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path: root/drivers/net/ixgbe/ixgbe_main.c
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Diffstat (limited to 'drivers/net/ixgbe/ixgbe_main.c')
-rw-r--r--drivers/net/ixgbe/ixgbe_main.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 6c90b6801cb..5020f11ae10 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -4110,6 +4110,9 @@ static void ixgbe_watchdog_task(struct work_struct *work)
struct ixgbe_hw *hw = &adapter->hw;
u32 link_speed = adapter->link_speed;
bool link_up = adapter->link_up;
+ int i;
+ struct ixgbe_ring *tx_ring;
+ int some_tx_pending = 0;
adapter->flags |= IXGBE_FLAG_IN_WATCHDOG_TASK;
@@ -4167,6 +4170,25 @@ static void ixgbe_watchdog_task(struct work_struct *work)
}
}
+ if (!netif_carrier_ok(netdev)) {
+ for (i = 0; i < adapter->num_tx_queues; i++) {
+ tx_ring = &adapter->tx_ring[i];
+ if (tx_ring->next_to_use != tx_ring->next_to_clean) {
+ some_tx_pending = 1;
+ break;
+ }
+ }
+
+ if (some_tx_pending) {
+ /* We've lost link, so the controller stops DMA,
+ * but we've got queued Tx work that's never going
+ * to get done, so reset controller to flush Tx.
+ * (Do the reset outside of interrupt context).
+ */
+ schedule_work(&adapter->reset_task);
+ }
+ }
+
ixgbe_update_stats(adapter);
adapter->flags &= ~IXGBE_FLAG_IN_WATCHDOG_TASK;
}