[dpdk-dev] [PATCH v2] net/i40e: solve the failure of vf vlan filtering

[Qiming Chen <chenqiming_huawei@163.com>]

When vf driver port promiscuous is turned on, the vlan filtering function
is invalid.
Through communication with PAE expert, this is a limitation of the i40e
chip. Before adding or removing VLANs, you must first disable unicast
promiscuous or multicast promiscuous, then operate the vlan, and finally
restore unicast promiscuous or multicast promiscuous state.

Signed-off-by: Qiming Chen <chenqiming_huawei@163.com>
---
 drivers/net/i40e/i40e_ethdev_vf.c | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
index 12e69a3233..a099daae6b 100644
--- a/drivers/net/i40e/i40e_ethdev_vf.c
+++ b/drivers/net/i40e/i40e_ethdev_vf.c
@@ -1900,11 +1900,30 @@ static int
 i40evf_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on)
 {
 	int ret;
+	struct rte_eth_conf *dev_conf = &dev->data->dev_conf;
+	struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private);
+	bool promisc_unicast_enabled = vf->promisc_unicast_enabled;
+	bool promisc_multicast_enabled = vf->promisc_multicast_enabled;
 
-	if (on)
+	if (promisc_unicast_enabled)
+		i40evf_dev_promiscuous_disable(dev);
+
+	if (promisc_multicast_enabled)
+		i40evf_dev_allmulticast_disable(dev);
+
+	if (on) {
 		ret = i40evf_add_vlan(dev, vlan_id);
-	else
+		if ((dev_conf->rxmode.offloads & DEV_RX_OFFLOAD_VLAN_STRIP) == 0)
+			i40evf_disable_vlan_strip(dev);
+	} else {
 		ret = i40evf_del_vlan(dev,vlan_id);
+	}
+
+	if (promisc_unicast_enabled)
+		i40evf_dev_promiscuous_enable(dev);
+
+	if (promisc_multicast_enabled)
+		i40evf_dev_allmulticast_enable(dev);
 
 	return ret;
 }
-- 
2.30.1.windows.1