netdev - Re: [PATCH net-next 01/10] tcp: add tp->tcp

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Message-ID: <CADVnQy=PLNSGSqptnAmhbxb5JM_WmUW3YtzSL-Nb1kFRTVS+kw@mail.gmail.com>
Date:   Tue, 25 Apr 2017 13:49:00 -0400
From:   Neal Cardwell <ncardwell@...gle.com>
To:     Eric Dumazet <edumazet@...gle.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Soheil Hassas Yeganeh <soheil@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH net-next 01/10] tcp: add tp->tcp_mstamp field

On Tue, Apr 25, 2017 at 1:15 PM, Eric Dumazet <edumazet@...gle.com> wrote:
> We want to use precise timestamps in TCP stack, but we do not
> want to call possibly expensive kernel time services too often.
>
> tp->tcp_mstamp is guaranteed to be updated once per incoming packet.
>
> We will use it in the following patches, removing specific
> skb_mstamp_get() calls, and removing ack_time from
> struct tcp_sacktag_state.
>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> ---

This series is great! Thanks, Eric!

Acked-by: Neal Cardwell <ncardwell@...gle.com>

neal