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authorAndy Shevchenko <andy.shevchenko@gmail.com>2013-06-04 20:46:26 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-06-05 23:00:27 +0400
commit4cd5773a2ae6facdde3f563087a4cc50f00d9530 (patch)
treef473e0a20e69f056394d3b268bfb4256cedff4ed /lib/net_utils.c
parent143e9c76c487957de89808cf2a3c828518ad131b (diff)
downloadlinux-4cd5773a2ae6facdde3f563087a4cc50f00d9530.tar.xz
net: core: move mac_pton() to lib/net_utils.c
Since we have at least one user of this function outside of CONFIG_NET scope, we have to provide this function independently. The proposed solution is to move it under lib/net_utils.c with corresponding configuration variable and select wherever it is needed. Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reported-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/net_utils.c')
-rw-r--r--lib/net_utils.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/lib/net_utils.c b/lib/net_utils.c
new file mode 100644
index 000000000000..2e3c52c8d050
--- /dev/null
+++ b/lib/net_utils.c
@@ -0,0 +1,26 @@
+#include <linux/string.h>
+#include <linux/if_ether.h>
+#include <linux/ctype.h>
+#include <linux/kernel.h>
+
+int mac_pton(const char *s, u8 *mac)
+{
+ int i;
+
+ /* XX:XX:XX:XX:XX:XX */
+ if (strlen(s) < 3 * ETH_ALEN - 1)
+ return 0;
+
+ /* 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;
+ if (i != ETH_ALEN - 1 && s[i * 3 + 2] != ':')
+ return 0;
+ }
+ 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;
+}
+EXPORT_SYMBOL(mac_pton);