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[PATCH] sky2: reschedule if irq still pending

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This is a workaround for the case edge-triggered irq's. Several users
seem to have broken configurations sharing edge-triggered irq's. To avoid
losing IRQ's, reshedule if more work arrives.

The changes to netdevice.h are to extract the part that puts device
back in list into separate inline.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Stephen Hemminger
2006-04-25 10:58:50 -07:00
committed by Jeff Garzik
parent 3b908870b8
commit 734cbc363b
2 changed files with 26 additions and 12 deletions
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18
include/linux/netdevice.h
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@@ -829,19 +829,21 @@ static inline void netif_rx_schedule(struct net_device *dev)
__netif_rx_schedule(dev);
}
/* Try to reschedule poll. Called by dev->poll() after netif_rx_complete().
* Do not inline this?
*/
static inline void __netif_rx_reschedule(struct net_device *dev, int undo)
{
dev->quota += undo;
list_add_tail(&dev->poll_list, &__get_cpu_var(softnet_data).poll_list);
__raise_softirq_irqoff(NET_RX_SOFTIRQ);
}
/* Try to reschedule poll. Called by dev->poll() after netif_rx_complete(). */
static inline int netif_rx_reschedule(struct net_device *dev, int undo)
{
if (netif_rx_schedule_prep(dev)) {
unsigned long flags;
dev->quota += undo;
local_irq_save(flags);
list_add_tail(&dev->poll_list, &__get_cpu_var(softnet_data).poll_list);
__raise_softirq_irqoff(NET_RX_SOFTIRQ);
__netif_rx_reschedule(dev, undo);
local_irq_restore(flags);
return 1;
}