[glibc.git] / bits / in.h

/* Copyright (C) 1997, 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.  */

/* Generic version.  */

#ifndef _NETINET_IN_H
# error "Never use <bits/in.h> directly; include <netinet/in.h> instead."
#endif

/* Link numbers.  */
#define	IMPLINK_IP		155
#define	IMPLINK_LOWEXPER	156
#define	IMPLINK_HIGHEXPER	158


/* 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	1	/* ip_opts; IP per-packet options.  */
#define	IP_HDRINCL	2	/* int; Header is included with data.  */
#define	IP_TOS		3	/* int; IP type of service and precedence.  */
#define	IP_TTL		4	/* int; IP time to live.  */
#define	IP_RECVOPTS	5	/* bool; Receive all IP options w/datagram.  */
#define	IP_RECVRETOPTS	6	/* bool; Receive IP options for response.  */
#define	IP_RECVDSTADDR	7	/* bool; Receive IP dst addr w/datagram.  */
#define	IP_RETOPTS	8	/* ip_opts; Set/get IP per-packet options.  */
#define IP_MULTICAST_IF 9	/* in_addr; set/get IP multicast i/f */
#define IP_MULTICAST_TTL 10	/* u_char; set/get IP multicast ttl */
#define IP_MULTICAST_LOOP 11	/* i_char; set/get IP multicast loopback */
#define IP_ADD_MEMBERSHIP 12	/* ip_mreq; add an IP group membership */
#define IP_DROP_MEMBERSHIP 13	/* ip_mreq; drop an IP group membership */

/* 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 */
  };

/* IPV6 socket options.  */
#define IPV6_ADDRFORM		1
#define IPV6_RXINFO		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_TXINFO		IPV6_RXINFO
#define SCM_SRCINFO		IPV6_TXINFO
#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_JOIN_GROUP		20
#define IPV6_LEAVE_GROUP	21

/* 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

/* 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.  */
Commit	Line	Data
bfaf0bbb	1	/* Copyright (C) 1997, 2000 Free Software Foundation, Inc.
0501d603 UD	2	This file is part of the GNU C Library.
0501d603 UD	3
478b92f0	4	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	5	modify it under the terms of the GNU Lesser General Public
	6	License as published by the Free Software Foundation; either
	7	version 2.1 of the License, or (at your option) any later version.
0501d603 UD	8
	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
478b92f0	11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	12	Lesser General Public License for more details.
0501d603	13
41bdb6e2 AJ	14	You should have received a copy of the GNU Lesser General Public
	15	License along with the GNU C Library; if not, write to the Free
	16	Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	17	02111-1307 USA. */
0501d603 UD	18
	19	/* Generic version. */
	20
f4017d20 UD	21	#ifndef _NETINET_IN_H
	22	# error "Never use <bits/in.h> directly; include <netinet/in.h> instead."
	23	#endif
0501d603 UD	24
	25	/* Link numbers. */
	26	#define IMPLINK_IP 155
	27	#define IMPLINK_LOWEXPER 156
	28	#define IMPLINK_HIGHEXPER 158
	29
	30
	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 */
	47
	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
	52	{
	53	struct in_addr ip_dst; /* First hop; zero without source route. */
	54	char ip_opts[40]; /* Actually variable in size. */
	55	};
	56
	57	/* Structure used for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. */
	58	struct ip_mreq
f4017d20 UD	59	{
	60	struct in_addr imr_multiaddr; /* IP multicast address of group */
	61	struct in_addr imr_interface; /* local IP address of interface */
	62	};
0501d603 UD	63
	64	/* IPV6 socket options. */
	65	#define IPV6_ADDRFORM 1
	66	#define IPV6_RXINFO 2
5a81730f UD	67	#define IPV6_HOPOPTS 3
5a81730f UD	68	#define IPV6_DSTOPTS 4
bfaf0bbb	69	#define IPV6_RTHDR 5
0501d603 UD	70	#define IPV6_PKTOPTIONS 6
	71	#define IPV6_CHECKSUM 7
	72	#define IPV6_HOPLIMIT 8
	73
	74	#define IPV6_TXINFO IPV6_RXINFO
	75	#define SCM_SRCINFO IPV6_TXINFO
	76	#define SCM_SRCRT IPV6_RXSRCRT
	77
	78	#define IPV6_UNICAST_HOPS 16
	79	#define IPV6_MULTICAST_IF 17
	80	#define IPV6_MULTICAST_HOPS 18
	81	#define IPV6_MULTICAST_LOOP 19
e7c036b3 UD	82	#define IPV6_JOIN_GROUP 20
	83	#define IPV6_LEAVE_GROUP 21
	84
	85	/* Obsolete synonyms for the above. */
	86	#define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
	87	#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
5a81730f UD	88	#define IPV6_RXHOPOPTS IPV6_HOPOPTS
5a81730f UD	89	#define IPV6_RXDSTOPTS IPV6_DSTOPTS
bfaf0bbb UD	90
	91	/* Routing header options for IPv6. */
	92	#define IPV6_RTHDR_LOOSE 0 /* Hop doesn't need to be neighbour. */
	93	#define IPV6_RTHDR_STRICT 1 /* Hop must be a neighbour. */
	94
	95	#define IPV6_RTHDR_TYPE_0 0 /* IPv6 Routing header type 0. */