Re: [dpdk-dev] [PATCH v3] net/i40e: fix i40evf device initialization

["Xueming(Steven) Li" <xuemingl@nvidia.com>]

On Tue, 2021-10-12 at 14:17 +0000, Ben Magistro wrote:
> The i40evf driver is not initializing the eth_dev attribute which
> can result in a nullptr dereference. Changes were modeled after the
> iavf_dev_init() per suggestion from the mailing list[1].
> 
> [1] https://mails.dpdk.org/archives/dev/2021-August/217251.html
> 
> Fixes: 4861cde46116 ("i40e: new poll mode driver") 
> Cc: stable@dpdk.org
> 
> Signed-off-by: Ben Magistro <koncept1@gmail.com>
> ---
>  drivers/net/i40e/i40e_ethdev_vf.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
> index 0cfe13b7b2..ccdce9a16a 100644
> --- a/drivers/net/i40e/i40e_ethdev_vf.c
> +++ b/drivers/net/i40e/i40e_ethdev_vf.c
> @@ -1564,8 +1564,9 @@ i40evf_dev_alarm_handler(void *param)
>  static int
>  i40evf_dev_init(struct rte_eth_dev *eth_dev)
>  {
> -	struct i40e_hw *hw
> -		= I40E_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private);
> +	struct i40e_adapter *adapter =
> +		I40E_DEV_PRIVATE_TO_ADAPTER(eth_dev->data->dev_private);
> +	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(adapter);
>  	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
>  
>  	PMD_INIT_FUNC_TRACE();
> @@ -1596,11 +1597,14 @@ i40evf_dev_init(struct rte_eth_dev *eth_dev)
>  	hw->device_id = pci_dev->id.device_id;
>  	hw->subsystem_vendor_id = pci_dev->id.subsystem_vendor_id;
>  	hw->subsystem_device_id = pci_dev->id.subsystem_device_id;
> +	hw->bus.bus_id = pci_dev->addr.bus;
>  	hw->bus.device = pci_dev->addr.devid;
>  	hw->bus.func = pci_dev->addr.function;
>  	hw->hw_addr = (void *)pci_dev->mem_resource[0].addr;
>  	hw->adapter_stopped = 1;
>  	hw->adapter_closed = 0;
> +	hw->back = I40E_DEV_PRIVATE_TO_ADAPTER(eth_dev->data->dev_private);
> +	adapter->eth_dev = eth_dev;
>  
>  	if(i40evf_init_vf(eth_dev) != 0) {
>  		PMD_INIT_LOG(ERR, "Init vf failed");

Hi Ben,

There is compilation error, could you rebase with tag v20.11.3?