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

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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>
This commit is contained in:
Greg Rose 2010-01-22 22:47:00 +00:00 committed by David S. Miller
parent 767081adbd
commit a9ee25a2b8
1 changed files with 7 additions and 0 deletions
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7
drivers/net/ixgbevf/ixgbevf_main.c
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@ -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;
}