/*

 * INET		An implementation of the TCP/IP protocol suite for the LINUX

 *		operating system.  INET is implemented using the  BSD Socket

 *		interface as the means of communication with the user level.

 *

 *		Definitions of the Internet Protocol.

 *

 * Version:	@(#)in.h	1.0.1	04/21/93

 *

 * Authors:	Original taken from the GNU Project <netinet/in.h> file.

 *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>

 *

 *		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_IN_H

#define _LINUX_IN_H

#include <linux/types.h>

#include <linux/libc-compat.h>

#include <linux/socket.h>

#if __UAPI_DEF_IN_IPPROTO

/* Standard well-defined IP protocols.  */

enum {

  IPPROTO_IP = 0,		/* Dummy protocol for TCP		*/

#define IPPROTO_IP		IPPROTO_IP

  IPPROTO_ICMP = 1,		/* Internet Control Message Protocol	*/

#define IPPROTO_ICMP		IPPROTO_ICMP

  IPPROTO_IGMP = 2,		/* Internet Group Management Protocol	*/

#define IPPROTO_IGMP		IPPROTO_IGMP

  IPPROTO_IPIP = 4,		/* IPIP tunnels (older KA9Q tunnels use 94) */

#define IPPROTO_IPIP		IPPROTO_IPIP

  IPPROTO_TCP = 6,		/* Transmission Control Protocol	*/

#define IPPROTO_TCP		IPPROTO_TCP

  IPPROTO_EGP = 8,		/* Exterior Gateway Protocol		*/

#define IPPROTO_EGP		IPPROTO_EGP

  IPPROTO_PUP = 12,		/* PUP protocol				*/

#define IPPROTO_PUP		IPPROTO_PUP

  IPPROTO_UDP = 17,		/* User Datagram Protocol		*/

#define IPPROTO_UDP		IPPROTO_UDP

  IPPROTO_IDP = 22,		/* XNS IDP protocol			*/

#define IPPROTO_IDP		IPPROTO_IDP

  IPPROTO_TP = 29,		/* SO Transport Protocol Class 4	*/

#define IPPROTO_TP		IPPROTO_TP

  IPPROTO_DCCP = 33,		/* Datagram Congestion Control Protocol */

#define IPPROTO_DCCP		IPPROTO_DCCP

  IPPROTO_IPV6 = 41,		/* IPv6-in-IPv4 tunnelling		*/

#define IPPROTO_IPV6		IPPROTO_IPV6

  IPPROTO_RSVP = 46,		/* RSVP Protocol			*/

#define IPPROTO_RSVP		IPPROTO_RSVP

  IPPROTO_GRE = 47,		/* Cisco GRE tunnels (rfc 1701,1702)	*/

#define IPPROTO_GRE		IPPROTO_GRE

  IPPROTO_ESP = 50,		/* Encapsulation Security Payload protocol */

#define IPPROTO_ESP		IPPROTO_ESP

  IPPROTO_AH = 51,		/* Authentication Header protocol	*/

#define IPPROTO_AH		IPPROTO_AH

  IPPROTO_MTP = 92,		/* Multicast Transport Protocol		*/

#define IPPROTO_MTP		IPPROTO_MTP

  IPPROTO_BEETPH = 94,		/* IP option pseudo header for BEET	*/

#define IPPROTO_BEETPH		IPPROTO_BEETPH

  IPPROTO_ENCAP = 98,		/* Encapsulation Header			*/

#define IPPROTO_ENCAP		IPPROTO_ENCAP

  IPPROTO_PIM = 103,		/* Protocol Independent Multicast	*/

#define IPPROTO_PIM		IPPROTO_PIM

  IPPROTO_COMP = 108,		/* Compression Header Protocol		*/

#define IPPROTO_COMP		IPPROTO_COMP

  IPPROTO_SCTP = 132,		/* Stream Control Transport Protocol	*/

#define IPPROTO_SCTP		IPPROTO_SCTP

  IPPROTO_UDPLITE = 136,	/* UDP-Lite (RFC 3828)			*/

#define IPPROTO_UDPLITE		IPPROTO_UDPLITE

  IPPROTO_MPLS = 137,		/* MPLS in IP (RFC 4023)		*/

#define IPPROTO_MPLS		IPPROTO_MPLS

  IPPROTO_RAW = 255,		/* Raw IP packets			*/

#define IPPROTO_RAW		IPPROTO_RAW

  IPPROTO_MAX

};

#endif

#if __UAPI_DEF_IN_ADDR

/* Internet address. */

struct in_addr {

	__be32	s_addr;

};

#endif

#define IP_TOS		1

#define IP_TTL		2

#define IP_HDRINCL	3

#define IP_OPTIONS	4

#define IP_ROUTER_ALERT	5

#define IP_RECVOPTS	6

#define IP_RETOPTS	7

#define IP_PKTINFO	8

#define IP_PKTOPTIONS	9

#define IP_MTU_DISCOVER	10

#define IP_RECVERR	11

#define IP_RECVTTL	12

#define	IP_RECVTOS	13

#define IP_MTU		14

#define IP_FREEBIND	15

#define IP_IPSEC_POLICY	16

#define IP_XFRM_POLICY	17

#define IP_PASSSEC	18

#define IP_TRANSPARENT	19

/* BSD compatibility */

#define IP_RECVRETOPTS	IP_RETOPTS

/* TProxy original addresses */

#define IP_ORIGDSTADDR       20

#define IP_RECVORIGDSTADDR   IP_ORIGDSTADDR

#define IP_MINTTL       21

#define IP_NODEFRAG     22

#define IP_CHECKSUM	23

#define IP_BIND_ADDRESS_NO_PORT	24

/* IP_MTU_DISCOVER values */

#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		*/

#define IP_PMTUDISC_PROBE		3       /* Ignore dst pmtu      */

/* Always use interface mtu (ignores dst pmtu) but don't set DF flag.

 * Also incoming ICMP frag_needed notifications will be ignored on

 * this socket to prevent accepting spoofed ones.

 */

#define IP_PMTUDISC_INTERFACE		4

/* weaker version of IP_PMTUDISC_INTERFACE, which allos packets to get

 * fragmented if they exeed the interface mtu

 */

#define IP_PMTUDISC_OMIT		5

#define IP_MULTICAST_IF			32

#define IP_MULTICAST_TTL 		33

#define IP_MULTICAST_LOOP 		34

#define IP_ADD_MEMBERSHIP		35

#define IP_DROP_MEMBERSHIP		36

#define IP_UNBLOCK_SOURCE		37

#define IP_BLOCK_SOURCE			38

#define IP_ADD_SOURCE_MEMBERSHIP	39

#define IP_DROP_SOURCE_MEMBERSHIP	40

#define IP_MSFILTER			41

#define MCAST_JOIN_GROUP		42

#define MCAST_BLOCK_SOURCE		43

#define MCAST_UNBLOCK_SOURCE		44

#define MCAST_LEAVE_GROUP		45

#define MCAST_JOIN_SOURCE_GROUP		46

#define MCAST_LEAVE_SOURCE_GROUP	47

#define MCAST_MSFILTER			48

#define IP_MULTICAST_ALL		49

#define IP_UNICAST_IF			50

#define MCAST_EXCLUDE	0

#define MCAST_INCLUDE	1

/* These need to appear somewhere around here */

#define IP_DEFAULT_MULTICAST_TTL        1

#define IP_DEFAULT_MULTICAST_LOOP       1

/* Request struct for multicast socket ops */

#if __UAPI_DEF_IP_MREQ

struct ip_mreq  {

	struct in_addr imr_multiaddr;	/* IP multicast address of group */

	struct in_addr imr_interface;	/* local IP address of interface */

};

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 */

};

struct ip_mreq_source {

	__be32		imr_multiaddr;

	__be32		imr_interface;

	__be32		imr_sourceaddr;

};

struct ip_msfilter {

	__be32		imsf_multiaddr;

	__be32		imsf_interface;

	__u32		imsf_fmode;

	__u32		imsf_numsrc;

	__be32		imsf_slist[1];

};

#define IP_MSFILTER_SIZE(numsrc) \

	(sizeof(struct ip_msfilter) - sizeof(__u32) \

	+ (numsrc) * sizeof(__u32))

struct group_req {

	__u32				 gr_interface;	/* interface index */

	struct __kernel_sockaddr_storage gr_group;	/* group address */

};

struct group_source_req {

	__u32				 gsr_interface;	/* interface index */

	struct __kernel_sockaddr_storage gsr_group;	/* group address */

	struct __kernel_sockaddr_storage gsr_source;	/* source address */

};

struct group_filter {

	__u32				 gf_interface;	/* interface index */

	struct __kernel_sockaddr_storage gf_group;	/* multicast address */

	__u32				 gf_fmode;	/* filter mode */

	__u32				 gf_numsrc;	/* number of sources */

	struct __kernel_sockaddr_storage gf_slist[1];	/* interface index */

};

#define GROUP_FILTER_SIZE(numsrc) \

	(sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \

	+ (numsrc) * sizeof(struct __kernel_sockaddr_storage))

#endif

#if __UAPI_DEF_IN_PKTINFO

struct in_pktinfo {

	int		ipi_ifindex;

	struct in_addr	ipi_spec_dst;

	struct in_addr	ipi_addr;

};

#endif

/* Structure describing an Internet (IP) socket address. */

#if  __UAPI_DEF_SOCKADDR_IN

#define __SOCK_SIZE__	16		/* sizeof(struct sockaddr)	*/

struct sockaddr_in {

  __kernel_sa_family_t	sin_family;	/* Address family		*/

  __be16		sin_port;	/* Port number			*/

  struct in_addr	sin_addr;	/* Internet address		*/

  /* Pad to size of `struct sockaddr'. */

  unsigned char		__pad[__SOCK_SIZE__ - sizeof(short int) -

			sizeof(unsigned short int) - sizeof(struct in_addr)];

};

#define sin_zero	__pad		/* for BSD UNIX comp. -FvK	*/

#endif

#if __UAPI_DEF_IN_CLASS

/*

 * Definitions of the bits in an Internet address integer.

 * On subnets, host and network parts are found according

 * to the subnet mask, not these masks.

 */

#define	IN_CLASSA(a)		((((long int) (a)) & 0x80000000) == 0)

#define	IN_CLASSA_NET		0xff000000

#define	IN_CLASSA_NSHIFT	24

#define	IN_CLASSA_HOST		(0xffffffff & ~IN_CLASSA_NET)

#define	IN_CLASSA_MAX		128

#define	IN_CLASSB(a)		((((long int) (a)) & 0xc0000000) == 0x80000000)

#define	IN_CLASSB_NET		0xffff0000

#define	IN_CLASSB_NSHIFT	16

#define	IN_CLASSB_HOST		(0xffffffff & ~IN_CLASSB_NET)

#define	IN_CLASSB_MAX		65536

#define	IN_CLASSC(a)		((((long int) (a)) & 0xe0000000) == 0xc0000000)

#define	IN_CLASSC_NET		0xffffff00

#define	IN_CLASSC_NSHIFT	8

#define	IN_CLASSC_HOST		(0xffffffff & ~IN_CLASSC_NET)

#define	IN_CLASSD(a)		((((long int) (a)) & 0xf0000000) == 0xe0000000)

#define	IN_MULTICAST(a)		IN_CLASSD(a)

#define IN_MULTICAST_NET	0xF0000000

#define	IN_EXPERIMENTAL(a)	((((long int) (a)) & 0xf0000000) == 0xf0000000)

#define	IN_BADCLASS(a)		IN_EXPERIMENTAL((a))

/* Address to accept any incoming messages. */

#define	INADDR_ANY		((unsigned long int) 0x00000000)

/* Address to send to all hosts. */

#define	INADDR_BROADCAST	((unsigned long int) 0xffffffff)

/* Address indicating an error return. */

#define	INADDR_NONE		((unsigned long int) 0xffffffff)

/* Network number for local host loopback. */

#define	IN_LOOPBACKNET		127

/* Address to loopback in software to local host.  */

#define	INADDR_LOOPBACK		0x7f000001	/* 127.0.0.1   */

#define	IN_LOOPBACK(a)		((((long int) (a)) & 0xff000000) == 0x7f000000)

/* Defines for Multicast INADDR */

#define INADDR_UNSPEC_GROUP   	0xe0000000U	/* 224.0.0.0   */

#define INADDR_ALLHOSTS_GROUP 	0xe0000001U	/* 224.0.0.1   */

#define INADDR_ALLRTRS_GROUP    0xe0000002U	/* 224.0.0.2 */

#define INADDR_MAX_LOCAL_GROUP  0xe00000ffU	/* 224.0.0.255 */

#endif

/* <asm/byteorder.h> contains the htonl type stuff.. */

#include <asm/byteorder.h> 

#endif /* _LINUX_IN_H */