| in_cksum.h (134300) | in_cksum.h (143063) |
|---|---|
| 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 15 unchanged lines hidden (view full) --- 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * from tahoe: in_cksum.c 1.2 86/01/05 30 * from: @(#)in_cksum.c 1.3 (Berkeley) 1/19/91 31 * from: Id: in_cksum.c,v 1.8 1995/12/03 18:35:19 bde Exp | 1/*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 15 unchanged lines hidden (view full) --- 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * from tahoe: in_cksum.c 1.2 86/01/05 30 * from: @(#)in_cksum.c 1.3 (Berkeley) 1/19/91 31 * from: Id: in_cksum.c,v 1.8 1995/12/03 18:35:19 bde Exp |
| 32 * $FreeBSD: head/sys/i386/include/in_cksum.h 134300 2004-08-25 18:28:15Z obrien $ | 32 * $FreeBSD: head/sys/i386/include/in_cksum.h 143063 2005-03-02 21:33:29Z joerg $ |
| 33 */ 34 35#ifndef _MACHINE_IN_CKSUM_H_ 36#define _MACHINE_IN_CKSUM_H_ 1 37 | 33 */ 34 35#ifndef _MACHINE_IN_CKSUM_H_ 36#define _MACHINE_IN_CKSUM_H_ 1 37 |
| 38#ifndef _SYS_CDEFS_H_ 39#error this file needs sys/cdefs.h as a prerequisite 40#endif 41 |
|
| 38/* 39 * MP safe (alfred) 40 */ 41 42#include <sys/cdefs.h> 43 44#define in_cksum(m, len) in_cksum_skip(m, len, 0) 45 46/* 47 * It it useful to have an Internet checksum routine which is inlineable 48 * and optimized specifically for the task of computing IP header checksums 49 * in the normal case (where there are no options and the header length is 50 * therefore always exactly five 32-bit words. 51 */ | 42/* 43 * MP safe (alfred) 44 */ 45 46#include <sys/cdefs.h> 47 48#define in_cksum(m, len) in_cksum_skip(m, len, 0) 49 50/* 51 * It it useful to have an Internet checksum routine which is inlineable 52 * and optimized specifically for the task of computing IP header checksums 53 * in the normal case (where there are no options and the header length is 54 * therefore always exactly five 32-bit words. 55 */ |
| 52#if defined(__GNUC__) && !defined(__INTEL_COMPILER) | 56#if defined(__GNUCLIKE_ASM) && !defined(__INTEL_COMPILER) |
| 53static __inline u_int 54in_cksum_hdr(const struct ip *ip) 55{ 56 register u_int sum = 0; 57 58 __asm __volatile ( 59 "addl %1, %0\n" 60 "adcl %2, %0\n" --- 53 unchanged lines hidden (view full) --- 114 int __tmpsum; \ 115 __tmpsum = (int)ntohs(ip->ip_sum) + 256; \ 116 ip->ip_sum = htons(__tmpsum + (__tmpsum >> 16)); \ 117 } while(0) 118 119#endif 120 121#ifdef _KERNEL | 57static __inline u_int 58in_cksum_hdr(const struct ip *ip) 59{ 60 register u_int sum = 0; 61 62 __asm __volatile ( 63 "addl %1, %0\n" 64 "adcl %2, %0\n" --- 53 unchanged lines hidden (view full) --- 118 int __tmpsum; \ 119 __tmpsum = (int)ntohs(ip->ip_sum) + 256; \ 120 ip->ip_sum = htons(__tmpsum + (__tmpsum >> 16)); \ 121 } while(0) 122 123#endif 124 125#ifdef _KERNEL |
| 122#if !defined(__GNUC__) || defined(__INTEL_COMPILER) | 126#if !defined(__GNUCLIKE_ASM) || defined(__INTEL_COMPILER) |
| 123u_int in_cksum_hdr(const struct ip *ip); 124u_short in_addword(u_short sum, u_short b); 125u_short in_pseudo(u_int sum, u_int b, u_int c); 126#endif 127u_short in_cksum_skip(struct mbuf *m, int len, int skip); 128#endif /* _KERNEL */ 129 130#endif /* _MACHINE_IN_CKSUM_H_ */ | 127u_int in_cksum_hdr(const struct ip *ip); 128u_short in_addword(u_short sum, u_short b); 129u_short in_pseudo(u_int sum, u_int b, u_int c); 130#endif 131u_short in_cksum_skip(struct mbuf *m, int len, int skip); 132#endif /* _KERNEL */ 133 134#endif /* _MACHINE_IN_CKSUM_H_ */ |