f01cc58c18
Add support to multiple RSS contexts. Resources of the non-default RSS contexts are allocated and created on demand. Each RSS context can be controlled and configured separately, via the implemented ethtool ops. Here we limit the num of total contexts to 16. We do not enforce any kind of new limitation over the indirection table content. More specifically, two separate contexts can be configured to fully or partially point to the same set of receive rings. The default RSS context (index 0) is created with its full set of TIRs. All other contexts are created with an empty set, then TIRs are added upon first usage when steering rules are added. We use a reference counting mechanism to make sure an RSS context is not removed before the rules pointing to it. Block ethtool set_channels operations when multiple RSS contexts exist, as currently the kernel doesn't protect against inconsistent channels configs that break non-default RSS contexts. Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.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 Restructured Text 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.