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-rw-r--r--Documentation/networking/index.rst1
-rw-r--r--Documentation/networking/mptcp-sysctl.rst26
-rw-r--r--MAINTAINERS1
3 files changed, 28 insertions, 0 deletions
diff --git a/Documentation/networking/index.rst b/Documentation/networking/index.rst
index 63ef386afd0a..70c71c9206e2 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 000000000000..6af0196c4297
--- /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 17f5571788c9..badaaa815aa3 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/