net: Get mac address from driver as seed

Previously seeded by obtaining mac addr from env. If mac addr was
never set, rand would output 0. This fix obtains the mac addr
from driver instead.

Signed-off-by: Jimmy Du <jimmy.du@ni.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

diff --git a/net/net_rand.h b/net/net_rand.h
index ba9d0642cf231ab2ed14c162f2c7fb975f315574..4bf9bd817e5f6fa3df21ebfc14101cf1e30f66af 100644 (file)
--- a/net/net_rand.h
+++ b/net/net_rand.h
@@ -16,11 +16,11 @@
  */
 static inline unsigned int seed_mac(void)
 {
-       unsigned char enetaddr[6];
+       unsigned char enetaddr[ARP_HLEN];
        unsigned int seed;
 
        /* get our mac */
-       eth_getenv_enetaddr("ethaddr", enetaddr);
+       memcpy(enetaddr, eth_get_ethaddr(), ARP_HLEN);
 
        seed = enetaddr[5];
        seed ^= enetaddr[4] << 8;