lib/net_utils.c

   1 /*
   2  * Generic network code. Moved from net.c
   3  *
   4  * Copyright 1994 - 2000 Neil Russell.
   5  * Copyright 2000 Roland Borde
   6  * Copyright 2000 Paolo Scaffardi
   7  * Copyright 2000-2002 Wolfgang Denk, wd@denx.de
   8  * Copyright 2009 Dirk Behme, dirk.behme@googlemail.com
   9  *
  10  * See file CREDITS for list of people who contributed to this
  11  * project.
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License as
  15  * published by the Free Software Foundation; either version 2 of
  16  * the License, or (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  26  * MA 02111-1307 USA
  27  */
  28
  29 #include <common.h>
  30
  31 IPaddr_t string_to_ip(char *s)
  32 {
  33         IPaddr_t addr;
  34         char *e;
  35         int i;
  36
  37         if (s == NULL)
  38                 return(0);
  39
  40         for (addr=0, i=0; i<4; ++i) {
  41                 ulong val = s ? simple_strtoul(s, &e, 10) : 0;
  42                 addr <<= 8;
  43                 addr |= (val & 0xFF);
  44                 if (s) {
  45                         s = (*e) ? e+1 : e;
  46                 }
  47         }
  48
  49         return (htonl(addr));
  50 }