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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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6
drivers/net/pcnet32.c
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@@ -448,7 +448,7 @@ static void pcnet32_netif_stop(struct net_device *dev)
{
struct pcnet32_private *lp = netdev_priv(dev);
dev->trans_start = jiffies;
dev->trans_start = jiffies; /* prevent tx timeout */
napi_disable(&lp->napi);
netif_tx_disable(dev);
}
@@ -2398,7 +2398,7 @@ static void pcnet32_tx_timeout(struct net_device *dev)
}
pcnet32_restart(dev, CSR0_NORMAL);
dev->trans_start = jiffies;
dev->trans_start = jiffies; /* prevent tx timeout */
netif_wake_queue(dev);
spin_unlock_irqrestore(&lp->lock, flags);
@@ -2449,8 +2449,6 @@ static netdev_tx_t pcnet32_start_xmit(struct sk_buff *skb,
/* Trigger an immediate send poll. */
lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_TXPOLL);
dev->trans_start = jiffies;
if (lp->tx_ring[(entry + 1) & lp->tx_mod_mask].base != 0) {
lp->tx_full = 1;
netif_stop_queue(dev);