netdev - RE: [v2, 3/4] ocelot_ace: fix action of trap

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Date:   Wed, 14 Aug 2019 04:35:25 +0000
From:   "Y.b. Lu" <yangbo.lu@....com>
To:     "Allan W . Nielsen" <allan.nielsen@...rochip.com>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "David S . Miller" <davem@...emloft.net>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>
Subject: RE: [v2, 3/4] ocelot_ace: fix action of trap

Hi Allan,

> -----Original Message-----
> From: netdev-owner@...r.kernel.org <netdev-owner@...r.kernel.org> On
> Behalf Of Allan W . Nielsen
> Sent: Tuesday, August 13, 2019 2:30 PM
> To: Y.b. Lu <yangbo.lu@....com>
> Cc: netdev@...r.kernel.org; David S . Miller <davem@...emloft.net>;
> Alexandre Belloni <alexandre.belloni@...tlin.com>; Microchip Linux Driver
> Support <UNGLinuxDriver@...rochip.com>
> Subject: Re: [v2, 3/4] ocelot_ace: fix action of trap
> 
> The 08/13/2019 08:16, Allan W . Nielsen wrote:
> > The 08/13/2019 10:52, Yangbo Lu wrote:
> > > The trap action should be copying the frame to CPU and dropping it
> > > for forwarding, but current setting was just copying frame to CPU.
> > >
> > > Signed-off-by: Yangbo Lu <yangbo.lu@....com>
> > > ---
> > > Changes for v2:
> > > 	- None.
> > > ---
> > >  drivers/net/ethernet/mscc/ocelot_ace.c | 6 +++---
> > >  1 file changed, 3 insertions(+), 3 deletions(-)
> > >
> > > diff --git a/drivers/net/ethernet/mscc/ocelot_ace.c
> > > b/drivers/net/ethernet/mscc/ocelot_ace.c
> > > index 91250f3..59ad590 100644
> > > --- a/drivers/net/ethernet/mscc/ocelot_ace.c
> > > +++ b/drivers/net/ethernet/mscc/ocelot_ace.c
> > > @@ -317,9 +317,9 @@ static void is2_action_set(struct vcap_data *data,
> > >  		break;
> > >  	case OCELOT_ACL_ACTION_TRAP:
> > >  		VCAP_ACT_SET(PORT_MASK, 0x0);
> > > -		VCAP_ACT_SET(MASK_MODE, 0x0);
> > > -		VCAP_ACT_SET(POLICE_ENA, 0x0);
> > > -		VCAP_ACT_SET(POLICE_IDX, 0x0);
> > > +		VCAP_ACT_SET(MASK_MODE, 0x1);
> > > +		VCAP_ACT_SET(POLICE_ENA, 0x1);
> > > +		VCAP_ACT_SET(POLICE_IDX, OCELOT_POLICER_DISCARD);
> > >  		VCAP_ACT_SET(CPU_QU_NUM, 0x0);
> > >  		VCAP_ACT_SET(CPU_COPY_ENA, 0x1);
> > >  		break;
> >
> > This is still wrong, please see the comments provided the first time
> > you submitted this.
> >
> > /Allan
> 
> I believe this will make it work - but I have not tested it:
> 
>  	case OCELOT_ACL_ACTION_TRAP:
>  		VCAP_ACT_SET(PORT_MASK, 0x0);
> -		VCAP_ACT_SET(MASK_MODE, 0x0);
> +		VCAP_ACT_SET(MASK_MODE, 0x1);
>  		VCAP_ACT_SET(CPU_QU_NUM, 0x0);
>  		VCAP_ACT_SET(CPU_COPY_ENA, 0x1);
>  		break;
> 

[Y.b. Lu] I will have a try. It seems more proper.
Thanks.

> --
> /Allan