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Commit 1e72bfc3 authored by Greg Rose's avatar Greg Rose Committed by Jeff Kirsher
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ixgbevf: Synch out of tree and in tree mailbox interrupt handlers 



The out of tree driver and the in kernel driver should use the same
interrupt handling logic for mailbox interrupts.  The difference in
the handlers was causing dissimilar behavior between the two drivers
complicating debug and trouble shooting.

Signed-off-by: default avatarGreg Rose <gregory.v.rose@intel.com>
Tested-by: default avatarSibai Li <sibai.li@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent ec718254

drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c

+25 −2
Original line number Diff line number Diff line
@@ -750,12 +750,35 @@ static void ixgbevf_set_itr(struct ixgbevf_q_vector *q_vector) 
static irqreturn_t ixgbevf_msix_other(int irq, void *data)

{

	struct ixgbevf_adapter *adapter = data;

	struct pci_dev *pdev = adapter->pdev;

	struct ixgbe_hw *hw = &adapter->hw;

	u32 msg;

	bool got_ack = false;



	hw->mac.get_link_status = 1;

	if (!hw->mbx.ops.check_for_ack(hw))

		got_ack = true;



	if (!test_bit(__IXGBEVF_DOWN, &adapter->state))

		mod_timer(&adapter->watchdog_timer, jiffies);

	if (!hw->mbx.ops.check_for_msg(hw)) {

		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 + 1));



		if (msg & IXGBE_VT_MSGTYPE_NACK)

			dev_info(&pdev->dev,

				 "Last Request of type %2.2x to PF Nacked\n",

				 msg & 0xFF);

		hw->mbx.v2p_mailbox |= IXGBE_VFMAILBOX_PFSTS;

	}



	/* checking for the ack clears the PFACK bit.  Place

	 * it back in the v2p_mailbox cache so that anyone

	 * polling for an ack will not miss it

	 */

	if (got_ack)

		hw->mbx.v2p_mailbox |= IXGBE_VFMAILBOX_PFACK;



	IXGBE_WRITE_REG(hw, IXGBE_VTEIMS, adapter->eims_other);