Since generating a random ethernet address needs to be done
in several drivers, add a random_ether_addr function to etherdevice.h
diff -Nru a/include/linux/etherdevice.h b/include/linux/etherdevice.h
--- a/include/linux/etherdevice.h Fri Apr 9 11:33:59 2004
+++ b/include/linux/etherdevice.h Fri Apr 9 11:33:59 2004
@@ -25,6 +25,7 @@
#define _LINUX_ETHERDEVICE_H
#include <linux/if_ether.h>
+#include <linux/random.h>
#ifdef __KERNEL__
extern int eth_header(struct sk_buff *skb, struct net_device *dev,
@@ -64,6 +65,19 @@
return !(addr[0]&1) && memcmp( addr, zaddr, 6);
}
+/**
+ * random_ether_addr - Generate software assigned random Ethernet address
+ * @addr: Pointer to a six-byte array containing the Ethernet address
+ *
+ * Generate a random Ethernet address (MAC) that is not multicast
+ * and has the local assigned bit set.
+ */
+static inline void random_ether_addr(u8 *addr)
+{
+ get_random_bytes (addr, ETH_ALEN);
+ addr [0] &= 0xfe; /* clear multicast bit */
+ addr [0] |= 0x02; /* set local assignment bit (IEEE802) */
+}
#endif
#endif /* _LINUX_ETHERDEVICE_H */
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