change iso_pcbconnect so that specifying a null nsap as target

[unix-history] / usr / src / sys / netiso / iso_addrs.c

/***********************************************************
		Copyright IBM Corporation 1987

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******************************************************************/

/*
 * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
 */

iso_maskmatch(sisoa, sisob, smask)
	struct sockaddr_iso	*sisoa, *sisob, smask;
{
	caddr_t a, b, c;
	int compare_len;

	if ( smask ) {
		compare_len = smask->isoa_len;
	} else if ((compare_len = isoaa->isoa_len) != isoab->isoa_len)
		return 0;

	return masked_cmp(&sisoa->siso_addr, &sisob->siso_addr, 
		&smask->siso_addr, compare_len);
}

int masked_cmp( a, b, c, len)
	register caddr_t a, b, c;
	int len;
{
	caddr_t ax=a, bx=b, cx=c;
	register int i;

	for( i=0; i< len; i++) {
		if( (*a)&(*c) != (*b)&(*c) )
			break;
		a++;
		b++;
		c++;
	}
	return (int) i;
}