ip.h
资源名称:ixp425BSP.rar [点击查看]
上传用户:luoyougen
上传日期:2008-05-12
资源大小:23136k
文件大小:7k
源码类别:
VxWorks
开发平台:
C/C++
- /* ip.h - internet protocol header file */
- /* Copyright 1984-1996 Wind River Systems, Inc. */
- /*
- * Copyright (c) 1982, 1986, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)ip.h 8.2 (Berkeley) 6/1/94
- */
- /*
- modification history
- --------------------
- 02o,31aug00,rae added Router Alert Option (IPOPT_RA)
- 02n,15jul97,spm made IP checksum calculation configurable (SPR #7836)
- 02m,24feb97,bjl moved struct ipt_ta declatation outside of union
- ipt_timestamp to make struct ipt_ta globally visible for c++
- 01b,11apr97,rjc added min cost tos.
- 01a,03mar96,vin created from BSD4.4 stuff,integrated with 02l.
- Corrected bitfields according to the ansi spec.
- */
- #ifndef __INCiph
- #define __INCiph
- #ifdef __cplusplus
- extern "C" {
- #endif
- #include "vxWorks.h"
- /* Definitions for selecting IP checksum calculations (also see netLib.h). */
- #define IP_CKSUM_SEND_MASK 0x1
- #define IP_CKSUM_RECV_MASK 0x2
- #ifndef _BYTE_ORDER
- /*
- * Definitions for byte order,
- * according to byte significance from low address to high.
- */
- #define _LITTLE_ENDIAN 1234 /* least-significant byte first (vax) */
- #define _BIG_ENDIAN 4321 /* most-significant byte first (IBM, net) */
- #define _PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp) */
- #ifdef vax
- #define _BYTE_ORDER _LITTLE_ENDIAN
- #else
- #define _BYTE_ORDER _BIG_ENDIAN /* mc68000, tahoe, most others */
- #endif
- #endif /* _BYTE_ORDER */
- /*
- * Definitions for internet protocol version 4.
- * Per RFC 791, September 1981.
- */
- #define IPVERSION 4
- #if ((CPU_FAMILY==I960) && (defined __GNUC__))
- #pragma align 1 /* tell gcc960 not to optimize alignments */
- #endif /* CPU_FAMILY==I960 */
- /*
- * Structure of an internet header, naked of options.
- *
- * We declare ip_len and ip_off to be short, rather than u_short
- * pragmatically since otherwise unsigned comparisons can result
- * against negative integers quite easily, and fail in subtle ways.
- */
- struct ip {
- #if _BYTE_ORDER == _LITTLE_ENDIAN
- u_int ip_hl:4, /* header length */
- ip_v:4, /* version */
- #endif
- #if _BYTE_ORDER == _BIG_ENDIAN
- u_int ip_v:4, /* version */
- ip_hl:4, /* header length */
- #endif
- ip_tos:8, /* type of service */
- ip_len:16; /* total length */
- u_short ip_id; /* identification */
- short ip_off; /* fragment offset field */
- #define IP_DF 0x4000 /* dont fragment flag */
- #define IP_MF 0x2000 /* more fragments flag */
- #define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
- u_char ip_ttl; /* time to live */
- u_char ip_p; /* protocol */
- u_short ip_sum; /* checksum */
- struct in_addr ip_src,ip_dst; /* source and dest address */
- };
- #define IP_MAXPACKET 65535 /* maximum packet size */
- /*
- * Definitions for IP type of service (ip_tos)
- */
- #define IPTOS_LOWDELAY 0x10
- #define IPTOS_THROUGHPUT 0x08
- #define IPTOS_RELIABILITY 0x04
- #define IPTOS_MINCOST 0x02
- /*
- * Definitions for IP precedence (also in ip_tos) (hopefully unused)
- */
- #define IPTOS_PREC_NETCONTROL 0xe0
- #define IPTOS_PREC_INTERNETCONTROL 0xc0
- #define IPTOS_PREC_CRITIC_ECP 0xa0
- #define IPTOS_PREC_FLASHOVERRIDE 0x80
- #define IPTOS_PREC_FLASH 0x60
- #define IPTOS_PREC_IMMEDIATE 0x40
- #define IPTOS_PREC_PRIORITY 0x20
- #define IPTOS_PREC_ROUTINE 0x00
- /*
- * Definitions for options.
- */
- #define IPOPT_COPIED(o) ((o)&0x80)
- #define IPOPT_CLASS(o) ((o)&0x60)
- #define IPOPT_NUMBER(o) ((o)&0x1f)
- #define IPOPT_CONTROL 0x00
- #define IPOPT_RESERVED1 0x20
- #define IPOPT_DEBMEAS 0x40
- #define IPOPT_RESERVED2 0x60
- #define IPOPT_EOL 0 /* end of option list */
- #define IPOPT_NOP 1 /* no operation */
- #define IPOPT_RR 7 /* record packet route */
- #define IPOPT_TS 68 /* timestamp */
- #define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
- #define IPOPT_LSRR 131 /* loose source route */
- #define IPOPT_SATID 136 /* satnet id */
- #define IPOPT_SSRR 137 /* strict source route */
- #define IPOPT_RA 148 /* router alert */
- /*
- * Offsets to fields in options other than EOL and NOP.
- */
- #define IPOPT_OPTVAL 0 /* option ID */
- #define IPOPT_OLEN 1 /* option length */
- #define IPOPT_OFFSET 2 /* offset within option */
- #define IPOPT_MINOFF 4 /* min value of above */
- struct ipt_ta {
- struct in_addr ipt_addr;
- u_long ipt_time;
- };
- /*
- * Time stamp option structure.
- */
- struct ip_timestamp {
- u_int ipt_code:8, /* IPOPT_TS */
- ipt_len:8, /* size of structure (variable) */
- ipt_ptr:8, /* index of current entry */
- #if _BYTE_ORDER == _LITTLE_ENDIAN
- ipt_flg:4, /* flags, see below */
- ipt_oflw:4; /* overflow counter */
- #endif
- #if _BYTE_ORDER == _BIG_ENDIAN
- ipt_oflw:4, /* overflow counter */
- ipt_flg:4; /* flags, see below */
- #endif
- union ipt_timestamp {
- u_long ipt_time[1];
- struct ipt_ta ipt_ta[1];
- } ipt_timestamp;
- };
- #if ((CPU_FAMILY==I960) && (defined __GNUC__))
- #pragma align 0 /* turn off alignment requirement */
- #endif /* CPU_FAMILY==I960 */
- /* flag bits for ipt_flg */
- #define IPOPT_TS_TSONLY 0 /* timestamps only */
- #define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
- #define IPOPT_TS_PRESPEC 3 /* specified modules only */
- /* bits for security (not byte swapped) */
- #define IPOPT_SECUR_UNCLASS 0x0000
- #define IPOPT_SECUR_CONFID 0xf135
- #define IPOPT_SECUR_EFTO 0x789a
- #define IPOPT_SECUR_MMMM 0xbc4d
- #define IPOPT_SECUR_RESTR 0xaf13
- #define IPOPT_SECUR_SECRET 0xd788
- #define IPOPT_SECUR_TOPSECRET 0x6bc5
- /*
- * Internet implementation parameters.
- */
- #define MAXTTL 255 /* maximum time to live (seconds) */
- #define IPDEFTTL 64 /* default ttl, from RFC 1340 */
- #define IPFRAGTTL 60 /* time to live for frags, slowhz */
- #define IPTTLDEC 1 /* subtracted when forwarding */
- #define IP_MSS 576 /* default maximum segment size */
- #define IPFORWARDING 1 /* Set IP to always forward */
- #ifdef __cplusplus
- }
- #endif
- #endif /* __INCiph */