net: trans_start cleanups
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>
diff --git a/drivers/net/xilinx_emaclite.c b/drivers/net/xilinx_emaclite.c
index 93828d5..a7db68d 100644
--- a/drivers/net/xilinx_emaclite.c
+++ b/drivers/net/xilinx_emaclite.c
@@ -558,7 +558,7 @@
}
/* To exclude tx timeout */
- dev->trans_start = 0xffffffff - TX_TIMEOUT - TX_TIMEOUT;
+ dev->trans_start = jiffies; /* prevent tx timeout */
/* We're all ready to go. Start the queue */
netif_wake_queue(dev);
@@ -590,7 +590,7 @@
dev->stats.tx_bytes += lp->deferred_skb->len;
dev_kfree_skb_irq(lp->deferred_skb);
lp->deferred_skb = NULL;
- dev->trans_start = jiffies;
+ dev->trans_start = jiffies; /* prevent tx timeout */
netif_wake_queue(dev);
}
}
@@ -1054,7 +1054,6 @@
dev->stats.tx_bytes += len;
dev_kfree_skb(new_skb);
- dev->trans_start = jiffies;
return 0;
}