cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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net_utils.c (640B)

      1// SPDX-License-Identifier: GPL-2.0
      2#include <linux/string.h>
      3#include <linux/if_ether.h>
      4#include <linux/ctype.h>
      5#include <linux/kernel.h>
      6
      7bool mac_pton(const char *s, u8 *mac)
      8{
      9	int i;
     10
     11	/* XX:XX:XX:XX:XX:XX */
     12	if (strlen(s) < 3 * ETH_ALEN - 1)
     13		return false;
     14
     15	/* Don't dirty result unless string is valid MAC. */
     16	for (i = 0; i < ETH_ALEN; i++) {
     17		if (!isxdigit(s[i * 3]) || !isxdigit(s[i * 3 + 1]))
     18			return false;
     19		if (i != ETH_ALEN - 1 && s[i * 3 + 2] != ':')
     20			return false;
     21	}
     22	for (i = 0; i < ETH_ALEN; i++) {
     23		mac[i] = (hex_to_bin(s[i * 3]) << 4) | hex_to_bin(s[i * 3 + 1]);
     24	}
     25	return true;
     26}
     27EXPORT_SYMBOL(mac_pton);