[PATCH v3] net/iavf: revert fix VLAN insertion

[Yiding Zhou <yidingx.zhou@intel.com>]

The vector Tx path does not support VLAN insertion via the L2TAG2 field,
but the scalar path supports. The previous commit was to force to select
scalar path as soon as kernel driver requests to use L2TAG2.

That logic is incorrect. Because other case like VLAN offloading not
required but scalar path selected would have a significant performance drop
. Therefore the following commit needs to revert.

commit 0d58caa7d6d1 ("net/iavf: fix VLAN insertion")

After this commit reverted, the user can select scalar path with the
parameter '--force-max-simd-bitwidth' if necessary.

Fixes: 0d58caa7d6d1 ("net/iavf: fix VLAN insertion")

Signed-off-by: Yiding Zhou <yidingx.zhou@intel.com>
---
v3: rebase and change commit log
---
 drivers/net/iavf/iavf_rxtx_vec_common.h | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/net/iavf/iavf_rxtx_vec_common.h b/drivers/net/iavf/iavf_rxtx_vec_common.h
index 4ab22c6b2b..a59cb2ceee 100644
--- a/drivers/net/iavf/iavf_rxtx_vec_common.h
+++ b/drivers/net/iavf/iavf_rxtx_vec_common.h
@@ -253,9 +253,6 @@ 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