netdev - Re: [PATCH] tcp: Namespace-ify sysctl_tcp_rmem and sysctl_tcp

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Message-ID: <20190217192133.GN10616@sasha-vm>
Date:   Sun, 17 Feb 2019 14:21:33 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     Alakesh Haloi <alakeshh@...zon.com>
Cc:     stable@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Eric Dumazet <edumazet@...gle.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tcp: Namespace-ify sysctl_tcp_rmem and sysctl_tcp_wmem

On Thu, Feb 14, 2019 at 01:12:08AM +0000, Alakesh Haloi wrote:
>[ Upstream commit 356d1833b638bd465672aefeb71def3ab93fc17d ]
>
>Note that when a new netns is created, it inherits its
>sysctl_tcp_rmem and sysctl_tcp_wmem from initial netns.
>
>This change is needed so that we can refine TCP rcvbuf autotuning,
>to take RTT into consideration.
>
>Signed-off-by: Eric Dumazet <edumazet@...gle.com>
>Cc: Wei Wang <weiwan@...gle.com>
>Signed-off-by: David S. Miller <davem@...emloft.net>
>[alakeshh: backport to v4.14: The patch does not apply to v4.14
>directly and hence needed manual backport. Function signature for
>the function tcp_select_initial_window had to be changed to be able
>to pass pointer to struct sock.]
>Signed-off-by: Alakesh Haloi <alakeshh@...zon.com>
>Cc: Alexey Kuznetsov <kuznet@....inr.ac.ru>
>Cc: Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>
>Cc: Eric Dumazet <edumazet@...gle.com>
>Cc: <stable@...r.kernel.org> # 4.14.x

What does this fix? This is a new interface...

--
Thanks,
Sasha