netdev - Re: [PATCH iproute2] ip link: initial support for bareudp devices

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Message-ID: <20200706111109.5039ed3f@hermes.lan>
Date:   Mon, 6 Jul 2020 11:11:09 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Guillaume Nault <gnault@...hat.com>
Cc:     netdev@...r.kernel.org,
        Martin Varghese <martinvarghesenokia@...il.com>
Subject: Re: [PATCH iproute2] ip link: initial support for bareudp devices

On Wed, 1 Jul 2020 21:45:04 +0200
Guillaume Nault <gnault@...hat.com> wrote:

> Bareudp devices provide a generic L3 encapsulation for tunnelling
> different protocols like MPLS, IP, NSH, etc. inside a UDP tunnel.
> 
> This patch is based on original work from Martin Varghese:
> https://lore.kernel.org/netdev/1570532361-15163-1-git-send-email-martinvarghesenokia@gmail.com/
> 
> Examples:
> 
>   - ip link add dev bareudp0 type bareudp dstport 6635 ethertype mpls_uc
> 
> This creates a bareudp tunnel device which tunnels L3 traffic with
> ethertype 0x8847 (unicast MPLS traffic). The destination port of the
> UDP header will be set to 6635. The device will listen on UDP port 6635
> to receive traffic.
> 
>   - ip link add dev bareudp0 type bareudp dstport 6635 ethertype ipv4 multiproto
> 
> Same as the MPLS example, but for IPv4. The "multiproto" keyword allows
> the device to also tunnel IPv6 traffic.
> 
> Signed-off-by: Guillaume Nault <gnault@...hat.com>

Applied. 
Would it be possible to add a test for this in the iproute2 testsuite?