[dpdk-dev] [PATCH 1/2] ethdev: Allow to overload pci_drv.devinit and pci_drv.devuninit
krytarowski at caviumnetworks.com
krytarowski at caviumnetworks.com
Tue Feb 2 15:27:18 CET 2016
From: Kamil Rytarowski <Kamil.Rytarowski at caviumnetworks.com>
This change enables drivers needing custom pci (de)initialization functions
through the standard callback overloading.
For example:
/*
* virtual function driver struct
*/
static struct eth_driver rte_DRIVER_pmd = {
{
.name = "rte_DRIVER_pmd",
.id_table = pci_id_DRIVER_map,
.drv_flags = RTE_PCI_DRV_NEED_MAPPING,
.devinit = DRIVER_pci_devinit,
},
.eth_dev_init = eth_DRIVER_dev_init,
.dev_private_size = sizeof(struct DRIVER),
};
Use-case is as follows: NIC offers several pci virtual functions, while
one of them is to be treated as port, we need to configure the rest in a
specific way for particular device for full interface (port) functionality.
Signed-off-by: Kamil Rytarowski <Kamil.Rytarowski at caviumnetworks.com>
---
lib/librte_ether/rte_ethdev.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c
index 756b234..ac4aeab 100644
--- a/lib/librte_ether/rte_ethdev.c
+++ b/lib/librte_ether/rte_ethdev.c
@@ -351,8 +351,10 @@ rte_eth_dev_uninit(struct rte_pci_device *pci_dev)
void
rte_eth_driver_register(struct eth_driver *eth_drv)
{
- eth_drv->pci_drv.devinit = rte_eth_dev_init;
- eth_drv->pci_drv.devuninit = rte_eth_dev_uninit;
+ if (!eth_drv->pci_drv.devinit)
+ eth_drv->pci_drv.devinit = rte_eth_dev_init;
+ if (!eth_drv->pci_drv.devuninit)
+ eth_drv->pci_drv.devuninit = rte_eth_dev_uninit;
rte_eal_pci_register(ð_drv->pci_drv);
}
--
1.9.1
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