_MULTICAST_IF 17
#define IPV6_MULTICAST_HOPS 18
#define IPV6_MULTICAST_LOOP 19
#define IPV6_ADD_MEMBERSHIP 20
#define IPV6_DROP_MEMBERSHIP 21
#define IPV6_ROUTER_ALERT 22
#define IPV6_MTU_DISCOVER 23
#define IPV6_MTU 24
#define IPV6_RECVERR 25
/* IPV6_MTU_DISCOVER values */
#define IPV6_PMTUDISC_DONT 0
#define IPV6_PMTUDISC_WANT 1
#define IPV6_PMTUDISC_DO 2
/* Flowlabel */
#define IPV6_FLOWLABEL_MGR 32
#define IPV6_FLOWINFO_SEND 33
#endif
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