On 9/18/25 6:21 PM, [email protected] wrote:
> From: Chia-Yu Chang <[email protected]>
> 
> According to Section 3.1.2 of AccECN spec (RFC9768), if a TCP Client
> has sent a SYN requesting AccECN feedback with (AE,CWR,ECE) = (1,1,1)
> then receives a SYN/ACK with the currently reserved combination
> (AE,CWR,ECE) = (1,0,1) but it does not have logic specific to such a
> combination, the Client MUST enable AccECN mode as if the SYN/ACK
> confirmed that the Server supported AccECN and as if it fed back that
> the IP-ECN field on the SYN had arrived unchanged.
> 
> Signed-off-by: Chia-Yu Chang <[email protected]>

This looks like a fix for an incorrect behavior introduced by a previous
AccECN patch. If so, please add a suitable fixes tag. We accept such
tags even for net-next material, and it's better to explicitly call out
needed fixes.

Thanks,

Paolo


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