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Channel doorbells are now also used by all channel CQs. A new 'uar' parameter is added to 'struct mlx5e_create_cq_param', which is then used in mlx5e_alloc_cq. A single UAR page has two TX doorbells and a single CQ doorbell, so every consecutive pair of 'struct mlx5_sq_bfreg' (TX doorbells) uses the same underlying 'struct mlx5_uars_page' (CQ doorbell). So by using c->bfreg->up, CQs from every consecutive channel pair will share the same CQ doorbell. Non-channel associated CQs keep using the global CQ doorbell. Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com> Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Simon Horman <horms@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.