The code in tcp_input() to disallow a socket from connecting to itself

[unix-history] / usr / src / sys / net / if_types.h

/*
 * Copyright (c) 1989, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *	@(#)if_types.h	8.1 (Berkeley) %G%
 */


/*
 * Interface types for benefit of parsing media address headers.
 * This list is derived from the SNMP list of ifTypes, currently
 * documented in RFC1123.
 */

#define IFT_OTHER	0x1		/* none of the following */
#define IFT_1822	0x2		/* old-style arpanet imp */
#define IFT_HDH1822	0x3		/* HDH arpanet imp */
#define IFT_X25DDN	0x4		/* x25 to imp */
#define IFT_X25		0x5		/* PDN X25 interface (RFC877) */
#define	IFT_ETHER	0x6		/* Ethernet CSMACD */
#define	IFT_ISO88023	0x7		/* CMSA CD */
#define	IFT_ISO88024	0x8		/* Token Bus */
#define	IFT_ISO88025	0x9		/* Token Ring */
#define	IFT_ISO88026	0xa		/* MAN */
#define	IFT_STARLAN	0xb
#define	IFT_P10		0xc		/* Proteon 10MBit ring */
#define	IFT_P80		0xd		/* Proteon 10MBit ring */
#define IFT_HY		0xe		/* Hyperchannel */
#define IFT_FDDI	0xf
#define IFT_LAPB	0x10
#define IFT_SDLC	0x11
#define IFT_T1		0x12
#define IFT_CEPT	0x13		/* E1 - european T1 */
#define IFT_ISDNBASIC	0x14
#define IFT_ISDNPRIMARY	0x15
#define IFT_PTPSERIAL	0x16		/* Proprietary PTP serial */
#define IFT_PPP		0x17		/* RFC 1331 */
#define	IFT_LOOP	0x18		/* loopback */
#define IFT_EON		0x19		/* ISO over IP */
#define	IFT_XETHER	0x1a		/* obsolete 3MB experimental ethernet */
#define	IFT_NSIP	0x1b		/* XNS over IP */
#define	IFT_SLIP	0x1c		/* IP over generic TTY */
#define	IFT_ULTRA	0x1d		/* Ultra Technologies */
#define	IFT_DS3		0x1e		/* Generic T3 */
#define	IFT_SIP		0x1f		/* SMDS */
#define	IFT_FRELAY	0x20		/* Frame Relay */
#define IFT_RS232	0x21		/* Used elsewhere by SNMP as index */