Re: [PATCH net-next v2 04/10] devlink: allow to use devlink index as a command handle

[Jakub Kicinski]

On Wed, 25 Feb 2026 14:34:16 +0100 Jiri Pirko wrote:
> +     if (attrs[DEVLINK_ATTR_INDEX]) {
> +             index = nla_get_uint(attrs[DEVLINK_ATTR_INDEX]);
> +             devlink = devlinks_xa_lookup_get(net, index);
> +             if (!devlink)
> +                     return ERR_PTR(-ENODEV);
> +             goto found;
> +     }
> +
>       if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
>               return ERR_PTR(-EINVAL);

If both INDEX and BUS_NAME + DEV_NAME are provided we should check
that they point to the same device? Or reject user space passing both?