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staging: et131x: on transmit, stop the queue if the next packet will fail 

* Currently the tx queue is only stopped when the current packet fails.
Check if the next packet will fail, and stop the queue if so.

* Removed associated item from TODO list in the README.

* Also minor fixup as adapter was being declared as null and immediately set
to a value.

Signed-off-by: Mark Einon <mark.einon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Mark Einon 2011-10-20 01:18:46 +01:00 committed by Greg Kroah-Hartman
parent 26d19bf60b
commit 06709e9623
2 changed files with 6 additions and 8 deletions
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1
drivers/staging/et131x/README
View File

@ -9,7 +9,6 @@ driver as they did not build properly at the time.
TODO:
- Use of kmem_cache seems a bit unusual
- It's too late stopping the tx queue when there is no room for the current packet. The condition should be detected for the next packet.
Please send patches to:
Greg Kroah-Hartman <gregkh@suse.de>

13
drivers/staging/et131x/et131x.c
View File

@ -3448,9 +3448,7 @@ static int send_packet(struct sk_buff *skb, struct et131x_adapter *adapter)
int et131x_send_packets(struct sk_buff *skb, struct net_device *netdev)
{
int status = 0;
struct et131x_adapter *adapter = NULL;
adapter = netdev_priv(netdev);
struct et131x_adapter *adapter = netdev_priv(netdev);
/* Send these packets
*
@ -5347,6 +5345,11 @@ static void et131x_multicast(struct net_device *netdev)
static int et131x_tx(struct sk_buff *skb, struct net_device *netdev)
{
int status = 0;
struct et131x_adapter *adapter = netdev_priv(netdev);
/* stop the queue if it's getting full */
if(adapter->tx_ring.used >= NUM_TCB - 1 && !netif_queue_stopped(netdev))
netif_stop_queue(netdev);
/* Save the timestamp for the TX timeout watchdog */
netdev->trans_start = jiffies;
@ -5357,10 +5360,6 @@ static int et131x_tx(struct sk_buff *skb, struct net_device *netdev)
/* Check status and manage the netif queue if necessary */
if (status != 0) {
if (status == -ENOMEM) {
/* Put the queue to sleep until resources are
* available
*/
netif_stop_queue(netdev);
status = NETDEV_TX_BUSY;
} else {
status = NETDEV_TX_OK;