[PATCH net-next 02/11] igc: expose RSS key via ethtool get_rxfh
From: Tony Nguyen <anthony.l.nguyen@intel.com>
Date: 2026-07-01 21:03:11
Subsystem:
intel ethernet drivers, networking drivers, the rest · Maintainers:
Tony Nguyen, Przemek Kitszel, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Kohei Enju <redacted> Implement igc_ethtool_get_rxfh_key_size() and extend igc_ethtool_get_rxfh() to return the RSS key to userspace. This can be tested using `ethtool -x <dev>`. Signed-off-by: Kohei Enju <redacted> Tested-by: Avigail Dahan <redacted> Reviewed-by: Vitaly Lifshits <redacted> Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Aleksandr Loktionov <redacted> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> --- drivers/net/ethernet/intel/igc/igc_ethtool.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/intel/igc/igc_ethtool.c b/drivers/net/ethernet/intel/igc/igc_ethtool.c
index f01222f12776..0e76ffe7be65 100644
--- a/drivers/net/ethernet/intel/igc/igc_ethtool.c
+++ b/drivers/net/ethernet/intel/igc/igc_ethtool.c@@ -1502,6 +1502,11 @@ void igc_write_rss_indir_tbl(struct igc_adapter *adapter) } } +static u32 igc_ethtool_get_rxfh_key_size(struct net_device *netdev) +{ + return IGC_RSS_KEY_SIZE; +} + static u32 igc_ethtool_get_rxfh_indir_size(struct net_device *netdev) { return IGC_RETA_SIZE;
@@ -1514,10 +1519,13 @@ static int igc_ethtool_get_rxfh(struct net_device *netdev, int i; rxfh->hfunc = ETH_RSS_HASH_TOP; - if (!rxfh->indir) - return 0; - for (i = 0; i < IGC_RETA_SIZE; i++) - rxfh->indir[i] = adapter->rss_indir_tbl[i]; + + if (rxfh->indir) + for (i = 0; i < IGC_RETA_SIZE; i++) + rxfh->indir[i] = adapter->rss_indir_tbl[i]; + + if (rxfh->key) + memcpy(rxfh->key, adapter->rss_key, sizeof(adapter->rss_key)); return 0; }
@@ -2195,6 +2203,7 @@ static const struct ethtool_ops igc_ethtool_ops = { .get_rxnfc = igc_ethtool_get_rxnfc, .set_rxnfc = igc_ethtool_set_rxnfc, .get_rx_ring_count = igc_ethtool_get_rx_ring_count, + .get_rxfh_key_size = igc_ethtool_get_rxfh_key_size, .get_rxfh_indir_size = igc_ethtool_get_rxfh_indir_size, .get_rxfh = igc_ethtool_get_rxfh, .set_rxfh = igc_ethtool_set_rxfh,
--
2.47.1