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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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10
drivers/net/hp100.c
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@@ -1102,7 +1102,7 @@ static int hp100_open(struct net_device *dev)
return -EAGAIN;
}
dev->trans_start = jiffies;
dev->trans_start = jiffies; /* prevent tx timeout */
netif_start_queue(dev);
lp->lan_type = hp100_sense_lan(dev);
@@ -1510,7 +1510,7 @@ static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
printk("hp100: %s: start_xmit_bm: No TX PDL available.\n", dev->name);
#endif
/* not waited long enough since last tx? */
if (time_before(jiffies, dev->trans_start + HZ))
if (time_before(jiffies, dev_trans_start(dev) + HZ))
goto drop;
if (hp100_check_lan(dev))
@@ -1547,7 +1547,6 @@ static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
}
}
dev->trans_start = jiffies;
goto drop;
}
@@ -1585,7 +1584,6 @@ static netdev_tx_t hp100_start_xmit_bm(struct sk_buff *skb,
/* Update statistics */
lp->stats.tx_packets++;
lp->stats.tx_bytes += skb->len;
dev->trans_start = jiffies;
return NETDEV_TX_OK;
@@ -1663,7 +1661,7 @@ static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
printk("hp100: %s: start_xmit: tx free mem = 0x%x\n", dev->name, i);
#endif
/* not waited long enough since last failed tx try? */
if (time_before(jiffies, dev->trans_start + HZ)) {
if (time_before(jiffies, dev_trans_start(dev) + HZ)) {
#ifdef HP100_DEBUG
printk("hp100: %s: trans_start timing problem\n",
dev->name);
@@ -1701,7 +1699,6 @@ static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
mdelay(1);
}
}
dev->trans_start = jiffies;
goto drop;
}
@@ -1745,7 +1742,6 @@ static netdev_tx_t hp100_start_xmit(struct sk_buff *skb,
lp->stats.tx_packets++;
lp->stats.tx_bytes += skb->len;
dev->trans_start = jiffies;
hp100_ints_on();
spin_unlock_irqrestore(&lp->lock, flags);