igbvf: use netif_carrier_off earlier when bringing if down

Use netif_carrier_off() first, since that will prevent the stack from
queuing more packets to this IF. This operation is fast, and should
behave much nicer when trying to bring down an interface under load.

Reported-by: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/net/ethernet/intel/igbvf/netdev.c b/drivers/net/ethernet/intel/igbvf/netdev.c
index c17ea4b8f84d..95af14e139d7 100644
--- a/drivers/net/ethernet/intel/igbvf/netdev.c
+++ b/drivers/net/ethernet/intel/igbvf/netdev.c
@@ -1519,6 +1519,7 @@ void igbvf_down(struct igbvf_adapter *adapter)
         rxdctl = er32(RXDCTL(0));
         ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE);
 
+        netif_carrier_off(netdev);
         netif_stop_queue(netdev);
 
         /* disable transmits in the hardware */
@@ -1535,8 +1536,6 @@ void igbvf_down(struct igbvf_adapter *adapter)
 
         del_timer_sync(&adapter->watchdog_timer);
 
-        netif_carrier_off(netdev);
-
         /* record the stats before reset*/
         igbvf_update_stats(adapter);