From d968f0f2e4404152f37ed2384b4a2269dd2dae5a Mon Sep 17 00:00:00 2001 From: Huy Nguyen Date: Thu, 29 Jun 2017 16:50:01 -0500 Subject: net/mlx5e: Initialize CEE's getpermhwaddr address buffer to 0xff Latest change in open-lldp code uses bytes 6-11 of perm_addr buffer as the Ethernet source address for the host TLV packet. Since our driver does not fill these bytes, they stay at zero and the open-lldp code ends up sending the TLV packet with zero source address and the switch drops this packet. The fix is to initialize these bytes to 0xff. The open-lldp code considers 0xff:ff:ff:ff:ff:ff as the invalid address and falls back to use the host's mac address as the Ethernet source address. Fixes: 3a6a931dfb8e ("net/mlx5e: Support DCBX CEE API") Signed-off-by: Huy Nguyen Reviewed-by: Daniel Jurgens Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/net') diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c index 8fa23f6a1f67..2eb54d36e16e 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c @@ -464,6 +464,8 @@ static void mlx5e_dcbnl_getpermhwaddr(struct net_device *netdev, if (!perm_addr) return; + memset(perm_addr, 0xff, MAX_ADDR_LEN); + mlx5_query_nic_vport_mac_address(priv->mdev, 0, perm_addr); } -- cgit v1.2.3