net: mscc: ocelot: export ethtool MAC Merge stats for Felix VSC9959

The Felix VSC9959 switch supports frame preemption and has a MAC Merge
layer. In addition to the structured stats that exist for the eMAC,
export the counters associated with its pMAC (pause, RMON, MAC, PHY,
control) plus the high-level MAC Merge layer stats. The unstructured
ethtool counters, as well as the rtnl_link_stats64 were left to report
only the eMAC counters.

Because statistics processing is quite self-contained in ocelot_stats.c
now, I've opted for introducing an ocelot->mm_supported bool, based on
which the common switch lib does everything, rather than pushing the
TSN-specific code in felix_vsc9959.c, as happens for other TSN stuff.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 279 insertions, 10 deletions

diff --git a/drivers/net/ethernet/mscc/ocelot_stats.c b/drivers/net/ethernet/mscc/ocelot_stats.c
index 551e3cbfae79..f660eef4a287 100644
--- a/drivers/net/ethernet/mscc/ocelot_stats.c
+++ b/drivers/net/ethernet/mscc/ocelot_stats.c
@@ -54,6 +54,29 @@ enum ocelot_stat {
 	OCELOT_STAT_RX_GREEN_PRIO_5,
 	OCELOT_STAT_RX_GREEN_PRIO_6,
 	OCELOT_STAT_RX_GREEN_PRIO_7,
+	OCELOT_STAT_RX_ASSEMBLY_ERRS,
+	OCELOT_STAT_RX_SMD_ERRS,
+	OCELOT_STAT_RX_ASSEMBLY_OK,
+	OCELOT_STAT_RX_MERGE_FRAGMENTS,
+	OCELOT_STAT_RX_PMAC_OCTETS,
+	OCELOT_STAT_RX_PMAC_UNICAST,
+	OCELOT_STAT_RX_PMAC_MULTICAST,
+	OCELOT_STAT_RX_PMAC_BROADCAST,
+	OCELOT_STAT_RX_PMAC_SHORTS,
+	OCELOT_STAT_RX_PMAC_FRAGMENTS,
+	OCELOT_STAT_RX_PMAC_JABBERS,
+	OCELOT_STAT_RX_PMAC_CRC_ALIGN_ERRS,
+	OCELOT_STAT_RX_PMAC_SYM_ERRS,
+	OCELOT_STAT_RX_PMAC_64,
+	OCELOT_STAT_RX_PMAC_65_127,
+	OCELOT_STAT_RX_PMAC_128_255,
+	OCELOT_STAT_RX_PMAC_256_511,
+	OCELOT_STAT_RX_PMAC_512_1023,
+	OCELOT_STAT_RX_PMAC_1024_1526,
+	OCELOT_STAT_RX_PMAC_1527_MAX,
+	OCELOT_STAT_RX_PMAC_PAUSE,
+	OCELOT_STAT_RX_PMAC_CONTROL,
+	OCELOT_STAT_RX_PMAC_LONGS,
 	OCELOT_STAT_TX_OCTETS,
 	OCELOT_STAT_TX_UNICAST,
 	OCELOT_STAT_TX_MULTICAST,
@@ -85,6 +108,20 @@ enum ocelot_stat {
 	OCELOT_STAT_TX_GREEN_PRIO_6,
 	OCELOT_STAT_TX_GREEN_PRIO_7,
 	OCELOT_STAT_TX_AGED,
+	OCELOT_STAT_TX_MM_HOLD,
+	OCELOT_STAT_TX_MERGE_FRAGMENTS,
+	OCELOT_STAT_TX_PMAC_OCTETS,
+	OCELOT_STAT_TX_PMAC_UNICAST,
+	OCELOT_STAT_TX_PMAC_MULTICAST,
+	OCELOT_STAT_TX_PMAC_BROADCAST,
+	OCELOT_STAT_TX_PMAC_PAUSE,
+	OCELOT_STAT_TX_PMAC_64,
+	OCELOT_STAT_TX_PMAC_65_127,
+	OCELOT_STAT_TX_PMAC_128_255,
+	OCELOT_STAT_TX_PMAC_256_511,
+	OCELOT_STAT_TX_PMAC_512_1023,
+	OCELOT_STAT_TX_PMAC_1024_1526,
+	OCELOT_STAT_TX_PMAC_1527_MAX,
 	OCELOT_STAT_DROP_LOCAL,
 	OCELOT_STAT_DROP_TAIL,
 	OCELOT_STAT_DROP_YELLOW_PRIO_0,
@@ -228,9 +265,52 @@ static const struct ocelot_stat_layout ocelot_stats_layout[OCELOT_NUM_STATS] = {
 	OCELOT_COMMON_STATS,
 };
 
+static const struct ocelot_stat_layout ocelot_mm_stats_layout[OCELOT_NUM_STATS] = {
+	OCELOT_COMMON_STATS,
+	OCELOT_STAT(RX_ASSEMBLY_ERRS),
+	OCELOT_STAT(RX_SMD_ERRS),
+	OCELOT_STAT(RX_ASSEMBLY_OK),
+	OCELOT_STAT(RX_MERGE_FRAGMENTS),
+	OCELOT_STAT(TX_MERGE_FRAGMENTS),
+	OCELOT_STAT(RX_PMAC_OCTETS),
+	OCELOT_STAT(RX_PMAC_UNICAST),
+	OCELOT_STAT(RX_PMAC_MULTICAST),
+	OCELOT_STAT(RX_PMAC_BROADCAST),
+	OCELOT_STAT(RX_PMAC_SHORTS),
+	OCELOT_STAT(RX_PMAC_FRAGMENTS),
+	OCELOT_STAT(RX_PMAC_JABBERS),
+	OCELOT_STAT(RX_PMAC_CRC_ALIGN_ERRS),
+	OCELOT_STAT(RX_PMAC_SYM_ERRS),
+	OCELOT_STAT(RX_PMAC_64),
+	OCELOT_STAT(RX_PMAC_65_127),
+	OCELOT_STAT(RX_PMAC_128_255),
+	OCELOT_STAT(RX_PMAC_256_511),
+	OCELOT_STAT(RX_PMAC_512_1023),
+	OCELOT_STAT(RX_PMAC_1024_1526),
+	OCELOT_STAT(RX_PMAC_1527_MAX),
+	OCELOT_STAT(RX_PMAC_PAUSE),
+	OCELOT_STAT(RX_PMAC_CONTROL),
+	OCELOT_STAT(RX_PMAC_LONGS),
+	OCELOT_STAT(TX_PMAC_OCTETS),
+	OCELOT_STAT(TX_PMAC_UNICAST),
+	OCELOT_STAT(TX_PMAC_MULTICAST),
+	OCELOT_STAT(TX_PMAC_BROADCAST),
+	OCELOT_STAT(TX_PMAC_PAUSE),
+	OCELOT_STAT(TX_PMAC_64),
+	OCELOT_STAT(TX_PMAC_65_127),
+	OCELOT_STAT(TX_PMAC_128_255),
+	OCELOT_STAT(TX_PMAC_256_511),
+	OCELOT_STAT(TX_PMAC_512_1023),
+	OCELOT_STAT(TX_PMAC_1024_1526),
+	OCELOT_STAT(TX_PMAC_1527_MAX),
+};
+
 static const struct ocelot_stat_layout *
 ocelot_get_stats_layout(struct ocelot *ocelot)
 {
+	if (ocelot->mm_supported)
+		return ocelot_mm_stats_layout;
+
 	return ocelot_stats_layout;
 }
 
@@ -410,14 +490,63 @@ static void ocelot_port_pause_stats_cb(struct ocelot *ocelot, int port, void *pr
 	pause_stats->rx_pause_frames = s[OCELOT_STAT_RX_PAUSE];
 }
 
+static void ocelot_port_pmac_pause_stats_cb(struct ocelot *ocelot, int port,
+					    void *priv)
+{
+	u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
+	struct ethtool_pause_stats *pause_stats = priv;
+
+	pause_stats->tx_pause_frames = s[OCELOT_STAT_TX_PMAC_PAUSE];
+	pause_stats->rx_pause_frames = s[OCELOT_STAT_RX_PMAC_PAUSE];
+}
+
+static void ocelot_port_mm_stats_cb(struct ocelot *ocelot, int port,
+				    void *priv)
+{
+	u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
+	struct ethtool_mm_stats *stats = priv;
+
+	stats->MACMergeFrameAssErrorCount = s[OCELOT_STAT_RX_ASSEMBLY_ERRS];
+	stats->MACMergeFrameSmdErrorCount = s[OCELOT_STAT_RX_SMD_ERRS];
+	stats->MACMergeFrameAssOkCount = s[OCELOT_STAT_RX_ASSEMBLY_OK];
+	stats->MACMergeFragCountRx = s[OCELOT_STAT_RX_MERGE_FRAGMENTS];
+	stats->MACMergeFragCountTx = s[OCELOT_STAT_TX_MERGE_FRAGMENTS];
+	stats->MACMergeHoldCount = s[OCELOT_STAT_TX_MM_HOLD];
+}
+
 void ocelot_port_get_pause_stats(struct ocelot *ocelot, int port,
 				 struct ethtool_pause_stats *pause_stats)
 {
-	ocelot_port_stats_run(ocelot, port, pause_stats,
-			      ocelot_port_pause_stats_cb);
+	struct net_device *dev;
+
+	switch (pause_stats->src) {
+	case ETHTOOL_MAC_STATS_SRC_EMAC:
+		ocelot_port_stats_run(ocelot, port, pause_stats,
+				      ocelot_port_pause_stats_cb);
+		break;
+	case ETHTOOL_MAC_STATS_SRC_PMAC:
+		if (ocelot->mm_supported)
+			ocelot_port_stats_run(ocelot, port, pause_stats,
+					      ocelot_port_pmac_pause_stats_cb);
+		break;
+	case ETHTOOL_MAC_STATS_SRC_AGGREGATE:
+		dev = ocelot->ops->port_to_netdev(ocelot, port);
+		ethtool_aggregate_pause_stats(dev, pause_stats);
+		break;
+	}
 }
 EXPORT_SYMBOL_GPL(ocelot_port_get_pause_stats);
 
+void ocelot_port_get_mm_stats(struct ocelot *ocelot, int port,
+			      struct ethtool_mm_stats *stats)
+{
+	if (!ocelot->mm_supported)
+		return;
+
+	ocelot_port_stats_run(ocelot, port, stats, ocelot_port_mm_stats_cb);
+}
+EXPORT_SYMBOL_GPL(ocelot_port_get_mm_stats);
+
 static const struct ethtool_rmon_hist_range ocelot_rmon_ranges[] = {
 	{   64,    64 },
 	{   65,   127 },
@@ -456,14 +585,57 @@ static void ocelot_port_rmon_stats_cb(struct ocelot *ocelot, int port, void *pri
 	rmon_stats->hist_tx[6] = s[OCELOT_STAT_TX_1024_1526];
 }
 
+static void ocelot_port_pmac_rmon_stats_cb(struct ocelot *ocelot, int port,
+					   void *priv)
+{
+	u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
+	struct ethtool_rmon_stats *rmon_stats = priv;
+
+	rmon_stats->undersize_pkts = s[OCELOT_STAT_RX_PMAC_SHORTS];
+	rmon_stats->oversize_pkts = s[OCELOT_STAT_RX_PMAC_LONGS];
+	rmon_stats->fragments = s[OCELOT_STAT_RX_PMAC_FRAGMENTS];
+	rmon_stats->jabbers = s[OCELOT_STAT_RX_PMAC_JABBERS];
+
+	rmon_stats->hist[0] = s[OCELOT_STAT_RX_PMAC_64];
+	rmon_stats->hist[1] = s[OCELOT_STAT_RX_PMAC_65_127];
+	rmon_stats->hist[2] = s[OCELOT_STAT_RX_PMAC_128_255];
+	rmon_stats->hist[3] = s[OCELOT_STAT_RX_PMAC_256_511];
+	rmon_stats->hist[4] = s[OCELOT_STAT_RX_PMAC_512_1023];
+	rmon_stats->hist[5] = s[OCELOT_STAT_RX_PMAC_1024_1526];
+	rmon_stats->hist[6] = s[OCELOT_STAT_RX_PMAC_1527_MAX];
+
+	rmon_stats->hist_tx[0] = s[OCELOT_STAT_TX_PMAC_64];
+	rmon_stats->hist_tx[1] = s[OCELOT_STAT_TX_PMAC_65_127];
+	rmon_stats->hist_tx[2] = s[OCELOT_STAT_TX_PMAC_128_255];
+	rmon_stats->hist_tx[3] = s[OCELOT_STAT_TX_PMAC_128_255];
+	rmon_stats->hist_tx[4] = s[OCELOT_STAT_TX_PMAC_256_511];
+	rmon_stats->hist_tx[5] = s[OCELOT_STAT_TX_PMAC_512_1023];
+	rmon_stats->hist_tx[6] = s[OCELOT_STAT_TX_PMAC_1024_1526];
+}
+
 void ocelot_port_get_rmon_stats(struct ocelot *ocelot, int port,
 				struct ethtool_rmon_stats *rmon_stats,
 				const struct ethtool_rmon_hist_range **ranges)
 {
+	struct net_device *dev;
+
 	*ranges = ocelot_rmon_ranges;
 
-	ocelot_port_stats_run(ocelot, port, rmon_stats,
-			      ocelot_port_rmon_stats_cb);
+	switch (rmon_stats->src) {
+	case ETHTOOL_MAC_STATS_SRC_EMAC:
+		ocelot_port_stats_run(ocelot, port, rmon_stats,
+				      ocelot_port_rmon_stats_cb);
+		break;
+	case ETHTOOL_MAC_STATS_SRC_PMAC:
+		if (ocelot->mm_supported)
+			ocelot_port_stats_run(ocelot, port, rmon_stats,
+					      ocelot_port_pmac_rmon_stats_cb);
+		break;
+	case ETHTOOL_MAC_STATS_SRC_AGGREGATE:
+		dev = ocelot->ops->port_to_netdev(ocelot, port);
+		ethtool_aggregate_rmon_stats(dev, rmon_stats);
+		break;
+	}
 }
 EXPORT_SYMBOL_GPL(ocelot_port_get_rmon_stats);
 
@@ -475,11 +647,35 @@ static void ocelot_port_ctrl_stats_cb(struct ocelot *ocelot, int port, void *pri
 	ctrl_stats->MACControlFramesReceived = s[OCELOT_STAT_RX_CONTROL];
 }
 
+static void ocelot_port_pmac_ctrl_stats_cb(struct ocelot *ocelot, int port,
+					   void *priv)
+{
+	u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
+	struct ethtool_eth_ctrl_stats *ctrl_stats = priv;
+
+	ctrl_stats->MACControlFramesReceived = s[OCELOT_STAT_RX_PMAC_CONTROL];
+}
+
 void ocelot_port_get_eth_ctrl_stats(struct ocelot *ocelot, int port,
 				    struct ethtool_eth_ctrl_stats *ctrl_stats)
 {
-	ocelot_port_stats_run(ocelot, port, ctrl_stats,
-			      ocelot_port_ctrl_stats_cb);
+	struct net_device *dev;
+
+	switch (ctrl_stats->src) {
+	case ETHTOOL_MAC_STATS_SRC_EMAC:
+		ocelot_port_stats_run(ocelot, port, ctrl_stats,
+				      ocelot_port_ctrl_stats_cb);
+		break;
+	case ETHTOOL_MAC_STATS_SRC_PMAC:
+		if (ocelot->mm_supported)
+			ocelot_port_stats_run(ocelot, port, ctrl_stats,
+					      ocelot_port_pmac_ctrl_stats_cb);
+		break;
+	case ETHTOOL_MAC_STATS_SRC_AGGREGATE:
+		dev = ocelot->ops->port_to_netdev(ocelot, port);
+		ethtool_aggregate_ctrl_stats(dev, ctrl_stats);
+		break;
+	}
 }
 EXPORT_SYMBOL_GPL(ocelot_port_get_eth_ctrl_stats);
 
@@ -525,11 +721,60 @@ static void ocelot_port_mac_stats_cb(struct ocelot *ocelot, int port, void *priv
 	mac_stats->AlignmentErrors = s[OCELOT_STAT_RX_CRC_ALIGN_ERRS];
 }
 
+static void ocelot_port_pmac_mac_stats_cb(struct ocelot *ocelot, int port,
+					  void *priv)
+{
+	u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
+	struct ethtool_eth_mac_stats *mac_stats = priv;
+
+	mac_stats->OctetsTransmittedOK = s[OCELOT_STAT_TX_PMAC_OCTETS];
+	mac_stats->FramesTransmittedOK = s[OCELOT_STAT_TX_PMAC_64] +
+					 s[OCELOT_STAT_TX_PMAC_65_127] +
+					 s[OCELOT_STAT_TX_PMAC_128_255] +
+					 s[OCELOT_STAT_TX_PMAC_256_511] +
+					 s[OCELOT_STAT_TX_PMAC_512_1023] +
+					 s[OCELOT_STAT_TX_PMAC_1024_1526] +
+					 s[OCELOT_STAT_TX_PMAC_1527_MAX];
+	mac_stats->OctetsReceivedOK = s[OCELOT_STAT_RX_PMAC_OCTETS];
+	mac_stats->FramesReceivedOK = s[OCELOT_STAT_RX_PMAC_64] +
+				      s[OCELOT_STAT_RX_PMAC_65_127] +
+				      s[OCELOT_STAT_RX_PMAC_128_255] +
+				      s[OCELOT_STAT_RX_PMAC_256_511] +
+				      s[OCELOT_STAT_RX_PMAC_512_1023] +
+				      s[OCELOT_STAT_RX_PMAC_1024_1526] +
+				      s[OCELOT_STAT_RX_PMAC_1527_MAX];
+	mac_stats->MulticastFramesXmittedOK = s[OCELOT_STAT_TX_PMAC_MULTICAST];
+	mac_stats->BroadcastFramesXmittedOK = s[OCELOT_STAT_TX_PMAC_BROADCAST];
+	mac_stats->MulticastFramesReceivedOK = s[OCELOT_STAT_RX_PMAC_MULTICAST];
+	mac_stats->BroadcastFramesReceivedOK = s[OCELOT_STAT_RX_PMAC_BROADCAST];
+	mac_stats->FrameTooLongErrors = s[OCELOT_STAT_RX_PMAC_LONGS];
+	/* Sadly, C_RX_CRC is the sum of FCS and alignment errors, they are not
+	 * counted individually.
+	 */
+	mac_stats->FrameCheckSequenceErrors = s[OCELOT_STAT_RX_PMAC_CRC_ALIGN_ERRS];
+	mac_stats->AlignmentErrors = s[OCELOT_STAT_RX_PMAC_CRC_ALIGN_ERRS];
+}
+
 void ocelot_port_get_eth_mac_stats(struct ocelot *ocelot, int port,
 				   struct ethtool_eth_mac_stats *mac_stats)
 {
-	ocelot_port_stats_run(ocelot, port, mac_stats,
-			      ocelot_port_mac_stats_cb);
+	struct net_device *dev;
+
+	switch (mac_stats->src) {
+	case ETHTOOL_MAC_STATS_SRC_EMAC:
+		ocelot_port_stats_run(ocelot, port, mac_stats,
+				      ocelot_port_mac_stats_cb);
+		break;
+	case ETHTOOL_MAC_STATS_SRC_PMAC:
+		if (ocelot->mm_supported)
+			ocelot_port_stats_run(ocelot, port, mac_stats,
+					      ocelot_port_pmac_mac_stats_cb);
+		break;
+	case ETHTOOL_MAC_STATS_SRC_AGGREGATE:
+		dev = ocelot->ops->port_to_netdev(ocelot, port);
+		ethtool_aggregate_mac_stats(dev, mac_stats);
+		break;
+	}
 }
 EXPORT_SYMBOL_GPL(ocelot_port_get_eth_mac_stats);
 
@@ -541,11 +786,35 @@ static void ocelot_port_phy_stats_cb(struct ocelot *ocelot, int port, void *priv
 	phy_stats->SymbolErrorDuringCarrier = s[OCELOT_STAT_RX_SYM_ERRS];
 }
 
+static void ocelot_port_pmac_phy_stats_cb(struct ocelot *ocelot, int port,
+					  void *priv)
+{
+	u64 *s = &ocelot->stats[port * OCELOT_NUM_STATS];
+	struct ethtool_eth_phy_stats *phy_stats = priv;
+
+	phy_stats->SymbolErrorDuringCarrier = s[OCELOT_STAT_RX_PMAC_SYM_ERRS];
+}
+
 void ocelot_port_get_eth_phy_stats(struct ocelot *ocelot, int port,
 				   struct ethtool_eth_phy_stats *phy_stats)
 {
-	ocelot_port_stats_run(ocelot, port, phy_stats,
-			      ocelot_port_phy_stats_cb);
+	struct net_device *dev;
+
+	switch (phy_stats->src) {
+	case ETHTOOL_MAC_STATS_SRC_EMAC:
+		ocelot_port_stats_run(ocelot, port, phy_stats,
+				      ocelot_port_phy_stats_cb);
+		break;
+	case ETHTOOL_MAC_STATS_SRC_PMAC:
+		if (ocelot->mm_supported)
+			ocelot_port_stats_run(ocelot, port, phy_stats,
+					      ocelot_port_pmac_phy_stats_cb);
+		break;
+	case ETHTOOL_MAC_STATS_SRC_AGGREGATE:
+		dev = ocelot->ops->port_to_netdev(ocelot, port);
+		ethtool_aggregate_phy_stats(dev, phy_stats);
+		break;
+	}
 }
 EXPORT_SYMBOL_GPL(ocelot_port_get_eth_phy_stats);