linux-kernel - RE: [PATCH net-next v4 4/4] net: renesas: rswitch: add modifiable ageing time

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Message-ID:
 <TY4PR01MB142823434E3947C26EF056E85823AA@TY4PR01MB14282.jpnprd01.prod.outlook.com>
Date: Fri, 29 Aug 2025 09:17:34 +0000
From: Michael Dege <michael.dege@...esas.com>
To: Sergey Shtylyov <sergei.shtylyov@...il.com>, Yoshihiro Shimoda
	<yoshihiro.shimoda.uh@...esas.com>, niklas.soderlund
	<niklas.soderlund@...natech.se>, Paul Barker <paul@...rker.dev>, Andrew Lunn
	<andrew+netdev@...n.ch>, "David S. Miller" <davem@...emloft.net>, Eric
 Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>
CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-renesas-soc@...r.kernel.org" <linux-renesas-soc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Nikita
 Yushchenko <nikita.yoush@...entembedded.com>
Subject: RE: [PATCH net-next v4 4/4] net: renesas: rswitch: add modifiable
 ageing time

> -----Original Message-----
> From: Sergey Shtylyov <sergei.shtylyov@...il.com>
> Sent: Thursday, August 28, 2025 3:38 PM
> To: Michael Dege <michael.dege@...esas.com>; Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>;
> niklas.soderlund <niklas.soderlund@...natech.se>; Paul Barker <paul@...rker.dev>; Andrew Lunn
> <andrew+netdev@...n.ch>; David S. Miller <davem@...emloft.net>; Eric Dumazet <edumazet@...gle.com>;
> Jakub Kicinski <kuba@...nel.org>; Paolo Abeni <pabeni@...hat.com>
> Cc: netdev@...r.kernel.org; linux-renesas-soc@...r.kernel.org; linux-kernel@...r.kernel.org; Nikita
> Yushchenko <nikita.yoush@...entembedded.com>
> Subject: Re: [PATCH net-next v4 4/4] net: renesas: rswitch: add modifiable ageing time
>
> On 8/28/25 1:23 PM, Michael Dege wrote:
>
> > This commit allows the setting of the MAC table aging in the R-Car S4
>
>     Please just use the imperative mood: Allow the setting...

Thank you for pointing it out. I fixed it for the next version. Also, for
[3/4].

>
> > Rswitch using the SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME attribute.
> >
> > Signed-off-by: Michael Dege <michael.dege@...esas.com>
> > ---
> >  drivers/net/ethernet/renesas/rswitch_l2.c | 21 +++++++++++++++++++++
> >  1 file changed, 21 insertions(+)
> >
> > diff --git a/drivers/net/ethernet/renesas/rswitch_l2.c
> > b/drivers/net/ethernet/renesas/rswitch_l2.c
> > index
> > 49a24464dbb0cf3f3219a0699fc4671ddd71ef03..c57396af70a4b291746d6451eae7
> > cf60b3f89721 100644
> > --- a/drivers/net/ethernet/renesas/rswitch_l2.c
> > +++ b/drivers/net/ethernet/renesas/rswitch_l2.c
> > @@ -193,6 +193,25 @@ static int rswitch_netdevice_event(struct notifier_block *nb,
> >     return NOTIFY_OK;
> >  }
> >
> > +static int rswitch_update_ageing_time(struct net_device *ndev,
> > +clock_t time) {
> > +   struct rswitch_device *rdev = netdev_priv(ndev);
> > +   u32 reg_val;
> > +
> > +   if (!is_rdev(ndev))
> > +           return -ENODEV;
> > +
> > +   if (!FIELD_FIT(FWMACAGC_MACAGT, time))
> > +           return -EINVAL;
> > +
> > +   rdev = netdev_priv(ndev);
>
>    Haven't you already initialized rdev to the same value above?

Good point, also fixed for v5.

Best regards,

Michael
>
> [...]
>
> MBR, Sergey

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