net_utils.c 1.3 KB

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  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. #include <common.h>
  29. IPaddr_t string_to_ip(char *s)
  30. {
  31. IPaddr_t addr;
  32. char *e;
  33. int i;
  34. if (s == NULL)
  35. return(0);
  36. for (addr=0, i=0; i<4; ++i) {
  37. ulong val = s ? simple_strtoul(s, &e, 10) : 0;
  38. addr <<= 8;
  39. addr |= (val & 0xFF);
  40. if (s) {
  41. s = (*e) ? e+1 : e;
  42. }
  43. }
  44. return (htonl(addr));
  45. }