2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
6 * Various kernel-resident INET utility functions; mainly
7 * for format conversion and debugging output.
9 * Version: $Id: utils.c,v 1.8 2000/10/03 07:29:01 anton Exp $
11 * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
14 * Alan Cox : verify_area check.
15 * Alan Cox : removed old debugging.
16 * Andi Kleen : add net_ratelimit()
18 * This program is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU General Public License
20 * as published by the Free Software Foundation; either version
21 * 2 of the License, or (at your option) any later version.
24 #include <asm/uaccess.h>
25 #include <asm/system.h>
26 #include <linux/types.h>
27 #include <linux/kernel.h>
28 #include <linux/sched.h>
29 #include <linux/string.h>
31 #include <linux/socket.h>
33 #include <linux/errno.h>
34 #include <linux/stat.h>
36 #include <linux/inet.h>
37 #include <linux/netdevice.h>
38 #include <linux/etherdevice.h>
40 #include <net/protocol.h>
42 #include <linux/skbuff.h>
46 * Display an IP address in readable format.
49 char *in_ntoa(__u32 in
)
55 sprintf(buff
, "%d.%d.%d.%d",
56 (p
[0] & 255), (p
[1] & 255), (p
[2] & 255), (p
[3] & 255));
61 * Convert an ASCII string to binary IP.
64 __u32
in_aton(const char *str
)
71 for (i
= 0; i
< 4; i
++)
77 while (*str
!= '\0' && *str
!= '.')