tcp_seq.h
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上传日期:2008-05-12
资源大小:23136k
文件大小:3k
源码类别:
VxWorks
开发平台:
C/C++
- /* tcp_seq.h - tcp sequence header file */
- /* Copyright 1984 - 2001 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.
- *
- * @(#)tcp_seq.h 8.3 (Berkeley) 6/21/95
- */
- /*
- modification history
- --------------------
- 01c,30mar01,spm merged changes from version 01c of tor2_0.open_stack
- branch (wpwr VOB, base 01b) for unified code base
- 01b,08jul97,vin changed TCP_ISSINCR to a default value as in FreeBSD-2.2.1
- 01a,03mar96,vin created from BSD4.4 stuff.
- */
- #ifndef __INCtcp_seqh
- #define __INCtcp_seqh
- #ifdef __cplusplus
- extern "C" {
- #endif
- /*
- * TCP sequence numbers are 32 bit integers operated
- * on with modular arithmetic. These macros can be
- * used to compare such integers.
- */
- #define SEQ_LT(a,b) ((int)((a)-(b)) < 0)
- #define SEQ_LEQ(a,b) ((int)((a)-(b)) <= 0)
- #define SEQ_GT(a,b) ((int)((a)-(b)) > 0)
- #define SEQ_GEQ(a,b) ((int)((a)-(b)) >= 0)
- /*
- * Macros to initialize tcp sequence numbers for
- * send and receive from initial send and receive
- * sequence numbers.
- */
- #define tcp_rcvseqinit(tp)
- (tp)->rcv_adv = (tp)->rcv_nxt = (tp)->irs + 1
- #define tcp_sendseqinit(tp)
- (tp)->snd_una = (tp)->snd_nxt = (tp)->snd_max = (tp)->snd_up =
- (tp)->iss
- #define TCP_ISSINCR (250*1024) /* increment for tcp_iss each second */
- #ifndef VIRTUAL_STACK
- IMPORT tcp_seq tcp_iss; /* tcp initial send seq # */
- #endif
- #ifdef __cplusplus
- }
- #endif
- #endif /* __INCtcp_seqh */