Cregit: Linux 6.2: net

Contributors: 7
Author	Tokens	Token Proportion	Commits	Commit Proportion
Alexey Dobriyan	109	62.29%	1	9.09%
Andy Shevchenko	27	15.43%	3	27.27%
Linus Torvalds (pre-git)	22	12.57%	2	18.18%
Robert Olsson	6	3.43%	1	9.09%
Joe Perches	5	2.86%	1	9.09%
Arnaldo Carvalho de Melo	5	2.86%	2	18.18%
Greg Kroah-Hartman	1	0.57%	1	9.09%
Total	175		11

// SPDX-License-Identifier: GPL-2.0
#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)
{
	size_t maxlen = 3 * ETH_ALEN - 1;
	int i;

	/* XX:XX:XX:XX:XX:XX */
	if (strnlen(s, maxlen) < maxlen)
		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);

net_utils.c