From: Jimmy Du <jimmy.du@ni.com>
Date: Tue, 6 Jun 2017 16:58:54 +0000 (-0500)
Subject: net: Get mac address from driver as seed
X-Git-Tag: v2017.09-rc2~95^2~17
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=b044cc1dee8f8af4dcad6ca2ef3ff4f577b79229;p=oweals%2Fu-boot.git

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 ba9d0642cf..4bf9bd817e 100644
--- 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;