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net: Get mac address from driver as seed

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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>
This commit is contained in:
Jimmy Du 2017-06-06 11:58:54 -05:00 committed by Joe Hershberger
parent 8f0b169382
commit b044cc1dee
1 changed files with 2 additions and 2 deletions
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4
net/net_rand.h
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@ -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;