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Miller" , Eric Dumazet , Paolo Abeni , kuba@kernel.org, Simon Horman , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?utf-8?q?Eugenio_P=C3=A9rez?= , Andrew Lunn Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux.dev, Breno Leitao , Lei Yang , kernel-team@meta.com X-Mailer: b4 0.15-dev-dd21f X-Developer-Signature: v=1; a=openpgp-sha256; l=2331; i=leitao@debian.org; h=from:subject:message-id; bh=N/IbfzYztm6rjlvOxD8pgVODM7w/tTKYDjq4WFCFiKU=; b=owEBbQKS/ZANAwAIATWjk5/8eHdtAcsmYgBoxENdao+OCMI/V6R3A03GZZi2wJ2qZih+VI3HD OQAz4Oj/teJAjMEAAEIAB0WIQSshTmm6PRnAspKQ5s1o5Of/Hh3bQUCaMRDXQAKCRA1o5Of/Hh3 be4aD/4677eIqWjN+GaivFYOB2waQlJAdd5PtEqvoyZKzCciN2ZLwUv+CL3k+BAHdaTzo9ZMCLT VQOiK9vGWvS9zMoS0c+FbVzUle4Cc3QDLo3KnnY4CwTZ1cN3Moo+ZwI1RvXLvFzLPu8P4ROjCG8 CE/JHoN90fusHc3X6hSHgzA4GyQvSQOGwU7EW6LYbdeKn/kA98CbgXEK0fJZ+jJ0dGJf9bpmO4O rS/Ko4VuvV9NqhHSIo2bVLc1c/JmGffxuPnPL3HOLOG8Wf4uu94ORR2l16wZjY0/j3coblw6fqD ISCD4jZo1OQcrGxhFCia/5sD5Sx1k/L6OWczduJWiIOMYwz3ttBD/bZKUX5WKod22ML7XBMqRJ9 F5LSpqLdQ3Uet+TcpM2FycBnx9+0rAducmnxTMygeTdkc5teBTkXAXDH6Z1SL2Kp9Q45wPYaqad Vb5pWwznlWWIotZRFnIRtC1i2W+pdASKa3OLHBuT4yjCRggJ+AdSYFtFkwtwFipukrEYpoQeFzg xZ+lzTU68F+iGvT1zmq1zlCerOpG5W3JIM6Y7P89z2N8+0xaWVf4mugimFjg7YIghhSwAhNTglE rqpue1RtBDxjV6Js1Z84KmjPwafCdWs94F+rd9lNz0s09ZmCGeY9erBMGPOGfR5L3hRi5edoraQ nkmjP+G5wvxICMw== X-Developer-Key: i=leitao@debian.org; a=openpgp; fpr=AC8539A6E8F46702CA4A439B35A3939FFC78776D This patchset introduces a new dedicated ethtool_ops callback, .get_rx_ring_count, which enables drivers to provide the number of RX rings directly, improving efficiency and clarity in RX ring queries and RSS configuration. Number of drivers implements .get_rxnfc callback just to report the ring count, so, having a proper callback makes sense and simplify .get_rxnfc (in some cases remove it completely). This has been suggested by Jakub, and follow the same idea as RXFH driver callbacks [1]. This also port virtio_net to this new callback. Once there is consensus on this approach, I can start moving the drivers to this new callback. Link: https://lore.kernel.org/all/20250611145949.2674086-1-kuba@kernel.org/ [1] Suggested-by: Jakub Kicinski Signed-off-by: Breno Leitao Tested-by: Lei Yang --- Changes in v2: - rename get_num_rxrings() to ethtool_get_rx_ring_count() (Jakub) - initialize struct ethtool_rxnfc() (Jakub) - Link to v1: https://lore.kernel.org/r/20250909-gxrings-v1-0-634282f06a54@debian.org --- Changes v1 from RFC: - Renaming and changing the return type of .get_rxrings() callback (Jakub) - Add the docstring format for the new callback (Simon) - Remove the unecessary WARN_ONCE() (Jakub) - Link to RFC: https://lore.kernel.org/r/20250905-gxrings-v1-0-984fc471f28f@debian.org --- Breno Leitao (7): net: ethtool: pass the num of RX rings directly to ethtool_copy_validate_indir net: ethtool: add support for ETHTOOL_GRXRINGS ioctl net: ethtool: remove the duplicated handling from ethtool_get_rxrings net: ethtool: add get_rx_ring_count callback to optimize RX ring queries net: ethtool: update set_rxfh to use ethtool_get_rx_ring_count helper net: ethtool: update set_rxfh_indir to use ethtool_get_rx_ring_count helper net: virtio_net: add get_rxrings ethtool callback for RX ring queries drivers/net/virtio_net.c | 15 ++------- include/linux/ethtool.h | 2 ++ net/ethtool/ioctl.c | 81 +++++++++++++++++++++++++++++++++++++----------- 3 files changed, 68 insertions(+), 30 deletions(-) --- base-commit: 1f24a240974589ce42f70502ccb3ff3f5189d69a change-id: 20250905-gxrings-a2ec22ee2aec Best regards, -- Breno Leitao