linux-kernel - [PATCH 0/2] net: mlx: migrate to new get_rx_ring

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Message-Id: <20251113-mlx_grxrings-v1-0-0017f2af7dd0@debian.org>
Date: Thu, 13 Nov 2025 08:46:02 -0800
From: Breno Leitao <leitao@...ian.org>
To: Tariq Toukan <tariqt@...dia.com>, Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Saeed Mahameed <saeedm@...dia.com>, Mark Bloch <mbloch@...dia.com>, 
 Leon Romanovsky <leon@...nel.org>
Cc: netdev@...r.kernel.org, linux-rdma@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Breno Leitao <leitao@...ian.org>, 
 kernel-team@...a.com
Subject: [PATCH 0/2] net: mlx: migrate to new get_rx_ring_count ethtool API

This series migrates the mlx4 and mlx5 drivers to use the new
.get_rx_ring_count() callback introduced in commit 84eaf4359c36 ("net:
ethtool: add get_rx_ring_count callback to optimize RX ring queries").

Previously, these drivers handled ETHTOOL_GRXRINGS within the
.get_rxnfc() callback. With the dedicated .get_rx_ring_count() API, this
handling can be extracted and simplified.

For mlx5, this affects both the ethernet and IPoIB drivers. The
ETHTOOL_GRXRINGS handling was previously kept in .get_rxnfc() to support
"ethtool -x" when CONFIG_MLX5_EN_RXNFC=n, but this is no longer
necessary with the new dedicated callback.

Note: The mlx4 changes are compile-tested only, while mlx5 changes were
properly tested.

Signed-off-by: Breno Leitao <leitao@...ian.org>
---
Breno Leitao (2):
      mlx4: extract GRXRINGS from .get_rxnfc
      mlx5: extract GRXRINGS from .get_rxnfc

 drivers/net/ethernet/mellanox/mlx4/en_ethtool.c        | 11 ++++++++---
 drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c   | 18 ++++++++----------
 .../net/ethernet/mellanox/mlx5/core/ipoib/ethtool.c    | 18 ++++++++----------
 3 files changed, 24 insertions(+), 23 deletions(-)
---
base-commit: 9f07af1d274223a4314b5e2e6d395a78166c24c5
change-id: 20251113-mlx_grxrings-195d95fe0e94

Best regards,
--  
Breno Leitao <leitao@...ian.org>