Commit 84eaf4359c36 ("net: ethtool: add get_rx_ring_count callback to
optimize RX ring queries") added specific support for GRXRINGS callback,
simplifying .get_rxnfc.

Remove the handling of GRXRINGS in .get_rxnfc() by moving it to the new
.get_rx_ring_count().

This simplifies the RX ring count retrieval and aligns the following
drivers with the new ethtool API for querying RX ring parameters.
  * emulex/benet
  * engleder/tsnep
  * mediatek
  * amazon/ena
  * microchip/lan743x
  * amd/xgbe
  * chelsio/cxgb4
  * wangxun/txgbe
  * cadence/macb

Part 1 is already merged in net-next and can be seen in
https://lore.kernel.org/all/20260109-grxring_big_v1-v1-0-a0f77f732006@debian.org/ (local)

PS: all of these change were compile-tested only.
---
Breno Leitao (9):
      net: benet: convert to use .get_rx_ring_count
      net: tsnep: convert to use .get_rx_ring_count
      net: mediatek: convert to use .get_rx_ring_count
      net: ena: convert to use .get_rx_ring_count
      net: lan743x: convert to use .get_rx_ring_count
      net: xgbe: convert to use .get_rx_ring_count
      net: cxgb4: convert to use .get_rx_ring_count
      net: macb: convert to use .get_rx_ring_count
      net: txgbe: convert to use .get_rx_ring_count

 drivers/net/ethernet/amazon/ena/ena_ethtool.c      | 22 +++------------
 drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c       | 15 +++--------
 drivers/net/ethernet/cadence/macb_main.c           | 11 +++++---
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_ethtool.c | 11 +++++---
 drivers/net/ethernet/emulex/benet/be_ethtool.c     | 31 ++++++----------------
 drivers/net/ethernet/engleder/tsnep_ethtool.c      | 11 +++++---
 drivers/net/ethernet/mediatek/mtk_eth_soc.c        | 15 ++++++-----
 drivers/net/ethernet/microchip/lan743x_ethtool.c   | 13 +++------
 drivers/net/ethernet/wangxun/txgbe/txgbe_ethtool.c | 12 ++++++---
 9 files changed, 58 insertions(+), 83 deletions(-)
---
base-commit: cc75d43783f74fe0a1c288aba9e6ac55f1444977
change-id: 20260115-grxring_big_v2-eed9a5803431

Best regards,
--  
Breno Leitao [off-list ref]