mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-14 01:49:20 -04:00
b90c7ca4f9
Matthieu Baerts says: ==================== mptcp: make ADD_ADDR retransmission timeout adaptive Currently, the MPTCP ADD_ADDR notifications are retransmitted after a fixed timeout controlled by the net.mptcp.add_addr_timeout sysctl knob, if the corresponding "echo" packets are not received before. This can be too slow (or too quick), especially with a too cautious default value set to 2 minutes. - Patch 1: make ADD_ADDR retransmission timeout adaptive, using the TCP's retransmission timeout. The corresponding sysctl knob is now used as a maximum value. - Patch 2: now that these ADD_ADDR retransmissions can happen faster, all MPTCP Join subtests checking ADD_ADDR counters accept more ADD_ADDR than expected (if any). This is aligned with the previous behaviour, when the ADD_ADDR RTO was lowered down to 1 second. - Patch 3: Some CIs have reported that some MPTCP Join signalling tests were unstable. It seems that it is due to the time it can take in slow environments to send a bunch of ADD_ADDR notifications and wait each time for their echo reply. Use a longer transfer to avoid such errors. v1: https://lore.kernel.org/d5397026-92eb-4a43-9534-954b43ab9305@kernel.org ==================== Link: https://patch.msgid.link/20250907-net-next-mptcp-add_addr-retrans-adapt-v1-0-824cc805772b@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.