i40e: Add support for Tx byte queue limits

Implement BQL (byte queue limit) support in i40e.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index 52dfac206f75577fcf551491d1744b4bb116f3bc..ad2818f26821e53365080ae6de356a90a3ad64cf 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -240,6 +240,13 @@ void i40e_clean_tx_ring(struct i40e_ring *tx_ring)
 
        tx_ring->next_to_use = 0;
        tx_ring->next_to_clean = 0;
+
+       if (!tx_ring->netdev)
+               return;
+
+       /* cleanup Tx queue statistics */
+       netdev_tx_reset_queue(netdev_get_tx_queue(tx_ring->netdev,
+                                                 tx_ring->queue_index));
 }
 
 /**
@@ -436,6 +443,10 @@ static bool i40e_clean_tx_irq(struct i40e_ring *tx_ring, int budget)
                return true;
        }
 
+       netdev_tx_completed_queue(netdev_get_tx_queue(tx_ring->netdev,
+                                                     tx_ring->queue_index),
+                                 total_packets, total_bytes);
+
 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
        if (unlikely(total_packets && netif_carrier_ok(tx_ring->netdev) &&
                     (I40E_DESC_UNUSED(tx_ring) >= TX_WAKE_THRESHOLD))) {
@@ -1602,6 +1613,10 @@ static void i40e_tx_map(struct i40e_ring *tx_ring, struct sk_buff *skb,
                build_ctob(td_cmd, td_offset, size, td_tag) |
                cpu_to_le64((u64)I40E_TXD_CMD << I40E_TXD_QW1_CMD_SHIFT);
 
+       netdev_tx_sent_queue(netdev_get_tx_queue(tx_ring->netdev,
+                                                tx_ring->queue_index),
+                            first->bytecount);
+
        /* set the timestamp */
        first->time_stamp = jiffies;