netdev - Re: [PATCH 2/3] ocelot_ace: fix ingress ports setting for rule

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Date:   Mon, 12 Aug 2019 14:38:21 +0200
From:   "Allan W. Nielsen" <allan.nielsen@...rochip.com>
To:     Yangbo 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: [PATCH 2/3] ocelot_ace: fix ingress ports setting for rule

The 08/12/2019 18:48, Yangbo Lu wrote:
> The ingress ports setting of rule should support covering all ports.
> This patch is to use u16 ingress_port for ingress port mask setting
> for ace rule. One bit corresponds one port.
That is how the HW is working, and it would be nice if we could operate on a
port masks/lists instead. But how can this be used?

Can you please explain how/when this will make a difference?

> Signed-off-by: Yangbo Lu <yangbo.lu@....com>
> ---
>  drivers/net/ethernet/mscc/ocelot_ace.c    | 2 +-
>  drivers/net/ethernet/mscc/ocelot_ace.h    | 2 +-
>  drivers/net/ethernet/mscc/ocelot_flower.c | 2 +-
>  3 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/ethernet/mscc/ocelot_ace.c b/drivers/net/ethernet/mscc/ocelot_ace.c
> index 5580a58..91250f3 100644
> --- a/drivers/net/ethernet/mscc/ocelot_ace.c
> +++ b/drivers/net/ethernet/mscc/ocelot_ace.c
> @@ -352,7 +352,7 @@ static void is2_entry_set(struct ocelot *ocelot, int ix,
>  	data.type = IS2_ACTION_TYPE_NORMAL;
>  
>  	VCAP_KEY_ANY_SET(PAG);
> -	VCAP_KEY_SET(IGR_PORT_MASK, 0, ~BIT(ace->chip_port));
> +	VCAP_KEY_SET(IGR_PORT_MASK, 0, ~ace->ingress_port);
>  	VCAP_KEY_BIT_SET(FIRST, OCELOT_VCAP_BIT_1);
>  	VCAP_KEY_BIT_SET(HOST_MATCH, OCELOT_VCAP_BIT_ANY);
>  	VCAP_KEY_BIT_SET(L2_MC, ace->dmac_mc);
> diff --git a/drivers/net/ethernet/mscc/ocelot_ace.h b/drivers/net/ethernet/mscc/ocelot_ace.h
> index ce72f02..0fe23e0 100644
> --- a/drivers/net/ethernet/mscc/ocelot_ace.h
> +++ b/drivers/net/ethernet/mscc/ocelot_ace.h
> @@ -193,7 +193,7 @@ struct ocelot_ace_rule {
>  
>  	enum ocelot_ace_action action;
>  	struct ocelot_ace_stats stats;
> -	int chip_port;
> +	u16 ingress_port;
>  
>  	enum ocelot_vcap_bit dmac_mc;
>  	enum ocelot_vcap_bit dmac_bc;
> diff --git a/drivers/net/ethernet/mscc/ocelot_flower.c b/drivers/net/ethernet/mscc/ocelot_flower.c
> index 7c60e8c..bfddc50 100644
> --- a/drivers/net/ethernet/mscc/ocelot_flower.c
> +++ b/drivers/net/ethernet/mscc/ocelot_flower.c
> @@ -184,7 +184,7 @@ struct ocelot_ace_rule *ocelot_ace_rule_create(struct flow_cls_offload *f,
>  		return NULL;
>  
>  	rule->ocelot = block->port->ocelot;
> -	rule->chip_port = block->port->chip_port;
> +	rule->ingress_port = BIT(block->port->chip_port);
>  	return rule;
>  }

-- Allan