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jcastillo |
/*
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* INET An implementation of the TCP/IP protocol suite for the LINUX
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* operating system. INET is implemented using the BSD Socket
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* interface as the means of communication with the user level.
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*
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* Definitions of the Internet Protocol.
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*
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* Version: @(#)in.h 1.0.1 04/21/93
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*
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* Authors: Original taken from the GNU Project <netinet/in.h> file.
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* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _LINUX_IN_H
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#define _LINUX_IN_H
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#include <linux/types.h>
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/* Standard well-defined IP protocols. */
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enum {
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IPPROTO_IP = 0, /* Dummy protocol for TCP */
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IPPROTO_ICMP = 1, /* Internet Control Message Protocol */
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IPPROTO_IGMP = 2, /* Internet Group Management Protocol */
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IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94) */
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IPPROTO_TCP = 6, /* Transmission Control Protocol */
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IPPROTO_EGP = 8, /* Exterior Gateway Protocol */
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IPPROTO_PUP = 12, /* PUP protocol */
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IPPROTO_UDP = 17, /* User Datagram Protocol */
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IPPROTO_IDP = 22, /* XNS IDP protocol */
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IPPROTO_GRE = 47, /* GRE Encapsulation used by PPTP et al */
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IPPROTO_ESP = 50, /* ESP protocol for IPSec */
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IPPROTO_AH = 51, /* AH protocol for IPSec */
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IPPROTO_RAW = 255, /* Raw IP packets */
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IPPROTO_MAX
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};
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/* Internet address. */
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struct in_addr {
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__u32 s_addr;
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};
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/* Request struct for multicast socket ops */
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struct ip_mreq
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{
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struct in_addr imr_multiaddr; /* IP multicast address of group */
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struct in_addr imr_interface; /* local IP address of interface */
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};
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/* Structure describing an Internet (IP) socket address. */
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#define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */
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struct sockaddr_in {
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short int sin_family; /* Address family */
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unsigned short int sin_port; /* Port number */
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struct in_addr sin_addr; /* Internet address */
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/* Pad to size of `struct sockaddr'. */
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unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) -
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sizeof(unsigned short int) - sizeof(struct in_addr)];
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};
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#define sin_zero __pad /* for BSD UNIX comp. -FvK */
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/*
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* Definitions of the bits in an Internet address integer.
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* On subnets, host and network parts are found according
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* to the subnet mask, not these masks.
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*/
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#define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0)
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#define IN_CLASSA_NET 0xff000000
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#define IN_CLASSA_NSHIFT 24
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#define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
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#define IN_CLASSA_MAX 128
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#define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000)
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#define IN_CLASSB_NET 0xffff0000
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#define IN_CLASSB_NSHIFT 16
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#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
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#define IN_CLASSB_MAX 65536
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#define IN_CLASSC(a) ((((long int) (a)) & 0xe0000000) == 0xc0000000)
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#define IN_CLASSC_NET 0xffffff00
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#define IN_CLASSC_NSHIFT 8
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#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
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#define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000)
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#define IN_MULTICAST(a) IN_CLASSD(a)
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#define IN_MULTICAST_NET 0xF0000000
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#define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xe0000000) == 0xe0000000)
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#define IN_BADCLASS(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000)
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/* Address to accept any incoming messages. */
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#define INADDR_ANY ((unsigned long int) 0x00000000)
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/* Address to send to all hosts. */
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#define INADDR_BROADCAST ((unsigned long int) 0xffffffff)
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/* Address indicating an error return. */
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#define INADDR_NONE ((unsigned long int) 0xffffffff)
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/* Network number for local host loopback. */
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#define IN_LOOPBACKNET 127
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/* Address to loopback in software to local host. */
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#define INADDR_LOOPBACK 0x7f000001 /* 127.0.0.1 */
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#define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000)
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/* Defines for Multicast INADDR */
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#define INADDR_UNSPEC_GROUP 0xe0000000 /* 224.0.0.0 */
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#define INADDR_ALLHOSTS_GROUP 0xe0000001 /* 224.0.0.1 */
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#define INADDR_MAX_LOCAL_GROUP 0xe00000ff /* 224.0.0.255 */
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/* <asm/byteorder.h> contains the htonl type stuff.. */
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#include <asm/byteorder.h>
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/* Some random defines to make it easier in the kernel.. */
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#ifdef __KERNEL__
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#define LOOPBACK(x) (((x) & htonl(0xff000000)) == htonl(0x7f000000))
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#define MULTICAST(x) (((x) & htonl(0xf0000000)) == htonl(0xe0000000))
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#endif
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/*
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* IPv6 definitions as we start to include them. This is just
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* a beginning -- don't get excited 8)
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*/
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struct in_addr6
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{
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unsigned char s6_addr[16];
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};
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struct sockaddr_in6
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{
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unsigned short sin6_family;
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unsigned short sin6_port;
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unsigned long sin6_flowinfo;
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struct in_addr6 sin6_addr;
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};
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#endif /* _LINUX_IN_H */
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