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net: core: let's use native isxdigit instead of custom 

In kernel we have fast and pretty implementation of the isxdigit() function.
Let's use it.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andy Shevchenko 2013-03-27 05:54:13 +00:00 committed by David S. Miller
parent 05fcaeac05
commit 5a048e3b59
1 changed files with 2 additions and 3 deletions
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5
net/core/utils.c
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@ -17,6 +17,7 @@
#include <linux/module.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/ctype.h>
#include <linux/inet.h>
#include <linux/mm.h>
#include <linux/net.h>
@ -348,9 +349,7 @@ int mac_pton(const char *s, u8 *mac)
/* Don't dirty result unless string is valid MAC. */
for (i = 0; i < ETH_ALEN; i++) {
if (!strchr("0123456789abcdefABCDEF", s[i * 3]))
return 0;
if (!strchr("0123456789abcdefABCDEF", s[i * 3 + 1]))
if (!isxdigit(s[i * 3]) || !isxdigit(s[i * 3 + 1]))
return 0;
if (i != ETH_ALEN - 1 && s[i * 3 + 2] != ':')
return 0;