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Previously, TX arbitration prioritized queues based on the TC they were mapped to. A queue mapped to TC 3 had higher priority than one mapped to TC 0. To improve code reuse for upcoming patches and align with typical NIC behavior, this patch updates the logic to prioritize higher queue numbers when mqprio is used. As a result, queue 0 becomes the lowest priority and queue 3 becomes the highest. This patch also introduces igc_tsn_is_tc_to_queue_priority_ordered() to preserve the original TC-based priority rule and reject configurations where a higher TC maps to a lower queue offset. Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: Faizal Rahim <faizal.abdul.rahim@linux.intel.com> Tested-by: Mor Bar-Gabay <morx.bar.gabay@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
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.