netdev - Re: [PATCH net-next] tcp: better validation of received ack sequences

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Date:   Thu, 25 May 2017 12:48:17 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     eric.dumazet@...il.com
Cc:     p.fiterau-brostean@...ence.ru.nl, netdev@...r.kernel.org,
        F.Vaandrager@...ru.nl, ncardwell@...gle.com, ycheng@...gle.com,
        soheil@...gle.com
Subject: Re: [PATCH net-next] tcp: better validation of received ack
 sequences

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Tue, 23 May 2017 15:24:46 -0700

> Add a FLAG_NO_CHALLENGE_ACK so that tcp_rcv_state_process()
> can choose to send a challenge ACK and discard the packet instead
> of wrongly change socket state.

Applied, but the tests end up being double-negatives so it might
have been easier to understand if the flag was a positive rather
than a negative value.