linux-kernel - Re: [net-next v5 1/2] seg6: inherit DSCP of inner IPv4 packets

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Message-ID: <efaf3273-e147-c27e-d5b8-241930335b82@gmail.com>
Date:   Tue, 25 Aug 2020 10:45:52 -0600
From:   David Ahern <dsahern@...il.com>
To:     Ahmed Abdelsalam <ahabdels@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     andrea.mayer@...roma2.it
Subject: Re: [net-next v5 1/2] seg6: inherit DSCP of inner IPv4 packets

On 8/25/20 10:02 AM, Ahmed Abdelsalam wrote:
> This patch allows SRv6 encapsulation to inherit the DSCP value of
> the inner IPv4 packet.
> 
> This allows forwarding packet across the SRv6 fabric based on their
> original traffic class.
> 
> The option is controlled through a sysctl (seg6_inherit_inner_ipv4_dscp).
> The sysctl has to be set to 1 to enable this feature.
> 

rather than adding another sysctl, can this be done as a SEG6_LOCAL
attribute and managed via seg6_local_lwt?