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net: trans_start cleanups

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

Exceptions are NETIF_F_LLTX drivers

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
2010-05-10 05:01:31 -07:00
committed by David S. Miller
parent 2b0b05ddc0
commit 1ae5dc342a
168 changed files with 103 additions and 314 deletions
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4
drivers/net/gianfar.c
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@@ -1738,7 +1738,7 @@ void gfar_start(struct net_device *dev)
gfar_write(&regs->imask, IMASK_DEFAULT);
}
dev->trans_start = jiffies;
dev->trans_start = jiffies; /* prevent tx timeout */
}
void gfar_configure_coalescing(struct gfar_private *priv,
@@ -2161,8 +2161,6 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* reduce TxBD free count */
tx_queue->num_txbdfree -= (nr_txbds);
dev->trans_start = jiffies;
/* If the next BD still needs to be cleaned up, then the bds
are full. We need to tell the kernel to stop sending us stuff. */
if (!tx_queue->num_txbdfree) {