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Commit b2d96e0a authored by Alexander Duyck's avatar Alexander Duyck Committed by Jeff Kirsher
Browse files

ixgbe: add support for byte queue limits 



This adds support for byte queue limits (BQL).

Based on patch from Eric Dumazet for igb.

Signed-off-by: default avatarAlexander Duyck <alexander.h.duyck@intel.com>
Tested-by: default avatarStephen Ko <stephen.s.ko@intel.com>
parent 35551c47

drivers/net/ethernet/intel/ixgbe/ixgbe.h

+5 −0
Original line number Diff line number Diff line
@@ -643,4 +643,9 @@ extern int ixgbe_fcoe_get_hbainfo(struct net_device *netdev, 
				  struct netdev_fcoe_hbainfo *info);

#endif /* IXGBE_FCOE */



static inline struct netdev_queue *txring_txq(const struct ixgbe_ring *ring)

{

	return netdev_get_tx_queue(ring->netdev, ring->queue_index);

}



#endif /* _IXGBE_H_ */

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

+7 −0
Original line number Diff line number Diff line
@@ -840,6 +840,9 @@ static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector, 
		return true;

	}



	netdev_tx_completed_queue(txring_txq(tx_ring),

				  total_packets, total_bytes);



#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)

	if (unlikely(total_packets && netif_carrier_ok(tx_ring->netdev) &&

		     (ixgbe_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD))) {
@@ -2617,6 +2620,8 @@ void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter, 
	/* enable queue */

	IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl);



	netdev_tx_reset_queue(txring_txq(ring));



	/* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */

	if (hw->mac.type == ixgbe_mac_82598EB &&

	    !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP))
@@ -6808,6 +6813,8 @@ static void ixgbe_tx_map(struct ixgbe_ring *tx_ring, 
	tx_buffer_info->gso_segs = gso_segs;

	tx_buffer_info->skb = skb;



	netdev_tx_sent_queue(txring_txq(tx_ring), tx_buffer_info->bytecount);



	/* set the timestamp */

	first->time_stamp = jiffies;