releases/4.4.133/bonding-do-not-allow-rlb-updates-to-invalid-mac.patch

   1 From foo@baz Wed May 16 16:57:32 CEST 2018
   2 From: Debabrata Banerjee <dbanerje@akamai.com>
   3 Date: Wed, 9 May 2018 19:32:10 -0400
   4 Subject: bonding: do not allow rlb updates to invalid mac
   5
   6 From: Debabrata Banerjee <dbanerje@akamai.com>
   7
   8 [ Upstream commit 4fa8667ca3989ce14cf66301fa251544fbddbdd0 ]
   9
  10 Make sure multicast, broadcast, and zero mac's cannot be the output of rlb
  11 updates, which should all be directed arps. Receive load balancing will be
  12 collapsed if any of these happen, as the switch will broadcast.
  13
  14 Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
  15 Signed-off-by: David S. Miller <davem@davemloft.net>
  16 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  17 ---
  18  drivers/net/bonding/bond_alb.c |    2 +-
  19  1 file changed, 1 insertion(+), 1 deletion(-)
  20
  21 --- a/drivers/net/bonding/bond_alb.c
  22 +++ b/drivers/net/bonding/bond_alb.c
  23 @@ -453,7 +453,7 @@ static void rlb_update_client(struct rlb
  24  {
  25         int i;
  26
  27 -       if (!client_info->slave)
  28 +       if (!client_info->slave || !is_valid_ether_addr(client_info->mac_dst))
  29                 return;
  30
  31         for (i = 0; i < RLB_ARP_BURST_SIZE; i++) {