[dpdk-stable] [PATCH] crypto/mlx5: fix indirect mkey cleaning

[Michael Baum <michaelba@nvidia.com>]

The driver creates an indirect mkey per entry in the queue to manage the
crypto operation using the BSF fields.

The indirect mkeys were never released neither while error occurs in the
creation phase nor when the queue is released.

Clean the indirect mkeys in the above cases.

Fixes: c2a42d19d967 ("crypto/mlx5: add WQE set initialization")
Cc: stable@dpdk.org

Signed-off-by: Michael Baum <michaelba@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
---
 drivers/crypto/mlx5/mlx5_crypto.c | 39 ++++++++++++++++++++++++-------
 1 file changed, 30 insertions(+), 9 deletions(-)

diff --git a/drivers/crypto/mlx5/mlx5_crypto.c b/drivers/crypto/mlx5/mlx5_crypto.c
index b3d5200ca3..1cc6720e44 100644
--- a/drivers/crypto/mlx5/mlx5_crypto.c
+++ b/drivers/crypto/mlx5/mlx5_crypto.c
@@ -252,11 +252,21 @@ mlx5_crypto_sym_session_clear(struct rte_cryptodev *dev,
 	DRV_LOG(DEBUG, "Session %p was cleared.", spriv);
 }
 
-static int
-mlx5_crypto_queue_pair_release(struct rte_cryptodev *dev, uint16_t qp_id)
+static void
+mlx5_crypto_indirect_mkeys_release(struct mlx5_crypto_qp *qp, uint16_t n)
 {
-	struct mlx5_crypto_qp *qp = dev->data->queue_pairs[qp_id];
+	uint16_t i;
+
+	for (i = 0; i < n; i++)
+		if (qp->mkey[i])
+			claim_zero(mlx5_devx_cmd_destroy(qp->mkey[i]));
+}
 
+static void
+mlx5_crypto_qp_release(struct mlx5_crypto_qp *qp)
+{
+	if (qp == NULL)
+		return;
 	if (qp->qp_obj != NULL)
 		claim_zero(mlx5_devx_cmd_destroy(qp->qp_obj));
 	if (qp->umem_obj != NULL)
@@ -266,6 +276,15 @@ mlx5_crypto_queue_pair_release(struct rte_cryptodev *dev, uint16_t qp_id)
 	mlx5_mr_btree_free(&qp->mr_ctrl.cache_bh);
 	mlx5_devx_cq_destroy(&qp->cq_obj);
 	rte_free(qp);
+}
+
+static int
+mlx5_crypto_queue_pair_release(struct rte_cryptodev *dev, uint16_t qp_id)
+{
+	struct mlx5_crypto_qp *qp = dev->data->queue_pairs[qp_id];
+
+	mlx5_crypto_indirect_mkeys_release(qp, qp->entries_n);
+	mlx5_crypto_qp_release(qp);
 	dev->data->queue_pairs[qp_id] = NULL;
 	return 0;
 }
@@ -632,12 +651,14 @@ mlx5_crypto_indirect_mkeys_prepare(struct mlx5_crypto_priv *priv,
 	   i < qp->entries_n; i++, umr = RTE_PTR_ADD(umr, priv->wqe_set_size)) {
 		attr.klm_array = (struct mlx5_klm *)&umr->kseg[0];
 		qp->mkey[i] = mlx5_devx_cmd_mkey_create(priv->ctx, &attr);
-		if (!qp->mkey[i]) {
-			DRV_LOG(ERR, "Failed to allocate indirect mkey.");
-			return -1;
-		}
+		if (!qp->mkey[i])
+			goto error;
 	}
 	return 0;
+error:
+	DRV_LOG(ERR, "Failed to allocate indirect mkey.");
+	mlx5_crypto_indirect_mkeys_release(qp, i);
+	return -1;
 }
 
 static int
@@ -701,7 +722,7 @@ mlx5_crypto_queue_pair_setup(struct rte_cryptodev *dev, uint16_t qp_id,
 	attr.uar_index = mlx5_os_get_devx_uar_page_id(priv->uar);
 	attr.cqn = qp->cq_obj.cq->id;
 	attr.log_page_size = rte_log2_u32(sysconf(_SC_PAGESIZE));
-	attr.rq_size =  0;
+	attr.rq_size = 0;
 	attr.sq_size = RTE_BIT32(log_nb_desc);
 	attr.dbr_umem_valid = 1;
 	attr.wq_umem_id = qp->umem_obj->umem_id;
@@ -730,7 +751,7 @@ mlx5_crypto_queue_pair_setup(struct rte_cryptodev *dev, uint16_t qp_id,
 	dev->data->queue_pairs[qp_id] = qp;
 	return 0;
 error:
-	mlx5_crypto_queue_pair_release(dev, qp_id);
+	mlx5_crypto_qp_release(qp);
 	return -1;
 }
 
-- 
2.25.1