ixgbe: simplify the logic for setting VLAN filtering

Simplify the logic for setting VLNCTRL.VFE by checking the  VMDQ flag
and 82598 MAC instead of having to maintain a list of MAC types.

Signed-off-by: Emil Tantilov <emil.s.tantilov@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/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index d76bc1a..1c88858 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -4105,23 +4105,20 @@ static void ixgbe_vlan_promisc_enable(struct ixgbe_adapter *adapter)
 
        vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL);
 
-       switch (hw->mac.type) {
-       case ixgbe_mac_82599EB:
-       case ixgbe_mac_X540:
-       case ixgbe_mac_X550:
-       case ixgbe_mac_X550EM_x:
-       case ixgbe_mac_x550em_a:
-       default:
-               if (adapter->flags & IXGBE_FLAG_VMDQ_ENABLED)
-                       break;
-               /* fall through */
-       case ixgbe_mac_82598EB:
-               /* legacy case, we can just disable VLAN filtering */
+       if (adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) {
+       /* For VMDq and SR-IOV we must leave VLAN filtering enabled */
+               vlnctrl |= IXGBE_VLNCTRL_VFE;
+               IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
+       } else {
                vlnctrl &= ~IXGBE_VLNCTRL_VFE;
                IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
                return;
        }
 
+       /* Nothing to do for 82598 */
+       if (hw->mac.type == ixgbe_mac_82598EB)
+               return;
+
        /* We are already in VLAN promisc, nothing to do */
        if (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)
                return;
@@ -4129,10 +4126,6 @@ static void ixgbe_vlan_promisc_enable(struct ixgbe_adapter *adapter)
        /* Set flag so we don't redo unnecessary work */
        adapter->flags2 |= IXGBE_FLAG2_VLAN_PROMISC;
 
-       /* For VMDq and SR-IOV we must leave VLAN filtering enabled */
-       vlnctrl |= IXGBE_VLNCTRL_VFE;
-       IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
-
        /* Add PF to all active pools */
        for (i = IXGBE_VLVF_ENTRIES; --i;) {
                u32 reg_offset = IXGBE_VLVFB(i * 2 + VMDQ_P(0) / 32);
@@ -4204,19 +4197,9 @@ static void ixgbe_vlan_promisc_disable(struct ixgbe_adapter *adapter)
        vlnctrl |= IXGBE_VLNCTRL_VFE;
        IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl);
 
-       switch (hw->mac.type) {
-       case ixgbe_mac_82599EB:
-       case ixgbe_mac_X540:
-       case ixgbe_mac_X550:
-       case ixgbe_mac_X550EM_x:
-       case ixgbe_mac_x550em_a:
-       default:
-               if (adapter->flags & IXGBE_FLAG_VMDQ_ENABLED)
-                       break;
-               /* fall through */
-       case ixgbe_mac_82598EB:
+       if (!(adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) ||
+           hw->mac.type == ixgbe_mac_82598EB)
                return;
-       }
 
        /* We are not in VLAN promisc, nothing to do */
        if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC))