Re: [dpdk-dev] [PATCH] net/ixgbe: clean up rte_eth_dev_info_get

[Tiwei Bie <tiwei.bie@intel.com>]

On Wed, Jan 25, 2017 at 10:39:22AM +0800, Wenzhuo Lu wrote:
> It'not appropriate to call rte_eth_dev_info_get in PMD,
> as rte_eth_dev_info_get need to get info from PMD.
> Remove rte_eth_dev_info_get from PMD code and get the
> info directly.
> 
> Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
> ---
>  drivers/net/ixgbe/ixgbe_ethdev.c | 144 ++++++++++++++++++---------------------
>  1 file changed, 68 insertions(+), 76 deletions(-)
> 
> diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
> index 64ce55a..f14a68b 100644
> --- a/drivers/net/ixgbe/ixgbe_ethdev.c
> +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
> @@ -4401,17 +4401,17 @@ static int ixgbevf_dev_xstats_get_names(__rte_unused struct rte_eth_dev *dev,
>  	int rar_entry;
>  	uint8_t *new_mac = (uint8_t *)(mac_addr);
>  	struct rte_eth_dev *dev;
> -	struct rte_eth_dev_info dev_info;
> +	struct rte_pci_device *pci_dev;
>  
>  	RTE_ETH_VALID_PORTID_OR_ERR_RET(port, -ENODEV);
>  
>  	dev = &rte_eth_devices[port];
> -	rte_eth_dev_info_get(port, &dev_info);
> +	pci_dev = IXGBE_DEV_TO_PCI(dev);
>  
> -	if (is_ixgbe_pmd(dev_info.driver_name) != 0)
> +	if (is_ixgbe_pmd(dev->data->drv_name))
>  		return -ENOTSUP;
>  

The return value of is_ixgbe_pmd() is not boolean (actually I think it
should be based on its name). If we omit the comparison with 0, the code
looks weird. It looks like it'll return -ENOTSUP if the port's driver
is ixgbe PMD.

Best regards,
Tiwei Bie