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* [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support
@ 2023-12-14 13:50 Tobias Waldekranz
  2023-12-14 13:50 ` [PATCH v4 net-next 1/8] net: dsa: mv88e6xxx: Push locking into stats snapshotting Tobias Waldekranz
                   ` (8 more replies)
  0 siblings, 9 replies; 11+ messages in thread
From: Tobias Waldekranz @ 2023-12-14 13:50 UTC (permalink / raw)
  To: davem, kuba; +Cc: andrew, f.fainelli, olteanv, netdev

The majority of the changes (2/8) are about refactoring the existing
ethtool statistics support to make it possible to read individual
counters, rather than the whole set.

4/8 tries to collect all information about a stat in a single place
using a mapper macro, which is then used to generate the original list
of stats, along with a matching enum. checkpatch is less than amused
with this construct, but prior art exists (__BPF_FUNC_MAPPER in
include/uapi/linux/bpf.h, for example).

To support the histogram counters from the "rmon" group, we have to
change mv88e6xxx's configuration of them. Instead of counting rx and
tx, we restrict them to rx-only. 6/8 has the details.

With that in place, adding the actual counter groups is pretty
straight forward (5,7/8).

Tie it all together with a selftest (8/8).

v3 -> v4:
- Return size_t from mv88e6xxx_stats_get_stats
- Spelling errors in commit message of 6/8
- Improve selftest:
  - Report progress per-bucket
  - Test both ports in the pair
  - Increase MTU, if required

v2 -> v3:
- Added 6/8
- Added 8/8

v1 -> v2:
- Added 1/6
- Added 3/6
- Changed prototype of stats operation to reflect the fact that the
  number of read stats are returned, no errors
- Moved comma into MV88E6XXX_HW_STAT_MAPPER definition
- Avoid the construction of mapping table iteration which relied on
  struct layouts outside of mv88e6xxx's control

Tobias Waldekranz (8):
  net: dsa: mv88e6xxx: Push locking into stats snapshotting
  net: dsa: mv88e6xxx: Create API to read a single stat counter
  net: dsa: mv88e6xxx: Fix mv88e6352_serdes_get_stats error path
  net: dsa: mv88e6xxx: Give each hw stat an ID
  net: dsa: mv88e6xxx: Add "eth-mac" counter group support
  net: dsa: mv88e6xxx: Limit histogram counters to ingress traffic
  net: dsa: mv88e6xxx: Add "rmon" counter group support
  selftests: forwarding: ethtool_rmon: Add histogram counter test

 drivers/net/dsa/mv88e6xxx/chip.c              | 392 ++++++++++++------
 drivers/net/dsa/mv88e6xxx/chip.h              |  31 +-
 drivers/net/dsa/mv88e6xxx/global1.c           |   7 +-
 drivers/net/dsa/mv88e6xxx/serdes.c            |  10 +-
 drivers/net/dsa/mv88e6xxx/serdes.h            |   8 +-
 .../testing/selftests/net/forwarding/Makefile |   1 +
 .../selftests/net/forwarding/ethtool_rmon.sh  | 143 +++++++
 tools/testing/selftests/net/forwarding/lib.sh |   9 +
 8 files changed, 435 insertions(+), 166 deletions(-)
 create mode 100755 tools/testing/selftests/net/forwarding/ethtool_rmon.sh

-- 
2.34.1


^ permalink raw reply	[flat|nested] 11+ messages in thread
* [PATCH v4 net-next 1/8] net: dsa: mv88e6xxx: Push locking into stats snapshotting
  2023-12-14 13:50 [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support Tobias Waldekranz
@ 2023-12-14 13:50 ` Tobias Waldekranz
  2023-12-14 13:50 ` [PATCH v4 net-next 2/8] net: dsa: mv88e6xxx: Create API to read a single stat counter Tobias Waldekranz
                   ` (7 subsequent siblings)
  8 siblings, 0 replies; 11+ messages in thread
From: Tobias Waldekranz @ 2023-12-14 13:50 UTC (permalink / raw)
  To: davem, kuba
  Cc: andrew, f.fainelli, olteanv, netdev, Vladimir Oltean,
	Florian Fainelli

This is more consistent with the driver's general structure.

Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 07a22c74fe81..4bd3ceffde17 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -943,10 +943,16 @@ static void mv88e6xxx_mac_link_up(struct dsa_switch *ds, int port,
 
 static int mv88e6xxx_stats_snapshot(struct mv88e6xxx_chip *chip, int port)
 {
+	int err;
+
 	if (!chip->info->ops->stats_snapshot)
 		return -EOPNOTSUPP;
 
-	return chip->info->ops->stats_snapshot(chip, port);
+	mv88e6xxx_reg_lock(chip);
+	err = chip->info->ops->stats_snapshot(chip, port);
+	mv88e6xxx_reg_unlock(chip);
+
+	return err;
 }
 
 static struct mv88e6xxx_hw_stat mv88e6xxx_hw_stats[] = {
@@ -1284,16 +1290,11 @@ static void mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds, int port,
 	struct mv88e6xxx_chip *chip = ds->priv;
 	int ret;
 
-	mv88e6xxx_reg_lock(chip);
-
 	ret = mv88e6xxx_stats_snapshot(chip, port);
-	mv88e6xxx_reg_unlock(chip);
-
 	if (ret < 0)
 		return;
 
 	mv88e6xxx_get_stats(chip, port, data);
-
 }
 
 static int mv88e6xxx_get_regs_len(struct dsa_switch *ds, int port)
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 net-next 2/8] net: dsa: mv88e6xxx: Create API to read a single stat counter
  2023-12-14 13:50 [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support Tobias Waldekranz
  2023-12-14 13:50 ` [PATCH v4 net-next 1/8] net: dsa: mv88e6xxx: Push locking into stats snapshotting Tobias Waldekranz
@ 2023-12-14 13:50 ` Tobias Waldekranz
  2023-12-14 13:50 ` [PATCH v4 net-next 3/8] net: dsa: mv88e6xxx: Fix mv88e6352_serdes_get_stats error path Tobias Waldekranz
                   ` (6 subsequent siblings)
  8 siblings, 0 replies; 11+ messages in thread
From: Tobias Waldekranz @ 2023-12-14 13:50 UTC (permalink / raw)
  To: davem, kuba
  Cc: andrew, f.fainelli, olteanv, netdev, Vladimir Oltean,
	Florian Fainelli

This change contains no functional change. We simply push the hardware
specific stats logic to a function reading a single counter, rather
than the whole set.

This is a preparatory change for the upcoming standard ethtool
statistics support (i.e. "eth-mac", "eth-ctrl" etc.).

Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 162 ++++++++++++++++++-------------
 drivers/net/dsa/mv88e6xxx/chip.h |  27 +++---
 2 files changed, 106 insertions(+), 83 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 4bd3ceffde17..1f41479fd2a1 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1018,7 +1018,7 @@ static struct mv88e6xxx_hw_stat mv88e6xxx_hw_stats[] = {
 };
 
 static uint64_t _mv88e6xxx_get_ethtool_stat(struct mv88e6xxx_chip *chip,
-					    struct mv88e6xxx_hw_stat *s,
+					    const struct mv88e6xxx_hw_stat *s,
 					    int port, u16 bank1_select,
 					    u16 histogram)
 {
@@ -1201,59 +1201,82 @@ static int mv88e6xxx_get_sset_count(struct dsa_switch *ds, int port, int sset)
 	return count;
 }
 
-static int mv88e6xxx_stats_get_stats(struct mv88e6xxx_chip *chip, int port,
-				     uint64_t *data, int types,
-				     u16 bank1_select, u16 histogram)
+static size_t mv88e6095_stats_get_stat(struct mv88e6xxx_chip *chip, int port,
+				       const struct mv88e6xxx_hw_stat *stat,
+				       uint64_t *data)
 {
-	struct mv88e6xxx_hw_stat *stat;
-	int i, j;
+	if (!(stat->type & (STATS_TYPE_BANK0 | STATS_TYPE_PORT)))
+		return 0;
 
-	for (i = 0, j = 0; i < ARRAY_SIZE(mv88e6xxx_hw_stats); i++) {
-		stat = &mv88e6xxx_hw_stats[i];
-		if (stat->type & types) {
-			mv88e6xxx_reg_lock(chip);
-			data[j] = _mv88e6xxx_get_ethtool_stat(chip, stat, port,
-							      bank1_select,
-							      histogram);
-			mv88e6xxx_reg_unlock(chip);
+	*data = _mv88e6xxx_get_ethtool_stat(chip, stat, port, 0,
+					    MV88E6XXX_G1_STATS_OP_HIST_RX_TX);
+	return 1;
+}
 
-			j++;
-		}
-	}
-	return j;
+static size_t mv88e6250_stats_get_stat(struct mv88e6xxx_chip *chip, int port,
+				       const struct mv88e6xxx_hw_stat *stat,
+				       uint64_t *data)
+{
+	if (!(stat->type & STATS_TYPE_BANK0))
+		return 0;
+
+	*data = _mv88e6xxx_get_ethtool_stat(chip, stat, port, 0,
+					    MV88E6XXX_G1_STATS_OP_HIST_RX_TX);
+	return 1;
 }
 
-static int mv88e6095_stats_get_stats(struct mv88e6xxx_chip *chip, int port,
-				     uint64_t *data)
+static size_t mv88e6320_stats_get_stat(struct mv88e6xxx_chip *chip, int port,
+				       const struct mv88e6xxx_hw_stat *stat,
+				       uint64_t *data)
 {
-	return mv88e6xxx_stats_get_stats(chip, port, data,
-					 STATS_TYPE_BANK0 | STATS_TYPE_PORT,
-					 0, MV88E6XXX_G1_STATS_OP_HIST_RX_TX);
+	if (!(stat->type & (STATS_TYPE_BANK0 | STATS_TYPE_BANK1)))
+		return 0;
+
+	*data = _mv88e6xxx_get_ethtool_stat(chip, stat, port,
+					    MV88E6XXX_G1_STATS_OP_BANK_1_BIT_9,
+					    MV88E6XXX_G1_STATS_OP_HIST_RX_TX);
+	return 1;
 }
 
-static int mv88e6250_stats_get_stats(struct mv88e6xxx_chip *chip, int port,
-				     uint64_t *data)
+static size_t mv88e6390_stats_get_stat(struct mv88e6xxx_chip *chip, int port,
+				       const struct mv88e6xxx_hw_stat *stat,
+				       uint64_t *data)
 {
-	return mv88e6xxx_stats_get_stats(chip, port, data, STATS_TYPE_BANK0,
-					 0, MV88E6XXX_G1_STATS_OP_HIST_RX_TX);
+	if (!(stat->type & (STATS_TYPE_BANK0 | STATS_TYPE_BANK1)))
+		return 0;
+
+	*data = _mv88e6xxx_get_ethtool_stat(chip, stat, port,
+					    MV88E6XXX_G1_STATS_OP_BANK_1_BIT_10,
+					    0);
+	return 1;
 }
 
-static int mv88e6320_stats_get_stats(struct mv88e6xxx_chip *chip, int port,
-				     uint64_t *data)
+static size_t mv88e6xxx_stats_get_stat(struct mv88e6xxx_chip *chip, int port,
+				       const struct mv88e6xxx_hw_stat *stat,
+				       uint64_t *data)
 {
-	return mv88e6xxx_stats_get_stats(chip, port, data,
-					 STATS_TYPE_BANK0 | STATS_TYPE_BANK1,
-					 MV88E6XXX_G1_STATS_OP_BANK_1_BIT_9,
-					 MV88E6XXX_G1_STATS_OP_HIST_RX_TX);
+	int ret = 0;
+
+	if (chip->info->ops->stats_get_stat) {
+		mv88e6xxx_reg_lock(chip);
+		ret = chip->info->ops->stats_get_stat(chip, port, stat, data);
+		mv88e6xxx_reg_unlock(chip);
+	}
+
+	return ret;
 }
 
-static int mv88e6390_stats_get_stats(struct mv88e6xxx_chip *chip, int port,
-				     uint64_t *data)
+static size_t mv88e6xxx_stats_get_stats(struct mv88e6xxx_chip *chip, int port,
+					uint64_t *data)
 {
-	return mv88e6xxx_stats_get_stats(chip, port, data,
-					 STATS_TYPE_BANK0 | STATS_TYPE_BANK1,
-					 MV88E6XXX_G1_STATS_OP_BANK_1_BIT_10,
-					 0);
+	struct mv88e6xxx_hw_stat *stat;
+	size_t i, j;
+
+	for (i = 0, j = 0; i < ARRAY_SIZE(mv88e6xxx_hw_stats); i++) {
+		stat = &mv88e6xxx_hw_stats[i];
+		j += mv88e6xxx_stats_get_stat(chip, port, stat, &data[j]);
+	}
+	return j;
 }
 
 static void mv88e6xxx_atu_vtu_get_stats(struct mv88e6xxx_chip *chip, int port,
@@ -1269,10 +1292,9 @@ static void mv88e6xxx_atu_vtu_get_stats(struct mv88e6xxx_chip *chip, int port,
 static void mv88e6xxx_get_stats(struct mv88e6xxx_chip *chip, int port,
 				uint64_t *data)
 {
-	int count = 0;
+	size_t count;
 
-	if (chip->info->ops->stats_get_stats)
-		count = chip->info->ops->stats_get_stats(chip, port, data);
+	count = mv88e6xxx_stats_get_stats(chip, port, data);
 
 	mv88e6xxx_reg_lock(chip);
 	if (chip->info->ops->serdes_get_stats) {
@@ -3988,7 +4010,7 @@ static const struct mv88e6xxx_ops mv88e6085_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -4026,7 +4048,7 @@ static const struct mv88e6xxx_ops mv88e6095_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.mgmt_rsvd2cpu = mv88e6185_g2_mgmt_rsvd2cpu,
 	.ppu_enable = mv88e6185_g1_ppu_enable,
 	.ppu_disable = mv88e6185_g1_ppu_disable,
@@ -4067,7 +4089,7 @@ static const struct mv88e6xxx_ops mv88e6097_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -4109,7 +4131,7 @@ static const struct mv88e6xxx_ops mv88e6123_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -4152,7 +4174,7 @@ static const struct mv88e6xxx_ops mv88e6131_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -4201,7 +4223,7 @@ static const struct mv88e6xxx_ops mv88e6141_ops = {
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
-	.stats_get_stats = mv88e6390_stats_get_stats,
+	.stats_get_stat = mv88e6390_stats_get_stat,
 	.set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.set_egress_port = mv88e6390_g1_set_egress_port,
 	.watchdog_ops = &mv88e6390_watchdog_ops,
@@ -4256,7 +4278,7 @@ static const struct mv88e6xxx_ops mv88e6161_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -4294,7 +4316,7 @@ static const struct mv88e6xxx_ops mv88e6165_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -4342,7 +4364,7 @@ static const struct mv88e6xxx_ops mv88e6171_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -4391,7 +4413,7 @@ static const struct mv88e6xxx_ops mv88e6172_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -4442,7 +4464,7 @@ static const struct mv88e6xxx_ops mv88e6175_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -4491,7 +4513,7 @@ static const struct mv88e6xxx_ops mv88e6176_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -4536,7 +4558,7 @@ static const struct mv88e6xxx_ops mv88e6185_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -4585,7 +4607,7 @@ static const struct mv88e6xxx_ops mv88e6190_ops = {
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
-	.stats_get_stats = mv88e6390_stats_get_stats,
+	.stats_get_stat = mv88e6390_stats_get_stat,
 	.set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.set_egress_port = mv88e6390_g1_set_egress_port,
 	.watchdog_ops = &mv88e6390_watchdog_ops,
@@ -4643,7 +4665,7 @@ static const struct mv88e6xxx_ops mv88e6190x_ops = {
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
-	.stats_get_stats = mv88e6390_stats_get_stats,
+	.stats_get_stat = mv88e6390_stats_get_stat,
 	.set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.set_egress_port = mv88e6390_g1_set_egress_port,
 	.watchdog_ops = &mv88e6390_watchdog_ops,
@@ -4699,7 +4721,7 @@ static const struct mv88e6xxx_ops mv88e6191_ops = {
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
-	.stats_get_stats = mv88e6390_stats_get_stats,
+	.stats_get_stat = mv88e6390_stats_get_stat,
 	.set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.set_egress_port = mv88e6390_g1_set_egress_port,
 	.watchdog_ops = &mv88e6390_watchdog_ops,
@@ -4758,7 +4780,7 @@ static const struct mv88e6xxx_ops mv88e6240_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -4811,7 +4833,7 @@ static const struct mv88e6xxx_ops mv88e6250_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6250_stats_get_sset_count,
 	.stats_get_strings = mv88e6250_stats_get_strings,
-	.stats_get_stats = mv88e6250_stats_get_stats,
+	.stats_get_stat = mv88e6250_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6250_watchdog_ops,
@@ -4858,7 +4880,7 @@ static const struct mv88e6xxx_ops mv88e6290_ops = {
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
-	.stats_get_stats = mv88e6390_stats_get_stats,
+	.stats_get_stat = mv88e6390_stats_get_stat,
 	.set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.set_egress_port = mv88e6390_g1_set_egress_port,
 	.watchdog_ops = &mv88e6390_watchdog_ops,
@@ -4917,7 +4939,7 @@ static const struct mv88e6xxx_ops mv88e6320_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
-	.stats_get_stats = mv88e6320_stats_get_stats,
+	.stats_get_stat = mv88e6320_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6390_watchdog_ops,
@@ -4964,7 +4986,7 @@ static const struct mv88e6xxx_ops mv88e6321_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
-	.stats_get_stats = mv88e6320_stats_get_stats,
+	.stats_get_stat = mv88e6320_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6390_watchdog_ops,
@@ -5013,7 +5035,7 @@ static const struct mv88e6xxx_ops mv88e6341_ops = {
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
-	.stats_get_stats = mv88e6390_stats_get_stats,
+	.stats_get_stat = mv88e6390_stats_get_stat,
 	.set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.set_egress_port = mv88e6390_g1_set_egress_port,
 	.watchdog_ops = &mv88e6390_watchdog_ops,
@@ -5071,7 +5093,7 @@ static const struct mv88e6xxx_ops mv88e6350_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -5117,7 +5139,7 @@ static const struct mv88e6xxx_ops mv88e6351_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -5168,7 +5190,7 @@ static const struct mv88e6xxx_ops mv88e6352_ops = {
 	.stats_set_histogram = mv88e6095_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6095_stats_get_sset_count,
 	.stats_get_strings = mv88e6095_stats_get_strings,
-	.stats_get_stats = mv88e6095_stats_get_stats,
+	.stats_get_stat = mv88e6095_stats_get_stat,
 	.set_cpu_port = mv88e6095_g1_set_cpu_port,
 	.set_egress_port = mv88e6095_g1_set_egress_port,
 	.watchdog_ops = &mv88e6097_watchdog_ops,
@@ -5230,7 +5252,7 @@ static const struct mv88e6xxx_ops mv88e6390_ops = {
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
-	.stats_get_stats = mv88e6390_stats_get_stats,
+	.stats_get_stat = mv88e6390_stats_get_stat,
 	.set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.set_egress_port = mv88e6390_g1_set_egress_port,
 	.watchdog_ops = &mv88e6390_watchdog_ops,
@@ -5292,7 +5314,7 @@ static const struct mv88e6xxx_ops mv88e6390x_ops = {
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
-	.stats_get_stats = mv88e6390_stats_get_stats,
+	.stats_get_stat = mv88e6390_stats_get_stat,
 	.set_cpu_port = mv88e6390_g1_set_cpu_port,
 	.set_egress_port = mv88e6390_g1_set_egress_port,
 	.watchdog_ops = &mv88e6390_watchdog_ops,
@@ -5354,7 +5376,7 @@ static const struct mv88e6xxx_ops mv88e6393x_ops = {
 	.stats_set_histogram = mv88e6390_g1_stats_set_histogram,
 	.stats_get_sset_count = mv88e6320_stats_get_sset_count,
 	.stats_get_strings = mv88e6320_stats_get_strings,
-	.stats_get_stats = mv88e6390_stats_get_stats,
+	.stats_get_stat = mv88e6390_stats_get_stat,
 	/* .set_cpu_port is missing because this family does not support a global
 	 * CPU port, only per port CPU port which is set via
 	 * .port_set_upstream_port method.
diff --git a/drivers/net/dsa/mv88e6xxx/chip.h b/drivers/net/dsa/mv88e6xxx/chip.h
index 44383a03ef2f..c3c53ef543e5 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.h
+++ b/drivers/net/dsa/mv88e6xxx/chip.h
@@ -318,6 +318,17 @@ struct mv88e6xxx_mst {
 	struct mv88e6xxx_stu_entry stu;
 };
 
+#define STATS_TYPE_PORT		BIT(0)
+#define STATS_TYPE_BANK0	BIT(1)
+#define STATS_TYPE_BANK1	BIT(2)
+
+struct mv88e6xxx_hw_stat {
+	char string[ETH_GSTRING_LEN];
+	size_t size;
+	int reg;
+	int type;
+};
+
 struct mv88e6xxx_chip {
 	const struct mv88e6xxx_info *info;
 
@@ -574,8 +585,9 @@ struct mv88e6xxx_ops {
 	/* Return the number of strings describing statistics */
 	int (*stats_get_sset_count)(struct mv88e6xxx_chip *chip);
 	int (*stats_get_strings)(struct mv88e6xxx_chip *chip,  uint8_t *data);
-	int (*stats_get_stats)(struct mv88e6xxx_chip *chip,  int port,
-			       uint64_t *data);
+	size_t (*stats_get_stat)(struct mv88e6xxx_chip *chip, int port,
+				 const struct mv88e6xxx_hw_stat *stat,
+				 uint64_t *data);
 	int (*set_cpu_port)(struct mv88e6xxx_chip *chip, int port);
 	int (*set_egress_port)(struct mv88e6xxx_chip *chip,
 			       enum mv88e6xxx_egress_direction direction,
@@ -727,17 +739,6 @@ struct mv88e6xxx_pcs_ops {
 
 };
 
-#define STATS_TYPE_PORT		BIT(0)
-#define STATS_TYPE_BANK0	BIT(1)
-#define STATS_TYPE_BANK1	BIT(2)
-
-struct mv88e6xxx_hw_stat {
-	char string[ETH_GSTRING_LEN];
-	size_t size;
-	int reg;
-	int type;
-};
-
 static inline bool mv88e6xxx_has_stu(struct mv88e6xxx_chip *chip)
 {
 	return chip->info->max_sid > 0 &&
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 net-next 3/8] net: dsa: mv88e6xxx: Fix mv88e6352_serdes_get_stats error path
  2023-12-14 13:50 [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support Tobias Waldekranz
  2023-12-14 13:50 ` [PATCH v4 net-next 1/8] net: dsa: mv88e6xxx: Push locking into stats snapshotting Tobias Waldekranz
  2023-12-14 13:50 ` [PATCH v4 net-next 2/8] net: dsa: mv88e6xxx: Create API to read a single stat counter Tobias Waldekranz
@ 2023-12-14 13:50 ` Tobias Waldekranz
  2023-12-14 13:50 ` [PATCH v4 net-next 4/8] net: dsa: mv88e6xxx: Give each hw stat an ID Tobias Waldekranz
                   ` (5 subsequent siblings)
  8 siblings, 0 replies; 11+ messages in thread
From: Tobias Waldekranz @ 2023-12-14 13:50 UTC (permalink / raw)
  To: davem, kuba
  Cc: andrew, f.fainelli, olteanv, netdev, Vladimir Oltean,
	Florian Fainelli

mv88e6xxx_get_stats, which collects stats from various sources,
expects all callees to return the number of stats read. If an error
occurs, 0 should be returned.

Prevent future mishaps of this kind by updating the return type to
reflect this contract.

Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
---
 drivers/net/dsa/mv88e6xxx/chip.h   |  4 ++--
 drivers/net/dsa/mv88e6xxx/serdes.c | 10 +++++-----
 drivers/net/dsa/mv88e6xxx/serdes.h |  8 ++++----
 3 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.h b/drivers/net/dsa/mv88e6xxx/chip.h
index c3c53ef543e5..85eb293381a7 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.h
+++ b/drivers/net/dsa/mv88e6xxx/chip.h
@@ -613,8 +613,8 @@ struct mv88e6xxx_ops {
 	int (*serdes_get_sset_count)(struct mv88e6xxx_chip *chip, int port);
 	int (*serdes_get_strings)(struct mv88e6xxx_chip *chip,  int port,
 				  uint8_t *data);
-	int (*serdes_get_stats)(struct mv88e6xxx_chip *chip,  int port,
-				uint64_t *data);
+	size_t (*serdes_get_stats)(struct mv88e6xxx_chip *chip, int port,
+				   uint64_t *data);
 
 	/* SERDES registers for ethtool */
 	int (*serdes_get_regs_len)(struct mv88e6xxx_chip *chip,  int port);
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.c b/drivers/net/dsa/mv88e6xxx/serdes.c
index 3b4b42651fa3..01ea53940786 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.c
+++ b/drivers/net/dsa/mv88e6xxx/serdes.c
@@ -177,8 +177,8 @@ static uint64_t mv88e6352_serdes_get_stat(struct mv88e6xxx_chip *chip,
 	return val;
 }
 
-int mv88e6352_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
-			       uint64_t *data)
+size_t mv88e6352_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
+				  uint64_t *data)
 {
 	struct mv88e6xxx_port *mv88e6xxx_port = &chip->ports[port];
 	struct mv88e6352_serdes_hw_stat *stat;
@@ -187,7 +187,7 @@ int mv88e6352_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
 
 	err = mv88e6352_g2_scratch_port_has_serdes(chip, port);
 	if (err <= 0)
-		return err;
+		return 0;
 
 	BUILD_BUG_ON(ARRAY_SIZE(mv88e6352_serdes_hw_stats) >
 		     ARRAY_SIZE(mv88e6xxx_port->serdes_stats));
@@ -429,8 +429,8 @@ static uint64_t mv88e6390_serdes_get_stat(struct mv88e6xxx_chip *chip, int lane,
 	return reg[0] | ((u64)reg[1] << 16) | ((u64)reg[2] << 32);
 }
 
-int mv88e6390_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
-			       uint64_t *data)
+size_t mv88e6390_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
+				  uint64_t *data)
 {
 	struct mv88e6390_serdes_hw_stat *stat;
 	int lane;
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.h b/drivers/net/dsa/mv88e6xxx/serdes.h
index aac95cab46e3..ff5c3ab31e15 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.h
+++ b/drivers/net/dsa/mv88e6xxx/serdes.h
@@ -127,13 +127,13 @@ unsigned int mv88e6390_serdes_irq_mapping(struct mv88e6xxx_chip *chip,
 int mv88e6352_serdes_get_sset_count(struct mv88e6xxx_chip *chip, int port);
 int mv88e6352_serdes_get_strings(struct mv88e6xxx_chip *chip,
 				 int port, uint8_t *data);
-int mv88e6352_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
-			       uint64_t *data);
+size_t mv88e6352_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
+				  uint64_t *data);
 int mv88e6390_serdes_get_sset_count(struct mv88e6xxx_chip *chip, int port);
 int mv88e6390_serdes_get_strings(struct mv88e6xxx_chip *chip,
 				 int port, uint8_t *data);
-int mv88e6390_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
-			       uint64_t *data);
+size_t mv88e6390_serdes_get_stats(struct mv88e6xxx_chip *chip, int port,
+				  uint64_t *data);
 
 int mv88e6352_serdes_get_regs_len(struct mv88e6xxx_chip *chip, int port);
 void mv88e6352_serdes_get_regs(struct mv88e6xxx_chip *chip, int port, void *_p);
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 net-next 4/8] net: dsa: mv88e6xxx: Give each hw stat an ID
  2023-12-14 13:50 [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support Tobias Waldekranz
                   ` (2 preceding siblings ...)
  2023-12-14 13:50 ` [PATCH v4 net-next 3/8] net: dsa: mv88e6xxx: Fix mv88e6352_serdes_get_stats error path Tobias Waldekranz
@ 2023-12-14 13:50 ` Tobias Waldekranz
  2023-12-14 13:50 ` [PATCH v4 net-next 5/8] net: dsa: mv88e6xxx: Add "eth-mac" counter group support Tobias Waldekranz
                   ` (4 subsequent siblings)
  8 siblings, 0 replies; 11+ messages in thread
From: Tobias Waldekranz @ 2023-12-14 13:50 UTC (permalink / raw)
  To: davem, kuba
  Cc: andrew, f.fainelli, olteanv, netdev, Vladimir Oltean,
	Florian Fainelli

With the upcoming standard counter group support, we are no longer
reading out the whole set of counters, but rather mapping a subset to
the requested group.

Therefore, create an enum with an ID for each stat, such that
mv88e6xxx_hw_stats[] can be subscripted with a human-readable ID
corresponding to the counter's name.

Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 138 +++++++++++++++++--------------
 1 file changed, 75 insertions(+), 63 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 1f41479fd2a1..c1cfe4f72868 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -955,66 +955,78 @@ static int mv88e6xxx_stats_snapshot(struct mv88e6xxx_chip *chip, int port)
 	return err;
 }
 
-static struct mv88e6xxx_hw_stat mv88e6xxx_hw_stats[] = {
-	{ "in_good_octets",		8, 0x00, STATS_TYPE_BANK0, },
-	{ "in_bad_octets",		4, 0x02, STATS_TYPE_BANK0, },
-	{ "in_unicast",			4, 0x04, STATS_TYPE_BANK0, },
-	{ "in_broadcasts",		4, 0x06, STATS_TYPE_BANK0, },
-	{ "in_multicasts",		4, 0x07, STATS_TYPE_BANK0, },
-	{ "in_pause",			4, 0x16, STATS_TYPE_BANK0, },
-	{ "in_undersize",		4, 0x18, STATS_TYPE_BANK0, },
-	{ "in_fragments",		4, 0x19, STATS_TYPE_BANK0, },
-	{ "in_oversize",		4, 0x1a, STATS_TYPE_BANK0, },
-	{ "in_jabber",			4, 0x1b, STATS_TYPE_BANK0, },
-	{ "in_rx_error",		4, 0x1c, STATS_TYPE_BANK0, },
-	{ "in_fcs_error",		4, 0x1d, STATS_TYPE_BANK0, },
-	{ "out_octets",			8, 0x0e, STATS_TYPE_BANK0, },
-	{ "out_unicast",		4, 0x10, STATS_TYPE_BANK0, },
-	{ "out_broadcasts",		4, 0x13, STATS_TYPE_BANK0, },
-	{ "out_multicasts",		4, 0x12, STATS_TYPE_BANK0, },
-	{ "out_pause",			4, 0x15, STATS_TYPE_BANK0, },
-	{ "excessive",			4, 0x11, STATS_TYPE_BANK0, },
-	{ "collisions",			4, 0x1e, STATS_TYPE_BANK0, },
-	{ "deferred",			4, 0x05, STATS_TYPE_BANK0, },
-	{ "single",			4, 0x14, STATS_TYPE_BANK0, },
-	{ "multiple",			4, 0x17, STATS_TYPE_BANK0, },
-	{ "out_fcs_error",		4, 0x03, STATS_TYPE_BANK0, },
-	{ "late",			4, 0x1f, STATS_TYPE_BANK0, },
-	{ "hist_64bytes",		4, 0x08, STATS_TYPE_BANK0, },
-	{ "hist_65_127bytes",		4, 0x09, STATS_TYPE_BANK0, },
-	{ "hist_128_255bytes",		4, 0x0a, STATS_TYPE_BANK0, },
-	{ "hist_256_511bytes",		4, 0x0b, STATS_TYPE_BANK0, },
-	{ "hist_512_1023bytes",		4, 0x0c, STATS_TYPE_BANK0, },
-	{ "hist_1024_max_bytes",	4, 0x0d, STATS_TYPE_BANK0, },
-	{ "sw_in_discards",		4, 0x10, STATS_TYPE_PORT, },
-	{ "sw_in_filtered",		2, 0x12, STATS_TYPE_PORT, },
-	{ "sw_out_filtered",		2, 0x13, STATS_TYPE_PORT, },
-	{ "in_discards",		4, 0x00, STATS_TYPE_BANK1, },
-	{ "in_filtered",		4, 0x01, STATS_TYPE_BANK1, },
-	{ "in_accepted",		4, 0x02, STATS_TYPE_BANK1, },
-	{ "in_bad_accepted",		4, 0x03, STATS_TYPE_BANK1, },
-	{ "in_good_avb_class_a",	4, 0x04, STATS_TYPE_BANK1, },
-	{ "in_good_avb_class_b",	4, 0x05, STATS_TYPE_BANK1, },
-	{ "in_bad_avb_class_a",		4, 0x06, STATS_TYPE_BANK1, },
-	{ "in_bad_avb_class_b",		4, 0x07, STATS_TYPE_BANK1, },
-	{ "tcam_counter_0",		4, 0x08, STATS_TYPE_BANK1, },
-	{ "tcam_counter_1",		4, 0x09, STATS_TYPE_BANK1, },
-	{ "tcam_counter_2",		4, 0x0a, STATS_TYPE_BANK1, },
-	{ "tcam_counter_3",		4, 0x0b, STATS_TYPE_BANK1, },
-	{ "in_da_unknown",		4, 0x0e, STATS_TYPE_BANK1, },
-	{ "in_management",		4, 0x0f, STATS_TYPE_BANK1, },
-	{ "out_queue_0",		4, 0x10, STATS_TYPE_BANK1, },
-	{ "out_queue_1",		4, 0x11, STATS_TYPE_BANK1, },
-	{ "out_queue_2",		4, 0x12, STATS_TYPE_BANK1, },
-	{ "out_queue_3",		4, 0x13, STATS_TYPE_BANK1, },
-	{ "out_queue_4",		4, 0x14, STATS_TYPE_BANK1, },
-	{ "out_queue_5",		4, 0x15, STATS_TYPE_BANK1, },
-	{ "out_queue_6",		4, 0x16, STATS_TYPE_BANK1, },
-	{ "out_queue_7",		4, 0x17, STATS_TYPE_BANK1, },
-	{ "out_cut_through",		4, 0x18, STATS_TYPE_BANK1, },
-	{ "out_octets_a",		4, 0x1a, STATS_TYPE_BANK1, },
-	{ "out_octets_b",		4, 0x1b, STATS_TYPE_BANK1, },
-	{ "out_management",		4, 0x1f, STATS_TYPE_BANK1, },
+#define MV88E6XXX_HW_STAT_MAPPER(_fn)				    \
+	_fn(in_good_octets,		8, 0x00, STATS_TYPE_BANK0), \
+	_fn(in_bad_octets,		4, 0x02, STATS_TYPE_BANK0), \
+	_fn(in_unicast,			4, 0x04, STATS_TYPE_BANK0), \
+	_fn(in_broadcasts,		4, 0x06, STATS_TYPE_BANK0), \
+	_fn(in_multicasts,		4, 0x07, STATS_TYPE_BANK0), \
+	_fn(in_pause,			4, 0x16, STATS_TYPE_BANK0), \
+	_fn(in_undersize,		4, 0x18, STATS_TYPE_BANK0), \
+	_fn(in_fragments,		4, 0x19, STATS_TYPE_BANK0), \
+	_fn(in_oversize,		4, 0x1a, STATS_TYPE_BANK0), \
+	_fn(in_jabber,			4, 0x1b, STATS_TYPE_BANK0), \
+	_fn(in_rx_error,		4, 0x1c, STATS_TYPE_BANK0), \
+	_fn(in_fcs_error,		4, 0x1d, STATS_TYPE_BANK0), \
+	_fn(out_octets,			8, 0x0e, STATS_TYPE_BANK0), \
+	_fn(out_unicast,		4, 0x10, STATS_TYPE_BANK0), \
+	_fn(out_broadcasts,		4, 0x13, STATS_TYPE_BANK0), \
+	_fn(out_multicasts,		4, 0x12, STATS_TYPE_BANK0), \
+	_fn(out_pause,			4, 0x15, STATS_TYPE_BANK0), \
+	_fn(excessive,			4, 0x11, STATS_TYPE_BANK0), \
+	_fn(collisions,			4, 0x1e, STATS_TYPE_BANK0), \
+	_fn(deferred,			4, 0x05, STATS_TYPE_BANK0), \
+	_fn(single,			4, 0x14, STATS_TYPE_BANK0), \
+	_fn(multiple,			4, 0x17, STATS_TYPE_BANK0), \
+	_fn(out_fcs_error,		4, 0x03, STATS_TYPE_BANK0), \
+	_fn(late,			4, 0x1f, STATS_TYPE_BANK0), \
+	_fn(hist_64bytes,		4, 0x08, STATS_TYPE_BANK0), \
+	_fn(hist_65_127bytes,		4, 0x09, STATS_TYPE_BANK0), \
+	_fn(hist_128_255bytes,		4, 0x0a, STATS_TYPE_BANK0), \
+	_fn(hist_256_511bytes,		4, 0x0b, STATS_TYPE_BANK0), \
+	_fn(hist_512_1023bytes,		4, 0x0c, STATS_TYPE_BANK0), \
+	_fn(hist_1024_max_bytes,	4, 0x0d, STATS_TYPE_BANK0), \
+	_fn(sw_in_discards,		4, 0x10, STATS_TYPE_PORT), \
+	_fn(sw_in_filtered,		2, 0x12, STATS_TYPE_PORT), \
+	_fn(sw_out_filtered,		2, 0x13, STATS_TYPE_PORT), \
+	_fn(in_discards,		4, 0x00, STATS_TYPE_BANK1), \
+	_fn(in_filtered,		4, 0x01, STATS_TYPE_BANK1), \
+	_fn(in_accepted,		4, 0x02, STATS_TYPE_BANK1), \
+	_fn(in_bad_accepted,		4, 0x03, STATS_TYPE_BANK1), \
+	_fn(in_good_avb_class_a,	4, 0x04, STATS_TYPE_BANK1), \
+	_fn(in_good_avb_class_b,	4, 0x05, STATS_TYPE_BANK1), \
+	_fn(in_bad_avb_class_a,		4, 0x06, STATS_TYPE_BANK1), \
+	_fn(in_bad_avb_class_b,		4, 0x07, STATS_TYPE_BANK1), \
+	_fn(tcam_counter_0,		4, 0x08, STATS_TYPE_BANK1), \
+	_fn(tcam_counter_1,		4, 0x09, STATS_TYPE_BANK1), \
+	_fn(tcam_counter_2,		4, 0x0a, STATS_TYPE_BANK1), \
+	_fn(tcam_counter_3,		4, 0x0b, STATS_TYPE_BANK1), \
+	_fn(in_da_unknown,		4, 0x0e, STATS_TYPE_BANK1), \
+	_fn(in_management,		4, 0x0f, STATS_TYPE_BANK1), \
+	_fn(out_queue_0,		4, 0x10, STATS_TYPE_BANK1), \
+	_fn(out_queue_1,		4, 0x11, STATS_TYPE_BANK1), \
+	_fn(out_queue_2,		4, 0x12, STATS_TYPE_BANK1), \
+	_fn(out_queue_3,		4, 0x13, STATS_TYPE_BANK1), \
+	_fn(out_queue_4,		4, 0x14, STATS_TYPE_BANK1), \
+	_fn(out_queue_5,		4, 0x15, STATS_TYPE_BANK1), \
+	_fn(out_queue_6,		4, 0x16, STATS_TYPE_BANK1), \
+	_fn(out_queue_7,		4, 0x17, STATS_TYPE_BANK1), \
+	_fn(out_cut_through,		4, 0x18, STATS_TYPE_BANK1), \
+	_fn(out_octets_a,		4, 0x1a, STATS_TYPE_BANK1), \
+	_fn(out_octets_b,		4, 0x1b, STATS_TYPE_BANK1), \
+	_fn(out_management,		4, 0x1f, STATS_TYPE_BANK1), \
+	/*  */
+
+#define MV88E6XXX_HW_STAT_ENTRY(_string, _size, _reg, _type) \
+	{ #_string, _size, _reg, _type }
+static const struct mv88e6xxx_hw_stat mv88e6xxx_hw_stats[] = {
+	MV88E6XXX_HW_STAT_MAPPER(MV88E6XXX_HW_STAT_ENTRY)
+};
+
+#define MV88E6XXX_HW_STAT_ENUM(_string, _size, _reg, _type) \
+	MV88E6XXX_HW_STAT_ID_ ## _string
+enum mv88e6xxx_hw_stat_id {
+	MV88E6XXX_HW_STAT_MAPPER(MV88E6XXX_HW_STAT_ENUM)
 };
 
 static uint64_t _mv88e6xxx_get_ethtool_stat(struct mv88e6xxx_chip *chip,
@@ -1061,7 +1073,7 @@ static uint64_t _mv88e6xxx_get_ethtool_stat(struct mv88e6xxx_chip *chip,
 static int mv88e6xxx_stats_get_strings(struct mv88e6xxx_chip *chip,
 				       uint8_t *data, int types)
 {
-	struct mv88e6xxx_hw_stat *stat;
+	const struct mv88e6xxx_hw_stat *stat;
 	int i, j;
 
 	for (i = 0, j = 0; i < ARRAY_SIZE(mv88e6xxx_hw_stats); i++) {
@@ -1142,7 +1154,7 @@ static void mv88e6xxx_get_strings(struct dsa_switch *ds, int port,
 static int mv88e6xxx_stats_get_sset_count(struct mv88e6xxx_chip *chip,
 					  int types)
 {
-	struct mv88e6xxx_hw_stat *stat;
+	const struct mv88e6xxx_hw_stat *stat;
 	int i, j;
 
 	for (i = 0, j = 0; i < ARRAY_SIZE(mv88e6xxx_hw_stats); i++) {
@@ -1269,7 +1281,7 @@ static size_t mv88e6xxx_stats_get_stat(struct mv88e6xxx_chip *chip, int port,
 static size_t mv88e6xxx_stats_get_stats(struct mv88e6xxx_chip *chip, int port,
 					uint64_t *data)
 {
-	struct mv88e6xxx_hw_stat *stat;
+	const struct mv88e6xxx_hw_stat *stat;
 	size_t i, j;
 
 	for (i = 0, j = 0; i < ARRAY_SIZE(mv88e6xxx_hw_stats); i++) {
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 net-next 5/8] net: dsa: mv88e6xxx: Add "eth-mac" counter group support
  2023-12-14 13:50 [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support Tobias Waldekranz
                   ` (3 preceding siblings ...)
  2023-12-14 13:50 ` [PATCH v4 net-next 4/8] net: dsa: mv88e6xxx: Give each hw stat an ID Tobias Waldekranz
@ 2023-12-14 13:50 ` Tobias Waldekranz
  2023-12-14 13:50 ` [PATCH v4 net-next 6/8] net: dsa: mv88e6xxx: Limit histogram counters to ingress traffic Tobias Waldekranz
                   ` (3 subsequent siblings)
  8 siblings, 0 replies; 11+ messages in thread
From: Tobias Waldekranz @ 2023-12-14 13:50 UTC (permalink / raw)
  To: davem, kuba
  Cc: andrew, f.fainelli, olteanv, netdev, Vladimir Oltean,
	Florian Fainelli

Report the applicable subset of an mv88e6xxx port's counters using
ethtool's standardized "eth-mac" counter group.

Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 39 ++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index c1cfe4f72868..627ed0d8be94 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1331,6 +1331,44 @@ static void mv88e6xxx_get_ethtool_stats(struct dsa_switch *ds, int port,
 	mv88e6xxx_get_stats(chip, port, data);
 }
 
+static void mv88e6xxx_get_eth_mac_stats(struct dsa_switch *ds, int port,
+					struct ethtool_eth_mac_stats *mac_stats)
+{
+	struct mv88e6xxx_chip *chip = ds->priv;
+	int ret;
+
+	ret = mv88e6xxx_stats_snapshot(chip, port);
+	if (ret < 0)
+		return;
+
+#define MV88E6XXX_ETH_MAC_STAT_MAP(_id, _member)			\
+	mv88e6xxx_stats_get_stat(chip, port,				\
+				 &mv88e6xxx_hw_stats[MV88E6XXX_HW_STAT_ID_ ## _id], \
+				 &mac_stats->stats._member)
+
+	MV88E6XXX_ETH_MAC_STAT_MAP(out_unicast, FramesTransmittedOK);
+	MV88E6XXX_ETH_MAC_STAT_MAP(single, SingleCollisionFrames);
+	MV88E6XXX_ETH_MAC_STAT_MAP(multiple, MultipleCollisionFrames);
+	MV88E6XXX_ETH_MAC_STAT_MAP(in_unicast, FramesReceivedOK);
+	MV88E6XXX_ETH_MAC_STAT_MAP(in_fcs_error, FrameCheckSequenceErrors);
+	MV88E6XXX_ETH_MAC_STAT_MAP(out_octets, OctetsTransmittedOK);
+	MV88E6XXX_ETH_MAC_STAT_MAP(deferred, FramesWithDeferredXmissions);
+	MV88E6XXX_ETH_MAC_STAT_MAP(late, LateCollisions);
+	MV88E6XXX_ETH_MAC_STAT_MAP(in_good_octets, OctetsReceivedOK);
+	MV88E6XXX_ETH_MAC_STAT_MAP(out_multicasts, MulticastFramesXmittedOK);
+	MV88E6XXX_ETH_MAC_STAT_MAP(out_broadcasts, BroadcastFramesXmittedOK);
+	MV88E6XXX_ETH_MAC_STAT_MAP(excessive, FramesWithExcessiveDeferral);
+	MV88E6XXX_ETH_MAC_STAT_MAP(in_multicasts, MulticastFramesReceivedOK);
+	MV88E6XXX_ETH_MAC_STAT_MAP(in_broadcasts, BroadcastFramesReceivedOK);
+
+#undef MV88E6XXX_ETH_MAC_STAT_MAP
+
+	mac_stats->stats.FramesTransmittedOK += mac_stats->stats.MulticastFramesXmittedOK;
+	mac_stats->stats.FramesTransmittedOK += mac_stats->stats.BroadcastFramesXmittedOK;
+	mac_stats->stats.FramesReceivedOK += mac_stats->stats.MulticastFramesReceivedOK;
+	mac_stats->stats.FramesReceivedOK += mac_stats->stats.BroadcastFramesReceivedOK;
+}
+
 static int mv88e6xxx_get_regs_len(struct dsa_switch *ds, int port)
 {
 	struct mv88e6xxx_chip *chip = ds->priv;
@@ -6852,6 +6890,7 @@ static const struct dsa_switch_ops mv88e6xxx_switch_ops = {
 	.phylink_mac_link_up	= mv88e6xxx_mac_link_up,
 	.get_strings		= mv88e6xxx_get_strings,
 	.get_ethtool_stats	= mv88e6xxx_get_ethtool_stats,
+	.get_eth_mac_stats	= mv88e6xxx_get_eth_mac_stats,
 	.get_sset_count		= mv88e6xxx_get_sset_count,
 	.port_max_mtu		= mv88e6xxx_get_max_mtu,
 	.port_change_mtu	= mv88e6xxx_change_mtu,
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 net-next 6/8] net: dsa: mv88e6xxx: Limit histogram counters to ingress traffic
  2023-12-14 13:50 [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support Tobias Waldekranz
                   ` (4 preceding siblings ...)
  2023-12-14 13:50 ` [PATCH v4 net-next 5/8] net: dsa: mv88e6xxx: Add "eth-mac" counter group support Tobias Waldekranz
@ 2023-12-14 13:50 ` Tobias Waldekranz
  2023-12-14 13:50 ` [PATCH v4 net-next 7/8] net: dsa: mv88e6xxx: Add "rmon" counter group support Tobias Waldekranz
                   ` (2 subsequent siblings)
  8 siblings, 0 replies; 11+ messages in thread
From: Tobias Waldekranz @ 2023-12-14 13:50 UTC (permalink / raw)
  To: davem, kuba
  Cc: andrew, f.fainelli, olteanv, netdev, Florian Fainelli,
	Vladimir Oltean

Chips in this family only have one set of histogram counters, which
can be used to count ingressing and/or egressing traffic. mv88e6xxx
has, up until this point, kept the hardware default of counting both
directions.

In the mean time, standard counter group support has been added to
ethtool. Via that interface, drivers may report ingress-only and
egress-only histograms separately - but not combined.

In order for mv88e6xxx to maximize amount of diagnostic information
that can be exported via standard interfaces, we opt to limit the
histogram counters to ingress traffic only. Which will allow us to
export them via the standard "rmon" group in an upcoming commit.

The reason for choosing ingress-only over egress-only, is to be
compatible with RFC2819 (RMON MIB).

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
---
 drivers/net/dsa/mv88e6xxx/chip.c    | 6 +++---
 drivers/net/dsa/mv88e6xxx/global1.c | 7 +++----
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 627ed0d8be94..9e365364a34a 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1221,7 +1221,7 @@ static size_t mv88e6095_stats_get_stat(struct mv88e6xxx_chip *chip, int port,
 		return 0;
 
 	*data = _mv88e6xxx_get_ethtool_stat(chip, stat, port, 0,
-					    MV88E6XXX_G1_STATS_OP_HIST_RX_TX);
+					    MV88E6XXX_G1_STATS_OP_HIST_RX);
 	return 1;
 }
 
@@ -1233,7 +1233,7 @@ static size_t mv88e6250_stats_get_stat(struct mv88e6xxx_chip *chip, int port,
 		return 0;
 
 	*data = _mv88e6xxx_get_ethtool_stat(chip, stat, port, 0,
-					    MV88E6XXX_G1_STATS_OP_HIST_RX_TX);
+					    MV88E6XXX_G1_STATS_OP_HIST_RX);
 	return 1;
 }
 
@@ -1246,7 +1246,7 @@ static size_t mv88e6320_stats_get_stat(struct mv88e6xxx_chip *chip, int port,
 
 	*data = _mv88e6xxx_get_ethtool_stat(chip, stat, port,
 					    MV88E6XXX_G1_STATS_OP_BANK_1_BIT_9,
-					    MV88E6XXX_G1_STATS_OP_HIST_RX_TX);
+					    MV88E6XXX_G1_STATS_OP_HIST_RX);
 	return 1;
 }
 
diff --git a/drivers/net/dsa/mv88e6xxx/global1.c b/drivers/net/dsa/mv88e6xxx/global1.c
index 174c773b38c2..49444a72ff09 100644
--- a/drivers/net/dsa/mv88e6xxx/global1.c
+++ b/drivers/net/dsa/mv88e6xxx/global1.c
@@ -462,8 +462,7 @@ int mv88e6390_g1_rmu_disable(struct mv88e6xxx_chip *chip)
 int mv88e6390_g1_stats_set_histogram(struct mv88e6xxx_chip *chip)
 {
 	return mv88e6xxx_g1_ctl2_mask(chip, MV88E6390_G1_CTL2_HIST_MODE_MASK,
-				      MV88E6390_G1_CTL2_HIST_MODE_RX |
-				      MV88E6390_G1_CTL2_HIST_MODE_TX);
+				      MV88E6390_G1_CTL2_HIST_MODE_RX);
 }
 
 int mv88e6xxx_g1_set_device_number(struct mv88e6xxx_chip *chip, int index)
@@ -491,7 +490,7 @@ int mv88e6095_g1_stats_set_histogram(struct mv88e6xxx_chip *chip)
 	if (err)
 		return err;
 
-	val |= MV88E6XXX_G1_STATS_OP_HIST_RX_TX;
+	val |= MV88E6XXX_G1_STATS_OP_HIST_RX;
 
 	err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_STATS_OP, val);
 
@@ -506,7 +505,7 @@ int mv88e6xxx_g1_stats_snapshot(struct mv88e6xxx_chip *chip, int port)
 	err = mv88e6xxx_g1_write(chip, MV88E6XXX_G1_STATS_OP,
 				 MV88E6XXX_G1_STATS_OP_BUSY |
 				 MV88E6XXX_G1_STATS_OP_CAPTURE_PORT |
-				 MV88E6XXX_G1_STATS_OP_HIST_RX_TX | port);
+				 MV88E6XXX_G1_STATS_OP_HIST_RX | port);
 	if (err)
 		return err;
 
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 net-next 7/8] net: dsa: mv88e6xxx: Add "rmon" counter group support
  2023-12-14 13:50 [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support Tobias Waldekranz
                   ` (5 preceding siblings ...)
  2023-12-14 13:50 ` [PATCH v4 net-next 6/8] net: dsa: mv88e6xxx: Limit histogram counters to ingress traffic Tobias Waldekranz
@ 2023-12-14 13:50 ` Tobias Waldekranz
  2023-12-14 13:50 ` [PATCH v4 net-next 8/8] selftests: forwarding: ethtool_rmon: Add histogram counter test Tobias Waldekranz
  2023-12-15 11:10 ` [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support patchwork-bot+netdevbpf
  8 siblings, 0 replies; 11+ messages in thread
From: Tobias Waldekranz @ 2023-12-14 13:50 UTC (permalink / raw)
  To: davem, kuba
  Cc: andrew, f.fainelli, olteanv, netdev, Vladimir Oltean,
	Florian Fainelli

Report the applicable subset of an mv88e6xxx port's counters using
ethtool's standardized "rmon" counter group.

Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 42 ++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 9e365364a34a..383b3c4d6f59 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1369,6 +1369,47 @@ static void mv88e6xxx_get_eth_mac_stats(struct dsa_switch *ds, int port,
 	mac_stats->stats.FramesReceivedOK += mac_stats->stats.BroadcastFramesReceivedOK;
 }
 
+static void mv88e6xxx_get_rmon_stats(struct dsa_switch *ds, int port,
+				     struct ethtool_rmon_stats *rmon_stats,
+				     const struct ethtool_rmon_hist_range **ranges)
+{
+	static const struct ethtool_rmon_hist_range rmon_ranges[] = {
+		{   64,    64 },
+		{   65,   127 },
+		{  128,   255 },
+		{  256,   511 },
+		{  512,  1023 },
+		{ 1024, 65535 },
+		{}
+	};
+	struct mv88e6xxx_chip *chip = ds->priv;
+	int ret;
+
+	ret = mv88e6xxx_stats_snapshot(chip, port);
+	if (ret < 0)
+		return;
+
+#define MV88E6XXX_RMON_STAT_MAP(_id, _member)				\
+	mv88e6xxx_stats_get_stat(chip, port,				\
+				 &mv88e6xxx_hw_stats[MV88E6XXX_HW_STAT_ID_ ## _id], \
+				 &rmon_stats->stats._member)
+
+	MV88E6XXX_RMON_STAT_MAP(in_undersize, undersize_pkts);
+	MV88E6XXX_RMON_STAT_MAP(in_oversize, oversize_pkts);
+	MV88E6XXX_RMON_STAT_MAP(in_fragments, fragments);
+	MV88E6XXX_RMON_STAT_MAP(in_jabber, jabbers);
+	MV88E6XXX_RMON_STAT_MAP(hist_64bytes, hist[0]);
+	MV88E6XXX_RMON_STAT_MAP(hist_65_127bytes, hist[1]);
+	MV88E6XXX_RMON_STAT_MAP(hist_128_255bytes, hist[2]);
+	MV88E6XXX_RMON_STAT_MAP(hist_256_511bytes, hist[3]);
+	MV88E6XXX_RMON_STAT_MAP(hist_512_1023bytes, hist[4]);
+	MV88E6XXX_RMON_STAT_MAP(hist_1024_max_bytes, hist[5]);
+
+#undef MV88E6XXX_RMON_STAT_MAP
+
+	*ranges = rmon_ranges;
+}
+
 static int mv88e6xxx_get_regs_len(struct dsa_switch *ds, int port)
 {
 	struct mv88e6xxx_chip *chip = ds->priv;
@@ -6891,6 +6932,7 @@ static const struct dsa_switch_ops mv88e6xxx_switch_ops = {
 	.get_strings		= mv88e6xxx_get_strings,
 	.get_ethtool_stats	= mv88e6xxx_get_ethtool_stats,
 	.get_eth_mac_stats	= mv88e6xxx_get_eth_mac_stats,
+	.get_rmon_stats		= mv88e6xxx_get_rmon_stats,
 	.get_sset_count		= mv88e6xxx_get_sset_count,
 	.port_max_mtu		= mv88e6xxx_get_max_mtu,
 	.port_change_mtu	= mv88e6xxx_change_mtu,
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH v4 net-next 8/8] selftests: forwarding: ethtool_rmon: Add histogram counter test
  2023-12-14 13:50 [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support Tobias Waldekranz
                   ` (6 preceding siblings ...)
  2023-12-14 13:50 ` [PATCH v4 net-next 7/8] net: dsa: mv88e6xxx: Add "rmon" counter group support Tobias Waldekranz
@ 2023-12-14 13:50 ` Tobias Waldekranz
  2023-12-14 14:12   ` Vladimir Oltean
  2023-12-15 11:10 ` [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support patchwork-bot+netdevbpf
  8 siblings, 1 reply; 11+ messages in thread
From: Tobias Waldekranz @ 2023-12-14 13:50 UTC (permalink / raw)
  To: davem, kuba; +Cc: andrew, f.fainelli, olteanv, netdev

Validate the operation of rx and tx histogram counters, if supported
by the interface, by sending batches of packets targeted for each
bucket.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
---
 .../testing/selftests/net/forwarding/Makefile |   1 +
 .../selftests/net/forwarding/ethtool_rmon.sh  | 143 ++++++++++++++++++
 tools/testing/selftests/net/forwarding/lib.sh |   9 ++
 3 files changed, 153 insertions(+)
 create mode 100755 tools/testing/selftests/net/forwarding/ethtool_rmon.sh

diff --git a/tools/testing/selftests/net/forwarding/Makefile b/tools/testing/selftests/net/forwarding/Makefile
index df593b7b3e6b..452693514be4 100644
--- a/tools/testing/selftests/net/forwarding/Makefile
+++ b/tools/testing/selftests/net/forwarding/Makefile
@@ -17,6 +17,7 @@ TEST_PROGS = bridge_fdb_learning_limit.sh \
 	dual_vxlan_bridge.sh \
 	ethtool_extended_state.sh \
 	ethtool_mm.sh \
+	ethtool_rmon.sh \
 	ethtool.sh \
 	gre_custom_multipath_hash.sh \
 	gre_inner_v4_multipath.sh \
diff --git a/tools/testing/selftests/net/forwarding/ethtool_rmon.sh b/tools/testing/selftests/net/forwarding/ethtool_rmon.sh
new file mode 100755
index 000000000000..41a34a61f763
--- /dev/null
+++ b/tools/testing/selftests/net/forwarding/ethtool_rmon.sh
@@ -0,0 +1,143 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+ALL_TESTS="
+	rmon_rx_histogram
+	rmon_tx_histogram
+"
+
+NUM_NETIFS=2
+source lib.sh
+
+ETH_FCS_LEN=4
+ETH_HLEN=$((6+6+2))
+
+declare -A netif_mtu
+
+ensure_mtu()
+{
+	local iface=$1; shift
+	local len=$1; shift
+	local current=$(ip -j link show dev $iface | jq -r '.[0].mtu')
+	local required=$((len - ETH_HLEN - ETH_FCS_LEN))
+
+	if [ $current -lt $required ]; then
+		ip link set dev $iface mtu $required || return 1
+	fi
+}
+
+bucket_test()
+{
+	local iface=$1; shift
+	local neigh=$1; shift
+	local set=$1; shift
+	local bucket=$1; shift
+	local len=$1; shift
+	local num_rx=10000
+	local num_tx=20000
+	local expected=
+	local before=
+	local after=
+	local delta=
+
+	# Mausezahn does not include FCS bytes in its length - but the
+	# histogram counters do
+	len=$((len - ETH_FCS_LEN))
+
+	before=$(ethtool --json -S $iface --groups rmon | \
+		jq -r ".[0].rmon[\"${set}-pktsNtoM\"][$bucket].val")
+
+	# Send 10k one way and 20k in the other, to detect counters
+	# mapped to the wrong direction
+	$MZ $neigh -q -c $num_rx -p $len -a own -b bcast -d 10us
+	$MZ $iface -q -c $num_tx -p $len -a own -b bcast -d 10us
+
+	after=$(ethtool --json -S $iface --groups rmon | \
+		jq -r ".[0].rmon[\"${set}-pktsNtoM\"][$bucket].val")
+
+	delta=$((after - before))
+
+	expected=$([ $set = rx ] && echo $num_rx || echo $num_tx)
+
+	# Allow some extra tolerance for other packets sent by the stack
+	[ $delta -ge $expected ] && [ $delta -le $((expected + 100)) ]
+}
+
+rmon_histogram()
+{
+	local iface=$1; shift
+	local neigh=$1; shift
+	local set=$1; shift
+	local nbuckets=0
+	local step=
+
+	RET=0
+
+	while read -r -a bucket; do
+		step="$set-pkts${bucket[0]}to${bucket[1]} on $iface"
+
+		for if in $iface $neigh; do
+			if ! ensure_mtu $if ${bucket[0]}; then
+				log_test_skip "$if does not support the required MTU for $step"
+				return
+			fi
+		done
+
+		if ! bucket_test $iface $neigh $set $nbuckets ${bucket[0]}; then
+			check_err 1 "$step failed"
+			return 1
+		fi
+		log_test "$step"
+		nbuckets=$((nbuckets + 1))
+	done < <(ethtool --json -S $iface --groups rmon | \
+		jq -r ".[0].rmon[\"${set}-pktsNtoM\"][]|[.low, .high]|@tsv" 2>/dev/null)
+
+	if [ $nbuckets -eq 0 ]; then
+		log_test_skip "$iface does not support $set histogram counters"
+		return
+	fi
+}
+
+rmon_rx_histogram()
+{
+	rmon_histogram $h1 $h2 rx
+	rmon_histogram $h2 $h1 rx
+}
+
+rmon_tx_histogram()
+{
+	rmon_histogram $h1 $h2 tx
+	rmon_histogram $h2 $h1 tx
+}
+
+setup_prepare()
+{
+	h1=${NETIFS[p1]}
+	h2=${NETIFS[p2]}
+
+	for iface in $h1 $h2; do
+		netif_mtu[$iface]=$(ip -j link show dev $iface | jq -r '.[0].mtu')
+		ip link set dev $iface up
+	done
+}
+
+cleanup()
+{
+	pre_cleanup
+
+	for iface in $h2 $h1; do
+		ip link set dev $iface \
+			mtu ${netif_mtu[$iface]} \
+			down
+	done
+}
+
+check_ethtool_counter_group_support
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+
+tests_run
+
+exit $EXIT_STATUS
diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index 8f6ca458af9a..e3740163c384 100755
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -146,6 +146,15 @@ check_ethtool_mm_support()
 	fi
 }
 
+check_ethtool_counter_group_support()
+{
+	ethtool --help 2>&1| grep -- '--all-groups' &> /dev/null
+	if [[ $? -ne 0 ]]; then
+		echo "SKIP: ethtool too old; it is missing standard counter group support"
+		exit $ksft_skip
+	fi
+}
+
 check_locked_port_support()
 {
 	if ! bridge -d link show | grep -q " locked"; then
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* Re: [PATCH v4 net-next 8/8] selftests: forwarding: ethtool_rmon: Add histogram counter test
  2023-12-14 13:50 ` [PATCH v4 net-next 8/8] selftests: forwarding: ethtool_rmon: Add histogram counter test Tobias Waldekranz
@ 2023-12-14 14:12   ` Vladimir Oltean
  0 siblings, 0 replies; 11+ messages in thread
From: Vladimir Oltean @ 2023-12-14 14:12 UTC (permalink / raw)
  To: Tobias Waldekranz; +Cc: davem, kuba, andrew, f.fainelli, netdev

On Thu, Dec 14, 2023 at 02:50:29PM +0100, Tobias Waldekranz wrote:
> Validate the operation of rx and tx histogram counters, if supported
> by the interface, by sending batches of packets targeted for each
> bucket.
> 
> Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
> ---

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

# enetc + ocelot
./ethtool_rmon.sh eno0 swp0
TEST: rx-pkts64to64 on eno0                                         [ OK ]
TEST: rx-pkts65to127 on eno0                                        [ OK ]
TEST: rx-pkts128to255 on eno0                                       [ OK ]
TEST: rx-pkts256to511 on eno0                                       [ OK ]
TEST: rx-pkts512to1023 on eno0                                      [ OK ]
TEST: rx-pkts1024to1522 on eno0                                     [ OK ]
TEST: rx-pkts1523to9600 on eno0                                     [ OK ]
TEST: rx-pkts64to64 on swp0                                         [ OK ]
TEST: rx-pkts65to127 on swp0                                        [ OK ]
TEST: rx-pkts128to255 on swp0                                       [ OK ]
TEST: rx-pkts256to511 on swp0                                       [ OK ]
TEST: rx-pkts512to1023 on swp0                                      [ OK ]
TEST: rx-pkts1024to1526 on swp0                                     [ OK ]
TEST: rx-pkts1527to65535 on swp0                                    [ OK ]
TEST: tx-pkts64to64 on eno0                                         [ OK ]
TEST: tx-pkts65to127 on eno0                                        [ OK ]
TEST: tx-pkts128to255 on eno0                                       [ OK ]
TEST: tx-pkts256to511 on eno0                                       [ OK ]
TEST: tx-pkts512to1023 on eno0                                      [ OK ]
TEST: tx-pkts1024to1522 on eno0                                     [ OK ]
TEST: tx-pkts1523to9600 on eno0                                     [ OK ]
TEST: tx-pkts64to64 on swp0                                         [ OK ]
TEST: tx-pkts65to127 on swp0                                        [ OK ]
TEST: tx-pkts128to255 on swp0                                       [ OK ]
TEST: tx-pkts256to511 on swp0                                       [ OK ]
TEST: tx-pkts512to1023 on swp0                                      [ OK ]
TEST: tx-pkts1024to1526 on swp0                                     [ OK ]
TEST: tx-pkts1527to65535 on swp0                                    [ OK ]

# mv88e6xxx
./ethtool_rmon.sh lan1 lan2
TEST: rx-pkts64to64 on lan1                                         [ OK ]
TEST: rx-pkts65to127 on lan1                                        [ OK ]
TEST: rx-pkts128to255 on lan1                                       [ OK ]
TEST: rx-pkts256to511 on lan1                                       [ OK ]
TEST: rx-pkts512to1023 on lan1                                      [ OK ]
TEST: rx-pkts1024to65535 on lan1                                    [ OK ]
TEST: rx-pkts64to64 on lan2                                         [ OK ]
TEST: rx-pkts65to127 on lan2                                        [ OK ]
TEST: rx-pkts128to255 on lan2                                       [ OK ]
TEST: rx-pkts256to511 on lan2                                       [ OK ]
TEST: rx-pkts512to1023 on lan2                                      [ OK ]
TEST: rx-pkts1024to65535 on lan2                                    [ OK ]
TEST: lan1 does not support tx histogram counters                   [SKIP]
TEST: lan2 does not support tx histogram counters                   [SKIP]

This is just lovely, thanks for the work, Tobias.

Just one nitpick below.

> +rmon_histogram()
> +{
> +	local iface=$1; shift
> +	local neigh=$1; shift
> +	local set=$1; shift
> +	local nbuckets=0
> +	local step=
> +
> +	RET=0
> +
> +	while read -r -a bucket; do
> +		step="$set-pkts${bucket[0]}to${bucket[1]} on $iface"
> +
> +		for if in $iface $neigh; do

My syntax highlighting in vim gets confused by the fact that you name a
variable "if". I guess something like "netif" would do the trick. But
bash doesn't seem to be confused. I can send a patch renaming this after
it gets merged. There's no reason to resend - it's not a functional
change.

> +			if ! ensure_mtu $if ${bucket[0]}; then
> +				log_test_skip "$if does not support the required MTU for $step"
> +				return
> +			fi
> +		done
> +
> +		if ! bucket_test $iface $neigh $set $nbuckets ${bucket[0]}; then
> +			check_err 1 "$step failed"
> +			return 1
> +		fi
> +		log_test "$step"
> +		nbuckets=$((nbuckets + 1))
> +	done < <(ethtool --json -S $iface --groups rmon | \
> +		jq -r ".[0].rmon[\"${set}-pktsNtoM\"][]|[.low, .high]|@tsv" 2>/dev/null)

^ permalink raw reply	[flat|nested] 11+ messages in thread
* Re: [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support
  2023-12-14 13:50 [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support Tobias Waldekranz
                   ` (7 preceding siblings ...)
  2023-12-14 13:50 ` [PATCH v4 net-next 8/8] selftests: forwarding: ethtool_rmon: Add histogram counter test Tobias Waldekranz
@ 2023-12-15 11:10 ` patchwork-bot+netdevbpf
  8 siblings, 0 replies; 11+ messages in thread
From: patchwork-bot+netdevbpf @ 2023-12-15 11:10 UTC (permalink / raw)
  To: Tobias Waldekranz; +Cc: davem, kuba, andrew, f.fainelli, olteanv, netdev

Hello:

This series was applied to netdev/net-next.git (main)
by David S. Miller <davem@davemloft.net>:

On Thu, 14 Dec 2023 14:50:21 +0100 you wrote:
> The majority of the changes (2/8) are about refactoring the existing
> ethtool statistics support to make it possible to read individual
> counters, rather than the whole set.
> 
> 4/8 tries to collect all information about a stat in a single place
> using a mapper macro, which is then used to generate the original list
> of stats, along with a matching enum. checkpatch is less than amused
> with this construct, but prior art exists (__BPF_FUNC_MAPPER in
> include/uapi/linux/bpf.h, for example).
> 
> [...]

Here is the summary with links:
  - [v4,net-next,1/8] net: dsa: mv88e6xxx: Push locking into stats snapshotting
    https://git.kernel.org/netdev/net-next/c/d624afaf4c79
  - [v4,net-next,2/8] net: dsa: mv88e6xxx: Create API to read a single stat counter
    https://git.kernel.org/netdev/net-next/c/3def80e52db3
  - [v4,net-next,3/8] net: dsa: mv88e6xxx: Fix mv88e6352_serdes_get_stats error path
    https://git.kernel.org/netdev/net-next/c/fc82a08ae795
  - [v4,net-next,4/8] net: dsa: mv88e6xxx: Give each hw stat an ID
    https://git.kernel.org/netdev/net-next/c/5780acbd2499
  - [v4,net-next,5/8] net: dsa: mv88e6xxx: Add "eth-mac" counter group support
    https://git.kernel.org/netdev/net-next/c/0e047cec7796
  - [v4,net-next,6/8] net: dsa: mv88e6xxx: Limit histogram counters to ingress traffic
    https://git.kernel.org/netdev/net-next/c/ceea48efa358
  - [v4,net-next,7/8] net: dsa: mv88e6xxx: Add "rmon" counter group support
    https://git.kernel.org/netdev/net-next/c/394518e3c119
  - [v4,net-next,8/8] selftests: forwarding: ethtool_rmon: Add histogram counter test
    https://git.kernel.org/netdev/net-next/c/00e7f29d9b89

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html



^ permalink raw reply	[flat|nested] 11+ messages in thread
end of thread, other threads:[~2023-12-15 11:10 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-12-14 13:50 [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support Tobias Waldekranz
2023-12-14 13:50 ` [PATCH v4 net-next 1/8] net: dsa: mv88e6xxx: Push locking into stats snapshotting Tobias Waldekranz
2023-12-14 13:50 ` [PATCH v4 net-next 2/8] net: dsa: mv88e6xxx: Create API to read a single stat counter Tobias Waldekranz
2023-12-14 13:50 ` [PATCH v4 net-next 3/8] net: dsa: mv88e6xxx: Fix mv88e6352_serdes_get_stats error path Tobias Waldekranz
2023-12-14 13:50 ` [PATCH v4 net-next 4/8] net: dsa: mv88e6xxx: Give each hw stat an ID Tobias Waldekranz
2023-12-14 13:50 ` [PATCH v4 net-next 5/8] net: dsa: mv88e6xxx: Add "eth-mac" counter group support Tobias Waldekranz
2023-12-14 13:50 ` [PATCH v4 net-next 6/8] net: dsa: mv88e6xxx: Limit histogram counters to ingress traffic Tobias Waldekranz
2023-12-14 13:50 ` [PATCH v4 net-next 7/8] net: dsa: mv88e6xxx: Add "rmon" counter group support Tobias Waldekranz
2023-12-14 13:50 ` [PATCH v4 net-next 8/8] selftests: forwarding: ethtool_rmon: Add histogram counter test Tobias Waldekranz
2023-12-14 14:12   ` Vladimir Oltean
2023-12-15 11:10 ` [PATCH v4 net-next 0/8] net: dsa: mv88e6xxx: Add "eth-mac" and "rmon" counter group support patchwork-bot+netdevbpf

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