vdpa/mlx5: recreate a virtq becoming enabled

[dpdk.git] / drivers / vdpa / mlx5 / mlx5_vdpa.h

diff --git a/drivers/vdpa/mlx5/mlx5_vdpa.h b/drivers/vdpa/mlx5/mlx5_vdpa.h
index 0edd688..fcc216a 100644 (file)
--- a/drivers/vdpa/mlx5/mlx5_vdpa.h
+++ b/drivers/vdpa/mlx5/mlx5_vdpa.h
@@ -127,6 +127,24 @@ struct mlx5_vdpa_priv {
        struct mlx5_vdpa_virtq virtqs[];
 };
 
+/*
+ * Check whether virtq is for traffic receive.
+ * According to VIRTIO_NET Spec the virtqueues index identity its type by:
+ * 0 receiveq1
+ * 1 transmitq1
+ * ...
+ * 2(N-1) receiveqN
+ * 2(N-1)+1 transmitqN
+ * 2N controlq
+ */
+static inline uint8_t
+is_virtq_recvq(int virtq_index, int nr_vring)
+{
+       if (virtq_index % 2 == 0 && virtq_index != nr_vring - 1)
+               return 1;
+       return 0;
+}
+
 /**
  * Release all the prepared memory regions and all their related resources.
  *
@@ -223,15 +241,17 @@ int mlx5_vdpa_virtqs_prepare(struct mlx5_vdpa_priv *priv);
 /**
  * Enable\Disable virtq..
  *
- * @param[in] virtq
- *   The vdpa driver private virtq structure.
+ * @param[in] priv
+ *   The vdpa driver private structure.
+ * @param[in] index
+ *   The virtq index.
  * @param[in] enable
  *   Set to enable, otherwise disable.
  *
  * @return
  *   0 on success, a negative value otherwise.
  */
-int mlx5_vdpa_virtq_enable(struct mlx5_vdpa_virtq *virtq, int enable);
+int mlx5_vdpa_virtq_enable(struct mlx5_vdpa_priv *priv, int index, int enable);
 
 /**
  * Unset steering and release all its related resources- stop traffic.
@@ -239,7 +259,18 @@ int mlx5_vdpa_virtq_enable(struct mlx5_vdpa_virtq *virtq, int enable);
  * @param[in] priv
  *   The vdpa driver private structure.
  */
-int mlx5_vdpa_steer_unset(struct mlx5_vdpa_priv *priv);
+void mlx5_vdpa_steer_unset(struct mlx5_vdpa_priv *priv);
+
+/**
+ * Update steering according to the received queues status.
+ *
+ * @param[in] priv
+ *   The vdpa driver private structure.
+ *
+ * @return
+ *   0 on success, a negative value otherwise.
+ */
+int mlx5_vdpa_steer_update(struct mlx5_vdpa_priv *priv);
 
 /**
  * Setup steering and all its related resources to enable RSS traffic from the