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/* $FreeBSD$ */
/*
* Copyright (C) 2012 by Darren Reed.
*
* See the IPFILTER.LICENCE file for details on licencing.
*
* $Id$
*/
#include "ipf.h"
int ntomask(family, nbits, ap)
int family, nbits;
u_32_t *ap;
{
u_32_t mask;
if (nbits < 0)
return -1;
switch (family)
{
case AF_INET :
if (nbits > 32 || use_inet6 == 1)
return -1;
if (nbits == 0) {
mask = 0;
} else {
mask = 0xffffffff;
mask <<= (32 - nbits);
}
*ap = htonl(mask);
break;
case 0 :
case AF_INET6 :
if ((nbits > 128) || (use_inet6 == -1))
return -1;
fill6bits(nbits, ap);
break;
default :
return -1;
}
return 0;
}
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