linux-kernel - Re: [PATCH net-next 1/6] net: dsa: remove trans argument from mdb ops

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Date:   Thu, 9 Nov 2017 10:04:46 +0100
From:   Egil Hjelmeland <privat@...l-hjelmeland.no>
To:     Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        netdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel@...oirfairelinux.com,
        "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>
Subject: Re: [PATCH net-next 1/6] net: dsa: remove trans argument from mdb ops

On 08. nov. 2017 18:19, Vivien Didelot wrote:
> The DSA switch MDB ops pass the switchdev_trans structure down to the
> drivers, but no one is using them and they aren't supposed to anyway.
> 
> Remove the trans argument from MDB prepare and add operations.
> 
> -	int	(*port_mdb_prepare)(struct dsa_switch *ds, int port,
> -				    const struct switchdev_obj_port_mdb *mdb,
> -				    struct switchdev_trans *trans);
> -	void	(*port_mdb_add)(struct dsa_switch *ds, int port,
> -				const struct switchdev_obj_port_mdb *mdb,
> -				struct switchdev_trans *trans);
> +	int (*port_mdb_prepare)(struct dsa_switch *ds, int port,
> +				const struct switchdev_obj_port_mdb *mdb);
> +	void (*port_mdb_add)(struct dsa_switch *ds, int port,
> +			     const struct switchdev_obj_port_mdb *mdb);
>   	int	(*port_mdb_del)(struct dsa_switch *ds, int port,
>   				const struct switchdev_obj_port_mdb *mdb);

Hi Vivien
Nice to get rid of "trans". I recall I was confused by this parameter. 
"Am I supposed to do something with this parameter?".

But when at it. What about getting rid of switchdev_obj_port_mdb, making 
similar signatures as the new .port_fdb_xxx functions? Would that make 
sense?

Egil