Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit e6bdb6fe authored by Nick Nunley's avatar Nick Nunley Committed by David S. Miller
Browse files

igb: only support SRRCTL_DROP_EN when using multiple queues 



The SRRCTL.DROP_EN bit should only be set when we are supporting
multiple queues. This bit is meant to prevent head of line blocking
and is unnecessary in the single queue case.

Signed-off-by: default avatarNicholas Nunley <nicholasx.d.nunley@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent abe1c363

drivers/net/igb/igb_main.c

+3 −0
Original line number Diff line number Diff line
@@ -2595,6 +2595,9 @@ void igb_configure_rx_ring(struct igb_adapter *adapter, 
		         E1000_SRRCTL_BSIZEPKT_SHIFT;

		srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF;

	}

	/* Only set Drop Enable if we are supporting multiple queues */

	if (adapter->vfs_allocated_count || adapter->num_rx_queues > 1)

		srrctl |= E1000_SRRCTL_DROP_EN;



	wr32(E1000_SRRCTL(reg_idx), srrctl);