[dpdk-dev] net/i40e: add promiscuous configure unsupported check

[Ferruh Yigit]

On 2/28/2020 3:22 AM, Xiao Zhang wrote:
> Return ENOTSUP error code when configuring i40evf promiscuous mode to
> fix port start hang issue on platforms which are unsupported to configure
> promiscuous mode.

Hi Xiao,

What is the cause of the hang, was the application keep trying because of the
"-EAGAIN" error?

> 
> Fixes: ddc7cb0d9453 ("net/i40e: re-program promiscuous mode on VF
> interface")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Xiao Zhang <xiao.zhang at intel.com>
> ---
>  drivers/net/i40e/i40e_ethdev_vf.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c
> index c34f520..244397e 100644
> --- a/drivers/net/i40e/i40e_ethdev_vf.c
> +++ b/drivers/net/i40e/i40e_ethdev_vf.c
> @@ -2191,6 +2191,8 @@ i40evf_dev_promiscuous_enable(struct rte_eth_dev *dev)
>  	ret = i40evf_config_promisc(dev, 1, vf->promisc_multicast_enabled);
>  	if (ret == 0)
>  		vf->promisc_unicast_enabled = TRUE;
> +	else if (ret == I40E_NOT_SUPPORTED)
> +		ret = -ENOTSUP;
>  	else
>  		ret = -EAGAIN;
>  
> @@ -2206,6 +2208,8 @@ i40evf_dev_promiscuous_disable(struct rte_eth_dev *dev)
>  	ret = i40evf_config_promisc(dev, 0, vf->promisc_multicast_enabled);
>  	if (ret == 0)
>  		vf->promisc_unicast_enabled = FALSE;
> +	else if (ret == I40E_NOT_SUPPORTED)
> +		ret = -ENOTSUP;
>  	else
>  		ret = -EAGAIN;
>  
> @@ -2221,6 +2225,8 @@ i40evf_dev_allmulticast_enable(struct rte_eth_dev *dev)
>  	ret = i40evf_config_promisc(dev, vf->promisc_unicast_enabled, 1);
>  	if (ret == 0)
>  		vf->promisc_multicast_enabled = TRUE;
> +	else if (ret == I40E_NOT_SUPPORTED)
> +		ret = -ENOTSUP;
>  	else
>  		ret = -EAGAIN;
>  
> @@ -2236,6 +2242,8 @@ i40evf_dev_allmulticast_disable(struct rte_eth_dev *dev)
>  	ret = i40evf_config_promisc(dev, vf->promisc_unicast_enabled, 0);
>  	if (ret == 0)
>  		vf->promisc_multicast_enabled = FALSE;
> +	else if (ret == I40E_NOT_SUPPORTED)
> +		ret = -ENOTSUP;
>  	else
>  		ret = -EAGAIN;
>  
>