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a69f5edb8b
Use bool instead of int as the return type. All uses are tested with !. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
27 lines
604 B
C
27 lines
604 B
C
#include <linux/string.h>
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#include <linux/if_ether.h>
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#include <linux/ctype.h>
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#include <linux/kernel.h>
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bool mac_pton(const char *s, u8 *mac)
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{
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int i;
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/* XX:XX:XX:XX:XX:XX */
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if (strlen(s) < 3 * ETH_ALEN - 1)
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return false;
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/* Don't dirty result unless string is valid MAC. */
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for (i = 0; i < ETH_ALEN; i++) {
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if (!isxdigit(s[i * 3]) || !isxdigit(s[i * 3 + 1]))
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return false;
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if (i != ETH_ALEN - 1 && s[i * 3 + 2] != ':')
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return false;
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}
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for (i = 0; i < ETH_ALEN; i++) {
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mac[i] = (hex_to_bin(s[i * 3]) << 4) | hex_to_bin(s[i * 3 + 1]);
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}
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return true;
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}
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EXPORT_SYMBOL(mac_pton);
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