ixgbe: add support for nfc addition and removal of filters

This change is meant to allow for nfc to insert and remove filters in order
to test the ethtool interface which includes it's own rules manager.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index e177b5d061fe..2886daec70ae 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -3741,6 +3741,28 @@ static void ixgbe_configure_pb(struct ixgbe_adapter *adapter)
 	hw->mac.ops.set_rxpba(&adapter->hw, num_tc, hdrm, PBA_STRATEGY_EQUAL);
 }
 
+static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter)
+{
+	struct ixgbe_hw *hw = &adapter->hw;
+	struct hlist_node *node, *node2;
+	struct ixgbe_fdir_filter *filter;
+
+	spin_lock(&adapter->fdir_perfect_lock);
+
+	if (!hlist_empty(&adapter->fdir_filter_list))
+		ixgbe_fdir_set_input_mask_82599(hw, &adapter->fdir_mask);
+
+	hlist_for_each_entry_safe(filter, node, node2,
+				  &adapter->fdir_filter_list, fdir_node) {
+		ixgbe_fdir_write_perfect_filter_82599(hw,
+						      &filter->filter,
+						      filter->sw_idx,
+						      filter->action);
+	}
+
+	spin_unlock(&adapter->fdir_perfect_lock);
+}
+
 static void ixgbe_configure(struct ixgbe_adapter *adapter)
 {
 	struct net_device *netdev = adapter->netdev;
@@ -3765,6 +3787,10 @@ static void ixgbe_configure(struct ixgbe_adapter *adapter)
 			adapter->tx_ring[i]->atr_sample_rate =
 						       adapter->atr_sample_rate;
 		ixgbe_init_fdir_signature_82599(hw, adapter->fdir_pballoc);
+	} else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) {
+		ixgbe_init_fdir_perfect_82599(&adapter->hw,
+					      adapter->fdir_pballoc);
+		ixgbe_fdir_filter_restore(adapter);
 	}
 	ixgbe_configure_virtualization(adapter);
 
@@ -4141,6 +4167,23 @@ static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter)
 		ixgbe_clean_tx_ring(adapter->tx_ring[i]);
 }
 
+static void ixgbe_fdir_filter_exit(struct ixgbe_adapter *adapter)
+{
+	struct hlist_node *node, *node2;
+	struct ixgbe_fdir_filter *filter;
+
+	spin_lock(&adapter->fdir_perfect_lock);
+
+	hlist_for_each_entry_safe(filter, node, node2,
+				  &adapter->fdir_filter_list, fdir_node) {
+		hlist_del(&filter->fdir_node);
+		kfree(filter);
+	}
+	adapter->fdir_filter_count = 0;
+
+	spin_unlock(&adapter->fdir_perfect_lock);
+}
+
 void ixgbe_down(struct ixgbe_adapter *adapter)
 {
 	struct net_device *netdev = adapter->netdev;
@@ -5527,6 +5570,8 @@ static int ixgbe_close(struct net_device *netdev)
 	ixgbe_down(adapter);
 	ixgbe_free_irq(adapter);
 
+	ixgbe_fdir_filter_exit(adapter);
+
 	ixgbe_free_all_tx_resources(adapter);
 	ixgbe_free_all_rx_resources(adapter);