[PATCH] net/iavf: fix VLAN insertion

[Yiding Zhou]

When the driver tells the VF to insert VLAN tag using the L2TAG2 field,
vector Tx path does not use Tx context descriptor and would cause VLAN tag
inserted into the wrong location.

This commit is to fix issue by using normal Tx path to handle L2TAG2 case.

Fixes: 3aa957338503 ("net/iavf: fix VLAN insert")
Cc: stable at dpdk.org

Signed-off-by: Yiding Zhou <yidingx.zhou at intel.com>
---
 drivers/net/iavf/iavf_rxtx_vec_common.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/iavf/iavf_rxtx_vec_common.h b/drivers/net/iavf/iavf_rxtx_vec_common.h
index a59cb2ceee..4ab22c6b2b 100644
--- a/drivers/net/iavf/iavf_rxtx_vec_common.h
+++ b/drivers/net/iavf/iavf_rxtx_vec_common.h
@@ -253,6 +253,9 @@ iavf_tx_vec_queue_default(struct iavf_tx_queue *txq)
 	if (txq->offloads & IAVF_TX_NO_VECTOR_FLAGS)
 		return -1;
 
+	if (txq->vlan_flag == IAVF_TX_FLAGS_VLAN_TAG_LOC_L2TAG2)
+		return -1;
+
 	if (txq->offloads & IAVF_TX_VECTOR_OFFLOAD)
 		return IAVF_VECTOR_OFFLOAD_PATH;
 
-- 
2.34.1