Commit ab8ced2f authored by Auke Kok's avatar Auke Kok Committed by Auke Kok
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ixgb: recalculate after how many descriptors to wake the queue 



Recalculate when to wake the queue using DESC_NEEDED instead of a
static hardcoded number.

Signed-off-by: default avatarAuke Kok <auke-jan.h.kok@intel.com>
parent a91bb6a8

drivers/net/ixgb/ixgb.h

+0 −3
Original line number Diff line number Diff line
@@ -110,9 +110,6 @@ struct ixgb_adapter; 
#define IXGB_RXBUFFER_8192  8192

#define IXGB_RXBUFFER_16384 16384



/* How many Tx Descriptors do we need to call netif_wake_queue? */

#define IXGB_TX_QUEUE_WAKE 16



/* How many Rx Buffers do we bundle into one write to the hardware ? */

#define IXGB_RX_BUFFER_WRITE	4	/* Must be power of 2 */

drivers/net/ixgb/ixgb_main.c

+1 −1
Original line number Diff line number Diff line
@@ -1787,7 +1787,7 @@ ixgb_clean_tx_irq(struct ixgb_adapter *adapter) 
	if (unlikely(netif_queue_stopped(netdev))) {

		spin_lock(&adapter->tx_lock);

		if (netif_queue_stopped(netdev) && netif_carrier_ok(netdev) &&

		    (IXGB_DESC_UNUSED(tx_ring) > IXGB_TX_QUEUE_WAKE))

		    (IXGB_DESC_UNUSED(tx_ring) >= DESC_NEEDED))

			netif_wake_queue(netdev);

		spin_unlock(&adapter->tx_lock);

	}