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The qpl_cfg struct was used to make sure that no two different queues are using QPL with the same qpl_id. We can remove that qpl_cfg struct since now the qpl_ids map with the queues respectively as follows: For tx queues: qpl_id = tx_qid For rx queues: qpl_id = max_tx_queues + rx_qid And when XDP is used, it will need the user to reduce the tx queues to be at most half of the max_tx_queues. Then it will use the same number of tx queues starting from the end of existing tx queues for XDP. So the XDP queues will not exceed the max_tx_queues range and will not overlap with the rx queues, where the qpl_ids will not have overlapping too. Considering of that, we remove the qpl_cfg struct to get the qpl_id directly based on the queue id. Unless we are erroneously allocating a rx/tx queue that has already been allocated, we would never allocate the qpl with the same qpl_id twice. In that case, it should fail much earlier than the QPL assignment. Suggested-by: Praveen Kaligineedi <pkaligineedi@google.com> Signed-off-by: Ziwei Xiao <ziweixiao@google.com> Reviewed-by: Harshitha Ramamurthy <hramamurthy@google.com> Reviewed-by: Shailend Chand <shailend@google.com> Link: https://lore.kernel.org/r/20240417205757.778551-1-ziweixiao@google.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.