Re: [PATCH] tcp: Namespace-ify sysctl_tcp_rmem and sysctl_tcp_wmem

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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@xxxxxxxxxx>
Cc: Wei Wang <weiwan@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
[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@xxxxxxxxxx>
Cc: Alexey Kuznetsov <kuznet@xxxxxxxxxxxxx>
Cc: Hideaki YOSHIFUJI <yoshfuji@xxxxxxxxxxxxxx>
Cc: Eric Dumazet <edumazet@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # 4.14.x

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

--
Thanks,
Sasha



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