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Gregory Herrero cfddf4af22 i40e: validate ring_len parameter against hardware-specific values 
[ Upstream commit 6994283421 ]

The maximum number of descriptors supported by the hardware is
hardware-dependent and can be retrieved using
i40e_get_max_num_descriptors(). Move this function to a shared header
and use it when checking for valid ring_len parameter rather than using
hardcoded value.

By fixing an over-acceptance issue, behavior change could be seen where
ring_len could now be rejected while configuring rx and tx queues if its
size is larger than the hardware-dependent maximum number of
descriptors.

Fixes: 55d225670d ("i40e: add validation for ring_len param")
Signed-off-by: Gregory Herrero <gregory.herrero@oracle.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-01-19 13:09:55 +01:00
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README 

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.