This is a note to let you know that I've just added the patch titled
tcp: fix tcp_rmem documentation
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tcp-fix-tcp_rmem-documentation.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1d1be91254bbdd189796041561fd430f7553bb88 Mon Sep 17 00:00:00 2001
From: Eric Dumazet <edumazet@xxxxxxxxxx>
Date: Wed, 10 Feb 2021 09:13:33 -0800
Subject: tcp: fix tcp_rmem documentation
From: Eric Dumazet <edumazet@xxxxxxxxxx>
commit 1d1be91254bbdd189796041561fd430f7553bb88 upstream.
tcp_rmem[1] has been changed to 131072, we should update the documentation
to reflect this.
Fixes: a337531b942b ("tcp: up initial rmem to 128KB and SYN rwin to around 64KB")
Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Reported-by: Zhibin Liu <zhibinliu@xxxxxxxxxx>
Cc: Yuchung Cheng <ycheng@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
Documentation/networking/ip-sysctl.rst | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
--- a/Documentation/networking/ip-sysctl.rst
+++ b/Documentation/networking/ip-sysctl.rst
@@ -630,16 +630,15 @@ tcp_rmem - vector of 3 INTEGERs: min, de
default: initial size of receive buffer used by TCP sockets.
This value overrides net.core.rmem_default used by other protocols.
- Default: 87380 bytes. This value results in window of 65535 with
- default setting of tcp_adv_win_scale and tcp_app_win:0 and a bit
- less for default tcp_app_win. See below about these variables.
+ Default: 131072 bytes.
+ This value results in initial window of 65535.
max: maximal size of receive buffer allowed for automatically
selected receiver buffers for TCP socket. This value does not override
net.core.rmem_max. Calling setsockopt() with SO_RCVBUF disables
automatic tuning of that socket's receive buffer size, in which
case this value is ignored.
- Default: between 87380B and 6MB, depending on RAM size.
+ Default: between 131072 and 6MB, depending on RAM size.
tcp_sack - BOOLEAN
Enable select acknowledgments (SACKS).
Patches currently in stable-queue which might be from edumazet@xxxxxxxxxx are
queue-5.10/net-fix-up-truesize-of-cloned-skb-in-skb_prepare_for_shift.patch
queue-5.10/tcp-fix-tcp_rmem-documentation.patch
