i40e/i40evf: Add txring_txq function to match fm10k and ixgbe

This patch adds a txring_txq function which allows us to convert a
i40e_ring/i40evf_ring to a netdev_tx_queue structure.  This way we
can avoid having to make a multi-line function call for all the spots
that need access to this.

Change-ID: Ic063b71d8b92ea406d2c32e798c8e2b02809d65b
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Author: Alexander Duyck

drivers/net/ethernet/intel/i40e/i40e_txrx.c

@@ -584,8 +584,7 @@ void i40e_clean_tx_ring(struct i40e_ring *tx_ring)
 		return;
 
 	/* cleanup Tx queue statistics */
-	netdev_tx_reset_queue(netdev_get_tx_queue(tx_ring->netdev,
-						  tx_ring->queue_index));
+	netdev_tx_reset_queue(txring_txq(tx_ring));
 }
 
 /**
@@ -754,8 +753,8 @@ static bool i40e_clean_tx_irq(struct i40e_vsi *vsi,
 			tx_ring->arm_wb = true;
 	}
 
-	netdev_tx_completed_queue(netdev_get_tx_queue(tx_ring->netdev,
-						      tx_ring->queue_index),
+	/* notify netdev of completed buffers */
+	netdev_tx_completed_queue(txring_txq(tx_ring),
 				  total_packets, total_bytes);
 
 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
@@ -2784,9 +2783,7 @@ static inline void i40e_tx_map(struct i40e_ring *tx_ring, struct sk_buff *skb,
 
 	tx_ring->next_to_use = i;
 
-	netdev_tx_sent_queue(netdev_get_tx_queue(tx_ring->netdev,
-						 tx_ring->queue_index),
-						 first->bytecount);
+	netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount);
 	i40e_maybe_stop_tx(tx_ring, DESC_NEEDED);
 
 	/* Algorithm to optimize tail and RS bit setting:
@@ -2811,13 +2808,11 @@ static inline void i40e_tx_map(struct i40e_ring *tx_ring, struct sk_buff *skb,
 	 * trigger a force WB.
 	 */
 	if (skb->xmit_more  &&
-	    !netif_xmit_stopped(netdev_get_tx_queue(tx_ring->netdev,
-						    tx_ring->queue_index))) {
+	    !netif_xmit_stopped(txring_txq(tx_ring))) {
 		tx_ring->flags |= I40E_TXR_FLAGS_LAST_XMIT_MORE_SET;
 		tail_bump = false;
 	} else if (!skb->xmit_more &&
-		   !netif_xmit_stopped(netdev_get_tx_queue(tx_ring->netdev,
-						       tx_ring->queue_index)) &&
+		   !netif_xmit_stopped(txring_txq(tx_ring)) &&
 		   (!(tx_ring->flags & I40E_TXR_FLAGS_LAST_XMIT_MORE_SET)) &&
 		   (tx_ring->packet_stride < WB_STRIDE) &&
 		   (desc_count < WB_STRIDE)) {

drivers/net/ethernet/intel/i40e/i40e_txrx.h

@@ -463,4 +463,13 @@ static inline bool i40e_rx_is_fcoe(u16 ptype)
 	return (ptype >= I40E_RX_PTYPE_L2_FCOE_PAY3) &&
 	       (ptype <= I40E_RX_PTYPE_L2_FCOE_VFT_FCOTHER);
 }
+
+/**
+ * txring_txq - Find the netdev Tx ring based on the i40e Tx ring
+ * @ring: Tx ring to find the netdev equivalent of
+ **/
+static inline struct netdev_queue *txring_txq(const struct i40e_ring *ring)
+{
+	return netdev_get_tx_queue(ring->netdev, ring->queue_index);
+}
 #endif /* _I40E_TXRX_H_ */

drivers/net/ethernet/intel/i40evf/i40e_txrx.c

@@ -103,8 +103,7 @@ void i40evf_clean_tx_ring(struct i40e_ring *tx_ring)
 		return;
 
 	/* cleanup Tx queue statistics */
-	netdev_tx_reset_queue(netdev_get_tx_queue(tx_ring->netdev,
-						  tx_ring->queue_index));
+	netdev_tx_reset_queue(txring_txq(tx_ring));
 }
 
 /**
@@ -273,8 +272,8 @@ static bool i40e_clean_tx_irq(struct i40e_vsi *vsi,
 			tx_ring->arm_wb = true;
 	}
 
-	netdev_tx_completed_queue(netdev_get_tx_queue(tx_ring->netdev,
-						      tx_ring->queue_index),
+	/* notify netdev of completed buffers */
+	netdev_tx_completed_queue(txring_txq(tx_ring),
 				  total_packets, total_bytes);
 
 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
@@ -2012,9 +2011,7 @@ static inline void i40evf_tx_map(struct i40e_ring *tx_ring, struct sk_buff *skb,
 
 	tx_ring->next_to_use = i;
 
-	netdev_tx_sent_queue(netdev_get_tx_queue(tx_ring->netdev,
-						 tx_ring->queue_index),
-						 first->bytecount);
+	netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount);
 	i40e_maybe_stop_tx(tx_ring, DESC_NEEDED);
 
 	/* Algorithm to optimize tail and RS bit setting:
@@ -2039,13 +2036,11 @@ static inline void i40evf_tx_map(struct i40e_ring *tx_ring, struct sk_buff *skb,
 	 * trigger a force WB.
 	 */
 	if (skb->xmit_more  &&
-	    !netif_xmit_stopped(netdev_get_tx_queue(tx_ring->netdev,
-						    tx_ring->queue_index))) {
+	    !netif_xmit_stopped(txring_txq(tx_ring))) {
 		tx_ring->flags |= I40E_TXR_FLAGS_LAST_XMIT_MORE_SET;
 		tail_bump = false;
 	} else if (!skb->xmit_more &&
-		   !netif_xmit_stopped(netdev_get_tx_queue(tx_ring->netdev,
-						       tx_ring->queue_index)) &&
+		   !netif_xmit_stopped(txring_txq(tx_ring)) &&
 		   (!(tx_ring->flags & I40E_TXR_FLAGS_LAST_XMIT_MORE_SET)) &&
 		   (tx_ring->packet_stride < WB_STRIDE) &&
 		   (desc_count < WB_STRIDE)) {

drivers/net/ethernet/intel/i40evf/i40e_txrx.h

@@ -445,4 +445,13 @@ static inline bool i40e_rx_is_fcoe(u16 ptype)
 	return (ptype >= I40E_RX_PTYPE_L2_FCOE_PAY3) &&
 	       (ptype <= I40E_RX_PTYPE_L2_FCOE_VFT_FCOTHER);
 }
+
+/**
+ * txring_txq - Find the netdev Tx ring based on the i40e Tx ring
+ * @ring: Tx ring to find the netdev equivalent of
+ **/
+static inline struct netdev_queue *txring_txq(const struct i40e_ring *ring)
+{
+	return netdev_get_tx_queue(ring->netdev, ring->queue_index);
+}
 #endif /* _I40E_TXRX_H_ */