igc: prepare for RSS key get/set support

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Store the RSS key inside struct igc_adapter and introduce the
igc_write_rss_key() helper function. This allows the driver to program
the RSSRK registers using a persistent RSS key, instead of using a
stack-local buffer in igc_setup_mrqc().

This is a preparation patch for adding RSS key get/set support in
subsequent changes, and no functional change is intended in this patch.

Signed-off-by: Kohei Enju <kohei@enjuk.jp>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Avigail Dahan <avigailx.dahan@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

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This commit is contained in:

Kohei Enju 2026-01-31 16:29:36 +00:00 • committed by Tony Nguyen

parent d6e8152974

commit 66731a51b1

3 changed files with 27 additions and 4 deletions

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3

drivers/net/ethernet/intel/igc/igc.h

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20

drivers/net/ethernet/intel/igc/igc_ethtool.c

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8

drivers/net/ethernet/intel/igc/igc_main.c

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