[dpdk-dev] [PATCH 4/7] mlx5: fix RX VLAN stripping capability check

[Nelio Laranjeiro]

From: Adrien Mazarguil <adrien.mazarguil at 6wind.com>

A hardware capability check is missing before enabling RX VLAN stripping
during queue setup.

Also, while dev_conf.rxmode.hw_vlan_strip is currently a single bit that
can be stored in priv->hw_vlan_strip directly, it should be interpreted as
a boolean value for safety.

Fixes: f3db9489188a ("mlx5: support Rx VLAN stripping")

Signed-off-by: Adrien Mazarguil <adrien.mazarguil at 6wind.com>
---
 drivers/net/mlx5/mlx5_rxq.c  | 3 ++-
 drivers/net/mlx5/mlx5_vlan.c | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index 469ba98..0bcf55b 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -1222,7 +1222,8 @@ rxq_setup(struct rte_eth_dev *dev, struct rxq *rxq, uint16_t desc,
 	DEBUG("priv->device_attr.max_sge is %d",
 	      priv->device_attr.max_sge);
 	/* Configure VLAN stripping. */
-	tmpl.vlan_strip = dev->data->dev_conf.rxmode.hw_vlan_strip;
+	tmpl.vlan_strip = (priv->hw_vlan_strip &&
+			   !!dev->data->dev_conf.rxmode.hw_vlan_strip);
 	attr.wq = (struct ibv_exp_wq_init_attr){
 		.wq_context = NULL, /* Could be useful in the future. */
 		.wq_type = IBV_EXP_WQT_RQ,
diff --git a/drivers/net/mlx5/mlx5_vlan.c b/drivers/net/mlx5/mlx5_vlan.c
index ea7af1e..ff40538 100644
--- a/drivers/net/mlx5/mlx5_vlan.c
+++ b/drivers/net/mlx5/mlx5_vlan.c
@@ -218,7 +218,7 @@ mlx5_vlan_offload_set(struct rte_eth_dev *dev, int mask)
 	unsigned int i;
 
 	if (mask & ETH_VLAN_STRIP_MASK) {
-		int hw_vlan_strip = dev->data->dev_conf.rxmode.hw_vlan_strip;
+		int hw_vlan_strip = !!dev->data->dev_conf.rxmode.hw_vlan_strip;
 
 		if (!priv->hw_vlan_strip) {
 			ERROR("VLAN stripping is not supported");
-- 
2.1.4