Update.
[glibc.git] / bits / in.h
blob83d7ae6b10bd0127a903981e3980b3f5b65c8cdd
1 /* Copyright (C) 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
19 /* Generic version. */
21 #ifndef _NETINET_IN_H
22 # error "Never use <bits/in.h> directly; include <netinet/in.h> instead."
23 #endif
25 /* Link numbers. */
26 #define IMPLINK_IP 155
27 #define IMPLINK_LOWEXPER 156
28 #define IMPLINK_HIGHEXPER 158
31 /* Options for use with `getsockopt' and `setsockopt' at the IP level.
32 The first word in the comment at the right is the data type used;
33 "bool" means a boolean value stored in an `int'. */
34 #define IP_OPTIONS 1 /* ip_opts; IP per-packet options. */
35 #define IP_HDRINCL 2 /* int; Header is included with data. */
36 #define IP_TOS 3 /* int; IP type of service and precedence. */
37 #define IP_TTL 4 /* int; IP time to live. */
38 #define IP_RECVOPTS 5 /* bool; Receive all IP options w/datagram. */
39 #define IP_RECVRETOPTS 6 /* bool; Receive IP options for response. */
40 #define IP_RECVDSTADDR 7 /* bool; Receive IP dst addr w/datagram. */
41 #define IP_RETOPTS 8 /* ip_opts; Set/get IP per-packet options. */
42 #define IP_MULTICAST_IF 9 /* in_addr; set/get IP multicast i/f */
43 #define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */
44 #define IP_MULTICAST_LOOP 11 /* i_char; set/get IP multicast loopback */
45 #define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */
46 #define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */
48 /* Structure used to describe IP options for IP_OPTIONS and IP_RETOPTS.
49 The `ip_dst' field is used for the first-hop gateway when using a
50 source route (this gets put into the header proper). */
51 struct ip_opts
53 struct in_addr ip_dst; /* First hop; zero without source route. */
54 char ip_opts[40]; /* Actually variable in size. */
57 /* Structure used for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. */
58 struct ip_mreq
60 struct in_addr imr_multiaddr; /* IP multicast address of group */
61 struct in_addr imr_interface; /* local IP address of interface */
64 /* IPV6 socket options. */
65 #define IPV6_ADDRFORM 1
66 #define IPV6_RXINFO 2
67 #define IPV6_RXHOPOPTS 3
68 #define IPV6_RXDSTOPTS 4
69 #define IPV6_RXSRCRT 5
70 #define IPV6_PKTOPTIONS 6
71 #define IPV6_CHECKSUM 7
72 #define IPV6_HOPLIMIT 8
74 #define IPV6_TXINFO IPV6_RXINFO
75 #define SCM_SRCINFO IPV6_TXINFO
76 #define SCM_SRCRT IPV6_RXSRCRT
78 #define IPV6_UNICAST_HOPS 16
79 #define IPV6_MULTICAST_IF 17
80 #define IPV6_MULTICAST_HOPS 18
81 #define IPV6_MULTICAST_LOOP 19
82 #define IPV6_ADD_MEMBERSHIP 20
83 #define IPV6_DROP_MEMBERSHIP 21