1 /* 2 * Copyright (C) 1993-2001 by Darren Reed. 3 * 4 * See the IPFILTER.LICENCE file for details on licencing. 5 * 6 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 7 * Use is subject to license terms. 8 */ 9 10 #include "ipf.h" 11 12 void nat_setgroupmap(n) 13 ipnat_t *n; 14 { 15 if (n->in_outmsk == n->in_inmsk) 16 n->in_ippip = 1; 17 else if (n->in_flags & IPN_AUTOPORTMAP) { 18 n->in_ippip = ~ntohl(n->in_inmsk); 19 if (n->in_outmsk != 0xffffffff) 20 n->in_ippip /= (~ntohl(n->in_outmsk) + 1); 21 n->in_ippip++; 22 if (n->in_ippip == 0) 23 n->in_ippip = 1; 24 n->in_ppip = USABLE_PORTS / n->in_ippip; 25 } else { 26 n->in_space = USABLE_PORTS * ~ntohl(n->in_outmsk); 27 n->in_nip = 0; 28 if (!(n->in_ppip = n->in_pmin)) 29 n->in_ppip = 1; 30 n->in_ippip = USABLE_PORTS / n->in_ppip; 31 } 32 } 33