[v2,2/4] net/mlx5: fix missing validation of null pointer

  Function mlx5_rxq_ibv_release() is called in several places.
Before each call except one, the input parameter is validated to make
sure it is not null.

This patch adds the missing validation where it is missing.

Fixes: af4f09f28294 ("net/mlx5: prefix all functions with mlx5")
Cc: stable@dpdk.org

Signed-off-by: Dekel Peled <dekelp@mellanox.com>
---
 drivers/net/mlx5/mlx5_rxq.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
  

> On May 2, 2019, at 8:01 AM, Dekel Peled <dekelp@mellanox.com> wrote:
> 
> Function mlx5_rxq_ibv_release() is called in several places.
> Before each call except one, the input parameter is validated to make
> sure it is not null.
> 
> This patch adds the missing validation where it is missing.
> 
> Fixes: af4f09f28294 ("net/mlx5: prefix all functions with mlx5")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Dekel Peled <dekelp@mellanox.com>
> ---
> drivers/net/mlx5/mlx5_rxq.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
> index db8c340..c9c2a14 100644
> --- a/drivers/net/mlx5/mlx5_rxq.c
> +++ b/drivers/net/mlx5/mlx5_rxq.c
> @@ -617,7 +617,8 @@
> 		 */
> 		rxq_data = (*priv->rxqs)[i];
> 		rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
> -		mlx5_rxq_ibv_release(rxq_ctrl->ibv);
> +		if (rxq_ctrl->ibv)
> +			mlx5_rxq_ibv_release(rxq_ctrl->ibv);

Please take care of two more things.

1) In mlx5_rx_intr_disable(), 
mlx5_rxq_ibv_get() isn't paired with mlx5_rxq_ibv_release()
This would need a separate patch.

2) In mlx5_rx_intr_vec_disable()
Please fix the comment having the old name - priv_rx_intr_vec_enable().
This should be mlx5_rx_intr_vec_enable()
No need to have a separate patch. You can fix it in this patch.

With the change,
Acked-by: Yongseok Koh <yskoh@mellanox.com>


> 	}
> free:
> 	rte_intr_free_epoll_fd(intr_handle);
> -- 
> 1.8.3.1
>