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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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1
drivers/net/tokenring/ibmtr.c
View File

@@ -1041,7 +1041,6 @@ static netdev_tx_t tok_send_packet(struct sk_buff *skb,
writew(ti->exsap_station_id, ti->srb + STATION_ID_OFST);
writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
spin_unlock_irqrestore(&(ti->lock), flags);
dev->trans_start = jiffies;
return NETDEV_TX_OK;
}

2
drivers/net/tokenring/smctr.c
View File

@@ -4562,7 +4562,7 @@ static void smctr_timeout(struct net_device *dev)
* fake transmission time and go on trying. Our own timeout
* routine is in sktr_timer_chk()
*/
dev->trans_start = jiffies;
dev->trans_start = jiffies; /* prevent tx timeout */
netif_wake_queue(dev);
}

2
drivers/net/tokenring/tms380tr.c
View File

@@ -592,7 +592,7 @@ static void tms380tr_timeout(struct net_device *dev)
* fake transmission time and go on trying. Our own timeout
* routine is in tms380tr_timer_chk()
*/
dev->trans_start = jiffies;
dev->trans_start = jiffies; /* prevent tx timeout */
netif_wake_queue(dev);
}