[dpdk-stable] [PATCH] net/mlx5: fix release of jump to queue action

[Ori Kam]

Currenlty the allocation of the jump to QP is done in flow apply,
this results in memory leak.

This patch fixes this issue by moving the allocation and release of the
jump to QP action to the responsiblity of the hrxq.

Fixes: cbb66daa3c85 ("net/mlx5: prepare Direct Verbs for Direct Rule")
Cc: stable at dpdk.org

Signed-off-by: Ori Kam <orika at mellanox.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c |  8 ++------
 drivers/net/mlx5/mlx5_rxq.c     | 20 ++++++++++++++++++++
 drivers/net/mlx5/mlx5_rxtx.h    |  3 +++
 3 files changed, 25 insertions(+), 6 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 3862b26..04ab3d6 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -3651,9 +3651,7 @@ struct field_modify_info modify_tcp[] = {
 					 "cannot get drop hash queue");
 				goto error;
 			}
-			dv->actions[n++] =
-				mlx5_glue->dv_create_flow_action_dest_ibv_qp
-				(dv->hrxq->qp);
+			dv->actions[n++] = dv->hrxq->action;
 		} else if (flow->actions &
 			   (MLX5_FLOW_ACTION_QUEUE | MLX5_FLOW_ACTION_RSS)) {
 			struct mlx5_hrxq *hrxq;
@@ -3678,9 +3676,7 @@ struct field_modify_info modify_tcp[] = {
 				goto error;
 			}
 			dv->hrxq = hrxq;
-			dv->actions[n++] =
-				mlx5_glue->dv_create_flow_action_dest_ibv_qp
-				(dv->hrxq->qp);
+			dv->actions[n++] = dv->hrxq->action;
 		}
 		dv->flow =
 			mlx5_glue->dv_create_flow(dv->matcher->matcher_object,
diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index 8a84b0a..836bec9 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -1864,6 +1864,13 @@ struct mlx5_hrxq *
 	hrxq->rss_key_len = rss_key_len;
 	hrxq->hash_fields = hash_fields;
 	memcpy(hrxq->rss_key, rss_key, rss_key_len);
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+	hrxq->action = mlx5_glue->dv_create_flow_action_dest_ibv_qp(hrxq->qp);
+	if (!hrxq->action) {
+		rte_errno = errno;
+		goto error;
+	}
+#endif
 	rte_atomic32_inc(&hrxq->refcnt);
 	LIST_INSERT_HEAD(&priv->hrxqs, hrxq, next);
 	return hrxq;
@@ -1941,6 +1948,9 @@ struct mlx5_hrxq *
 	if (rte_atomic32_dec_and_test(&hrxq->refcnt)) {
 		claim_zero(mlx5_glue->destroy_qp(hrxq->qp));
 		mlx5_ind_table_ibv_release(dev, hrxq->ind_table);
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+		mlx5_glue->destroy_flow_action(hrxq->action);
+#endif
 		LIST_REMOVE(hrxq, next);
 		rte_free(hrxq);
 		return 0;
@@ -2178,6 +2188,13 @@ struct mlx5_hrxq *
 	}
 	hrxq->ind_table = ind_tbl;
 	hrxq->qp = qp;
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+	hrxq->action = mlx5_glue->dv_create_flow_action_dest_ibv_qp(hrxq->qp);
+	if (!hrxq->action) {
+		rte_errno = errno;
+		goto error;
+	}
+#endif
 	priv->drop_queue.hrxq = hrxq;
 	rte_atomic32_set(&hrxq->refcnt, 1);
 	return hrxq;
@@ -2202,6 +2219,9 @@ struct mlx5_hrxq *
 	if (rte_atomic32_dec_and_test(&hrxq->refcnt)) {
 		claim_zero(mlx5_glue->destroy_qp(hrxq->qp));
 		mlx5_ind_table_ibv_drop_release(dev);
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+		mlx5_glue->destroy_flow_action(hrxq->action);
+#endif
 		rte_free(hrxq);
 		priv->drop_queue.hrxq = NULL;
 	}
diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h
index 5d49892..4339aaf 100644
--- a/drivers/net/mlx5/mlx5_rxtx.h
+++ b/drivers/net/mlx5/mlx5_rxtx.h
@@ -166,6 +166,9 @@ struct mlx5_hrxq {
 	rte_atomic32_t refcnt; /* Reference counter. */
 	struct mlx5_ind_table_ibv *ind_table; /* Indirection table. */
 	struct ibv_qp *qp; /* Verbs queue pair. */
+#ifdef HAVE_IBV_FLOW_DV_SUPPORT
+	void *action; /* DV QP action pointer. */
+#endif
 	uint64_t hash_fields; /* Verbs Hash fields. */
 	uint32_t rss_key_len; /* Hash key length in bytes. */
 	uint8_t rss_key[]; /* Hash key. */
-- 
1.8.3.1