Introduces support for the FPE feature in the IGC driver. The patches aligns with the upstream FPE API: https://patchwork.kernel.org/project/netdevbpf/cover/20230220122343.1156614-1-vladimir.oltean@xxxxxxx/ https://patchwork.kernel.org/project/netdevbpf/cover/20230119122705.73054-1-vladimir.oltean@xxxxxxx/ It builds upon earlier work: https://patchwork.kernel.org/project/netdevbpf/cover/20220520011538.1098888-1-vinicius.gomes@xxxxxxxxx/ The patch series adds the following functionalities to the IGC driver: a) Configure FPE using `ethtool --set-mm`. b) Display FPE settings via `ethtool --show-mm`. c) View FPE statistics using `ethtool --include-statistics --show-mm'. e) Block setting preemptible tc in taprio since it is not supported yet. Existing code already blocks it in mqprio. Change Log: v4 -> v5: - Remove "igc: Add support for preemptible traffic class in taprio" patch (Vladimir) - Add a new patch "igc: Block setting preemptible traffic classes in taprio" (Vladimir) - Add kernel-doc for mmsv api (Vladimir) - olininfo_status to use host byte order (Simon) - status_error should host byte type (Simon) - Some code was misplaced in the wrong patch (Vladimir) - Mix of tabs and spaces in patch description (Vladimir) - Created igc_is_pmac_enabled() to reduce code repetition (Vladimir) v3 -> v4: - Fix compilation warnings introduced by this patch series v2 -> v3: - Implement configure_tx() mmsv callback (Vladimir) - Use static_branch_inc() and static_branch_dec() (Vladimir) - Add adapter->fpe.mmsv.pmac_enabled as extra check (Vladimir) - Remove unnecessary error check in igc_fpe_init_tx_descriptor() (Vladimir) - Additional places to use FIELD_PREP() instead of manual bit manipulation (Vladimir) - IGC_TXD_POPTS_SMD_V and IGC_TXD_POPTS_SMD_R type change to enum (Vladimir) - Remove unnecessary netif_running() check in igc_fpe_xmit_frame (Vladimir) - Rate limit print in igc_fpe_send_mpacket (Vladimir) v1 -> v2: - Extract the stmmac verification logic into a common library (Vladimir) - igc to use common library for verification (Vladimir) - Fix syntax for kernel-doc to use "Return:" (Vladimir) - Use FIELD_GET instead of manual bit masking (Vladimir) - Don't assign 0 to statistics counter in igc_ethtool_get_mm_stats() (Vladimir) - Use pmac-enabled as a condition to allow MAC address value 0 (Vladimir) - Define macro register value in increasing value order (Vladimir) - Fix tx-min-frag-size handling for igc (Vladimir) - Handle link state changes with verification in igc (Vladimir) - Add static key for fast path code (Vladimir) - rx_min_frag_size get from constant (Vladimir) v1: https://patchwork.kernel.org/project/netdevbpf/cover/20241216064720.931522-1-faizal.abdul.rahim@xxxxxxxxxxxxxxx/ v2: https://patchwork.kernel.org/project/netdevbpf/cover/20250205100524.1138523-1-faizal.abdul.rahim@xxxxxxxxxxxxxxx/ v3: https://patchwork.kernel.org/project/netdevbpf/cover/20250207165649.2245320-1-faizal.abdul.rahim@xxxxxxxxxxxxxxx/ v4: https://patchwork.kernel.org/project/netdevbpf/cover/20250210070207.2615418-1-faizal.abdul.rahim@xxxxxxxxxxxxxxx/ Faizal Rahim (8): igc: Rename xdp_get_tx_ring() for non-xdp usage igc: Optimize the TX packet buffer utilization igc: Set the RX packet buffer size for TSN mode igc: Add support for frame preemption verification igc: Add support to set tx-min-frag-size igc: Add support to get MAC Merge data via ethtool igc: Add support to get frame preemption statistics via ethtool igc: Block setting preemptible traffic class in taprio Vladimir Oltean (1): net: ethtool: mm: extract stmmac verification logic into common library drivers/net/ethernet/intel/igc/igc.h | 15 +- drivers/net/ethernet/intel/igc/igc_base.h | 1 + drivers/net/ethernet/intel/igc/igc_defines.h | 15 +- drivers/net/ethernet/intel/igc/igc_ethtool.c | 76 ++++++ drivers/net/ethernet/intel/igc/igc_main.c | 67 +++++- drivers/net/ethernet/intel/igc/igc_regs.h | 16 ++ drivers/net/ethernet/intel/igc/igc_tsn.c | 190 ++++++++++++++- drivers/net/ethernet/intel/igc/igc_tsn.h | 52 ++++ drivers/net/ethernet/stmicro/stmmac/stmmac.h | 16 +- .../ethernet/stmicro/stmmac/stmmac_ethtool.c | 41 +--- .../net/ethernet/stmicro/stmmac/stmmac_fpe.c | 174 +++----------- .../net/ethernet/stmicro/stmmac/stmmac_fpe.h | 5 - .../net/ethernet/stmicro/stmmac/stmmac_main.c | 8 +- include/linux/ethtool.h | 131 ++++++++++ net/ethtool/mm.c | 227 +++++++++++++++++- 15 files changed, 817 insertions(+), 217 deletions(-) -- 2.34.1
