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

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Followup of commits 9d21493b4b
and 08baf56108
(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>
This commit is contained in:
Eric Dumazet
2009-05-27 19:26:37 +00:00
committed by David S. Miller
parent 3f1f39c42b
commit 28679751a9
16 changed files with 8 additions and 25 deletions
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6
drivers/net/vxge/vxge-main.c
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@@ -677,7 +677,7 @@ vxge_xmit_compl(struct __vxge_hw_fifo *fifo_hw, void *dtr,
return VXGE_HW_OK;
}
/* select a vpath to trasmit the packet */
/* select a vpath to transmit the packet */
static u32 vxge_get_vpath_no(struct vxgedev *vdev, struct sk_buff *skb,
int *do_lock)
{
@@ -992,7 +992,9 @@ vxge_xmit(struct sk_buff *skb, struct net_device *dev)
VXGE_HW_FIFO_TXD_TX_CKO_UDP_EN);
vxge_hw_fifo_txdl_post(fifo_hw, dtr);
dev->trans_start = jiffies;
#ifdef NETIF_F_LLTX
dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
#endif
spin_unlock_irqrestore(&fifo->tx_lock, flags);
VXGE_COMPLETE_VPATH_TX(fifo);