netdev - Re: [PATCH v5 net-next 14/14] tcp: accecn: enable AccECN

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Message-ID: <2caefd47-52d9-40be-8589-cd92917f1bcd@redhat.com>
Date: Thu, 6 Nov 2025 13:24:03 +0100
From: Paolo Abeni <pabeni@...hat.com>
To: chia-yu.chang@...ia-bell-labs.com, edumazet@...gle.com, parav@...dia.com,
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Subject: Re: [PATCH v5 net-next 14/14] tcp: accecn: enable AccECN

On 10/30/25 3:34 PM, chia-yu.chang@...ia-bell-labs.com wrote:
> From: Chia-Yu Chang <chia-yu.chang@...ia-bell-labs.com>
> 
> Enable Accurate ECN negotiation and request for incoming and
> outgoing connection by setting sysctl_tcp_ecn:
> 
> +==============+===========================================+
> |              |  Highest ECN variant (Accurate ECN, ECN,  |
> |   tcp_ecn    |  or no ECN) to be negotiated & requested  |
> |              +---------------------+---------------------+
> |              | Incoming connection | Outgoing connection |
> +==============+=====================+=====================+
> |      0       |        No ECN       |        No ECN       |
> |      1       |         ECN         |         ECN         |
> |      2       |         ECN         |        No ECN       |
> +--------------+---------------------+---------------------+
> |      3       |     Accurate ECN    |     Accurate ECN    |
> |      4       |     Accurate ECN    |         ECN         |
> |      5       |     Accurate ECN    |        No ECN       |
> +==============+=====================+=====================+
> 
> Refer Documentation/networking/ip-sysctl.rst for more details.
> 
> Signed-off-by: Chia-Yu Chang <chia-yu.chang@...ia-bell-labs.com>

Acked-by: Paolo Abeni <pabeni@...hat.com>