[PATCH v4 1/2] ethdev: add API to check if queue is valid

[Dengdui Huang]

The API rte_eth_dev_is_valid_rxq/txq which
is used to check if Rx/Tx queue is valid.
If the queue has been setup, it is considered valid.

Signed-off-by: Dengdui Huang <huangdengdui at huawei.com>
---
 doc/guides/rel_notes/release_23_07.rst |  6 ++++
 lib/ethdev/rte_ethdev.c                | 22 +++++++++++++++
 lib/ethdev/rte_ethdev.h                | 38 ++++++++++++++++++++++++++
 lib/ethdev/version.map                 |  2 ++
 4 files changed, 68 insertions(+)

diff --git a/doc/guides/rel_notes/release_23_07.rst b/doc/guides/rel_notes/release_23_07.rst
index 0d3cada5d0..1332fa3a5a 100644
--- a/doc/guides/rel_notes/release_23_07.rst
+++ b/doc/guides/rel_notes/release_23_07.rst
@@ -83,6 +83,12 @@ New Features
   for new capability registers, large passthrough BAR and some
   performance enhancements for UPT.
 
+* **Added ethdev Rx/Tx queue ID check API.**
+
+  Added ethdev Rx/Tx queue ID check API which provides functions
+  for check if Rx/Tx queue is valid. If the queue has been setup,
+  it is considered valid.
+
 
 Removed Items
 -------------
diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index d46e74504e..a134928c8a 100644
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -771,6 +771,28 @@ eth_dev_validate_tx_queue(const struct rte_eth_dev *dev, uint16_t tx_queue_id)
 	return 0;
 }
 
+int
+rte_eth_dev_is_valid_rxq(uint16_t port_id, uint16_t queue_id)
+{
+	struct rte_eth_dev *dev;
+
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+	dev = &rte_eth_devices[port_id];
+
+	return eth_dev_validate_rx_queue(dev, queue_id);
+}
+
+int
+rte_eth_dev_is_valid_txq(uint16_t port_id, uint16_t queue_id)
+{
+	struct rte_eth_dev *dev;
+
+	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
+	dev = &rte_eth_devices[port_id];
+
+	return eth_dev_validate_tx_queue(dev, queue_id);
+}
+
 int
 rte_eth_dev_rx_queue_start(uint16_t port_id, uint16_t rx_queue_id)
 {
diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
index 9932413c33..4ef803c244 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -2666,6 +2666,44 @@ int rte_eth_dev_socket_id(uint16_t port_id);
  */
 int rte_eth_dev_is_valid_port(uint16_t port_id);
 
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change, or be removed, without prior notice
+ *
+ * Check if Rx queue is valid. If the queue has been setup,
+ * it is considered valid.
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param queue_id
+ *  The index of the receive queue.
+ * @return
+ *   - -ENODEV: if *port_id* is valid.
+ *   - -EINVAL: if queue is out of range or not been setup.
+ *   - 0 if Rx queue is valid.
+ */
+__rte_experimental
+int rte_eth_dev_is_valid_rxq(uint16_t port_id, uint16_t queue_id);
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change, or be removed, without prior notice
+ *
+ * Check if Tx queue is valid. If the queue has been setup,
+ * it is considered valid.
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @param queue_id
+ *  The index of the transmit queue.
+ * @return
+ *   - -ENODEV: if *port_id* is valid.
+ *   - -EINVAL: if queue is out of range or not been setup.
+ *   - 0 if Tx queue is valid.
+ */
+__rte_experimental
+int rte_eth_dev_is_valid_txq(uint16_t port_id, uint16_t queue_id);
+
 /**
  * Start specified Rx queue of a port. It is used when rx_deferred_start
  * flag of the specified queue is true.
diff --git a/lib/ethdev/version.map b/lib/ethdev/version.map
index 9d418091ef..3aa6bce156 100644
--- a/lib/ethdev/version.map
+++ b/lib/ethdev/version.map
@@ -309,6 +309,8 @@ EXPERIMENTAL {
 	rte_flow_async_action_list_handle_destroy;
 	rte_flow_async_action_list_handle_query_update;
 	rte_flow_async_actions_update;
+	rte_eth_dev_is_valid_rxq;
+	rte_eth_dev_is_valid_txq;
 };
 
 INTERNAL {
-- 
2.33.0