On 07/18/2018 01:56 PM, Yuchung Cheng wrote:
> Per DCTCP RFC8257 (Section 3.2) the ACK reflecting the CE status change
> has to be sent immediately so the sender can respond quickly:
>
> """ When receiving packets, the CE codepoint MUST be processed as follows:
>
> 1. If the CE codepoint is set and DCTCP.CE is false, set DCTCP.CE to
> true and send an immediate ACK.
>
> 2. If the CE codepoint is not set and DCTCP.CE is true, set DCTCP.CE
> to false and send an immediate ACK.
> """
>
> Previously DCTCP implementation may continue to delay the ACK. This
> patch fixes that to implement the RFC by forcing an immediate ACK.
Oh well, more ACK packets ;)
Signed-off-by: Eric Dumazet <eduma...@google.com>
