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igbvf: use netif_carrier_off earlier when bringing if down

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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>
This commit is contained in:
Todd Fujinaka 2015-03-20 17:41:54 -07:00 committed by Jeff Kirsher
parent f28ea083a3
commit 784401bfc0
1 changed files with 1 additions and 2 deletions
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3
drivers/net/ethernet/intel/igbvf/netdev.c
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@ -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);