netdev - Re: [PATCH, net-next, v4, 1/2] ethtool: Factored out similar ethtool link settings for virtual devices to core

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Date:   Fri, 14 Feb 2020 08:20:28 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Cris Forno <cforno12@...ux.vnet.ibm.com>
Cc:     netdev@...r.kernel.org, mst@...hat.com, jasowang@...hat.com,
        haiyangz@...rosoft.com, sthemmin@...rosoft.com, sashal@...nel.org,
        tlfalcon@...ux.ibm.com, davem@...emloft.net, mkubecek@...e.cz,
        willemdebruijn.kernel@...il.com
Subject: Re: [PATCH, net-next, v4, 1/2] ethtool: Factored out similar
 ethtool link settings for virtual devices to core

On Thu, 13 Feb 2020 14:14:09 -0600 Cris Forno wrote:
> diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
> index 95991e43..149f982 100644
> --- a/include/linux/ethtool.h
> +++ b/include/linux/ethtool.h
> @@ -394,6 +394,8 @@ struct ethtool_ops {
>  					  struct ethtool_coalesce *);
>  	int	(*set_per_queue_coalesce)(struct net_device *, u32,
>  					  struct ethtool_coalesce *);
> +	bool    (*virtdev_validate_link_ksettings)(const struct
> +						   ethtool_link_ksettings *);

Could this callback be passed to ethtool_virtdev_set_link_ksettings()
as an argument instead of being in the global structure? Callers need
to pass speed and duplex pointers anyway.

>  	int	(*get_link_ksettings)(struct net_device *,
>  				      struct ethtool_link_ksettings *);
>  	int	(*set_link_ksettings)(struct net_device *,