netdev - [net-next 2/9] i40e: make visible changed vf mac on host

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Date:   Thu,  1 Aug 2019 13:51:42 -0700
From:   Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:     davem@...emloft.net
Cc:     Aleksandr Loktionov <aleksandr.loktionov@...el.com>,
        netdev@...r.kernel.org, nhorman@...hat.com, sassmann@...hat.com,
        Andrew Bowers <andrewx.bowers@...el.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 2/9] i40e: make visible changed vf mac on host

From: Aleksandr Loktionov <aleksandr.loktionov@...el.com>

This patch makes changed VM mac address visible on host via
ip link show command. This problem is fixed by copying last
unicast mac filter to vf->default_lan_addr.addr. Without
this patch if VF MAC was not set from host side and
if you run ip link show $pf, on host side you'd always
see a zero MAC, not the real VF MAC that VF assigned to
itself.

Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
index 02b09a8ad54c..21f7ac514d1f 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c
@@ -2629,6 +2629,9 @@ static int i40e_vc_add_mac_addr_msg(struct i40e_vf *vf, u8 *msg)
 			} else {
 				vf->num_mac++;
 			}
+			if (is_valid_ether_addr(al->list[i].addr))
+				ether_addr_copy(vf->default_lan_addr.addr,
+						al->list[i].addr);
 		}
 	}
 	spin_unlock_bh(&vsi->mac_filter_hash_lock);
-- 
2.21.0