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 * SPDX-License-Identifier: GPL-2.0+ 11 */ 12 13 #include <common.h> 14 15 struct in_addr string_to_ip(const char *s) 16 { 17 struct in_addr addr; 18 char *e; 19 int i; 20 21 addr.s_addr = 0; 22 if (s == NULL) 23 return addr; 24 25 for (addr.s_addr = 0, i = 0; i < 4; ++i) { 26 ulong val = s ? simple_strtoul(s, &e, 10) : 0; 27 if (val > 255) { 28 addr.s_addr = 0; 29 return addr; 30 } 31 if (i != 3 && *e != '.') { 32 addr.s_addr = 0; 33 return addr; 34 } 35 addr.s_addr <<= 8; 36 addr.s_addr |= (val & 0xFF); 37 if (s) { 38 s = (*e) ? e+1 : e; 39 } 40 } 41 42 addr.s_addr = htonl(addr.s_addr); 43 return addr; 44 } 45