netdev - Re: [PATCH net-next v9] vxlan: add support for flowlabel inherit

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Date: Thu, 16 Nov 2023 22:40:26 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Alce Lafranque <alce@...ranque.net>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com, dsahern@...nel.org, idosch@...dia.com,
 netdev@...r.kernel.org, vincent@...nat.ch
Subject: Re: [PATCH net-next v9] vxlan: add support for flowlabel inherit

Hello:

This patch was applied to netdev/net-next.git (main)
by David S. Miller <davem@...emloft.net>:

On Tue, 14 Nov 2023 11:36:57 -0600 you wrote:
> By default, VXLAN encapsulation over IPv6 sets the flow label to 0, with
> an option for a fixed value. This commits add the ability to inherit the
> flow label from the inner packet, like for other tunnel implementations.
> This enables devices using only L3 headers for ECMP to correctly balance
> VXLAN-encapsulated IPv6 packets.
> 
> ```
> $ ./ip/ip link add dummy1 type dummy
> $ ./ip/ip addr add 2001:db8::2/64 dev dummy1
> $ ./ip/ip link set up dev dummy1
> $ ./ip/ip link add vxlan1 type vxlan id 100 flowlabel inherit remote 2001:db8::1 local 2001:db8::2
> $ ./ip/ip link set up dev vxlan1
> $ ./ip/ip addr add 2001:db8:1::2/64 dev vxlan1
> $ ./ip/ip link set arp off dev vxlan1
> $ ping -q 2001:db8:1::1 &
> $ tshark -d udp.port==8472,vxlan -Vpni dummy1 -c1
> [...]
> Internet Protocol Version 6, Src: 2001:db8::2, Dst: 2001:db8::1
>     0110 .... = Version: 6
>     .... 0000 0000 .... .... .... .... .... = Traffic Class: 0x00 (DSCP: CS0, ECN: Not-ECT)
>         .... 0000 00.. .... .... .... .... .... = Differentiated Services Codepoint: Default (0)
>         .... .... ..00 .... .... .... .... .... = Explicit Congestion Notification: Not ECN-Capable Transport (0)
>     .... 1011 0001 1010 1111 1011 = Flow Label: 0xb1afb
> [...]
> Virtual eXtensible Local Area Network
>     Flags: 0x0800, VXLAN Network ID (VNI)
>     Group Policy ID: 0
>     VXLAN Network Identifier (VNI): 100
> [...]
> Internet Protocol Version 6, Src: 2001:db8:1::2, Dst: 2001:db8:1::1
>     0110 .... = Version: 6
>     .... 0000 0000 .... .... .... .... .... = Traffic Class: 0x00 (DSCP: CS0, ECN: Not-ECT)
>         .... 0000 00.. .... .... .... .... .... = Differentiated Services Codepoint: Default (0)
>         .... .... ..00 .... .... .... .... .... = Explicit Congestion Notification: Not ECN-Capable Transport (0)
>     .... 1011 0001 1010 1111 1011 = Flow Label: 0xb1afb
> ```
> 
> [...]

Here is the summary with links:
  - [net-next,v9] vxlan: add support for flowlabel inherit
    https://git.kernel.org/netdev/net-next/c/c6e9dba3be5e

You are awesome, thank you!
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