1 .. SPDX-License-Identifier: GPL-2.0
7 /proc/sys/net/mptcp/* Variables
8 ===============================
11 Control whether MPTCP sockets can be created.
13 MPTCP sockets can be created if the value is 1. This is a
18 add_addr_timeout - INTEGER (seconds)
19 Set the timeout after which an ADD_ADDR control message will be
20 resent to an MPTCP peer that has not acknowledged a previous
23 The default value matches TCP_RTO_MAX. This is a per-namespace
28 checksum_enabled - BOOLEAN
29 Control whether DSS checksum can be enabled.
31 DSS checksum can be enabled if the value is nonzero. This is a
36 allow_join_initial_addr_port - BOOLEAN
37 Allow peers to send join requests to the IP address and port number used
38 by the initial subflow if the value is 1. This controls a flag that is
39 sent to the peer at connection time, and whether such join requests are
42 Joins to addresses advertised with ADD_ADDR are not affected by this
45 This is a per-namespace sysctl.
51 Set the default path manager type to use for each new MPTCP
52 socket. In-kernel path management will control subflow
53 connections and address advertisements according to
54 per-namespace values configured over the MPTCP netlink
55 API. Userspace path management puts per-MPTCP-connection subflow
56 connection decisions and address advertisements under control of
57 a privileged userspace program, at the cost of more netlink
58 traffic to propagate all of the related events and commands.
60 This is a per-namespace sysctl.
62 * 0 - In-kernel path manager
63 * 1 - Userspace path manager
67 stale_loss_cnt - INTEGER
68 The number of MPTCP-level retransmission intervals with no traffic and
69 pending outstanding data on a given subflow required to declare it stale.
70 The packet scheduler ignores stale subflows.
71 A low stale_loss_cnt value allows for fast active-backup switch-over,
72 an high value maximize links utilization on edge scenarios e.g. lossy
73 link with high BER or peer pausing the data processing.
75 This is a per-namespace sysctl.