ixgbe/ixgbevf: Add support for bulk free in Tx cleanup & cleanup boolean logic

BugLink: http://bugs.launchpad.net/bugs/1616677

This patch enables bulk free in Tx cleanup for ixgbevf and cleans up the
boolean logic in the polling routines for ixgbe and ixgbevf in the hopes of
avoiding any mix-ups similar to what occurred with i40e and i40evf.
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 8220bbc1)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Brad Figg <brad.figg@canonical.com>
Acked-by: Kamal Mostafa <kamal@canonical.com>

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

@@ -1090,6 +1090,7 @@ static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter)
  * ixgbe_clean_tx_irq - Reclaim resources after transmit completes
  * @q_vector: structure containing interrupt and ring information
  * @tx_ring: tx ring to clean
+ * @napi_budget: Used to determine if we are in netpoll
  **/
 static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
 			       struct ixgbe_ring *tx_ring, int napi_budget)
@@ -2786,8 +2787,10 @@ int ixgbe_poll(struct napi_struct *napi, int budget)
 		ixgbe_update_dca(q_vector);
 #endif
 
-	ixgbe_for_each_ring(ring, q_vector->tx)
-		clean_complete &= !!ixgbe_clean_tx_irq(q_vector, ring, budget);
+	ixgbe_for_each_ring(ring, q_vector->tx) {
+		if (!ixgbe_clean_tx_irq(q_vector, ring, budget))
+			clean_complete = false;
+	}
 
 	/* Exit if we are called by netpoll or busy polling is active */
 	if ((budget <= 0) || !ixgbe_qv_lock_napi(q_vector))
@@ -2805,7 +2808,8 @@ int ixgbe_poll(struct napi_struct *napi, int budget)
 						 per_ring_budget);
 
 		work_done += cleaned;
-		clean_complete &= (cleaned < per_ring_budget);
+		if (cleaned >= per_ring_budget)
+			clean_complete = false;
 	}
 
 	ixgbe_qv_unlock_napi(q_vector);

drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c

@@ -288,9 +288,10 @@ static void ixgbevf_tx_timeout(struct net_device *netdev)
  * ixgbevf_clean_tx_irq - Reclaim resources after transmit completes
  * @q_vector: board private structure
  * @tx_ring: tx ring to clean
+ * @napi_budget: Used to determine if we are in netpoll
  **/
 static bool ixgbevf_clean_tx_irq(struct ixgbevf_q_vector *q_vector,
-				 struct ixgbevf_ring *tx_ring)
+				 struct ixgbevf_ring *tx_ring, int napi_budget)
 {
 	struct ixgbevf_adapter *adapter = q_vector->adapter;
 	struct ixgbevf_tx_buffer *tx_buffer;
@@ -328,7 +329,7 @@ static bool ixgbevf_clean_tx_irq(struct ixgbevf_q_vector *q_vector,
 		total_packets += tx_buffer->gso_segs;
 
 		/* free the skb */
-		dev_kfree_skb_any(tx_buffer->skb);
+		napi_consume_skb(tx_buffer->skb, napi_budget);
 
 		/* unmap skb header data */
 		dma_unmap_single(tx_ring->dev,
@@ -1013,8 +1014,10 @@ static int ixgbevf_poll(struct napi_struct *napi, int budget)
 	int per_ring_budget, work_done = 0;
 	bool clean_complete = true;
 
-	ixgbevf_for_each_ring(ring, q_vector->tx)
-		clean_complete &= ixgbevf_clean_tx_irq(q_vector, ring);
+	ixgbevf_for_each_ring(ring, q_vector->tx) {
+		if (!ixgbevf_clean_tx_irq(q_vector, ring, budget))
+			clean_complete = false;
+	}
 
 	if (budget <= 0)
 		return budget;
@@ -1035,7 +1038,8 @@ static int ixgbevf_poll(struct napi_struct *napi, int budget)
 		int cleaned = ixgbevf_clean_rx_irq(q_vector, ring,
 						   per_ring_budget);
 		work_done += cleaned;
-		clean_complete &= (cleaned < per_ring_budget);
+		if (cleaned >= per_ring_budget)
+			clean_complete = false;
 	}
 
 #ifdef CONFIG_NET_RX_BUSY_POLL