diff options
Diffstat (limited to 'Documentation/networking/mptcp-sysctl.rst')
| -rw-r--r-- | Documentation/networking/mptcp-sysctl.rst | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/Documentation/networking/mptcp-sysctl.rst b/Documentation/networking/mptcp-sysctl.rst index 95598c21fc8e..5bfab01eff5a 100644 --- a/Documentation/networking/mptcp-sysctl.rst +++ b/Documentation/networking/mptcp-sysctl.rst @@ -30,6 +30,10 @@ allow_join_initial_addr_port - BOOLEAN Default: 1 +available_path_managers - STRING + Shows the available path managers choices that are registered. More + path managers may be available, but not loaded. + available_schedulers - STRING Shows the available schedulers choices that are registered. More packet schedulers may be available, but not loaded. @@ -41,7 +45,7 @@ blackhole_timeout - INTEGER (seconds) MPTCP is re-enabled and will reset to the initial value when the blackhole issue goes away. - 0 to disable the blackhole detection. + 0 to disable the blackhole detection. This is a per-namespace sysctl. Default: 3600 @@ -72,6 +76,23 @@ enabled - BOOLEAN Default: 1 (enabled) +path_manager - STRING + Set the default path manager name to use for each new MPTCP + socket. In-kernel path management will control subflow + connections and address advertisements according to + per-namespace values configured over the MPTCP netlink + API. Userspace path management puts per-MPTCP-connection subflow + connection decisions and address advertisements under control of + a privileged userspace program, at the cost of more netlink + traffic to propagate all of the related events and commands. + + This is a per-namespace sysctl. + + * "kernel" - In-kernel path manager + * "userspace" - Userspace path manager + + Default: "kernel" + pm_type - INTEGER Set the default path manager type to use for each new MPTCP socket. In-kernel path management will control subflow @@ -84,6 +105,8 @@ pm_type - INTEGER This is a per-namespace sysctl. + Deprecated since v6.15, use path_manager instead. + * 0 - In-kernel path manager * 1 - Userspace path manager @@ -108,3 +131,19 @@ stale_loss_cnt - INTEGER This is a per-namespace sysctl. Default: 4 + +syn_retrans_before_tcp_fallback - INTEGER + The 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: + + * The initial SYN with MPTCP support + * This number of SYN retransmitted with MPTCP support + * The next SYN retransmissions will be without MPTCP support + + 0 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. + + Default: 2 |