e1000: fix tx waking queue after queue stopped during shutdown
This fix closes a race where the adapter can be shutting down while hard_start_xmit is being called and interrupts are being handled. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
be0f071956
commit
cdd7549e27
|
@ -2733,8 +2733,9 @@ static int e1000_tx_map(struct e1000_adapter *adapter,
|
|||
size -= 4;
|
||||
|
||||
buffer_info->length = size;
|
||||
buffer_info->dma = skb_shinfo(skb)->dma_head + offset;
|
||||
/* set time_stamp *before* dma to help avoid a possible race */
|
||||
buffer_info->time_stamp = jiffies;
|
||||
buffer_info->dma = skb_shinfo(skb)->dma_head + offset;
|
||||
buffer_info->next_to_watch = i;
|
||||
|
||||
len -= size;
|
||||
|
@ -2774,8 +2775,8 @@ static int e1000_tx_map(struct e1000_adapter *adapter,
|
|||
size -= 4;
|
||||
|
||||
buffer_info->length = size;
|
||||
buffer_info->dma = map[f] + offset;
|
||||
buffer_info->time_stamp = jiffies;
|
||||
buffer_info->dma = map[f] + offset;
|
||||
buffer_info->next_to_watch = i;
|
||||
|
||||
len -= size;
|
||||
|
@ -3459,7 +3460,9 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
|
|||
* sees the new next_to_clean.
|
||||
*/
|
||||
smp_mb();
|
||||
if (netif_queue_stopped(netdev)) {
|
||||
|
||||
if (netif_queue_stopped(netdev) &&
|
||||
!(test_bit(__E1000_DOWN, &adapter->flags))) {
|
||||
netif_wake_queue(netdev);
|
||||
++adapter->restart_queue;
|
||||
}
|
||||
|
@ -3469,8 +3472,8 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
|
|||
/* Detect a transmit hang in hardware, this serializes the
|
||||
* check with the clearing of time_stamp and movement of i */
|
||||
adapter->detect_tx_hung = false;
|
||||
if (tx_ring->buffer_info[i].time_stamp &&
|
||||
time_after(jiffies, tx_ring->buffer_info[i].time_stamp +
|
||||
if (tx_ring->buffer_info[eop].time_stamp &&
|
||||
time_after(jiffies, tx_ring->buffer_info[eop].time_stamp +
|
||||
(adapter->tx_timeout_factor * HZ))
|
||||
&& !(er32(STATUS) & E1000_STATUS_TXOFF)) {
|
||||
|
||||
|
@ -3492,7 +3495,7 @@ static bool e1000_clean_tx_irq(struct e1000_adapter *adapter,
|
|||
readl(hw->hw_addr + tx_ring->tdt),
|
||||
tx_ring->next_to_use,
|
||||
tx_ring->next_to_clean,
|
||||
tx_ring->buffer_info[i].time_stamp,
|
||||
tx_ring->buffer_info[eop].time_stamp,
|
||||
eop,
|
||||
jiffies,
|
||||
eop_desc->upper.fields.status);
|
||||
|
|
Loading…
Reference in a new issue