net: dont update dev->trans_start in 10GB drivers

Followup of commits 9d21493b4beb8f918ba248032fefa393074a5e2b
and 08baf561083bc27a953aa087dd8a664bb2b88e8e
(net: tx scalability works : trans_start)
(net: txq_trans_update() helper)

Now that core network takes care of trans_start updates, dont do it
in drivers themselves, if possible. Multi queue drivers can
avoid one cache miss (on dev->trans_start) in their start_xmit()
handler.

Exceptions are NETIF_F_LLTX drivers (vxge & tehuti)

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

1 files changed, 0 insertions, 1 deletions

diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index dff1da8ae5c4..924aa5ed02ce 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -4863,7 +4863,6 @@ static int ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
         if (count) {
                 ixgbe_tx_queue(adapter, tx_ring, tx_flags, count, skb->len,
                                hdr_len);
-                netdev->trans_start = jiffies;
                 ixgbe_maybe_stop_tx(netdev, tx_ring, DESC_NEEDED);
 
         } else {