ionic: set station addr only if needed

The code was working too hard and in some cases was trying to
delete filters that weren't there, generating a potentially
misleading error message.
    IONIC_CMD_RX_FILTER_DEL (32) failed: IONIC_RC_ENOENT (-2)

Fixes: 2a654540be10 ("ionic: Add Rx filter and rx_mode ndo support")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index f8f437a..5acf4f4 100644 (file)
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -2341,24 +2341,30 @@ static int ionic_station_set(struct ionic_lif *lif)
        err = ionic_adminq_post_wait(lif, &ctx);
        if (err)
                return err;
-
+       netdev_dbg(lif->netdev, "found initial MAC addr %pM\n",
+                  ctx.comp.lif_getattr.mac);
        if (is_zero_ether_addr(ctx.comp.lif_getattr.mac))
                return 0;
 
-       memcpy(addr.sa_data, ctx.comp.lif_getattr.mac, netdev->addr_len);
-       addr.sa_family = AF_INET;
-       err = eth_prepare_mac_addr_change(netdev, &addr);
-       if (err) {
-               netdev_warn(lif->netdev, "ignoring bad MAC addr from NIC %pM - err %d\n",
-                           addr.sa_data, err);
-               return 0;
-       }
+       if (!ether_addr_equal(ctx.comp.lif_getattr.mac, netdev->dev_addr)) {
+               memcpy(addr.sa_data, ctx.comp.lif_getattr.mac, netdev->addr_len);
+               addr.sa_family = AF_INET;
+               err = eth_prepare_mac_addr_change(netdev, &addr);
+               if (err) {
+                       netdev_warn(lif->netdev, "ignoring bad MAC addr from NIC %pM - err %d\n",
+                                   addr.sa_data, err);
+                       return 0;
+               }
 
-       netdev_dbg(lif->netdev, "deleting station MAC addr %pM\n",
-                  netdev->dev_addr);
-       ionic_lif_addr(lif, netdev->dev_addr, false);
+               if (!is_zero_ether_addr(netdev->dev_addr)) {
+                       netdev_dbg(lif->netdev, "deleting station MAC addr %pM\n",
+                                  netdev->dev_addr);
+                       ionic_lif_addr(lif, netdev->dev_addr, false);
+               }
+
+               eth_commit_mac_addr_change(netdev, &addr);
+       }
 
-       eth_commit_mac_addr_change(netdev, &addr);
        netdev_dbg(lif->netdev, "adding station MAC addr %pM\n",
                   netdev->dev_addr);
        ionic_lif_addr(lif, netdev->dev_addr, true);