netdev - Re: [PATCH net-next] nfp: support TX VLAN ctag insert in NFDK

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Message-ID: <20220711201558.559d7c06@kernel.org>
Date:   Mon, 11 Jul 2022 20:15:58 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Simon Horman <simon.horman@...igine.com>
Cc:     David Miller <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        oss-drivers@...igine.com, Diana Wang <na.wang@...igine.com>
Subject: Re: [PATCH net-next] nfp: support TX VLAN ctag insert in NFDK

On Mon, 11 Jul 2022 11:30:48 +0200 Simon Horman wrote:
> From: Diana Wang <na.wang@...igine.com>
> 
> Add support for TX VLAN ctag insert
> which may be configured via ethtool.
> e.g.
>      # ethtool -K $DEV tx-vlan-offload on
> 
> The NIC supplies VLAN insert information as packet metadata.
> The fields of this VLAN metadata including vlan_proto and vlan tag.
> 
> Configuration control bit NFP_NET_CFG_CTRL_TXVLAN_V2 is to
> signal availability of ctag-insert features of the firmware.
> 
> NFDK is used to communicate via PCIE to NFP-3800 based NICs
> while NFD3 is used for other NICs supported by the NFP driver.
> This features is currently implemented only for NFD3 and
> this patch adds support for it with NFDK.
> 
> Signed-off-by: Diana Wang <na.wang@...igine.com>
> Reviewed-by: Louis Peens <louis.peens@...igine.com>
> Signed-off-by: Simon Horman <simon.horman@...igine.com>

Interesting exercise.....

Acked-by: Jakub Kicinski <kuba@...nel.org>