netdev - Re: [PATCH net-next 0/3] tcp: add tos reflection feature

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Message-Id: <20200910.131554.1989059529943936827.davem@davemloft.net>
Date:   Thu, 10 Sep 2020 13:15:54 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     weiwan@...gle.com
Cc:     netdev@...r.kernel.org, edumazet@...gle.com
Subject: Re: [PATCH net-next 0/3] tcp: add tos reflection feature

From: Wei Wang <weiwan@...gle.com>
Date: Wed,  9 Sep 2020 17:50:45 -0700

> This patch series adds a new tcp feature to reflect TOS value received in
> SYN, and send it out in SYN-ACK, and eventually set the TOS value of the
> established socket with this reflected TOS value. This provides a way to
> set the traffic class/QoS level for all traffic in the same connection
> to be the same as the incoming SYN. It could be useful for datacenters
> to provide equivalent QoS according to the incoming request.
> This feature is guarded by /proc/sys/net/ipv4/tcp_reflect_tos, and is by
> default turned off.
> 
> Wei Wang (3):
>   tcp: record received TOS value in the request socket
>   ip: pass tos into ip_build_and_send_pkt()
>   tcp: reflect tos value received in SYN to the socket

This looks good, series applied, thanks.