[PATCH v2] net/mlx5: fix the drop action memory leak

[Bing Zhao <bingz@nvidia.com>]

In DV mode, when quitting an application, the default drop action
and its resources should be released. The Devx action for the TIR
was not destroyed and it would cause 80B memory leak.

With this commit, in DV mode, the action should be destroyed in the
mlx5_devx_drop_action_destroy() explicitly.

Bugzilla ID: 1192
Bugzilla ID: 1255

Fixes: bc5bee028ebc ("net/mlx5: create drop queue using DevX")
Cc: stable@dpdk.org

Reported-by: David Marchand <david.marchand@redhat.com>
Reported-by: Mário Kuka<kuka@cesnet.cz>
Signed-off-by: Bing Zhao <bingz@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
---
v2: added the reporter
---
 drivers/net/mlx5/mlx5_devx.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_devx.c b/drivers/net/mlx5/mlx5_devx.c
index d286cfe864..9fa400fc48 100644
--- a/drivers/net/mlx5/mlx5_devx.c
+++ b/drivers/net/mlx5/mlx5_devx.c
@@ -1134,6 +1134,10 @@ mlx5_devx_drop_action_destroy(struct rte_eth_dev *dev)
 	struct mlx5_priv *priv = dev->data->dev_private;
 	struct mlx5_hrxq *hrxq = priv->drop_queue.hrxq;
 
+#if defined(HAVE_IBV_FLOW_DV_SUPPORT) || !defined(HAVE_INFINIBAND_VERBS_H)
+	if (hrxq->action != NULL)
+		mlx5_flow_os_destroy_flow_action(hrxq->action);
+#endif
 	if (hrxq->tir != NULL)
 		mlx5_devx_tir_destroy(hrxq);
 	if (hrxq->ind_table->ind_table != NULL)
-- 
2.34.1