+
+static size_t _format_mac_addr(char *buf, int buflen,
+ const unsigned char *addr, int len)
+{
+ int i;
+ char *cp = buf;
+
+ for (i = 0; i < len; i++) {
+ cp += scnprintf(cp, buflen - (cp - buf), "%02x", addr[i]);
+ if (i == len - 1)
+ break;
+ cp += strlcpy(cp, ":", buflen - (cp - buf));
+ }
+ return cp - buf;
+}
+
+ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len)
+{
+ size_t l;
+
+ l = _format_mac_addr(buf, PAGE_SIZE, addr, len);
+ l += strlcpy(buf + l, "\n", PAGE_SIZE - l);
+ return ((ssize_t) l);
+}
+EXPORT_SYMBOL(sysfs_format_mac);