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Mark Bloch says: ==================== net/mlx5: HWS, Optimize matchers ICM usage This series optimizes ICM usage for unidirectional rules and empty matchers and with the last patch we make hardware steering the default FDB steering provider for NICs that don't support software steering. Hardware steering (HWS) uses a type of rule table container (RTC) that is unidirectional, so matchers consist of two RTCs to accommodate bidirectional rules. This small series enables resizing the two RTCs independently by tracking the number of rules separately. For extreme cases where all rules are unidirectional, this results in saving close to half the memory footprint. Results for inserting 1M unidirectional rules using a simple module: Pages Memory Before this patch: 300k 1.5GiB After this patch: 160k 900MiB The 'Pages' column measures the number of 4KiB pages the device requests for itself (the ICM). The 'Memory' column is the difference between peak usage and baseline usage (before starting the test) as reported by `free -h`. In addition, second to last patch of the series handles a case where all the matcher's rules were deleted: the large RTCs of the matcher are no longer required, and we can save some more ICM by shrinking the matcher to its initial size. Finally the last patch makes hardware steering the default mode when in swichdev for NICs that don't have software steering support. ==================== Link: https://patch.msgid.link/20250703185431.445571-1-mbloch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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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.