[dpdk-dev] [PATCH 4/4] net/hns3: fix the return value of setting VLAN offload

["Wei Hu (Xavier)" <huwei013@chinasoftinc.com>]

From: Chengwen Feng <fengchengwen@huawei.com>

Currently, the '.vlan_offload_set' ops implementation function named
hns3vf_vlan_offload_set always return 0 in hns3 VF PMD driver.

This patch fixes it with the following modification in the function
named hns3vf_vlan_offload_set.
1. Avoid setting hardware configuration and return -EIO during resetting.
2. Add the return value dectection process for calling internal static
   function named hns3vf_en_hw_strip_rxvtag.

Fixes: a5475d61fa34 ("net/hns3: support VF")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
---
 drivers/net/hns3/hns3_ethdev_vf.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c
index e0c40a10e..8be743d19 100644
--- a/drivers/net/hns3/hns3_ethdev_vf.c
+++ b/drivers/net/hns3/hns3_ethdev_vf.c
@@ -1150,6 +1150,13 @@ hns3vf_vlan_offload_set(struct rte_eth_dev *dev, int mask)
 	struct hns3_hw *hw = HNS3_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	struct rte_eth_conf *dev_conf = &dev->data->dev_conf;
 	unsigned int tmp_mask;
+	int ret = 0;
+
+	if (rte_atomic16_read(&hw->reset.resetting)) {
+		hns3_err(hw, "vf set vlan offload failed during resetting, "
+			     "mask = 0x%x", mask);
+		return -EIO;
+	}
 
 	tmp_mask = (unsigned int)mask;
 	/* Vlan stripping setting */
@@ -1157,13 +1164,13 @@ hns3vf_vlan_offload_set(struct rte_eth_dev *dev, int mask)
 		rte_spinlock_lock(&hw->lock);
 		/* Enable or disable VLAN stripping */
 		if (dev_conf->rxmode.offloads & DEV_RX_OFFLOAD_VLAN_STRIP)
-			hns3vf_en_hw_strip_rxvtag(hw, true);
+			ret = hns3vf_en_hw_strip_rxvtag(hw, true);
 		else
-			hns3vf_en_hw_strip_rxvtag(hw, false);
+			ret = hns3vf_en_hw_strip_rxvtag(hw, false);
 		rte_spinlock_unlock(&hw->lock);
 	}
 
-	return 0;
+	return ret;
 }
 
 static int
-- 
2.23.0