Author: mav
Date: Sat Jul 30 15:51:16 2016
New Revision: 303553
URL: https://svnweb.freebsd.org/changeset/base/303553
Log:
Make MAC address generation more random.
'ticks' approach does not work at boot time.
Modified:
head/sys/dev/ntb/if_ntb/if_ntb.c
Modified: head/sys/dev/ntb/if_ntb/if_ntb.c
==============================================================================
--- head/sys/dev/ntb/if_ntb/if_ntb.c Sat Jul 30 14:47:04 2016
(r303552)
+++ head/sys/dev/ntb/if_ntb/if_ntb.c Sat Jul 30 15:51:16 2016
(r303553)
@@ -493,10 +493,9 @@ static void
create_random_local_eui48(u_char *eaddr)
{
static uint8_t counter = 0;
- uint32_t seed = ticks;
eaddr[0] = EUI48_LOCALLY_ADMINISTERED;
- memcpy(&eaddr[1], &seed, sizeof(uint32_t));
+ arc4rand(&eaddr[1], 4, 0);
eaddr[5] = counter++;
}
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