[linux.git] / lib / net_utils.c

#include <linux/string.h>
#include <linux/if_ether.h>
#include <linux/ctype.h>
#include <linux/kernel.h>

bool mac_pton(const char *s, u8 *mac)
{
	int i;

	/* XX:XX:XX:XX:XX:XX */
	if (strlen(s) < 3 * ETH_ALEN - 1)
		return false;

	/* Don't dirty result unless string is valid MAC. */
	for (i = 0; i < ETH_ALEN; i++) {
		if (!isxdigit(s[i * 3]) || !isxdigit(s[i * 3 + 1]))
			return false;
		if (i != ETH_ALEN - 1 && s[i * 3 + 2] != ':')
			return false;
	}
	for (i = 0; i < ETH_ALEN; i++) {
		mac[i] = (hex_to_bin(s[i * 3]) << 4) | hex_to_bin(s[i * 3 + 1]);
	}
	return true;
}
EXPORT_SYMBOL(mac_pton);
Commit	Line	Data
4cd5773a AS	1	#include <linux/string.h>
	2	#include <linux/if_ether.h>
	3	#include <linux/ctype.h>
	4	#include <linux/kernel.h>
	5
a69f5edb	6	bool mac_pton(const char s, u8 mac)
4cd5773a AS	7	{
	8	int i;
	9
	10	/* XX:XX:XX:XX:XX:XX */
	11	if (strlen(s) < 3 * ETH_ALEN - 1)
a69f5edb	12	return false;
4cd5773a AS	13
	14	/* Don't dirty result unless string is valid MAC. */
	15	for (i = 0; i < ETH_ALEN; i++) {
	16	if (!isxdigit(s[i * 3]) \|\| !isxdigit(s[i * 3 + 1]))
a69f5edb	17	return false;
4cd5773a	18	if (i != ETH_ALEN - 1 && s[i * 3 + 2] != ':')
a69f5edb	19	return false;
4cd5773a AS	20	}
	21	for (i = 0; i < ETH_ALEN; i++) {
	22	mac[i] = (hex_to_bin(s[i * 3]) << 4) \| hex_to_bin(s[i * 3 + 1]);
	23	}
a69f5edb	24	return true;
4cd5773a AS	25	}
4cd5773a AS	26	EXPORT_SYMBOL(mac_pton);