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[dpdk-dev,v3,05/28] eal, ethdev: Add function pointer for closing a device

Message ID 1418106629-22227-6-git-send-email-mukawa@igel.co.jp (mailing list archive)
State Superseded, archived
Headers show

Commit Message

Tetsuya Mukawa Dec. 9, 2014, 6:30 a.m. UTC
The patch adds function pointer to rte_pci_driver and eth_driver
structure. These function pointers are used when ports are detached.

Signed-off-by: Tetsuya Mukawa <mukawa@igel.co.jp>
---
 lib/librte_eal/common/include/rte_pci.h |  7 +++++++
 lib/librte_ether/rte_ethdev.h           | 24 ++++++++++++++++++++++++
 2 files changed, 31 insertions(+)
diff mbox

Patch

diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h
index fe374a8..74720d1 100644
--- a/lib/librte_eal/common/include/rte_pci.h
+++ b/lib/librte_eal/common/include/rte_pci.h
@@ -181,12 +181,19 @@  struct rte_pci_driver;
 typedef int (pci_devinit_t)(struct rte_pci_driver *, struct rte_pci_device *);
 
 /**
+ * Shutdown function for the driver called during hotplugging.
+ */
+typedef int (pci_devshutdown_t)(
+		struct rte_pci_driver *, struct rte_pci_device *);
+
+/**
  * A structure describing a PCI driver.
  */
 struct rte_pci_driver {
 	TAILQ_ENTRY(rte_pci_driver) next;       /**< Next in list. */
 	const char *name;                       /**< Driver name. */
 	pci_devinit_t *devinit;                 /**< Device init. function. */
+	pci_devshutdown_t *devshutdown;         /**< Device shutdown function. */
 	struct rte_pci_id *id_table;            /**< ID table, NULL terminated. */
 	uint32_t drv_flags;                     /**< Flags contolling handling of device. */
 };
diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h
index fb1caea..b329e11 100644
--- a/lib/librte_ether/rte_ethdev.h
+++ b/lib/librte_ether/rte_ethdev.h
@@ -1702,6 +1702,27 @@  typedef int (*eth_dev_init_t)(struct eth_driver  *eth_drv,
 
 /**
  * @internal
+ * Finalization function of an Ethernet driver invoked for each matching
+ * Ethernet PCI device detected during the PCI closing phase.
+ *
+ * @param eth_drv
+ *   The pointer to the [matching] Ethernet driver structure supplied by
+ *   the PMD when it registered itself.
+ * @param eth_dev
+ *   The *eth_dev* pointer is the address of the *rte_eth_dev* structure
+ *   associated with the matching device and which have been [automatically]
+ *   allocated in the *rte_eth_devices* array.
+ * @return
+ *   - 0: Success, the device is properly finalized by the driver.
+ *        In particular, the driver MUST free the *dev_ops* pointer
+ *        of the *eth_dev* structure.
+ *   - <0: Error code of the device initialization failure.
+ */
+typedef int (*eth_dev_shutdown_t)(struct eth_driver  *eth_drv,
+				  struct rte_eth_dev *eth_dev);
+
+/**
+ * @internal
  * The structure associated with a PMD Ethernet driver.
  *
  * Each Ethernet driver acts as a PCI driver and is represented by a generic
@@ -1711,11 +1732,14 @@  typedef int (*eth_dev_init_t)(struct eth_driver  *eth_drv,
  *
  * - The *eth_dev_init* function invoked for each matching PCI device.
  *
+ * - The *eth_dev_shutdown* function invoked for each matching PCI device.
+ *
  * - The size of the private data to allocate for each matching device.
  */
 struct eth_driver {
 	struct rte_pci_driver pci_drv;    /**< The PMD is also a PCI driver. */
 	eth_dev_init_t eth_dev_init;      /**< Device init function. */
+	eth_dev_shutdown_t eth_dev_shutdown;/**< Device shutdown function. */
 	unsigned int dev_private_size;    /**< Size of device private data. */
 };