diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c
index 369b698..96ad4c6 100644
--- a/drivers/net/mlx5/mlx5.c
+++ b/drivers/net/mlx5/mlx5.c
@@ -312,6 +312,7 @@ struct mlx5_dev_spawn_data {
 mlx5_alloc_shared_dv(struct mlx5_priv *priv)
 {
 	struct mlx5_ibv_shared *sh = priv->sh;
+	pthread_mutexattr_t mattr;
 	int err = 0;
 	void *ns;
 
@@ -336,6 +337,10 @@ struct mlx5_dev_spawn_data {
 		err = errno;
 		goto error;
 	}
+	pthread_mutexattr_init(&mattr);
+	pthread_mutexattr_settype(&mattr, PTHREAD_MUTEX_RECURSIVE);
+	pthread_mutex_init(&sh->dv_mutex, &mattr);
+	pthread_mutexattr_destroy(&mattr);
 	sh->tx_ns = ns;
 	sh->dv_refcnt++;
 	priv->dv_shared = 1;
@@ -381,6 +386,7 @@ struct mlx5_dev_spawn_data {
 		mlx5dv_dr_destroy_ns(sh->tx_ns);
 		sh->tx_ns = NULL;
 	}
+	pthread_mutex_destroy(&sh->dv_mutex);
 }
 #endif
 
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index e67227f..4f6c1b7 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -223,6 +223,7 @@ struct mlx5_ibv_shared {
 	char ibdev_path[IBV_SYSFS_PATH_MAX]; /* IB device path for secondary */
 	struct ibv_device_attr_ex device_attr; /* Device properties. */
 	/* Shared DV/DR flow data section. */
+	pthread_mutex_t dv_mutex; /* DV context mutex. */
 	uint32_t dv_refcnt; /* DV/DR data reference counter. */
 	void *rx_ns; /* RX Direct Rules name space handle. */
 	struct mlx5_flow_tbl_resource rx_tbl[MLX5_MAX_TABLES];
diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 4912fc8..737011a 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -125,6 +125,45 @@ struct field_modify_info modify_tcp[] = {
 };
 
 /**
+ * Acquire the synchronizing object to protect multithreaded access
+ * to shared dv context. Lock occurs only if context is actually
+ * shared, i.e. we have multiport IB device and representors are
+ * created.
+ *
+ * @param[in] dev
+ *   Pointer to the rte_eth_dev structure.
+ */
+static void
+flow_d_shared_lock(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_ibv_shared *sh = priv->sh;
+
+	if (sh->dv_refcnt > 1) {
+		int ret;
+
+		ret = pthread_mutex_lock(&sh->dv_mutex);
+		assert(!ret);
+		(void)ret;
+	}
+}
+
+static void
+flow_d_shared_unlock(struct rte_eth_dev *dev)
+{
+	struct mlx5_priv *priv = dev->data->dev_private;
+	struct mlx5_ibv_shared *sh = priv->sh;
+
+	if (sh->dv_refcnt > 1) {
+		int ret;
+
+		ret = pthread_mutex_unlock(&sh->dv_mutex);
+		assert(!ret);
+		(void)ret;
+	}
+}
+
+/**
  * Convert modify-header action to DV specification.
  *
  * @param[in] item
@@ -3958,14 +3997,70 @@ struct field_modify_info modify_tcp[] = {
 	return ret;
 }
 
+/*
+ * Mutex-protected thunk to flow_dv_translate().
+ */
+static int
+flow_d_translate(struct rte_eth_dev *dev,
+		 struct mlx5_flow *dev_flow,
+		 const struct rte_flow_attr *attr,
+		 const struct rte_flow_item items[],
+		 const struct rte_flow_action actions[],
+		 struct rte_flow_error *error)
+{
+	int ret;
+
+	flow_d_shared_lock(dev);
+	ret = flow_dv_translate(dev, dev_flow, attr, items, actions, error);
+	flow_d_shared_unlock(dev);
+	return ret;
+}
+
+/*
+ * Mutex-protected thunk to flow_dv_apply().
+ */
+static int
+flow_d_apply(struct rte_eth_dev *dev,
+	     struct rte_flow *flow,
+	     struct rte_flow_error *error)
+{
+	int ret;
+
+	flow_d_shared_lock(dev);
+	ret = flow_dv_apply(dev, flow, error);
+	flow_d_shared_unlock(dev);
+	return ret;
+}
+
+/*
+ * Mutex-protected thunk to flow_dv_remove().
+ */
+static void
+flow_d_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
+{
+	flow_d_shared_lock(dev);
+	flow_dv_remove(dev, flow);
+	flow_d_shared_unlock(dev);
+}
+
+/*
+ * Mutex-protected thunk to flow_dv_destroy().
+ */
+static void
+flow_d_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
+{
+	flow_d_shared_lock(dev);
+	flow_dv_destroy(dev, flow);
+	flow_d_shared_unlock(dev);
+}
 
 const struct mlx5_flow_driver_ops mlx5_flow_dv_drv_ops = {
 	.validate = flow_dv_validate,
 	.prepare = flow_dv_prepare,
-	.translate = flow_dv_translate,
-	.apply = flow_dv_apply,
-	.remove = flow_dv_remove,
-	.destroy = flow_dv_destroy,
+	.translate = flow_d_translate,
+	.apply = flow_d_apply,
+	.remove = flow_d_remove,
+	.destroy = flow_d_destroy,
 	.query = flow_dv_query,
 };
 
