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/* Copyright (C) 1991-1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/* Linux version. */
#ifndef _NETINET_IN_H
# error "Never use <bits/in.h> directly; include <netinet/in.h> instead."
#endif
/* Options for use with `getsockopt' and `setsockopt' at the IP level.
The first word in the comment at the right is the data type used;
"bool" means a boolean value stored in an `int'. */
#define IP_OPTIONS 4 /* ip_opts; IP per-packet options. */
#define IP_HDRINCL 3 /* int; Header is included with data. */
#define IP_TOS 1 /* int; IP type of service and precedence. */
#define IP_TTL 2 /* int; IP time to live. */
#define IP_RECVOPTS 6 /* bool; Receive all IP options w/datagram. */
/* For BSD compatibility. */
#define IP_RECVRETOPTS IP_RETOPTS /* bool; Receive IP options for response. */
#define IP_RETOPTS 7 /* ip_opts; Set/get IP per-packet options. */
#define IP_MULTICAST_IF 32 /* in_addr; set/get IP multicast i/f */
#define IP_MULTICAST_TTL 33 /* u_char; set/get IP multicast ttl */
#define IP_MULTICAST_LOOP 34 /* i_char; set/get IP multicast loopback */
#define IP_ADD_MEMBERSHIP 35 /* ip_mreq; add an IP group membership */
#define IP_DROP_MEMBERSHIP 36 /* ip_mreq; drop an IP group membership */
#define IP_ROUTER_ALERT 5 /* bool */
#define IP_PKTINFO 8 /* bool */
#define IP_PKTOPTIONS 9
#define IP_PMTUDISC 10 /* obsolete name? */
#define IP_MTU_DISCOVER 10 /* int; see below */
#define IP_RECVERR 11 /* bool */
#define IP_RECVTTL 12 /* bool */
#define IP_RECVTOS 13 /* bool */
/* IP_MTU_DISCOVER arguments. */
#define IP_PMTUDISC_DONT 0 /* Never send DF frames. */
#define IP_PMTUDISC_WANT 1 /* Use per route hints. */
#define IP_PMTUDISC_DO 2 /* Always DF. */
/* To select the IP level. */
#define SOL_IP 0
#define IP_DEFAULT_MULTICAST_TTL 1
#define IP_DEFAULT_MULTICAST_LOOP 1
#define IP_MAX_MEMBERSHIPS 20
/* Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS.
The `ip_dst' field is used for the first-hop gateway when using a
source route (this gets put into the header proper). */
struct ip_opts
{
struct in_addr ip_dst; /* First hop; zero without source route. */
char ip_opts[40]; /* Actually variable in size. */
};
/* Structure used for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. */
struct ip_mreq
{
struct in_addr imr_multiaddr; /* IP multicast address of group */
struct in_addr imr_interface; /* local IP address of interface */
};
/* As above but including interface specification by index. */
struct ip_mreqn
{
struct in_addr imr_multiaddr; /* IP multicast address of group */
struct in_addr imr_address; /* local IP address of interface */
int imr_ifindex; /* Interface index */
};
/* Structure used for IP_PKTINFO. */
struct in_pktinfo
{
int ipi_ifindex; /* Interface index */
struct in_addr ipi_spec_dst; /* Routing destination address */
struct in_addr ipi_addr; /* Header destination address */
};
/* Options for use with `getsockopt' and `setsockopt' at the IPv6 level.
The first word in the comment at the right is the data type used;
"bool" means a boolean value stored in an `int'. */
#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 SCM_SRCRT IPV6_RXSRCRT
#define IPV6_NEXTHOP 9
#define IPV6_AUTHHDR 10
#define IPV6_UNICAST_HOPS 16
#define IPV6_MULTICAST_IF 17
#define IPV6_MULTICAST_HOPS 18
#define IPV6_MULTICAST_LOOP 19
#define IPV6_JOIN_GROUP 20
#define IPV6_LEAVE_GROUP 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_IPSEC_POLICY 34
#define IPV6_XFRM_POLICY 35
/* Obsolete synonyms for the above. */
#define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
#define IPV6_RXHOPOPTS IPV6_HOPOPTS
#define IPV6_RXDSTOPTS IPV6_DSTOPTS
/* IPV6_MTU_DISCOVER values. */
#define IPV6_PMTUDISC_DONT 0 /* Never send DF frames. */
#define IPV6_PMTUDISC_WANT 1 /* Use per route hints. */
#define IPV6_PMTUDISC_DO 2 /* Always DF. */
/* Socket level values for IPv6. */
#define SOL_IPV6 41
#define SOL_ICMPV6 58
/* Routing header options for IPv6. */
#define IPV6_RTHDR_LOOSE 0 /* Hop doesn't need to be neighbour. */
#define IPV6_RTHDR_STRICT 1 /* Hop must be a neighbour. */
#define IPV6_RTHDR_TYPE_0 0 /* IPv6 Routing header type 0. */
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