300 lines
7.3 KiB
C
300 lines
7.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
|
|
/*
|
|
* 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>
|
|
#include <linux/libc-compat.h>
|
|
|
|
/*
|
|
* IPv6 address structure
|
|
*/
|
|
|
|
#if __UAPI_DEF_IN6_ADDR
|
|
struct in6_addr {
|
|
union {
|
|
__u8 u6_addr8[16];
|
|
#if __UAPI_DEF_IN6_ADDR_ALT
|
|
__be16 u6_addr16[8];
|
|
__be32 u6_addr32[4];
|
|
#endif
|
|
} in6_u;
|
|
#define s6_addr in6_u.u6_addr8
|
|
#if __UAPI_DEF_IN6_ADDR_ALT
|
|
#define s6_addr16 in6_u.u6_addr16
|
|
#define s6_addr32 in6_u.u6_addr32
|
|
#endif
|
|
};
|
|
#endif /* __UAPI_DEF_IN6_ADDR */
|
|
|
|
#if __UAPI_DEF_SOCKADDR_IN6
|
|
struct sockaddr_in6 {
|
|
unsigned short int sin6_family; /* AF_INET6 */
|
|
__be16 sin6_port; /* Transport layer port # */
|
|
__be32 sin6_flowinfo; /* IPv6 flow information */
|
|
struct in6_addr sin6_addr; /* IPv6 address */
|
|
__u32 sin6_scope_id; /* scope id (new in RFC2553) */
|
|
};
|
|
#endif /* __UAPI_DEF_SOCKADDR_IN6 */
|
|
|
|
#if __UAPI_DEF_IPV6_MREQ
|
|
struct ipv6_mreq {
|
|
/* IPv6 multicast address of group */
|
|
struct in6_addr ipv6mr_multiaddr;
|
|
|
|
/* local IPv6 address of interface */
|
|
int ipv6mr_ifindex;
|
|
};
|
|
#endif /* __UAPI_DEF_IVP6_MREQ */
|
|
|
|
#define ipv6mr_acaddr ipv6mr_multiaddr
|
|
|
|
struct in6_flowlabel_req {
|
|
struct in6_addr flr_dst;
|
|
__be32 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_F_REFLECT 4
|
|
#define IPV6_FL_F_REMOTE 8
|
|
|
|
#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 definitions 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
|
|
*/
|
|
#if __UAPI_DEF_IPPROTO_V6
|
|
#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 */
|
|
#define IPPROTO_MH 135 /* IPv6 mobility header */
|
|
#endif /* __UAPI_DEF_IPPROTO_V6 */
|
|
|
|
/*
|
|
* IPv6 TLV options.
|
|
*/
|
|
#define IPV6_TLV_PAD1 0
|
|
#define IPV6_TLV_PADN 1
|
|
#define IPV6_TLV_ROUTERALERT 5
|
|
#define IPV6_TLV_CALIPSO 7 /* RFC 5570 */
|
|
#define IPV6_TLV_JUMBO 194
|
|
#define IPV6_TLV_HAO 201 /* home address option */
|
|
|
|
/*
|
|
* IPV6 socket options
|
|
*/
|
|
#if __UAPI_DEF_IPV6_OPTIONS
|
|
#define IPV6_ADDRFORM 1
|
|
#define IPV6_2292PKTINFO 2
|
|
#define IPV6_2292HOPOPTS 3
|
|
#define IPV6_2292DSTOPTS 4
|
|
#define IPV6_2292RTHDR 5
|
|
#define IPV6_2292PKTOPTIONS 6
|
|
#define IPV6_CHECKSUM 7
|
|
#define IPV6_2292HOPLIMIT 8
|
|
#define IPV6_NEXTHOP 9
|
|
#define IPV6_AUTHHDR 10 /* obsolete */
|
|
#define IPV6_FLOWINFO 11
|
|
|
|
#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
|
|
#define IPV6_V6ONLY 26
|
|
#define IPV6_JOIN_ANYCAST 27
|
|
#define IPV6_LEAVE_ANYCAST 28
|
|
#define IPV6_MULTICAST_ALL 29
|
|
|
|
/* IPV6_MTU_DISCOVER values */
|
|
#define IPV6_PMTUDISC_DONT 0
|
|
#define IPV6_PMTUDISC_WANT 1
|
|
#define IPV6_PMTUDISC_DO 2
|
|
#define IPV6_PMTUDISC_PROBE 3
|
|
/* same as IPV6_PMTUDISC_PROBE, provided for symetry with IPv4
|
|
* also see comments on IP_PMTUDISC_INTERFACE
|
|
*/
|
|
#define IPV6_PMTUDISC_INTERFACE 4
|
|
/* weaker version of IPV6_PMTUDISC_INTERFACE, which allows packets to
|
|
* get fragmented if they exceed the interface mtu
|
|
*/
|
|
#define IPV6_PMTUDISC_OMIT 5
|
|
|
|
/* Flowlabel */
|
|
#define IPV6_FLOWLABEL_MGR 32
|
|
#define IPV6_FLOWINFO_SEND 33
|
|
|
|
#define IPV6_IPSEC_POLICY 34
|
|
#define IPV6_XFRM_POLICY 35
|
|
#define IPV6_HDRINCL 36
|
|
#endif
|
|
|
|
/*
|
|
* Multicast:
|
|
* Following socket options are shared between IPv4 and IPv6.
|
|
*
|
|
* MCAST_JOIN_GROUP 42
|
|
* MCAST_BLOCK_SOURCE 43
|
|
* MCAST_UNBLOCK_SOURCE 44
|
|
* MCAST_LEAVE_GROUP 45
|
|
* MCAST_JOIN_SOURCE_GROUP 46
|
|
* MCAST_LEAVE_SOURCE_GROUP 47
|
|
* MCAST_MSFILTER 48
|
|
*/
|
|
|
|
/*
|
|
* Advanced API (RFC3542) (1)
|
|
*
|
|
* Note: IPV6_RECVRTHDRDSTOPTS does not exist. see net/ipv6/datagram.c.
|
|
*/
|
|
|
|
#define IPV6_RECVPKTINFO 49
|
|
#define IPV6_PKTINFO 50
|
|
#define IPV6_RECVHOPLIMIT 51
|
|
#define IPV6_HOPLIMIT 52
|
|
#define IPV6_RECVHOPOPTS 53
|
|
#define IPV6_HOPOPTS 54
|
|
#define IPV6_RTHDRDSTOPTS 55
|
|
#define IPV6_RECVRTHDR 56
|
|
#define IPV6_RTHDR 57
|
|
#define IPV6_RECVDSTOPTS 58
|
|
#define IPV6_DSTOPTS 59
|
|
#define IPV6_RECVPATHMTU 60
|
|
#define IPV6_PATHMTU 61
|
|
#define IPV6_DONTFRAG 62
|
|
#if 0 /* not yet */
|
|
#define IPV6_USE_MIN_MTU 63
|
|
#endif
|
|
|
|
/*
|
|
* Netfilter (1)
|
|
*
|
|
* Following socket options are used in ip6_tables;
|
|
* see include/linux/netfilter_ipv6/ip6_tables.h.
|
|
*
|
|
* IP6T_SO_SET_REPLACE / IP6T_SO_GET_INFO 64
|
|
* IP6T_SO_SET_ADD_COUNTERS / IP6T_SO_GET_ENTRIES 65
|
|
*/
|
|
|
|
/*
|
|
* Advanced API (RFC3542) (2)
|
|
*/
|
|
#define IPV6_RECVTCLASS 66
|
|
#define IPV6_TCLASS 67
|
|
|
|
/*
|
|
* Netfilter (2)
|
|
*
|
|
* Following socket options are used in ip6_tables;
|
|
* see include/linux/netfilter_ipv6/ip6_tables.h.
|
|
*
|
|
* IP6T_SO_GET_REVISION_MATCH 68
|
|
* IP6T_SO_GET_REVISION_TARGET 69
|
|
* IP6T_SO_ORIGINAL_DST 80
|
|
*/
|
|
|
|
#define IPV6_AUTOFLOWLABEL 70
|
|
/* RFC5014: Source address selection */
|
|
#define IPV6_ADDR_PREFERENCES 72
|
|
|
|
#define IPV6_PREFER_SRC_TMP 0x0001
|
|
#define IPV6_PREFER_SRC_PUBLIC 0x0002
|
|
#define IPV6_PREFER_SRC_PUBTMP_DEFAULT 0x0100
|
|
#define IPV6_PREFER_SRC_COA 0x0004
|
|
#define IPV6_PREFER_SRC_HOME 0x0400
|
|
#define IPV6_PREFER_SRC_CGA 0x0008
|
|
#define IPV6_PREFER_SRC_NONCGA 0x0800
|
|
|
|
/* RFC5082: Generalized Ttl Security Mechanism */
|
|
#define IPV6_MINHOPCOUNT 73
|
|
|
|
#define IPV6_ORIGDSTADDR 74
|
|
#define IPV6_RECVORIGDSTADDR IPV6_ORIGDSTADDR
|
|
#define IPV6_TRANSPARENT 75
|
|
#define IPV6_UNICAST_IF 76
|
|
#define IPV6_RECVFRAGSIZE 77
|
|
#define IPV6_FREEBIND 78
|
|
|
|
/*
|
|
* Multicast Routing:
|
|
* see include/uapi/linux/mroute6.h.
|
|
*
|
|
* MRT6_BASE 200
|
|
* ...
|
|
* MRT6_MAX
|
|
*/
|
|
#endif /* _LINUX_IN6_H */
|