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>

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>
Jimmy Du · Joe Hershberger
1 parent 8f0b169382
Showing 1 changed file with 2 additions and 2 deletions Side-by-side Diff
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;
...	...	@@ -16,11 +16,11 @@
16	16	*/
17	17	static inline unsigned int seed_mac(void)
18	18	{
19		- unsigned char enetaddr[6];
	19	+ unsigned char enetaddr[ARP_HLEN];
20	20	unsigned int seed;
21	21
22	22	/* get our mac */
23		- eth_getenv_enetaddr("ethaddr", enetaddr);
	23	+ memcpy(enetaddr, eth_get_ethaddr(), ARP_HLEN);
24	24
25	25	seed = enetaddr[5];
26	26	seed ^= enetaddr[4] << 8;