From: Greg Rose <gregory.v.rose@intel.com>
Date: Fri, 22 Jan 2010 22:47:00 +0000 (+0000)
Subject: ixgbevf: Take action when the PF notifies the VF it is resetting.
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=a9ee25a2b87c8077042ce23d3231f67f026719b0;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git

ixgbevf: Take action when the PF notifies the VF it is resetting.

When the VF driver gets a control message from the PF that indicates the
PF is about to reset or go down we schedule the watchdog timer so that
it will detect the PF has gone offline and take appropriate action.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ixgbevf/ixgbevf_main.c b/drivers/net/ixgbevf/ixgbevf_main.c
index 39544afdc57f..bd2fd4608ed7 100644
--- a/drivers/net/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ixgbevf/ixgbevf_main.c
@@ -956,10 +956,17 @@ static irqreturn_t ixgbevf_msix_mbx(int irq, void *data)
 	struct ixgbevf_adapter *adapter = netdev_priv(netdev);
 	struct ixgbe_hw *hw = &adapter->hw;
 	u32 eicr;
+	u32 msg;
 
 	eicr = IXGBE_READ_REG(hw, IXGBE_VTEICS);
 	IXGBE_WRITE_REG(hw, IXGBE_VTEICR, eicr);
 
+	hw->mbx.ops.read(hw, &msg, 1);
+
+	if ((msg & IXGBE_MBVFICR_VFREQ_MASK) == IXGBE_PF_CONTROL_MSG)
+		mod_timer(&adapter->watchdog_timer,
+			  round_jiffies(jiffies + 10));
+
 	return IRQ_HANDLED;
 }