Merge branch 'cleanup-ocelot_stats-exposure'

Colin Foster says:

====================
cleanup ocelot_stats exposure

The ocelot_stats structures became redundant across all users. Replace
this redundancy with a static const struct. After doing this, several
definitions inside include/soc/mscc/ocelot.h no longer needed to be
shared. Patch 2 removes them.

Checkpatch throws an error for a complicated macro not in parentheses. I
understand the reason for OCELOT_COMMON_STATS was to allow expansion, but
interestingly this patch set is essentially reverting the ability for
expansion. I'm keeping the macro in this set, but am open to remove it,
since it doesn't _actually_ provide any immediate benefits anymore.
====================

Link: https://lore.kernel.org/r/20221119231406.3167852-1-colin.foster@in-advantage.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

6 files changed, 235 insertions, 26 deletions

diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c
index 44e160f32067..3b738cb2ae6e 100644
--- a/drivers/net/dsa/ocelot/felix.c
+++ b/drivers/net/dsa/ocelot/felix.c
@@ -1363,7 +1363,6 @@ static int felix_init_structs(struct felix *felix, int num_phys_ports)
 		return -ENOMEM;
 
 	ocelot->map		= felix->info->map;
-	ocelot->stats_layout	= felix->info->stats_layout;
 	ocelot->num_mact_rows	= felix->info->num_mact_rows;
 	ocelot->vcap		= felix->info->vcap;
 	ocelot->vcap_pol.base	= felix->info->vcap_pol_base;
diff --git a/drivers/net/dsa/ocelot/felix.h b/drivers/net/dsa/ocelot/felix.h
index 42338116eed0..be22d6ccd7c8 100644
--- a/drivers/net/dsa/ocelot/felix.h
+++ b/drivers/net/dsa/ocelot/felix.h
@@ -28,7 +28,6 @@ struct felix_info {
 	const struct ocelot_ops		*ops;
 	const u32			*port_modes;
 	int				num_mact_rows;
-	const struct ocelot_stat_layout	*stats_layout;
 	int				num_ports;
 	int				num_tx_queues;
 	struct vcap_props		*vcap;
diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
index b0ae8d6156f6..01ac70fd7ddf 100644
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -565,10 +565,6 @@ static const struct reg_field vsc9959_regfields[REGFIELD_MAX] = {
 	[SYS_PAUSE_CFG_PAUSE_ENA] = REG_FIELD_ID(SYS_PAUSE_CFG, 0, 1, 7, 4),
 };
 
-static const struct ocelot_stat_layout vsc9959_stats_layout[OCELOT_NUM_STATS] = {
-	OCELOT_COMMON_STATS,
-};
-
 static const struct vcap_field vsc9959_vcap_es0_keys[] = {
 	[VCAP_ES0_EGR_PORT]			= {  0,  3},
 	[VCAP_ES0_IGR_PORT]			= {  3,  3},
@@ -2546,7 +2542,6 @@ static const struct felix_info felix_info_vsc9959 = {
 	.regfields		= vsc9959_regfields,
 	.map			= vsc9959_regmap,
 	.ops			= &vsc9959_ops,
-	.stats_layout		= vsc9959_stats_layout,
 	.vcap			= vsc9959_vcap_props,
 	.vcap_pol_base		= VSC9959_VCAP_POLICER_BASE,
 	.vcap_pol_max		= VSC9959_VCAP_POLICER_MAX,
diff --git a/drivers/net/dsa/ocelot/seville_vsc9953.c b/drivers/net/dsa/ocelot/seville_vsc9953.c
index 6500c1697dd6..88ed3a2e487a 100644
--- a/drivers/net/dsa/ocelot/seville_vsc9953.c
+++ b/drivers/net/dsa/ocelot/seville_vsc9953.c
@@ -543,10 +543,6 @@ static const struct reg_field vsc9953_regfields[REGFIELD_MAX] = {
 	[SYS_PAUSE_CFG_PAUSE_ENA] = REG_FIELD_ID(SYS_PAUSE_CFG, 0, 1, 11, 4),
 };
 
-static const struct ocelot_stat_layout vsc9953_stats_layout[OCELOT_NUM_STATS] = {
-	OCELOT_COMMON_STATS,
-};
-
 static const struct vcap_field vsc9953_vcap_es0_keys[] = {
 	[VCAP_ES0_EGR_PORT]			= {  0,  4},
 	[VCAP_ES0_IGR_PORT]			= {  4,  4},
@@ -970,7 +966,6 @@ static const struct felix_info seville_info_vsc9953 = {
 	.regfields		= vsc9953_regfields,
 	.map			= vsc9953_regmap,
 	.ops			= &vsc9953_ops,
-	.stats_layout		= vsc9953_stats_layout,
 	.vcap			= vsc9953_vcap_props,
 	.vcap_pol_base		= VSC9953_VCAP_POLICER_BASE,
 	.vcap_pol_max		= VSC9953_VCAP_POLICER_MAX,
diff --git a/drivers/net/ethernet/mscc/ocelot_stats.c b/drivers/net/ethernet/mscc/ocelot_stats.c
index dbd20b125cea..1478c3b21af1 100644
--- a/drivers/net/ethernet/mscc/ocelot_stats.c
+++ b/drivers/net/ethernet/mscc/ocelot_stats.c
@@ -9,6 +9,225 @@
 #include <linux/workqueue.h>
 #include "ocelot.h"
 
+enum ocelot_stat {
+	OCELOT_STAT_RX_OCTETS,
+	OCELOT_STAT_RX_UNICAST,
+	OCELOT_STAT_RX_MULTICAST,
+	OCELOT_STAT_RX_BROADCAST,
+	OCELOT_STAT_RX_SHORTS,
+	OCELOT_STAT_RX_FRAGMENTS,
+	OCELOT_STAT_RX_JABBERS,
+	OCELOT_STAT_RX_CRC_ALIGN_ERRS,
+	OCELOT_STAT_RX_SYM_ERRS,
+	OCELOT_STAT_RX_64,
+	OCELOT_STAT_RX_65_127,
+	OCELOT_STAT_RX_128_255,
+	OCELOT_STAT_RX_256_511,
+	OCELOT_STAT_RX_512_1023,
+	OCELOT_STAT_RX_1024_1526,
+	OCELOT_STAT_RX_1527_MAX,
+	OCELOT_STAT_RX_PAUSE,
+	OCELOT_STAT_RX_CONTROL,
+	OCELOT_STAT_RX_LONGS,
+	OCELOT_STAT_RX_CLASSIFIED_DROPS,
+	OCELOT_STAT_RX_RED_PRIO_0,
+	OCELOT_STAT_RX_RED_PRIO_1,
+	OCELOT_STAT_RX_RED_PRIO_2,
+	OCELOT_STAT_RX_RED_PRIO_3,
+	OCELOT_STAT_RX_RED_PRIO_4,
+	OCELOT_STAT_RX_RED_PRIO_5,
+	OCELOT_STAT_RX_RED_PRIO_6,
+	OCELOT_STAT_RX_RED_PRIO_7,
+	OCELOT_STAT_RX_YELLOW_PRIO_0,
+	OCELOT_STAT_RX_YELLOW_PRIO_1,
+	OCELOT_STAT_RX_YELLOW_PRIO_2,
+	OCELOT_STAT_RX_YELLOW_PRIO_3,
+	OCELOT_STAT_RX_YELLOW_PRIO_4,
+	OCELOT_STAT_RX_YELLOW_PRIO_5,
+	OCELOT_STAT_RX_YELLOW_PRIO_6,
+	OCELOT_STAT_RX_YELLOW_PRIO_7,
+	OCELOT_STAT_RX_GREEN_PRIO_0,
+	OCELOT_STAT_RX_GREEN_PRIO_1,
+	OCELOT_STAT_RX_GREEN_PRIO_2,
+	OCELOT_STAT_RX_GREEN_PRIO_3,
+	OCELOT_STAT_RX_GREEN_PRIO_4,
+	OCELOT_STAT_RX_GREEN_PRIO_5,
+	OCELOT_STAT_RX_GREEN_PRIO_6,
+	OCELOT_STAT_RX_GREEN_PRIO_7,
+	OCELOT_STAT_TX_OCTETS,
+	OCELOT_STAT_TX_UNICAST,
+	OCELOT_STAT_TX_MULTICAST,
+	OCELOT_STAT_TX_BROADCAST,
+	OCELOT_STAT_TX_COLLISION,
+	OCELOT_STAT_TX_DROPS,
+	OCELOT_STAT_TX_PAUSE,
+	OCELOT_STAT_TX_64,
+	OCELOT_STAT_TX_65_127,
+	OCELOT_STAT_TX_128_255,
+	OCELOT_STAT_TX_256_511,
+	OCELOT_STAT_TX_512_1023,
+	OCELOT_STAT_TX_1024_1526,
+	OCELOT_STAT_TX_1527_MAX,
+	OCELOT_STAT_TX_YELLOW_PRIO_0,
+	OCELOT_STAT_TX_YELLOW_PRIO_1,
+	OCELOT_STAT_TX_YELLOW_PRIO_2,
+	OCELOT_STAT_TX_YELLOW_PRIO_3,
+	OCELOT_STAT_TX_YELLOW_PRIO_4,
+	OCELOT_STAT_TX_YELLOW_PRIO_5,
+	OCELOT_STAT_TX_YELLOW_PRIO_6,
+	OCELOT_STAT_TX_YELLOW_PRIO_7,
+	OCELOT_STAT_TX_GREEN_PRIO_0,
+	OCELOT_STAT_TX_GREEN_PRIO_1,
+	OCELOT_STAT_TX_GREEN_PRIO_2,
+	OCELOT_STAT_TX_GREEN_PRIO_3,
+	OCELOT_STAT_TX_GREEN_PRIO_4,
+	OCELOT_STAT_TX_GREEN_PRIO_5,
+	OCELOT_STAT_TX_GREEN_PRIO_6,
+	OCELOT_STAT_TX_GREEN_PRIO_7,
+	OCELOT_STAT_TX_AGED,
+	OCELOT_STAT_DROP_LOCAL,
+	OCELOT_STAT_DROP_TAIL,
+	OCELOT_STAT_DROP_YELLOW_PRIO_0,
+	OCELOT_STAT_DROP_YELLOW_PRIO_1,
+	OCELOT_STAT_DROP_YELLOW_PRIO_2,
+	OCELOT_STAT_DROP_YELLOW_PRIO_3,
+	OCELOT_STAT_DROP_YELLOW_PRIO_4,
+	OCELOT_STAT_DROP_YELLOW_PRIO_5,
+	OCELOT_STAT_DROP_YELLOW_PRIO_6,
+	OCELOT_STAT_DROP_YELLOW_PRIO_7,
+	OCELOT_STAT_DROP_GREEN_PRIO_0,
+	OCELOT_STAT_DROP_GREEN_PRIO_1,
+	OCELOT_STAT_DROP_GREEN_PRIO_2,
+	OCELOT_STAT_DROP_GREEN_PRIO_3,
+	OCELOT_STAT_DROP_GREEN_PRIO_4,
+	OCELOT_STAT_DROP_GREEN_PRIO_5,
+	OCELOT_STAT_DROP_GREEN_PRIO_6,
+	OCELOT_STAT_DROP_GREEN_PRIO_7,
+	OCELOT_NUM_STATS,
+};
+
+struct ocelot_stat_layout {
+	u32 reg;
+	char name[ETH_GSTRING_LEN];
+};
+
+/* 32-bit counter checked for wraparound by ocelot_port_update_stats()
+ * and copied to ocelot->stats.
+ */
+#define OCELOT_STAT(kind) \
+	[OCELOT_STAT_ ## kind] = { .reg = SYS_COUNT_ ## kind }
+/* Same as above, except also exported to ethtool -S. Standard counters should
+ * only be exposed to more specific interfaces rather than by their string name.
+ */
+#define OCELOT_STAT_ETHTOOL(kind, ethtool_name) \
+	[OCELOT_STAT_ ## kind] = { .reg = SYS_COUNT_ ## kind, .name = ethtool_name }
+
+#define OCELOT_COMMON_STATS \
+	OCELOT_STAT_ETHTOOL(RX_OCTETS, "rx_octets"), \
+	OCELOT_STAT_ETHTOOL(RX_UNICAST, "rx_unicast"), \
+	OCELOT_STAT_ETHTOOL(RX_MULTICAST, "rx_multicast"), \
+	OCELOT_STAT_ETHTOOL(RX_BROADCAST, "rx_broadcast"), \
+	OCELOT_STAT_ETHTOOL(RX_SHORTS, "rx_shorts"), \
+	OCELOT_STAT_ETHTOOL(RX_FRAGMENTS, "rx_fragments"), \
+	OCELOT_STAT_ETHTOOL(RX_JABBERS, "rx_jabbers"), \
+	OCELOT_STAT_ETHTOOL(RX_CRC_ALIGN_ERRS, "rx_crc_align_errs"), \
+	OCELOT_STAT_ETHTOOL(RX_SYM_ERRS, "rx_sym_errs"), \
+	OCELOT_STAT_ETHTOOL(RX_64, "rx_frames_below_65_octets"), \
+	OCELOT_STAT_ETHTOOL(RX_65_127, "rx_frames_65_to_127_octets"), \
+	OCELOT_STAT_ETHTOOL(RX_128_255, "rx_frames_128_to_255_octets"), \
+	OCELOT_STAT_ETHTOOL(RX_256_511, "rx_frames_256_to_511_octets"), \
+	OCELOT_STAT_ETHTOOL(RX_512_1023, "rx_frames_512_to_1023_octets"), \
+	OCELOT_STAT_ETHTOOL(RX_1024_1526, "rx_frames_1024_to_1526_octets"), \
+	OCELOT_STAT_ETHTOOL(RX_1527_MAX, "rx_frames_over_1526_octets"), \
+	OCELOT_STAT_ETHTOOL(RX_PAUSE, "rx_pause"), \
+	OCELOT_STAT_ETHTOOL(RX_CONTROL, "rx_control"), \
+	OCELOT_STAT_ETHTOOL(RX_LONGS, "rx_longs"), \
+	OCELOT_STAT_ETHTOOL(RX_CLASSIFIED_DROPS, "rx_classified_drops"), \
+	OCELOT_STAT_ETHTOOL(RX_RED_PRIO_0, "rx_red_prio_0"), \
+	OCELOT_STAT_ETHTOOL(RX_RED_PRIO_1, "rx_red_prio_1"), \
+	OCELOT_STAT_ETHTOOL(RX_RED_PRIO_2, "rx_red_prio_2"), \
+	OCELOT_STAT_ETHTOOL(RX_RED_PRIO_3, "rx_red_prio_3"), \
+	OCELOT_STAT_ETHTOOL(RX_RED_PRIO_4, "rx_red_prio_4"), \
+	OCELOT_STAT_ETHTOOL(RX_RED_PRIO_5, "rx_red_prio_5"), \
+	OCELOT_STAT_ETHTOOL(RX_RED_PRIO_6, "rx_red_prio_6"), \
+	OCELOT_STAT_ETHTOOL(RX_RED_PRIO_7, "rx_red_prio_7"), \
+	OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_0, "rx_yellow_prio_0"), \
+	OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_1, "rx_yellow_prio_1"), \
+	OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_2, "rx_yellow_prio_2"), \
+	OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_3, "rx_yellow_prio_3"), \
+	OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_4, "rx_yellow_prio_4"), \
+	OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_5, "rx_yellow_prio_5"), \
+	OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_6, "rx_yellow_prio_6"), \
+	OCELOT_STAT_ETHTOOL(RX_YELLOW_PRIO_7, "rx_yellow_prio_7"), \
+	OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_0, "rx_green_prio_0"), \
+	OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_1, "rx_green_prio_1"), \
+	OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_2, "rx_green_prio_2"), \
+	OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_3, "rx_green_prio_3"), \
+	OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_4, "rx_green_prio_4"), \
+	OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_5, "rx_green_prio_5"), \
+	OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_6, "rx_green_prio_6"), \
+	OCELOT_STAT_ETHTOOL(RX_GREEN_PRIO_7, "rx_green_prio_7"), \
+	OCELOT_STAT_ETHTOOL(TX_OCTETS, "tx_octets"), \
+	OCELOT_STAT_ETHTOOL(TX_UNICAST, "tx_unicast"), \
+	OCELOT_STAT_ETHTOOL(TX_MULTICAST, "tx_multicast"), \
+	OCELOT_STAT_ETHTOOL(TX_BROADCAST, "tx_broadcast"), \
+	OCELOT_STAT_ETHTOOL(TX_COLLISION, "tx_collision"), \
+	OCELOT_STAT_ETHTOOL(TX_DROPS, "tx_drops"), \
+	OCELOT_STAT_ETHTOOL(TX_PAUSE, "tx_pause"), \
+	OCELOT_STAT_ETHTOOL(TX_64, "tx_frames_below_65_octets"), \
+	OCELOT_STAT_ETHTOOL(TX_65_127, "tx_frames_65_to_127_octets"), \
+	OCELOT_STAT_ETHTOOL(TX_128_255, "tx_frames_128_255_octets"), \
+	OCELOT_STAT_ETHTOOL(TX_256_511, "tx_frames_256_511_octets"), \
+	OCELOT_STAT_ETHTOOL(TX_512_1023, "tx_frames_512_1023_octets"), \
+	OCELOT_STAT_ETHTOOL(TX_1024_1526, "tx_frames_1024_1526_octets"), \
+	OCELOT_STAT_ETHTOOL(TX_1527_MAX, "tx_frames_over_1526_octets"), \
+	OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_0, "tx_yellow_prio_0"), \
+	OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_1, "tx_yellow_prio_1"), \
+	OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_2, "tx_yellow_prio_2"), \
+	OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_3, "tx_yellow_prio_3"), \
+	OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_4, "tx_yellow_prio_4"), \
+	OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_5, "tx_yellow_prio_5"), \
+	OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_6, "tx_yellow_prio_6"), \
+	OCELOT_STAT_ETHTOOL(TX_YELLOW_PRIO_7, "tx_yellow_prio_7"), \
+	OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_0, "tx_green_prio_0"), \
+	OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_1, "tx_green_prio_1"), \
+	OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_2, "tx_green_prio_2"), \
+	OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_3, "tx_green_prio_3"), \
+	OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_4, "tx_green_prio_4"), \
+	OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_5, "tx_green_prio_5"), \
+	OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_6, "tx_green_prio_6"), \
+	OCELOT_STAT_ETHTOOL(TX_GREEN_PRIO_7, "tx_green_prio_7"), \
+	OCELOT_STAT_ETHTOOL(TX_AGED, "tx_aged"), \
+	OCELOT_STAT_ETHTOOL(DROP_LOCAL, "drop_local"), \
+	OCELOT_STAT_ETHTOOL(DROP_TAIL, "drop_tail"), \
+	OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_0, "drop_yellow_prio_0"), \
+	OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_1, "drop_yellow_prio_1"), \
+	OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_2, "drop_yellow_prio_2"), \
+	OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_3, "drop_yellow_prio_3"), \
+	OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_4, "drop_yellow_prio_4"), \
+	OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_5, "drop_yellow_prio_5"), \
+	OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_6, "drop_yellow_prio_6"), \
+	OCELOT_STAT_ETHTOOL(DROP_YELLOW_PRIO_7, "drop_yellow_prio_7"), \
+	OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_0, "drop_green_prio_0"), \
+	OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_1, "drop_green_prio_1"), \
+	OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_2, "drop_green_prio_2"), \
+	OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_3, "drop_green_prio_3"), \
+	OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_4, "drop_green_prio_4"), \
+	OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_5, "drop_green_prio_5"), \
+	OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_6, "drop_green_prio_6"), \
+	OCELOT_STAT_ETHTOOL(DROP_GREEN_PRIO_7, "drop_green_prio_7")
+
+struct ocelot_stats_region {
+	struct list_head node;
+	u32 base;
+	int count;
+	u32 *buf;
+};
+
+static const struct ocelot_stat_layout ocelot_stats_layout[OCELOT_NUM_STATS] = {
+	OCELOT_COMMON_STATS,
+};
+
 /* Read the counters from hardware and keep them in region->buf.
  * Caller must hold &ocelot->stat_view_lock.
  */
@@ -93,10 +312,10 @@ void ocelot_get_strings(struct ocelot *ocelot, int port, u32 sset, u8 *data)
 		return;
 
 	for (i = 0; i < OCELOT_NUM_STATS; i++) {
-		if (ocelot->stats_layout[i].name[0] == '\0')
+		if (ocelot_stats_layout[i].name[0] == '\0')
 			continue;
 
-		memcpy(data + i * ETH_GSTRING_LEN, ocelot->stats_layout[i].name,
+		memcpy(data + i * ETH_GSTRING_LEN, ocelot_stats_layout[i].name,
 		       ETH_GSTRING_LEN);
 	}
 }
@@ -137,7 +356,7 @@ int ocelot_get_sset_count(struct ocelot *ocelot, int port, int sset)
 		return -EOPNOTSUPP;
 
 	for (i = 0; i < OCELOT_NUM_STATS; i++)
-		if (ocelot->stats_layout[i].name[0] != '\0')
+		if (ocelot_stats_layout[i].name[0] != '\0')
 			num_stats++;
 
 	return num_stats;
@@ -154,7 +373,7 @@ static void ocelot_port_ethtool_stats_cb(struct ocelot *ocelot, int port,
 	for (i = 0; i < OCELOT_NUM_STATS; i++) {
 		int index = port * OCELOT_NUM_STATS + i;
 
-		if (ocelot->stats_layout[i].name[0] == '\0')
+		if (ocelot_stats_layout[i].name[0] == '\0')
 			continue;
 
 		*data++ = ocelot->stats[index];
@@ -383,16 +602,16 @@ EXPORT_SYMBOL(ocelot_port_get_stats64);
 static int ocelot_prepare_stats_regions(struct ocelot *ocelot)
 {
 	struct ocelot_stats_region *region = NULL;
-	unsigned int last;
+	unsigned int last = 0;
 	int i;
 
 	INIT_LIST_HEAD(&ocelot->stats_regions);
 
 	for (i = 0; i < OCELOT_NUM_STATS; i++) {
-		if (!ocelot->stats_layout[i].reg)
+		if (!ocelot_stats_layout[i].reg)
 			continue;
 
-		if (region && ocelot->stats_layout[i].reg == last + 4) {
+		if (region && ocelot_stats_layout[i].reg == last + 4) {
 			region->count++;
 		} else {
 			region = devm_kzalloc(ocelot->dev, sizeof(*region),
@@ -400,12 +619,18 @@ static int ocelot_prepare_stats_regions(struct ocelot *ocelot)
 			if (!region)
 				return -ENOMEM;
 
-			region->base = ocelot->stats_layout[i].reg;
+			/* enum ocelot_stat must be kept sorted in the same
+			 * order as ocelot_stats_layout[i].reg in order to have
+			 * efficient bulking
+			 */
+			WARN_ON(last >= ocelot_stats_layout[i].reg);
+
+			region->base = ocelot_stats_layout[i].reg;
 			region->count = 1;
 			list_add_tail(&region->node, &ocelot->stats_regions);
 		}
 
-		last = ocelot->stats_layout[i].reg;
+		last = ocelot_stats_layout[i].reg;
 	}
 
 	list_for_each_entry(region, &ocelot->stats_regions, node) {
@@ -456,3 +681,4 @@ void ocelot_stats_deinit(struct ocelot *ocelot)
 	cancel_delayed_work(&ocelot->stats_work);
 	destroy_workqueue(ocelot->stats_queue);
 }
+
diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
index 93431d2ff4f1..b097fd4a4061 100644
--- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
+++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
@@ -100,10 +100,6 @@ static const struct reg_field ocelot_regfields[REGFIELD_MAX] = {
 	[SYS_PAUSE_CFG_PAUSE_ENA] = REG_FIELD_ID(SYS_PAUSE_CFG, 0, 1, 12, 4),
 };
 
-static const struct ocelot_stat_layout ocelot_stats_layout[OCELOT_NUM_STATS] = {
-	OCELOT_COMMON_STATS,
-};
-
 static void ocelot_pll5_init(struct ocelot *ocelot)
 {
 	/* Configure PLL5. This will need a proper CCF driver
@@ -138,7 +134,6 @@ static int ocelot_chip_init(struct ocelot *ocelot, const struct ocelot_ops *ops)
 	int ret;
 
 	ocelot->map = ocelot_regmap;
-	ocelot->stats_layout = ocelot_stats_layout;
 	ocelot->num_mact_rows = 1024;
 	ocelot->ops = ops;