78 lines
2.2 KiB
ReStructuredText
78 lines
2.2 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
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=====================
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MPTCP Sysfs variables
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=====================
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/proc/sys/net/mptcp/* Variables
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===============================
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enabled - BOOLEAN
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Control whether MPTCP sockets can be created.
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MPTCP sockets can be created if the value is 1. This is a
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per-namespace sysctl.
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Default: 1 (enabled)
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add_addr_timeout - INTEGER (seconds)
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Set the timeout after which an ADD_ADDR control message will be
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resent to an MPTCP peer that has not acknowledged a previous
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ADD_ADDR message.
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The default value matches TCP_RTO_MAX. This is a per-namespace
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sysctl.
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Default: 120
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checksum_enabled - BOOLEAN
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Control whether DSS checksum can be enabled.
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DSS checksum can be enabled if the value is nonzero. This is a
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per-namespace sysctl.
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Default: 0
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allow_join_initial_addr_port - BOOLEAN
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Allow peers to send join requests to the IP address and port number used
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by the initial subflow if the value is 1. This controls a flag that is
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sent to the peer at connection time, and whether such join requests are
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accepted or denied.
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Joins to addresses advertised with ADD_ADDR are not affected by this
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value.
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This is a per-namespace sysctl.
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Default: 1
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pm_type - INTEGER
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Set the default path manager type to use for each new MPTCP
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socket. In-kernel path management will control subflow
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connections and address advertisements according to
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per-namespace values configured over the MPTCP netlink
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API. Userspace path management puts per-MPTCP-connection subflow
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connection decisions and address advertisements under control of
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a privileged userspace program, at the cost of more netlink
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traffic to propagate all of the related events and commands.
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This is a per-namespace sysctl.
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* 0 - In-kernel path manager
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* 1 - Userspace path manager
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Default: 0
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stale_loss_cnt - INTEGER
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The number of MPTCP-level retransmission intervals with no traffic and
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pending outstanding data on a given subflow required to declare it stale.
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The packet scheduler ignores stale subflows.
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A low stale_loss_cnt value allows for fast active-backup switch-over,
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an high value maximize links utilization on edge scenarios e.g. lossy
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link with high BER or peer pausing the data processing.
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This is a per-namespace sysctl.
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Default: 4
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