netdev - Re: [PATCH net-next v5] GTP: add support for flow based tunneling API

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Date:   Wed, 13 Jan 2021 07:25:43 -0800
From:   Pravin Shelar <pravin.ovn@...il.com>
To:     Pravin B Shelar <pbshelar@...com>,
        Harald Welte <laforge@...monks.org>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Jonas Bonn <jonas@...rbonn.se>,
        Jakub Kicinski <kuba@...nel.org>
Subject: Re: [PATCH net-next v5] GTP: add support for flow based tunneling API

Hi Harald,

On Sat, Jan 9, 2021 at 11:02 PM Pravin B Shelar <pbshelar@...com> wrote:
>
> Following patch add support for flow based tunneling API
> to send and recv GTP tunnel packet over tunnel metadata API.
> This would allow this device integration with OVS or eBPF using
> flow based tunneling APIs.
>
> Signed-off-by: Pravin B Shelar <pbshelar@...com>
> ---
> v4-v5:
> - coding style changes
> v3-v4:
> - add check for non-zero dst port
> v2-v3:
> -  Fixed coding style
> -  changed IFLA_GTP_FD1 to optional param for LWT dev.
> v1-v2:
> -  Fixed according to comments from Jonas Bonn
>
This is the latest revision.

I have started with OVS integration, there are unit tests that
validate the GTP support. This is datapath related test, that has the
setup commands:
https://github.com/pshelar/ovs/blob/6ec6a2a86adc56c7c9dcab7b3a7b70bb6dad35c9/tests/system-layer3-tunnels.at#L158

Once OVS patches are upstream I can post patches for ip-route command.

Patch for iproute to add support for LWT GTP devices.
https://github.com/pshelar/iproute2/commit/d6e99f8342672e6e9ce0b71e153296f8e2b41cfc