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| Source at commit 2862 created 7 years 25 days ago. By ifabio, Tag 2.3 release, bump svn to 2.4 | |
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| 1 | /*␊ |
| 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.␊ |
| 3 | *␊ |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@␊ |
| 5 | * ␊ |
| 6 | * This file contains Original Code and/or Modifications of Original Code␊ |
| 7 | * as defined in and that are subject to the Apple Public Source License␊ |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in␊ |
| 9 | * compliance with the License. The rights granted to you under the License␊ |
| 10 | * may not be used to create, or enable the creation or redistribution of,␊ |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to␊ |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any␊ |
| 13 | * terms of an Apple operating system software license agreement.␊ |
| 14 | * ␊ |
| 15 | * Please obtain a copy of the License at␊ |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file.␊ |
| 17 | * ␊ |
| 18 | * The Original Code and all software distributed under the License are␊ |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊ |
| 23 | * Please see the License for the specific language governing rights and␊ |
| 24 | * limitations under the License.␊ |
| 25 | * ␊ |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@␊ |
| 27 | */␊ |
| 28 | /*␊ |
| 29 | * Copyright (c) 1982, 1986, 1993, 1995␊ |
| 30 | *␉The Regents of the University of California. All rights reserved.␊ |
| 31 | *␊ |
| 32 | * Redistribution and use in source and binary forms, with or without␊ |
| 33 | * modification, are permitted provided that the following conditions␊ |
| 34 | * are met:␊ |
| 35 | * 1. Redistributions of source code must retain the above copyright␊ |
| 36 | * notice, this list of conditions and the following disclaimer.␊ |
| 37 | * 2. Redistributions in binary form must reproduce the above copyright␊ |
| 38 | * notice, this list of conditions and the following disclaimer in the␊ |
| 39 | * documentation and/or other materials provided with the distribution.␊ |
| 40 | * 3. All advertising materials mentioning features or use of this software␊ |
| 41 | * must display the following acknowledgement:␊ |
| 42 | *␉This product includes software developed by the University of␊ |
| 43 | *␉California, Berkeley and its contributors.␊ |
| 44 | * 4. Neither the name of the University nor the names of its contributors␊ |
| 45 | * may be used to endorse or promote products derived from this software␊ |
| 46 | * without specific prior written permission.␊ |
| 47 | *␊ |
| 48 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND␊ |
| 49 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE␊ |
| 50 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE␊ |
| 51 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE␊ |
| 52 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL␊ |
| 53 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS␊ |
| 54 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)␊ |
| 55 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT␊ |
| 56 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY␊ |
| 57 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF␊ |
| 58 | * SUCH DAMAGE.␊ |
| 59 | *␊ |
| 60 | *␉@(#)tcp_seq.h␉8.3 (Berkeley) 6/21/95␊ |
| 61 | * $FreeBSD: src/sys/netinet/tcp_seq.h,v 1.11.2.5 2001/08/22 00:59:12 silby Exp $␊ |
| 62 | */␊ |
| 63 | ␊ |
| 64 | #ifndef _NETINET_TCP_SEQ_H_␊ |
| 65 | #define _NETINET_TCP_SEQ_H_␊ |
| 66 | #include <sys/appleapiopts.h>␊ |
| 67 | /*␊ |
| 68 | * TCP sequence numbers are 32 bit integers operated␊ |
| 69 | * on with modular arithmetic. These macros can be␊ |
| 70 | * used to compare such integers.␊ |
| 71 | */␊ |
| 72 | #define␉SEQ_LT(a,b)␉((int)((a)-(b)) < 0)␊ |
| 73 | #define␉SEQ_LEQ(a,b)␉((int)((a)-(b)) <= 0)␊ |
| 74 | #define␉SEQ_GT(a,b)␉((int)((a)-(b)) > 0)␊ |
| 75 | #define␉SEQ_GEQ(a,b)␉((int)((a)-(b)) >= 0)␊ |
| 76 | ␊ |
| 77 | #define␉SEQ_MIN(a, b)␉((SEQ_LT(a, b)) ? (a) : (b))␊ |
| 78 | #define␉SEQ_MAX(a, b)␉((SEQ_GT(a, b)) ? (a) : (b))␊ |
| 79 | ␊ |
| 80 | /* for modulo comparisons of timestamps */␊ |
| 81 | #define TSTMP_LT(a,b)␉((int)((a)-(b)) < 0)␊ |
| 82 | #define TSTMP_GEQ(a,b)␉((int)((a)-(b)) >= 0)␊ |
| 83 | ␊ |
| 84 | /*␊ |
| 85 | * TCP connection counts are 32 bit integers operated␊ |
| 86 | * on with modular arithmetic. These macros can be␊ |
| 87 | * used to compare such integers.␊ |
| 88 | */␊ |
| 89 | #define␉CC_LT(a,b)␉((int)((a)-(b)) < 0)␊ |
| 90 | #define␉CC_LEQ(a,b)␉((int)((a)-(b)) <= 0)␊ |
| 91 | #define␉CC_GT(a,b)␉((int)((a)-(b)) > 0)␊ |
| 92 | #define␉CC_GEQ(a,b)␉((int)((a)-(b)) >= 0)␊ |
| 93 | ␊ |
| 94 | /* Macro to increment a CC: skip 0 which has a special meaning */␊ |
| 95 | #define CC_INC(c)␉(++(c) == 0 ? ++(c) : (c))␊ |
| 96 | ␊ |
| 97 | #endif /* _NETINET_TCP_SEQ_H_ */␊ |
| 98 | |
