netdev - Re: [net PATCH 1/1] drivers: net: cpsw: discard dual emac default vlan configuration

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Message-ID: <54BE6573.1040801@cogentembedded.com>
Date:	Tue, 20 Jan 2015 17:25:55 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Mugunthan V N <mugunthanvnm@...com>, netdev@...r.kernel.org
CC:	davem@...emloft.net, stable@...r.kernel.org
Subject: Re: [net PATCH 1/1] drivers: net: cpsw: discard dual emac default
 vlan configuration

Hello.

On 1/20/2015 3:25 PM, Mugunthan V N wrote:

> In Dual EMAC, the default vlans are used to segregate rx packets between

    VLANs. And RX.

> the ports, so adding the same default vlan to the switch will affect the

    VLAN.

> normal packet transfers. So returning error on addition of dual emac

    EMAC.

> default vlans.

    VLANs.

> Even if emac 0 default port vlan is added to emac 1, it will lead to

    EMAC. And VLAN

> break

    Breaking.

> dual EMAC port seperations.

    Separations.

> Fixes: d9ba8f9 (driver: net: ethernet: cpsw: dual emac interface implementation)

    12 hex digits, please.

> Cc: <stable@...r.kernel.org> # v3.9+
> Reported-by: Felipe Balbi <balbi@...com>
> Signed-off-by: Mugunthan V N <mugunthanvnm@...com>
> ---
>   drivers/net/ethernet/ti/cpsw.c | 22 ++++++++++++++++++++++
>   1 file changed, 22 insertions(+)

> diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
> index e068d48..7c32815 100644
> --- a/drivers/net/ethernet/ti/cpsw.c
> +++ b/drivers/net/ethernet/ti/cpsw.c
> @@ -1683,6 +1683,19 @@ static int cpsw_ndo_vlan_rx_add_vid(struct net_device *ndev,
>   	if (vid == priv->data.default_vlan)
>   		return 0;
>
> +	if (priv->data.dual_emac) {
> +		/* In dual EMAC, reserved VLAN id should not be used of

    s/of/for/, perhaps?

> +		 * creating vlan interfaces as this can break the dual

    s/vlan/VLAN/. Be consistent, please.

> +		 * EMAC port seperation

    Separation.

[...]

WBR, Sergei

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