This series adds ethtool get/set support for the RSS hash key in the igb driver. - `ethtool -x <dev>` to display the RSS key - `ethtool -X <dev> hkey <key>` to configure the RSS key
Without patch: # ethtool -x $DEV | grep key -A1 RSS hash key: Operation not supported # ethtool -X $DEV hkey 00:00:00:00:00:00:00:00:00:00:00:00:000 Cannot set RX flow hash configuration: Hash key setting not supported With patch: # ethtool -x $DEV | grep key -A1 RSS hash key: 86:5d:11:56:bd:6f:20:38:3b:f8:bb:df:00:3a:b0:24:95:9f:f9:f4:25:a3:01:3e:4a:15:d6:7c:4d:af:39:7e:4a:95:f2:fd:f6:b6:26:f7 # ethtool -X $DEV hkey 00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00 # ethtool -x $DEV | grep key -A1 RSS hash key: 00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00 Takashi Kozu (3): Store the RSS key inside struct igb_adapter and introduce the igb: expose RSS key via ethtool get_rxfh igb: allow configuring RSS key via ethtool set_rxfh drivers/net/ethernet/intel/igb/igb.h | 4 + drivers/net/ethernet/intel/igb/igb_ethtool.c | 77 +++++++++++++------- drivers/net/ethernet/intel/igb/igb_main.c | 7 +- 3 files changed, 58 insertions(+), 30 deletions(-) -- 2.51.1
