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 <[email protected]> Acked-by: Joe Hershberger <[email protected]>
RobCrowston · Aug 7, 2017 · b044cc1 · b044cc1
1 parent 8f0b169
commit b044cc1
Showing 1 changed file with 2 additions and 2 deletions.
diff --git 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;