@@ -1819,6 +1819,44 @@ static int igc_ethtool_set_mm(struct net_device *netdev,
return igc_tsn_offload_apply(adapter);
}
+/**
+ * igc_ethtool_get_frame_ass_error - Get the frame assembly error count.
+ * @reg_value: Register value for IGC_PRMEXCPRCNT
+ * Return: The count of frame assembly errors.
+ */
+static u64 igc_ethtool_get_frame_ass_error(u32 reg_value)
+{
+ u32 ooo_frame_cnt, ooo_frag_cnt; /* Out of order statistics */
+ u32 miss_frame_frag_cnt;
+
+ ooo_frame_cnt = FIELD_GET(IGC_PRMEXCPRCNT_OOO_FRAME_CNT, reg_value);
+ ooo_frag_cnt = FIELD_GET(IGC_PRMEXCPRCNT_OOO_FRAG_CNT, reg_value);
+ miss_frame_frag_cnt = FIELD_GET(IGC_PRMEXCPRCNT_MISS_FRAME_FRAG_CNT, reg_value);
+
+ return ooo_frame_cnt + ooo_frag_cnt + miss_frame_frag_cnt;
+}
+
+static u64 igc_ethtool_get_frame_smd_error(u32 reg_value)
+{
+ return FIELD_GET(IGC_PRMEXCPRCNT_OOO_SMDC, reg_value);
+}
+
+static void igc_ethtool_get_mm_stats(struct net_device *dev,
+ struct ethtool_mm_stats *stats)
+{
+ struct igc_adapter *adapter = netdev_priv(dev);
+ struct igc_hw *hw = &adapter->hw;
+ u32 reg_value;
+
+ reg_value = rd32(IGC_PRMEXCPRCNT);
+
+ stats->MACMergeFrameAssErrorCount = igc_ethtool_get_frame_ass_error(reg_value);
+ stats->MACMergeFrameSmdErrorCount = igc_ethtool_get_frame_smd_error(reg_value);
+ stats->MACMergeFrameAssOkCount = rd32(IGC_PRMPTDRCNT);
+ stats->MACMergeFragCountRx = rd32(IGC_PRMEVNTRCNT);
+ stats->MACMergeFragCountTx = rd32(IGC_PRMEVNTTCNT);
+}
+
static int igc_ethtool_get_link_ksettings(struct net_device *netdev,
struct ethtool_link_ksettings *cmd)
{
@@ -2116,6 +2154,7 @@ static const struct ethtool_ops igc_ethtool_ops = {
.self_test = igc_ethtool_diag_test,
.get_mm = igc_ethtool_get_mm,
.set_mm = igc_ethtool_set_mm,
+ .get_mm_stats = igc_ethtool_get_mm_stats,
};
void igc_ethtool_set_ops(struct net_device *netdev)
@@ -222,6 +222,22 @@
#define IGC_FTQF(_n) (0x059E0 + (4 * (_n))) /* 5-tuple Queue Fltr */
+/* Time sync registers - preemption statistics */
+#define IGC_PRMPTDRCNT 0x04284 /* Good RX Preempted Packets */
+#define IGC_PRMEVNTTCNT 0x04298 /* TX Preemption event counter */
+#define IGC_PRMEVNTRCNT 0x0429C /* RX Preemption event counter */
+
+ /* Preemption Exception Counter */
+ #define IGC_PRMEXCPRCNT 0x42A0
+/* Received out of order packets with SMD-C */
+#define IGC_PRMEXCPRCNT_OOO_SMDC 0x000000FF
+/* Received out of order packets with SMD-C and wrong Frame CNT */
+#define IGC_PRMEXCPRCNT_OOO_FRAME_CNT 0x0000FF00
+/* Received out of order packets with SMD-C and wrong Frag CNT */
+#define IGC_PRMEXCPRCNT_OOO_FRAG_CNT 0x00FF0000
+/* Received packets with SMD-S and wrong Frag CNT and Frame CNT */
+#define IGC_PRMEXCPRCNT_MISS_FRAME_FRAG_CNT 0xFF000000
+
/* Transmit Scheduling Registers */
#define IGC_TQAVCTRL 0x3570
#define IGC_TXQCTL(_n) (0x3344 + 0x4 * (_n))
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.gomes@intel.com> Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com> Co-developed-by: Chwee-Lin Choong <chwee.lin.choong@intel.com> Signed-off-by: Chwee-Lin Choong <chwee.lin.choong@intel.com> Signed-off-by: Faizal Rahim <faizal.abdul.rahim@linux.intel.com> --- drivers/net/ethernet/intel/igc/igc_ethtool.c | 39 ++++++++++++++++++++ drivers/net/ethernet/intel/igc/igc_regs.h | 16 ++++++++ 2 files changed, 55 insertions(+)