e1000e: Support for byte queue limits

Changes to e1000e to use byte queue limits.

Signed-off-by: Tom Herbert <therbert@google.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index a5bd7a3..c6e9763 100644 (file)
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -1079,6 +1079,7 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
        unsigned int i, eop;
        unsigned int count = 0;
        unsigned int total_tx_bytes = 0, total_tx_packets = 0;
+       unsigned int bytes_compl = 0, pkts_compl = 0;
 
        i = tx_ring->next_to_clean;
        eop = tx_ring->buffer_info[i].next_to_watch;
@@ -1096,6 +1097,10 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
                        if (cleaned) {
                                total_tx_packets += buffer_info->segs;
                                total_tx_bytes += buffer_info->bytecount;
+                               if (buffer_info->skb) {
+                                       bytes_compl += buffer_info->skb->len;
+                                       pkts_compl++;
+                               }
                        }
 
                        e1000_put_txbuf(adapter, buffer_info);
@@ -1114,6 +1119,8 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter)
 
        tx_ring->next_to_clean = i;
 
+       netdev_completed_queue(netdev, pkts_compl, bytes_compl);
+
 #define TX_WAKE_THRESHOLD 32
        if (count && netif_carrier_ok(netdev) &&
            e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) {
@@ -2240,6 +2247,7 @@ static void e1000_clean_tx_ring(struct e1000_adapter *adapter)
                e1000_put_txbuf(adapter, buffer_info);
        }
 
+       netdev_reset_queue(adapter->netdev);
        size = sizeof(struct e1000_buffer) * tx_ring->count;
        memset(tx_ring->buffer_info, 0, size);
 
@@ -5027,6 +5035,7 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
        /* if count is 0 then mapping error has occurred */
        count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss);
        if (count) {
+               netdev_sent_queue(netdev, skb->len);
                e1000_tx_queue(adapter, tx_flags, count);
                /* Make sure there is space in the ring for the next send. */
                e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2);