On 18/03/2025 5:07, Faizal Rahim wrote:
Implemented "ethtool --include-statistics --show-mm" callback for IGC.Tested preemption scenario to check preemption statistics: 1) Trigger verification handshake on both boards: $ sudo ethtool --set-mm enp1s0 pmac-enabled on $ sudo ethtool --set-mm enp1s0 tx-enabled on $ sudo ethtool --set-mm enp1s0 verify-enabled on 2) Set preemptible or express queue in taprio for tx board: $ sudo tc qdisc replace dev enp1s0 parent root handle 100 taprio \ num_tc 4 map 3 2 1 0 3 3 3 3 3 3 3 3 3 3 3 3 \ queues 1@0 1@1 1@2 1@3 base-time 0 sched-entry S F 100000 \ fp E E P P 3) Send large size packets on preemptible queue 4) Send small size packets on express queue to preempt packets in preemptible queue 5) Show preemption statistics on the receiving board: $ ethtool --include-statistics --show-mm enp1s0 MAC Merge layer state for enp1s0: pMAC enabled: on TX enabled: on TX active: on TX minimum fragment size: 64 RX minimum fragment size: 60 Verify enabled: on Verify time: 128 Max verify time: 128 Verification status: SUCCEEDED Statistics: MACMergeFrameAssErrorCount: 0 MACMergeFrameSmdErrorCount: 0 MACMergeFrameAssOkCount: 511 MACMergeFragCountRx: 764 MACMergeFragCountTx: 0 MACMergeHoldCount: 0 Co-developed-by: Vinicius Costa Gomes <vinicius.go...@intel.com> Signed-off-by: Vinicius Costa Gomes <vinicius.go...@intel.com> Co-developed-by: Chwee-Lin Choong <chwee.lin.cho...@intel.com> Signed-off-by: Chwee-Lin Choong <chwee.lin.cho...@intel.com> Reviewed-by: Vladimir Oltean <vladimir.olt...@nxp.com> Signed-off-by: Faizal Rahim <faizal.abdul.ra...@linux.intel.com> --- drivers/net/ethernet/intel/igc/igc_ethtool.c | 40 ++++++++++++++++++++ drivers/net/ethernet/intel/igc/igc_regs.h | 16 ++++++++ 2 files changed, 56 insertions(+)
Tested-by: Mor Bar-Gabay <morx.bar.ga...@intel.com>
