[PATCH v2 net-next 0/3] cleanup ocelot_stats exposure

[PATCH v2 net-next 0/3] cleanup ocelot_stats exposure

[Colin Foster]

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.


v1->v2
    * Fix unused variable warning from v1 (patch 1)
    * Pick up forgotten stats patch (patch 3)

Colin Foster (3):
  net: mscc: ocelot: remove redundant stats_layout pointers
  net: mscc: ocelot: remove unnecessary exposure of stats structures
  net: mscc: ocelot: issue a warning if stats are incorrectly ordered

 drivers/net/dsa/ocelot/felix.c             |   1 -
 drivers/net/dsa/ocelot/felix.h             |   1 -
 drivers/net/dsa/ocelot/felix_vsc9959.c     |   5 -
 drivers/net/dsa/ocelot/seville_vsc9953.c   |   5 -
 drivers/net/ethernet/mscc/ocelot_stats.c   | 244 ++++++++++++++++++++-
 drivers/net/ethernet/mscc/ocelot_vsc7514.c |   5 -
 include/soc/mscc/ocelot.h                  | 216 ------------------
 7 files changed, 235 insertions(+), 242 deletions(-)

-- 
2.25.1

[PATCH v2 net-next 1/3] net: mscc: ocelot: remove redundant stats_layout pointers

[Colin Foster]

Ever since commit 4d1d157fb6a4 ("net: mscc: ocelot: share the common stat
definitions between all drivers") the stats_layout entry in ocelot and
felix drivers have become redundant. Remove the unnecessary code.

Suggested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
---

v1->v2
    * Fix unused variable build warning in v1

---
 drivers/net/dsa/ocelot/felix.c             |  1 -
 drivers/net/dsa/ocelot/felix.h             |  1 -
 drivers/net/dsa/ocelot/felix_vsc9959.c     |  5 -----
 drivers/net/dsa/ocelot/seville_vsc9953.c   |  5 -----
 drivers/net/ethernet/mscc/ocelot_stats.c   | 20 ++++++++++++--------
 drivers/net/ethernet/mscc/ocelot_vsc7514.c |  5 -----
 include/soc/mscc/ocelot.h                  |  1 -
 7 files changed, 12 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..5dc132f61d6a 100644
--- a/drivers/net/ethernet/mscc/ocelot_stats.c
+++ b/drivers/net/ethernet/mscc/ocelot_stats.c
@@ -9,6 +9,10 @@
 #include <linux/workqueue.h>
 #include "ocelot.h"
 
+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 +97,10 @@ 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 +141,7 @@ 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 +158,7 @@ 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];
@@ -389,10 +393,10 @@ static int ocelot_prepare_stats_regions(struct ocelot *ocelot)
 	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 +404,12 @@ static int ocelot_prepare_stats_regions(struct ocelot *ocelot)
 			if (!region)
 				return -ENOMEM;
 
-			region->base = 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) {
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;
 
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index 967ba30ea636..995b5950afe6 100644
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -967,7 +967,6 @@ struct ocelot {
 	struct regmap			*targets[TARGET_MAX];
 	struct regmap_field		*regfields[REGFIELD_MAX];
 	const u32 *const		*map;
-	const struct ocelot_stat_layout	*stats_layout;
 	struct list_head		stats_regions;
 
 	u32				pool_size[OCELOT_SB_NUM][OCELOT_SB_POOL_NUM];
-- 
2.25.1

Re: [PATCH v2 net-next 1/3] net: mscc: ocelot: remove redundant stats_layout pointers

[Vladimir Oltean]

On Sat, Nov 19, 2022 at 03:14:04PM -0800, Colin Foster wrote:
> Ever since commit 4d1d157fb6a4 ("net: mscc: ocelot: share the common stat
> definitions between all drivers") the stats_layout entry in ocelot and
> felix drivers have become redundant. Remove the unnecessary code.
> 
> Suggested-by: Vladimir Oltean <olteanv@gmail.com>
> Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
> ---
> 
> v1->v2
>     * Fix unused variable build warning in v1

Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>

[PATCH v2 net-next 2/3] net: mscc: ocelot: remove unnecessary exposure of stats structures

[Colin Foster]

Since commit 4d1d157fb6a4 ("net: mscc: ocelot: share the common stat
definitions between all drivers") there is no longer a need to share the
stats structures to the world. Relocate these definitions to inside
ocelot_stats.c instead of a global include header.

Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
---

v1->v2
    * No change

---
 drivers/net/ethernet/mscc/ocelot_stats.c | 216 +++++++++++++++++++++++
 include/soc/mscc/ocelot.h                | 215 ----------------------
 2 files changed, 216 insertions(+), 215 deletions(-)

diff --git a/drivers/net/ethernet/mscc/ocelot_stats.c b/drivers/net/ethernet/mscc/ocelot_stats.c
index 5dc132f61d6a..68e9f450c468 100644
--- a/drivers/net/ethernet/mscc/ocelot_stats.c
+++ b/drivers/net/ethernet/mscc/ocelot_stats.c
@@ -9,6 +9,221 @@
 #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,
 };
@@ -460,3 +675,4 @@ void ocelot_stats_deinit(struct ocelot *ocelot)
 	cancel_delayed_work(&ocelot->stats_work);
 	destroy_workqueue(ocelot->stats_queue);
 }
+
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index 995b5950afe6..df62be80a193 100644
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -596,221 +596,6 @@ enum ocelot_ptp_pins {
 	TOD_ACC_PIN
 };
 
-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;
-};
-
 enum ocelot_tag_prefix {
 	OCELOT_TAG_PREFIX_DISABLED	= 0,
 	OCELOT_TAG_PREFIX_NONE,
-- 
2.25.1

Re: [PATCH v2 net-next 2/3] net: mscc: ocelot: remove unnecessary exposure of stats structures

[Vladimir Oltean]

On Sat, Nov 19, 2022 at 03:14:05PM -0800, Colin Foster wrote:
> diff --git a/drivers/net/ethernet/mscc/ocelot_stats.c b/drivers/net/ethernet/mscc/ocelot_stats.c
> index 5dc132f61d6a..68e9f450c468 100644
> --- a/drivers/net/ethernet/mscc/ocelot_stats.c
> +++ b/drivers/net/ethernet/mscc/ocelot_stats.c
> @@ -460,3 +675,4 @@ void ocelot_stats_deinit(struct ocelot *ocelot)
>  	cancel_delayed_work(&ocelot->stats_work);
>  	destroy_workqueue(ocelot->stats_queue);
>  }
> +

There is a stray blank line at the end of ocelot_stats.c which this
patch adds and which doesn't belong. Either you keep this patch set
and fix it up later (I don't see another reason to resend except for
this), or you resend it. If maintainers don't complain about the new
line while the patch gets applied, I'm okay either way.

Anyway,

Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>

Re: [PATCH v2 net-next 2/3] net: mscc: ocelot: remove unnecessary exposure of stats structures

[Paolo Abeni]

On Sat, 2022-11-19 at 15:14 -0800, Colin Foster wrote:
> Since commit 4d1d157fb6a4 ("net: mscc: ocelot: share the common stat
> definitions between all drivers") there is no longer a need to share the
> stats structures to the world. Relocate these definitions to inside
> ocelot_stats.c instead of a global include header.
> 
> Signed-off-by: Colin Foster <colin.foster@in-advantage.com>

I think it's preferable to keep the moved code verbatim as-is instead
of additionally fixing the checkpatch warning in the same patch.

The mentioned cleanup could be a follow-up patch - togethar with the
trailing empty line removal.

Cheers,

Paolo

[PATCH v2 net-next 3/3] net: mscc: ocelot: issue a warning if stats are incorrectly ordered

[Colin Foster]

Ocelot uses regmap_bulk_read() operations to efficiently read stats
registers. Currently the implementation relies on the stats layout to be
ordered to be most efficient.

Issue a warning if any future implementations happen to break this pattern.

Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Co-developed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---

v1->v2
    * New patch, picked up from previous mailings

---
 drivers/net/ethernet/mscc/ocelot_stats.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mscc/ocelot_stats.c b/drivers/net/ethernet/mscc/ocelot_stats.c
index 68e9f450c468..1478c3b21af1 100644
--- a/drivers/net/ethernet/mscc/ocelot_stats.c
+++ b/drivers/net/ethernet/mscc/ocelot_stats.c
@@ -602,7 +602,7 @@ 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);
@@ -619,6 +619,12 @@ static int ocelot_prepare_stats_regions(struct ocelot *ocelot)
 			if (!region)
 				return -ENOMEM;
 
+			/* 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);
-- 
2.25.1

Re: [PATCH v2 net-next 3/3] net: mscc: ocelot: issue a warning if stats are incorrectly ordered

[Vladimir Oltean]

On Sat, Nov 19, 2022 at 03:14:06PM -0800, Colin Foster wrote:
> Ocelot uses regmap_bulk_read() operations to efficiently read stats
> registers. Currently the implementation relies on the stats layout to be
> ordered to be most efficient.
> 
> Issue a warning if any future implementations happen to break this pattern.
> 
> Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
> Co-developed-by: Vladimir Oltean <vladimir.oltean@nxp.com>

Assertion holds even with my MAC Merge patch set that's in preparation,
so things are good.

Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>

Re: [PATCH v2 net-next 0/3] cleanup ocelot_stats exposure

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (master)
by Paolo Abeni <pabeni@redhat.com>:

On Sat, 19 Nov 2022 15:14:03 -0800 you wrote:
> 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.
> 
> [...]

Here is the summary with links:
  - [v2,net-next,1/3] net: mscc: ocelot: remove redundant stats_layout pointers
    https://git.kernel.org/netdev/net-next/c/33d5eeb9a684
  - [v2,net-next,2/3] net: mscc: ocelot: remove unnecessary exposure of stats structures
    https://git.kernel.org/netdev/net-next/c/a3bb8f521fd8
  - [v2,net-next,3/3] net: mscc: ocelot: issue a warning if stats are incorrectly ordered
    https://git.kernel.org/netdev/net-next/c/877e7b7c3b12

You are awesome, thank you!
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