netdev - Re: [net-next] tcp: do tcp_mstamp_refresh before retransmits on TSQ handler

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Date:   Sun, 22 Oct 2017 21:31:03 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Koichiro Den <den@...ipeden.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, ncardwell@...gle.com
Subject: Re: [net-next] tcp: do tcp_mstamp_refresh before retransmits on TSQ
 handler

On Mon, 2017-10-23 at 13:28 +0900, Koichiro Den wrote:

> Indeed, meaning that tcp_clean_rtx_queue implementation never takes.
> But for me it seems that there is some possibility RACK algorithm will take it.

As long as tp->tcp_mstamp is monotonically increasing (and it is ;) ),
RACK will behave properly.

I am not sure we need to discuss this forever frankly ;)