netmatch.c,v

来自「TCP-IP红宝书源代码」· C,V 代码 · 共 49 行

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date	97.09.21.19.27.59;	author dls;	state Dist;
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@/* netmatch.c - netmatch */

#include <conf.h>
#include <kernel.h>
#include <network.h>

/*------------------------------------------------------------------------
 *  netmatch  -  Is "dst" on "net"?
 *------------------------------------------------------------------------
 */
Bool netmatch(dst, net, mask, islocal)
IPaddr	dst, net, mask;
Bool	islocal;
{
	if ((dst & mask) != (net & mask))
		return FALSE;
	/*
	 * local srcs should only match unicast addresses (host routes)
	 */
	if (islocal)
		if (isbrc(dst) || IP_CLASSD(dst))
			return mask != ip_maskall;
	return TRUE;
}
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