ice: Fix check for removing/adding mac filters

In function ice_set_mac_address, we will remove old dev_addr before
adding the new MAC. In the removing and adding process of the MAC,
there is no need to return error if the check finds the to-be-removed
dev_addr does not exist in the MAC filter list or the to-be-added mac
already exists, keep going or return success accordingly.

Signed-off-by: Lihong Yang <lihong.yang@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 7fee3e4..6ac3e55 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -3707,19 +3707,24 @@ static int ice_set_mac_address(struct net_device *netdev, void *pi)
                return -EBUSY;
        }
 
-       /* Clean up old MAC filter before changing the MAC address */
+       /* Clean up old MAC filter. Not an error if old filter doesn't exist */
        status = ice_fltr_remove_mac(vsi, netdev->dev_addr, ICE_FWD_TO_VSI);
-       if (status) {
+       if (status && status != ICE_ERR_DOES_NOT_EXIST) {
                err = -EADDRNOTAVAIL;
                goto err_update_filters;
        }
 
+       /* Add filter for new MAC. If filter exists, just return success */
        status = ice_fltr_add_mac(vsi, mac, ICE_FWD_TO_VSI);
-       if (status) {
-               err = -EADDRNOTAVAIL;
-               goto err_update_filters;
+       if (status == ICE_ERR_ALREADY_EXISTS) {
+               netdev_dbg(netdev, "filter for MAC %pM already exists\n", mac);
+               return 0;
        }
 
+       /* error if the new filter addition failed */
+       if (status)
+               err = -EADDRNOTAVAIL;
+
 err_update_filters:
        if (err) {
                netdev_err(netdev, "can't set MAC %pM. filter update failed\n",