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Linux kernel source tree
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Mat Martineau says: ==================== mptcp: Prepare MPTCP packet scheduler for BPF extension The kernel's MPTCP packet scheduler has, to date, been a one-size-fits all algorithm that is hard-coded. It attempts to balance latency and throughput when transmitting data across multiple TCP subflows, and has some limited tunability through sysctls. It has been a long-term goal of the Linux MPTCP community to support customizable packet schedulers for use cases that need to make different trade-offs regarding latency, throughput, redundancy, and other metrics. BPF is well-suited for configuring customized, per-packet scheduling decisions without having to modify the kernel or manage out-of-tree kernel modules. The first steps toward implementing BPF packet schedulers are to update the existing MPTCP transmit loops to allow more flexible scheduling decisions, and to add infrastructure for swappable packet schedulers. The existing scheduling algorithm remains the default. BPF-related changes will be in a future patch series. This code has been in the MPTCP development tree for quite a while, undergoing testing in our CI and community. Patches 1 and 2 refactor the transmit code and do some related cleanup. Patches 3-9 add infrastructure for registering and calling multiple schedulers. Patch 10 connects the in-kernel default scheduler to the new infrastructure. ==================== Link: https://lore.kernel.org/r/20230821-upstream-net-next-20230818-v1-0-0c860fb256a8@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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| README | ||
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 Restructured Text 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.