diff options
Diffstat (limited to 'lib/net_utils.c')
| -rw-r--r-- | lib/net_utils.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/lib/net_utils.c b/lib/net_utils.c index 2e3c52c8d050..215cda672fee 100644 --- a/lib/net_utils.c +++ b/lib/net_utils.c @@ -1,26 +1,27 @@ +// SPDX-License-Identifier: GPL-2.0 #include <linux/string.h> #include <linux/if_ether.h> #include <linux/ctype.h> -#include <linux/kernel.h> +#include <linux/export.h> +#include <linux/hex.h> -int mac_pton(const char *s, u8 *mac) +bool mac_pton(const char *s, u8 *mac) { int i; - /* XX:XX:XX:XX:XX:XX */ - if (strlen(s) < 3 * ETH_ALEN - 1) - return 0; + if (strnlen(s, MAC_ADDR_STR_LEN) < MAC_ADDR_STR_LEN) + 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 0; + return false; if (i != ETH_ALEN - 1 && s[i * 3 + 2] != ':') - return 0; + 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 1; + return true; } EXPORT_SYMBOL(mac_pton); |