[dpdk-dev] [RFC PATCH v2 06/28] ethdev: Add rte_eth_dev_shutdown for closing PCI devices.

[Tetsuya Mukawa]

rte_eth_dev_shutdown() is called when PCI device is closed.

Signed-off-by: Tetsuya Mukawa <mukawa at igel.co.jp>
---
 lib/librte_ether/rte_ethdev.c | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index efd631b..b623e31 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -319,6 +319,42 @@ rte_eth_dev_init(struct rte_pci_driver *pci_drv,
        return diag;
 }

+static int
+rte_eth_dev_shutdown(struct rte_pci_driver *pci_drv,
+                struct rte_pci_device *pci_dev)
+{
+       struct eth_driver *eth_drv;
+       struct rte_eth_dev *eth_dev;
+       char ethdev_name[RTE_ETH_NAME_MAX_LEN];
+
+       /* Create unique Ethernet device name using PCI address */
+       snprintf(ethdev_name, RTE_ETH_NAME_MAX_LEN, "%d:%d.%d",
+                       pci_dev->addr.bus, pci_dev->addr.devid,
+                       pci_dev->addr.function);
+
+       eth_dev = rte_eth_dev_free(ethdev_name);
+       if (eth_dev == NULL)
+               return -ENODEV;
+
+       eth_drv = (struct eth_driver *)pci_drv;
+
+       /* Invoke PMD device shutdown function */
+       if (*eth_drv->eth_dev_shutdown)
+               (*eth_drv->eth_dev_shutdown)(eth_drv, eth_dev);
+
+       /* init user callbacks */
+       TAILQ_INIT(&(eth_dev->callbacks));
+
+       if (rte_eal_process_type() == RTE_PROC_PRIMARY)
+               rte_free(eth_dev->data->dev_private);
+
+       eth_dev->pci_dev = NULL;
+       eth_dev->driver = NULL;
+       eth_dev->data = NULL;
+
+       return 0;
+}
+
 /**
  * Register an Ethernet [Poll Mode] driver.
  *
@@ -337,6 +373,7 @@ void
 rte_eth_driver_register(struct eth_driver *eth_drv)
 {
        eth_drv->pci_drv.devinit = rte_eth_dev_init;
+       eth_drv->pci_drv.devshutdown = rte_eth_dev_shutdown;
        rte_eal_pci_register(&eth_drv->pci_drv);
 }

-- 
1.9.1