Re: [PATCH net] devlink: Expose external flag for PCI SF ports

[Przemek Kitszel <przemyslaw.kitszel@intel.com>]

On 8/3/26 11:00, Shay Drory wrote:
> The external flag is part of the PCI SF port attributes, but unlike the
> PCI PF and PCI VF flavours it was never filled into the port dump, so
> userspace could not query it directly.
> 
> Reporting of the external flag was missed for SF ports. Hence, put
> DEVLINK_ATTR_PORT_EXTERNAL for the PCI SF flavour as well, matching what
> PCI PF and PCI VF ports already report.
> 
> $ devlink port show pci/0033:01:00.0/163840
>   pci/0033:01:00.0/163840: type eth netdev eth1 flavour pcisf controller 1 pfnum 0 sfnum 77 external true splittable false
> 
> Fixes: a1ab3e4554b5 ("devlink: Extend SF port attributes to have external attribute")

Cited commit has neither introduced a user-observed bug nor a buggy
feature, merely a "backend for a feature", and now you exposes it,
making "the frontend".
IOW: I will rather call it a next material.

OTOH, code is fine

> Reviewed-by: Parav Pandit <parav@nvidia.com>
> Signed-off-by: Shay Drory <shayd@nvidia.com>
> ---
>   net/devlink/port.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/net/devlink/port.c b/net/devlink/port.c
> index dc82cac68e7d..1528f2d148df 100644
> --- a/net/devlink/port.c
> +++ b/net/devlink/port.c
> @@ -267,6 +267,8 @@ static int devlink_nl_port_attrs_put(struct sk_buff *msg,
>   		    nla_put_u32(msg, DEVLINK_ATTR_PORT_PCI_SF_NUMBER,
>   				attrs->pci_sf.sf))
>   			return -EMSGSIZE;
> +		if (nla_put_u8(msg, DEVLINK_ATTR_PORT_EXTERNAL, attrs->pci_sf.external))
> +			return -EMSGSIZE;
>   		break;
>   	case DEVLINK_PORT_FLAVOUR_PHYSICAL:
>   	case DEVLINK_PORT_FLAVOUR_CPU: