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| author | Geliang Tang <tanggeliang@kylinos.cn> | 2025-08-23 10:55:34 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-28 16:26:16 +0200 |
| commit | 48b5547d896c9e353ecbe12eb63376d33f81bc19 (patch) | |
| tree | 43570e6eeada4c5029b1d6ed60eb1c736107ebba /Documentation | |
| parent | 901f62efd6e855f93d8b1175540f29f4dc45ba55 (diff) | |
| download | linux-48b5547d896c9e353ecbe12eb63376d33f81bc19.tar.gz linux-48b5547d896c9e353ecbe12eb63376d33f81bc19.tar.bz2 linux-48b5547d896c9e353ecbe12eb63376d33f81bc19.zip | |
mptcp: disable add_addr retransmission when timeout is 0
[ Upstream commit f5ce0714623cffd00bf2a83e890d09c609b7f50a ]
When add_addr_timeout was set to 0, this caused the ADD_ADDR to be
retransmitted immediately, which looks like a buggy behaviour. Instead,
interpret 0 as "no retransmissions needed".
The documentation is updated to explicitly state that setting the timeout
to 0 disables retransmission.
Fixes: 93f323b9cccc ("mptcp: add a new sysctl add_addr_timeout")
Cc: stable@vger.kernel.org
Suggested-by: Matthieu Baerts <matttbe@kernel.org>
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250815-net-mptcp-misc-fixes-6-17-rc2-v1-5-521fe9957892@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
[ Apply to net/mptcp/pm_netlink.c , structural changes in mptcp_pm_alloc_anno_list ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/networking/mptcp-sysctl.rst | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/networking/mptcp-sysctl.rst b/Documentation/networking/mptcp-sysctl.rst index 213510698014..722b4395e91b 100644 --- a/Documentation/networking/mptcp-sysctl.rst +++ b/Documentation/networking/mptcp-sysctl.rst @@ -20,6 +20,8 @@ add_addr_timeout - INTEGER (seconds) 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. |