hfsphinx.addnodesdocument)}( rawsourcechildren]( translations LanguagesNode)}(hhh](h pending_xref)}(hhh]docutils.nodesTextChinese (Simplified)}parenthsba attributes}(ids]classes]names]dupnames]backrefs] refdomainstdreftypedoc reftarget+/translations/zh_CN/networking/mptcp-sysctlmodnameN classnameN refexplicitutagnamehhh ubh)}(hhh]hChinese (Traditional)}hh2sbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget+/translations/zh_TW/networking/mptcp-sysctlmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hItalian}hhFsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget+/translations/it_IT/networking/mptcp-sysctlmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hJapanese}hhZsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget+/translations/ja_JP/networking/mptcp-sysctlmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hKorean}hhnsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget+/translations/ko_KR/networking/mptcp-sysctlmodnameN classnameN refexplicituh1hhh ubh)}(hhh]hSpanish}hhsbah}(h]h ]h"]h$]h&] refdomainh)reftypeh+ reftarget+/translations/sp_SP/networking/mptcp-sysctlmodnameN classnameN refexplicituh1hhh ubeh}(h]h ]h"]h$]h&]current_languageEnglishuh1h hh _documenthsourceNlineNubhcomment)}(h SPDX-License-Identifier: GPL-2.0h]h SPDX-License-Identifier: GPL-2.0}hhsbah}(h]h ]h"]h$]h&] xml:spacepreserveuh1hhhhhhE/var/lib/git/docbuild/linux/Documentation/networking/mptcp-sysctl.rsthKubhsection)}(hhh](htitle)}(hMPTCP Sysfs variablesh]hMPTCP Sysfs variables}(hhhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhhhhhKubh)}(hhh](h)}(h/proc/sys/net/mptcp/* Variablesh]h/proc/sys/net/mptcp/* Variables}(hhhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhhhhhKubhdefinition_list)}(hhh](hdefinition_list_item)}(hX*add_addr_timeout - INTEGER (seconds) Set the timeout after which an ADD_ADDR control message will be resent to an MPTCP peer that has not acknowledged a previous ADD_ADDR message. Do not retransmit if set to 0. The default value matches TCP_RTO_MAX. This is a per-namespace sysctl. Default: 120 h](hterm)}(h$add_addr_timeout - INTEGER (seconds)h]h$add_addr_timeout - INTEGER (seconds)}(hhhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhhubh definition)}(hhh](h paragraph)}(hSet 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.h]hSet 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.}(hhhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK hhubh)}(hDo not retransmit if set to 0.h]hDo not retransmit if set to 0.}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhhubh)}(hFThe default value matches TCP_RTO_MAX. This is a per-namespace sysctl.h]hFThe default value matches TCP_RTO_MAX. This is a per-namespace sysctl.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhhubh)}(h Default: 120h]h Default: 120}(hj&hhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhhubeh}(h]h ]h"]h$]h&]uh1hhhubeh}(h]h ]h"]h$]h&]uh1hhhhKhhubh)}(hXallow_join_initial_addr_port - BOOLEAN Allow peers to send join requests to the IP address and port number used by the initial subflow if the value is 1. This controls a flag that is sent to the peer at connection time, and whether such join requests are accepted or denied. Joins to addresses advertised with ADD_ADDR are not affected by this value. This is a per-namespace sysctl. Default: 1 h](h)}(h&allow_join_initial_addr_port - BOOLEANh]h&allow_join_initial_addr_port - BOOLEAN}(hjDhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK!hj@ubh)}(hhh](h)}(hAllow peers to send join requests to the IP address and port number used by the initial subflow if the value is 1. This controls a flag that is sent to the peer at connection time, and whether such join requests are accepted or denied.h]hAllow peers to send join requests to the IP address and port number used by the initial subflow if the value is 1. This controls a flag that is sent to the peer at connection time, and whether such join requests are accepted or denied.}(hjUhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjRubh)}(hKJoins to addresses advertised with ADD_ADDR are not affected by this value.h]hKJoins to addresses advertised with ADD_ADDR are not affected by this value.}(hjchhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjRubh)}(hThis is a per-namespace sysctl.h]hThis is a per-namespace sysctl.}(hjqhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjRubh)}(h Default: 1h]h Default: 1}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK!hjRubeh}(h]h ]h"]h$]h&]uh1hhj@ubeh}(h]h ]h"]h$]h&]uh1hhhhK!hhhhubh)}(havailable_path_managers - STRING Shows the available path managers choices that are registered. More path managers may be available, but not loaded. h](h)}(h available_path_managers - STRINGh]h available_path_managers - STRING}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK%hjubh)}(hhh]h)}(hsShows the available path managers choices that are registered. More path managers may be available, but not loaded.h]hsShows the available path managers choices that are registered. More path managers may be available, but not loaded.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK$hjubah}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]uh1hhhhK%hhhhubh)}(havailable_schedulers - STRING Shows the available schedulers choices that are registered. More packet schedulers may be available, but not loaded. h](h)}(havailable_schedulers - STRINGh]havailable_schedulers - STRING}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK)hjubh)}(hhh]h)}(htShows the available schedulers choices that are registered. More packet schedulers may be available, but not loaded.h]htShows the available schedulers choices that are registered. More packet schedulers may be available, but not loaded.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK(hjubah}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]uh1hhhhK)hhhhubh)}(hXblackhole_timeout - INTEGER (seconds) Initial time period in second to disable MPTCP on active MPTCP sockets when a MPTCP firewall blackhole issue happens. This time period will grow exponentially when more blackhole issues get detected right after MPTCP is re-enabled and will reset to the initial value when the blackhole issue goes away. 0 to disable the blackhole detection. This is a per-namespace sysctl. Default: 3600 h](h)}(h%blackhole_timeout - INTEGER (seconds)h]h%blackhole_timeout - INTEGER (seconds)}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK4hjubh)}(hhh](h)}(hX.Initial time period in second to disable MPTCP on active MPTCP sockets when a MPTCP firewall blackhole issue happens. This time period will grow exponentially when more blackhole issues get detected right after MPTCP is re-enabled and will reset to the initial value when the blackhole issue goes away.h]hX.Initial time period in second to disable MPTCP on active MPTCP sockets when a MPTCP firewall blackhole issue happens. This time period will grow exponentially when more blackhole issues get detected right after MPTCP is re-enabled and will reset to the initial value when the blackhole issue goes away.}(hj hhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK,hj ubh)}(hE0 to disable the blackhole detection. This is a per-namespace sysctl.h]hE0 to disable the blackhole detection. This is a per-namespace sysctl.}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK2hj ubh)}(h Default: 3600h]h Default: 3600}(hj(hhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK4hj ubeh}(h]h ]h"]h$]h&]uh1hhjubeh}(h]h ]h"]h$]h&]uh1hhhhK4hhhhubh)}(hchecksum_enabled - BOOLEAN Control whether DSS checksum can be enabled. DSS checksum can be enabled if the value is nonzero. This is a per-namespace sysctl. Default: 0 h](h)}(hchecksum_enabled - BOOLEANh]hchecksum_enabled - BOOLEAN}(hjFhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhK= 128 means that all SYN retransmissions will keep the MPTCP options. A lower number might increase false-positive MPTCP blackholes detections. This is a per-namespace sysctl. Default: 2h](h)}(h)syn_retrans_before_tcp_fallback - INTEGERh]h)syn_retrans_before_tcp_fallback - INTEGER}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjubh)}(hhh](h)}(hThe number of SYN + MP_CAPABLE retransmissions before falling back to TCP, i.e. dropping the MPTCP options. In other words, if all the packets are dropped on the way, there will be:h]hThe number of SYN + MP_CAPABLE retransmissions before falling back to TCP, i.e. dropping the MPTCP options. In other words, if all the packets are dropped on the way, there will be:}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjubjU)}(hhh](jZ)}(h"The initial SYN with MPTCP supporth]h)}(hjh]h"The initial SYN with MPTCP support}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjubah}(h]h ]h"]h$]h&]uh1jYhjubjZ)}(h3This number of SYN retransmitted with MPTCP supporth]h)}(hjh]h3This number of SYN retransmitted with MPTCP support}(hjhhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhjubah}(h]h ]h"]h$]h&]uh1jYhjubjZ)}(h;The next SYN retransmissions will be without MPTCP support h]h)}(h:The next SYN retransmissions will be without MPTCP supporth]h:The next SYN retransmissions will be without MPTCP support}(hj+hhhNhNubah}(h]h ]h"]h$]h&]uh1hhhhKhj'ubah}(h]h ]h"]h$]h&]uh1jYhjubeh}(h]h ]h"]h$]h&]jjuh1jThhhKhjubh)}(h0 means the first retransmission will be done without MPTCP options. >= 128 means that all SYN retransmissions will keep the MPTCP options. A lower number might increase false-positive MPTCP blackholes detections. This is a per-namespace sysctl.h]h0 means the first retransmission will be done without MPTCP options. >= 128 means that all SYN retransmissions will keep the MPTCP options. A lower number might increase false-positive MPTCP blackholes detections. 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