The series is to enable ASPM on more r8169 supported devices, if available. The latest Realtek vendor driver and its Windows driver implements a feature called "dynamic ASPM" which can improve performance on it's ethernet NICs. We have "dynamic ASPM" mechanism in Ubuntu 22.04 LTS kernel for quite a while, and AFAIK it hasn't introduced any regression so far. A very similar issue was observed on Realtek wireless NIC, and it was resolved by disabling ASPM during NAPI poll. So in v8, we use the same approach, which is more straightforward, instead of toggling ASPM based on packet count. v7: https://lore.kernel.org/netdev/20211016075442.650311-1-kai.heng.feng@xxxxxxxxxxxxx/ v6: https://lore.kernel.org/netdev/20211007161552.272771-1-kai.heng.feng@xxxxxxxxxxxxx/ v5: https://lore.kernel.org/netdev/20210916154417.664323-1-kai.heng.feng@xxxxxxxxxxxxx/ v4: https://lore.kernel.org/netdev/20210827171452.217123-1-kai.heng.feng@xxxxxxxxxxxxx/ v3: https://lore.kernel.org/netdev/20210819054542.608745-1-kai.heng.feng@xxxxxxxxxxxxx/ v2: https://lore.kernel.org/netdev/20210812155341.817031-1-kai.heng.feng@xxxxxxxxxxxxx/ v1: https://lore.kernel.org/netdev/20210803152823.515849-1-kai.heng.feng@xxxxxxxxxxxxx/ Kai-Heng Feng (6): r8169: Disable ASPM L1.1 on 8168h Revert "PCI/ASPM: Unexport pcie_aspm_support_enabled()" PCI/ASPM: Add pcie_aspm_capable() helper r8169: Consider chip-specific ASPM can be enabled on more cases r8169: Use mutex to guard config register locking r8169: Disable ASPM while doing NAPI poll drivers/net/ethernet/realtek/r8169_main.c | 48 ++++++++++++++++++----- drivers/pci/pcie/aspm.c | 12 ++++++ include/linux/pci.h | 2 + 3 files changed, 53 insertions(+), 9 deletions(-) -- 2.34.1
