From 9ce7deff92e89b1807d0968c0b319d26361a72a6 Mon Sep 17 00:00:00 2001
From: Mat Martineau <mathew.j.martineau@linux.intel.com>
Date: Tue, 3 Nov 2020 11:05:08 -0800
Subject: [PATCH] docs: networking: mptcp: Add MPTCP sysctl entries
Describe the two MPTCP sysctls, what the values mean, and the default
settings.
Acked-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
Documentation/networking/index.rst | 1 +
Documentation/networking/mptcp-sysctl.rst | 26 +++++++++++++++++++++++
MAINTAINERS | 1 +
3 files changed, 28 insertions(+)
create mode 100644 Documentation/networking/mptcp-sysctl.rst
diff --git a/Documentation/networking/index.rst b/Documentation/networking/index.rst
index 63ef386afd0ab..70c71c9206e2b 100644
--- a/Documentation/networking/index.rst
+++ b/Documentation/networking/index.rst
@@ -70,6 +70,7 @@ Contents:
lapb-module
mac80211-injection
mpls-sysctl
+ mptcp-sysctl
multiqueue
netconsole
netdev-features
diff --git a/Documentation/networking/mptcp-sysctl.rst b/Documentation/networking/mptcp-sysctl.rst
new file mode 100644
index 0000000000000..6af0196c4297c
--- /dev/null
+++ b/Documentation/networking/mptcp-sysctl.rst
@@ -0,0 +1,26 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+=====================
+MPTCP Sysfs variables
+=====================
+
+/proc/sys/net/mptcp/* Variables
+===============================
+
+enabled - INTEGER
+ Control whether MPTCP sockets can be created.
+
+ MPTCP sockets can be created if the value is nonzero. This is
+ a per-namespace sysctl.
+
+ Default: 1
+
+add_addr_timeout - INTEGER (seconds)
+ Set the timeout after which an ADD_ADDR control message will be
+ resent to an MPTCP peer that has not acknowledged a previous
+ ADD_ADDR message.
+
+ The default value matches TCP_RTO_MAX. This is a per-namespace
+ sysctl.
+
+ Default: 120
diff --git a/MAINTAINERS b/MAINTAINERS
index 17f5571788c9a..badaaa815aa36 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12265,6 +12265,7 @@ L: mptcp@lists.01.org
S: Maintained
W: https://github.com/multipath-tcp/mptcp_net-next/wiki
B: https://github.com/multipath-tcp/mptcp_net-next/issues
+F: Documentation/networking/mptcp-sysctl.rst
F: include/net/mptcp.h
F: include/uapi/linux/mptcp.h
F: net/mptcp/
--
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