This patch aims to enable hotplug detection in i40e PMD.
First, it sets the “RTE_PCI_DRV_INTR_RMV” flag in drv_flags to
announce the ability of hotplug processing. Then, it calls the
“rte_eth_dev_event_handler_install” API to install the device
event handler for ethdev. When the eal device event be detected,
it calls the ethdev callback to process it. If the event is the
hotplug-out event, it will trigger the “RTE_ETH_EVENT_INTR_RMV”
event into the ethdev callback to allow the application's callback
to process hotplug for this ethdev.
Signed-off-by: Jeff Guo <jia....@intel.com>
Acked-by: Qi Zhang <qi.z.zh...@intel.com>
---
v6->v5:
refine commit log
---
drivers/net/i40e/i40e_ethdev.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 85a6a86..bd9b3ce 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -697,7 +697,7 @@ static int eth_i40e_pci_remove(struct rte_pci_device
*pci_dev)
static struct rte_pci_driver rte_i40e_pmd = {
.id_table = pci_id_i40e_map,
.drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC |
- RTE_PCI_DRV_IOVA_AS_VA,
+ RTE_PCI_DRV_IOVA_AS_VA | RTE_PCI_DRV_INTR_RMV,
.probe = eth_i40e_pci_probe,
.remove = eth_i40e_pci_remove,
};
@@ -1466,6 +1466,9 @@ eth_i40e_dev_init(struct rte_eth_dev *dev, void
*init_params __rte_unused)
rte_intr_callback_register(intr_handle,
i40e_dev_interrupt_handler, dev);
+ /* install the dev event handler for ethdev. */
+ rte_eth_dev_event_handler_install(dev);
+
/* configure and enable device interrupt */
i40e_pf_config_irq0(hw, TRUE);
i40e_pf_enable_irq0(hw);
@@ -1697,6 +1700,9 @@ eth_i40e_dev_uninit(struct rte_eth_dev *dev)
/* Remove all Traffic Manager configuration */
i40e_tm_conf_uninit(dev);
+ /* uninstall the dev event handler for ethdev. */
+ rte_eth_dev_event_handler_uninstall(dev);
+
return 0;
}
--
2.7.4
