Re: [dpdk-dev] [PATCH] driver: i40evf device initialization

[Kevin Traynor <ktraynor@redhat.com>]

+ Christian and Xueming

On 26/08/2021 11:25, Ferruh Yigit wrote:
> On 8/25/2021 8:45 PM, 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
>>
>> Signed-off-by: Ben Magistro <koncept1@gmail.com>
> 
> i40evf will be removed in this release. But I guess it helps for stable releases
> to first merge the fixes and later removed it, not sure.
> 
> @Luca, @Kevin, do you prefer this patch directly to stable repos, or through the
> main repo?

I'll leave to Luca/Xueming and Christian to say if they have a
preference, but I'd guess either way is fine from stable view once it
has fixes/stable tags or LTS patch prefix (it doesn't have any of these
at present).

> i40evf won't be tested in the main anyway, since it would be removed before -rc1
> testing, so it looks like there won't be any difference from testing point of view.
> 
> 
>> ---
>>  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");
>>
>