Revision 598a0c7d0932e385486b173768f03d95bf5507c8 authored by Linus Torvalds on 19 September 2014, 17:31:36 UTC, committed by Linus Torvalds on 19 September 2014, 17:31:36 UTC
Pull perf fixes from Ingo Molnar: "Two kernel side fixes: a kprobes fix and a perf_remove_from_context() fix (which does not yet fix the migration bug which is WIP)" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf: Fix a race condition in perf_remove_from_context() kprobes/x86: Free 'optinsn' cache when range check fails
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);
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