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Tony Nguyen says: ==================== ixgbe: Multiple RSS bugfixes Joe Damato says: This series fixes two bugs I stumbled on with ixgbe: 1. The flow hash cannot be set manually with ethool at all. Patch 1/2 addresses this by fixing what appears to be a small bug in set_rxfh in ixgbe. See the commit message for more details. 2. Once the above patch is applied and the flow hash can be set, resetting the flow hash to default fails if the number of queues is greater than the number of queues supported by RSS. Other drivers (like i40e) will reset the flowhash to use the maximum number of queues supported by RSS even if the queue count configured is larger. In other words: some queues will not have packets distributed to them by the RSS hash if the queue count is too large. Patch 2/2 allows the user to reset ixgbe to default and the flowhash is set correctly to either the maximum number of queues supported by RSS or the configured queue count, whichever is smaller. I believe this is correct and it mimics the behavior of i40e; `ethtool -X $iface default` should probably always succeed even if all the queues cannot be utilized. See the commit message for more details and examples. I tested these on an ixgbe system I have access to and they appear to work as intended, but I would appreciate a review by the experts on this list :) * '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue: ixgbe: Enable setting RSS table to default values ixgbe: Allow flow hash to be set via ethtool ==================== Link: https://lore.kernel.org/r/20230420235000.2971509-1-anthony.l.nguyen@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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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.