4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Copyright (c) 1982, 1986, 1993
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * The Regents of the University of California. All rights reserved.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Portions copyright (c) 1999, 2000
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Intel Corporation.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * All rights reserved.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Redistribution and use in source and binary forms, with or without
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * modification, are permitted provided that the following conditions
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 1. Redistributions of source code must retain the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * notice, this list of conditions and the following disclaimer.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 2. Redistributions in binary form must reproduce the above copyright
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * notice, this list of conditions and the following disclaimer in the
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * documentation and/or other materials provided with the distribution.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 3. All advertising materials mentioning features or use of this software
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * must display the following acknowledgement:
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * This product includes software developed by the University of
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * California, Berkeley, Intel Corporation, and its contributors.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * 4. Neither the name of University, Intel Corporation, or their respective
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * contributors may be used to endorse or promote products derived from
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * this software without specific prior written permission.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * THIS SOFTWARE IS PROVIDED BY THE REGENTS, INTEL CORPORATION AND
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * INTEL CORPORATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * @(#)ip.h 8.2 (Berkeley) 6/1/94
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * $Id: ip.h,v 1.1.1.1 2006/05/30 06:12:48 hhzhou Exp $
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Definitions for internet protocol version 4.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Per RFC 791, September 1981.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Structure of an internet header, naked of options.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync u_char ip_vhl; /* version << 4 | header length >> 2 */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* not _IP_VHL */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync struct in_addr ip_src,ip_dst; /* source and dest address */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IP_MAXPACKET 65535 /* maximum packet size */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Definitions for IP type of service (ip_tos)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Definitions for IP precedence (also in ip_tos) (hopefully unused)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Definitions for options.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Offsets to fields in options other than EOL and NOP.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Time stamp option structure.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* flag bits for ipt_flg */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IPOPT_TS_PRESPEC 3 /* specified modules only */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* bits for security (not byte swapped) */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync * Internet implementation parameters.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define MAXTTL 255 /* maximum time to live (seconds) */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IPFRAGTTL 60 /* time to live for frags, slowhz */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define IP_MSS 576 /* default maximum segment size */