[dpdk-dev] [PATCH 1/3] ether: Add API to support administrative link up and down

[Ouyang Changchun]

This patch addes API to support administrative link up and down.

Signed-off-by: Ouyang Changchun <changchun.ouyang at intel.com>
---
 lib/librte_ether/rte_ethdev.c | 38 ++++++++++++++++++++++++++++++++++++++
 lib/librte_ether/rte_ethdev.h | 34 ++++++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+)

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 0ddedfb..06a0896 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -796,6 +796,44 @@ rte_eth_dev_stop(uint8_t port_id)
 	(*dev->dev_ops->dev_stop)(dev);
 }
 
+int
+rte_eth_dev_admin_link_up(uint8_t port_id)
+{
+	struct rte_eth_dev *dev;
+
+	/* This function is only safe when called from the primary process
+	 * in a multi-process setup*/
+	PROC_PRIMARY_OR_ERR_RET(-E_RTE_SECONDARY);
+
+	if (port_id >= nb_ports) {
+		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
+		return (-EINVAL);
+	}
+	dev = &rte_eth_devices[port_id];
+
+	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_admin_link_up, -ENOTSUP);
+	return (*dev->dev_ops->dev_admin_link_up)(dev);
+}
+
+int
+rte_eth_dev_admin_link_down(uint8_t port_id)
+{
+	struct rte_eth_dev *dev;
+
+	/* This function is only safe when called from the primary process
+	 * in a multi-process setup*/
+	PROC_PRIMARY_OR_ERR_RET(-E_RTE_SECONDARY);
+
+	if (port_id >= nb_ports) {
+		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
+		return (-EINVAL);
+	}
+	dev = &rte_eth_devices[port_id];
+
+	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_admin_link_down, -ENOTSUP);
+	return (*dev->dev_ops->dev_admin_link_down)(dev);
+}
+
 void
 rte_eth_dev_close(uint8_t port_id)
 {
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index 2be6e4f..d33ff93 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -891,6 +891,12 @@ typedef int  (*eth_dev_start_t)(struct rte_eth_dev *dev);
 typedef void (*eth_dev_stop_t)(struct rte_eth_dev *dev);
 /**< @internal Function used to stop a configured Ethernet device. */
 
+typedef int  (*eth_dev_admin_link_up_t)(struct rte_eth_dev *dev);
+/**< @internal Function used to link up a configured Ethernet device administratively. */
+
+typedef int  (*eth_dev_admin_link_down_t)(struct rte_eth_dev *dev);
+/**< @internal Function used to link down a configured Ethernet device administratively. */
+
 typedef void (*eth_dev_close_t)(struct rte_eth_dev *dev);
 /**< @internal Function used to close a configured Ethernet device. */
 
@@ -1223,6 +1229,8 @@ struct eth_dev_ops {
 	eth_dev_configure_t        dev_configure; /**< Configure device. */
 	eth_dev_start_t            dev_start;     /**< Start device. */
 	eth_dev_stop_t             dev_stop;      /**< Stop device. */
+	eth_dev_admin_link_up_t    dev_admin_link_up;   /**< Device link up administratively. */
+	eth_dev_admin_link_down_t  dev_admin_link_down; /**< device link down admininstratively. */
 	eth_dev_close_t            dev_close;     /**< Close device. */
 	eth_promiscuous_enable_t   promiscuous_enable; /**< Promiscuous ON. */
 	eth_promiscuous_disable_t  promiscuous_disable;/**< Promiscuous OFF. */
@@ -1696,6 +1704,32 @@ extern int rte_eth_dev_start(uint8_t port_id);
  */
 extern void rte_eth_dev_stop(uint8_t port_id);
 
+
+/**
+ * Link up an Ethernet device administratively.
+ *
+ * The administrative device link up will re-enable the device rx/tx functionality
+ * after it is previously administrative device linked down.
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ * @return
+ *   - 0: Success, Ethernet device linked up administratively.
+ *   - <0: Error code of the driver device link up function.
+ */
+extern int rte_eth_dev_admin_link_up(uint8_t port_id);
+
+/**
+ * Link down an Ethernet device administratively.
+ * The device rx/tx functionality will be disabled if success,
+ * and it can be re-enabled with a call to
+ * rte_eth_dev_admin_link_up()
+ *
+ * @param port_id
+ *   The port identifier of the Ethernet device.
+ */
+extern int rte_eth_dev_admin_link_down(uint8_t port_id);
+
 /**
  * Close an Ethernet device. The device cannot be restarted!
  *
-- 
1.9.0