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/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. 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_TOS 1 /* int; IP type of service and precedence. */
#define IP_TTL 2 /* int; IP time to live. */
#define IP_HDRINCL 3 /* int; Header is included with data. */
#define IP_OPTIONS 4 /* ip_opts; 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 */
/* To select the IP level. */
#define SOL_IP 0
/* Structure used to describe IP options for IP_OPTIONS. 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 */
};
/* IPV6 socket options. */
#define IPV6_ADDRFORM 1
#define IPV6_PKTINFO 2
#define IPV6_RXHOPOPTS 3 /* obsolete name */
#define IPV6_RXDSTOPTS 4 /* obsolete name */
#define IPV6_HOPOPTS IPV6_RXHOPOPTS /* new name */
#define IPV6_DSTOPTS IPV6_RXDSTOPTS /* new name */
#define IPV6_RXSRCRT 5
#define IPV6_PKTOPTIONS 6
#define IPV6_CHECKSUM 7
#define IPV6_HOPLIMIT 8
#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
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