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Date:   Sun, 17 Feb 2019 14:21:33 -0500
From:   Sasha Levin <>
To:     Alakesh Haloi <>
Cc:, "David S. Miller" <>,
        Alexey Kuznetsov <>,
        Hideaki YOSHIFUJI <>,
        Eric Dumazet <>,,
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 <>
>Cc: Wei Wang <>
>Signed-off-by: David S. Miller <>
>[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 <>
>Cc: Alexey Kuznetsov <>
>Cc: Hideaki YOSHIFUJI <>
>Cc: Eric Dumazet <>
>Cc: <> # 4.14.x

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


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