From: Zhirun Yan <zhirun.yan@intel.com>
Date: Thu, 13 Dec 2018 15:46:45 +0000 (+0000)
Subject: net/i40e: clear VF reset flags after reset
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=0eaa1f8c75311b96d269a0195b80e80d6c27e83c;p=dpdk.git

net/i40e: clear VF reset flags after reset

The reset flags vf->vf_reset and vf->pend_msg are set when VF received
VIRTCHNL_EVENT_RESET_IMPENDING. So after resetting done, these flags
should be cleared.

Fixes: 8cacf78469a7 ("net/i40e: fix VF initialization error")
Cc: stable@dpdk.org

Signed-off-by: Zhirun Yan <zhirun.yan@intel.com>
Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
---

diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index 05dc6596b2..100e71cc82 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -1080,9 +1080,11 @@ i40evf_enable_irq0(struct i40e_hw *hw)
 }
 
 static int
-i40evf_check_vf_reset_done(struct i40e_hw *hw)
+i40evf_check_vf_reset_done(struct rte_eth_dev *dev)
 {
 	int i, reset;
+	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
 
 	for (i = 0; i < MAX_RESET_WAIT_CNT; i++) {
 		reset = I40E_READ_REG(hw, I40E_VFGEN_RSTAT) &
@@ -1097,12 +1099,16 @@ i40evf_check_vf_reset_done(struct i40e_hw *hw)
 	if (i >= MAX_RESET_WAIT_CNT)
 		return -1;
 
+	vf->vf_reset = false;
+	vf->pend_msg &= ~PFMSG_RESET_IMPENDING;
+
 	return 0;
 }
 static int
-i40evf_reset_vf(struct i40e_hw *hw)
+i40evf_reset_vf(struct rte_eth_dev *dev)
 {
 	int ret;
+	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 
 	if (i40e_vf_reset(hw) != I40E_SUCCESS) {
 		PMD_INIT_LOG(ERR, "Reset VF NIC failed");
@@ -1119,7 +1125,7 @@ i40evf_reset_vf(struct i40e_hw *hw)
 	  */
 	rte_delay_ms(200);
 
-	ret = i40evf_check_vf_reset_done(hw);
+	ret = i40evf_check_vf_reset_done(dev);
 	if (ret) {
 		PMD_INIT_LOG(ERR, "VF is still resetting");
 		return ret;
@@ -1145,7 +1151,7 @@ i40evf_init_vf(struct rte_eth_dev *dev)
 		goto err;
 	}
 
-	err = i40evf_check_vf_reset_done(hw);
+	err = i40evf_check_vf_reset_done(dev);
 	if (err)
 		goto err;
 
@@ -1157,7 +1163,7 @@ i40evf_init_vf(struct rte_eth_dev *dev)
 	}
 
 	/* Reset VF and wait until it's complete */
-	if (i40evf_reset_vf(hw)) {
+	if (i40evf_reset_vf(dev)) {
 		PMD_INIT_LOG(ERR, "reset NIC failed");
 		goto err_aq;
 	}
@@ -2257,7 +2263,7 @@ i40evf_dev_close(struct rte_eth_dev *dev)
 	i40evf_dev_promiscuous_disable(dev);
 	i40evf_dev_allmulticast_disable(dev);
 
-	i40evf_reset_vf(hw);
+	i40evf_reset_vf(dev);
 	i40e_shutdown_adminq(hw);
 	i40evf_disable_irq0(hw);
 	rte_eal_alarm_cancel(i40evf_dev_alarm_handler, dev);