1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * Copyright (C) 1993-2001 by Darren Reed. 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * See the IPFILTER.LICENCE file for details on licencing. 5*0Sstevel@tonic-gate * 6*0Sstevel@tonic-gate * $Id: fill6bits.c,v 1.5 2002/03/27 15:09:57 darrenr Exp $ 7*0Sstevel@tonic-gate */ 8*0Sstevel@tonic-gate 9*0Sstevel@tonic-gate #include "ipf.h" 10*0Sstevel@tonic-gate 11*0Sstevel@tonic-gate fill6bits(bits,msk)12*0Sstevel@tonic-gatevoid fill6bits(bits, msk) 13*0Sstevel@tonic-gate int bits; 14*0Sstevel@tonic-gate u_int *msk; 15*0Sstevel@tonic-gate { 16*0Sstevel@tonic-gate if (bits == 0) { 17*0Sstevel@tonic-gate msk[0] = 0; 18*0Sstevel@tonic-gate msk[1] = 0; 19*0Sstevel@tonic-gate msk[2] = 0; 20*0Sstevel@tonic-gate msk[3] = 0; 21*0Sstevel@tonic-gate return; 22*0Sstevel@tonic-gate } 23*0Sstevel@tonic-gate 24*0Sstevel@tonic-gate msk[0] = 0xffffffff; 25*0Sstevel@tonic-gate msk[1] = 0xffffffff; 26*0Sstevel@tonic-gate msk[2] = 0xffffffff; 27*0Sstevel@tonic-gate msk[3] = 0xffffffff; 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate if (bits == 128) 30*0Sstevel@tonic-gate return; 31*0Sstevel@tonic-gate if (bits > 96) { 32*0Sstevel@tonic-gate msk[3] = htonl(msk[3] << (128 - bits)); 33*0Sstevel@tonic-gate } else if (bits > 64) { 34*0Sstevel@tonic-gate msk[3] = 0; 35*0Sstevel@tonic-gate msk[2] = htonl(msk[2] << (96 - bits)); 36*0Sstevel@tonic-gate } else if (bits > 32) { 37*0Sstevel@tonic-gate msk[3] = 0; 38*0Sstevel@tonic-gate msk[2] = 0; 39*0Sstevel@tonic-gate msk[1] = htonl(msk[1] << (64 - bits)); 40*0Sstevel@tonic-gate } else { 41*0Sstevel@tonic-gate msk[3] = 0; 42*0Sstevel@tonic-gate msk[2] = 0; 43*0Sstevel@tonic-gate msk[1] = 0; 44*0Sstevel@tonic-gate msk[0] = htonl(msk[0] << (32 - bits)); 45*0Sstevel@tonic-gate } 46*0Sstevel@tonic-gate } 47