Hi, This is V3. Find V2 here: https://lore.kernel.org/all/1752130292-22249-1-git-send-email-tariqt@xxxxxxxxxx/ Find detailed feature description by Dragos below [1]. Regards, Tariq V3: - Dropped sysfs configuration patch. - Fixed compilation issue when !CONFIG_MLX5_CORE_EN. - Updated cover letter description. V2: - Rebase on top of the IFC patches, they got pulled through mlx5-next. [1] PCIe congestion events are events generated by the firmware when the device side has sustained PCIe inbound or outbound traffic above certain thresholds. The high and low threshold are hysteresis thresholds to prevent flapping: once the high threshold has been reached, a low threshold event will be triggered only after the bandwidth usage went below the low threshold. This series adds support for receiving and exposing such events as ethtool counters. 2 new pairs of counters are exposed: pci_bw_in/outbound_high/low. These should help the user understand if the device PCI is under pressure. Planned followup patches: - Allow configuration of thresholds through devlink. - Add ethtool counter for wakeups which did not result in any state change. Dragos Tatulea (2): net/mlx5e: Create/destroy PCIe Congestion Event object net/mlx5e: Add device PCIe congestion ethtool stats .../ethernet/mellanox/mlx5/counters.rst | 32 ++ .../net/ethernet/mellanox/mlx5/core/Makefile | 2 +- drivers/net/ethernet/mellanox/mlx5/core/en.h | 2 + .../mellanox/mlx5/core/en/pcie_cong_event.c | 315 ++++++++++++++++++ .../mellanox/mlx5/core/en/pcie_cong_event.h | 10 + .../net/ethernet/mellanox/mlx5/core/en_main.c | 3 + .../ethernet/mellanox/mlx5/core/en_stats.c | 1 + .../ethernet/mellanox/mlx5/core/en_stats.h | 1 + drivers/net/ethernet/mellanox/mlx5/core/eq.c | 3 + .../ethernet/mellanox/mlx5/core/mlx5_core.h | 13 + 10 files changed, 381 insertions(+), 1 deletion(-) create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/pcie_cong_event.c create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/pcie_cong_event.h base-commit: 06baf9bfa6ca8db7d5f32e12e27d1dc1b7cb3a8a -- 2.31.1
