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c30fd916c4
Refactor the ethtool ring parameter configuration logic to address two
issues: unnecessary queue resets and lost configuration changes when
the interface is down.
Previously, `gve_set_ringparam` could trigger multiple queue
destructions and recreations for a single command, as different settings
(e.g., header split, ring sizes) were applied one by one. Furthermore,
if the interface was down, any changes made via ethtool were discarded
instead of being saved for the next time the interface was brought up.
This patch centralizes the configuration logic. Individual functions
like `gve_set_hsplit_config` are modified to only validate and stage
changes in a temporary config struct.
The main `gve_set_ringparam` function now gathers all staged changes
and applies them as a single, combined configuration:
1. If the interface is up, it calls `gve_adjust_config` once.
2. If the interface is down, it saves the settings directly to the
driver's private struct, ensuring they persist and are used when
the interface is brought back up.
Signed-off-by: Ankit Garg <nktgrg@google.com>
Reviewed-by: Harshitha Ramamurthy <hramamurthy@google.com>
Reviewed-by: Jordan Rhee <jordanrhee@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Joshua Washington <joshwash@google.com>
Link: https://patch.msgid.link/20251017012614.3631351-1-joshwash@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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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.