[dpdk-dev] [PATCH 2/2] net/mlx5: fix jump table leak issue

[Suanming Mou <suanmingm@mellanox.com>]

Currently, when translate jump action, the table reference will be
increased all the time. But when release the jump action, the table
resource reference will only be decreased when jump action is released.
It means for jump action which was referenced more than one time, the
increased table reference only decrease one time when jump action is
released.

Add table release when the jump action was not new created.

Fixes: 684b9a1b1f5c ("net/mlx5: support jump action")
Cc: stable@dpdk.org

Signed-off-by: Suanming Mou <suanmingm@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 0676b6f..e87e30f 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -73,6 +73,10 @@
 	uint32_t attr;
 };
 
+static int
+flow_dv_tbl_resource_release(struct rte_eth_dev *dev,
+			     struct mlx5_flow_tbl_resource *tbl);
+
 /**
  * Initialize flow attributes structure according to flow items' types.
  *
@@ -2530,6 +2534,8 @@ struct field_modify_info modify_tcp[] = {
 		DRV_LOG(DEBUG, "new jump table resource %p: refcnt %d++",
 			(void *)&tbl_data->jump, cnt);
 	} else {
+		/* old jump should not make the table ref++. */
+		flow_dv_tbl_resource_release(dev, &tbl_data->tbl);
 		MLX5_ASSERT(tbl_data->jump.action);
 		DRV_LOG(DEBUG, "existed jump table resource %p: refcnt %d++",
 			(void *)&tbl_data->jump, cnt);
-- 
1.8.3.1