ixgbe: Allow Priority Flow Control settings to survive a device reset

When changing DCB parameters, ixgbe needs to have the MAC reset.  The way
the flow control code is setup today, PFC will be disabled on a reset.
This patch adds a new flow control type for PFC, and then has the netlink
layer take care of toggling which type of flow control to enable.

Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 3 deletions

diff --git a/drivers/net/ixgbe/ixgbe_dcb_82599.c b/drivers/net/ixgbe/ixgbe_dcb_82599.c
index adcbac422634..470b676c1dae 100644
--- a/drivers/net/ixgbe/ixgbe_dcb_82599.c
+++ b/drivers/net/ixgbe/ixgbe_dcb_82599.c
@@ -299,9 +299,6 @@ s32 ixgbe_dcb_config_pfc_82599(struct ixgbe_hw *hw,
                 goto out;
         }
 
-        /* PFC is mutually exclusive with link flow control */
-        hw->fc.current_mode = ixgbe_fc_none;
-
         /* Configure PFC Tx thresholds per TC */
         for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
                 /* Config and remember Tx */