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a87a561b80
All vports not explicitly members of a group with QoS enabled are part of the internal esw group0, except when the hw reports that groups aren't supported (log_esw_max_sched_depth == 0). This creates corner cases in the code, which has to make sure that this case is supported. Additionally, the groups are about to be moved out of eswitches, and group0 being NULL creates additional complications there. This patch makes sure to always create group0, even if max sched depth is 0. In that case, a software-only group0 is created referencing the root TSAR. Vports can point to this group when their QoS is enabled and they'll be attached to the root TSAR directly. This eliminates corner cases in the code by offering the guarantee that if qos is enabled, vport->qos.group is non-NULL. Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Signed-off-by: Paolo Abeni <pabeni@redhat.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.