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The ETS handler performs the headroom configuration in three steps: first it resizes the buffers and adds any new ones. Then it redirects priorities to the new buffers. And finally it sets the size of the now-unused buffers to zero. This way no packet drops are introduced. This sort of careful approach will also be useful for configuring port buffer sizes and priority map by hand, through dcbnl_setbuffer. Therefore move the code from the DCB handler to the generic headroom function. Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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.