Merge branch 'mlxsw-Expose-transceiver-overheat-counter'

Ido Schimmel says:

====================
mlxsw: Expose transceiver overheat counter

Amit says:

An overheated transceiver can be the root cause of various network
problems such as link flapping. Counting the number of times a
transceiver's temperature was higher than its configured threshold can
therefore help in debugging such issues.

This patch set exposes a transceiver overheat counter via ethtool. This
is achieved by configuring the Spectrum ASIC to generate events whenever
a transceiver is overheated. The temperature thresholds are queried from
the transceiver (if available) and set to the default otherwise.

Example:

...
transceiver_overheat: 2

Patch set overview:

Patches #1-#3 add required device registers
Patches #4-#5 add required infrastructure in mlxsw to configure and
count overheat events
Patches #6-#9 gradually add support for the transceiver overheat counter
Patch #10 exposes the transceiver overheat counter via ethtool
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/core.c

@@ -26,6 +26,7 @@
 #include <trace/events/devlink.h>
 
 #include "core.h"
+#include "core_env.h"
 #include "item.h"
 #include "cmd.h"
 #include "port.h"
@@ -87,6 +88,8 @@ struct mlxsw_core {
 	struct {
 		struct devlink_health_reporter *fw_fatal;
 	} health;
+	struct mlxsw_env *env;
+	bool is_initialized; /* Denotes if core was already initialized. */
 	unsigned long driver_priv[];
 	/* driver_priv has to be always the last item */
 };
@@ -133,6 +136,11 @@ bool mlxsw_core_res_query_enabled(const struct mlxsw_core *mlxsw_core)
 }
 EXPORT_SYMBOL(mlxsw_core_res_query_enabled);
 
+bool mlxsw_core_temp_warn_enabled(const struct mlxsw_core *mlxsw_core)
+{
+	return mlxsw_core->driver->temp_warn_enabled;
+}
+
 bool
 mlxsw_core_fw_rev_minor_subminor_validate(const struct mlxsw_fw_rev *rev,
 					  const struct mlxsw_fw_rev *req_rev)
@@ -1943,6 +1951,11 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
 	if (err)
 		goto err_thermal_init;
 
+	err = mlxsw_env_init(mlxsw_core, &mlxsw_core->env);
+	if (err)
+		goto err_env_init;
+
+	mlxsw_core->is_initialized = true;
 	devlink_params_publish(devlink);
 
 	if (!reload)
@@ -1950,6 +1963,8 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info,
 
 	return 0;
 
+err_env_init:
+	mlxsw_thermal_fini(mlxsw_core->thermal);
 err_thermal_init:
 	mlxsw_hwmon_fini(mlxsw_core->hwmon);
 err_hwmon_init:
@@ -2026,6 +2041,8 @@ void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core,
 	}
 
 	devlink_params_unpublish(devlink);
+	mlxsw_core->is_initialized = false;
+	mlxsw_env_fini(mlxsw_core->env);
 	mlxsw_thermal_fini(mlxsw_core->thermal);
 	mlxsw_hwmon_fini(mlxsw_core->hwmon);
 	if (mlxsw_core->driver->fini)
@@ -2829,6 +2846,16 @@ mlxsw_core_port_devlink_port_get(struct mlxsw_core *mlxsw_core,
 }
 EXPORT_SYMBOL(mlxsw_core_port_devlink_port_get);
 
+struct mlxsw_env *mlxsw_core_env(const struct mlxsw_core *mlxsw_core)
+{
+	return mlxsw_core->env;
+}
+
+bool mlxsw_core_is_initialized(const struct mlxsw_core *mlxsw_core)
+{
+	return mlxsw_core->is_initialized;
+}
+
 int mlxsw_core_module_max_width(struct mlxsw_core *mlxsw_core, u8 module)
 {
 	enum mlxsw_reg_pmtm_module_type module_type;

drivers/net/ethernet/mellanox/mlxsw/core.h

@@ -32,6 +32,8 @@ void *mlxsw_core_driver_priv(struct mlxsw_core *mlxsw_core);
 
 bool mlxsw_core_res_query_enabled(const struct mlxsw_core *mlxsw_core);
 
+bool mlxsw_core_temp_warn_enabled(const struct mlxsw_core *mlxsw_core);
+
 bool
 mlxsw_core_fw_rev_minor_subminor_validate(const struct mlxsw_fw_rev *rev,
 					  const struct mlxsw_fw_rev *req_rev);
@@ -221,6 +223,8 @@ enum devlink_port_type mlxsw_core_port_type_get(struct mlxsw_core *mlxsw_core,
 struct devlink_port *
 mlxsw_core_port_devlink_port_get(struct mlxsw_core *mlxsw_core,
 				 u8 local_port);
+struct mlxsw_env *mlxsw_core_env(const struct mlxsw_core *mlxsw_core);
+bool mlxsw_core_is_initialized(const struct mlxsw_core *mlxsw_core);
 int mlxsw_core_module_max_width(struct mlxsw_core *mlxsw_core, u8 module);
 
 int mlxsw_core_schedule_dw(struct delayed_work *dwork, unsigned long delay);
@@ -371,6 +375,7 @@ struct mlxsw_driver {
 	const struct mlxsw_config_profile *profile;
 	bool res_query_enabled;
 	bool fw_fatal_enabled;
+	bool temp_warn_enabled;
 };
 
 int mlxsw_core_kvd_sizes_get(struct mlxsw_core *mlxsw_core,

drivers/net/ethernet/mellanox/mlxsw/core_env.h

@@ -14,4 +14,10 @@ int mlxsw_env_get_module_eeprom(struct net_device *netdev,
 				struct mlxsw_core *mlxsw_core, int module,
 				struct ethtool_eeprom *ee, u8 *data);
 
+int
+mlxsw_env_module_overheat_counter_get(struct mlxsw_core *mlxsw_core, u8 module,
+				      u64 *p_counter);
+int mlxsw_env_init(struct mlxsw_core *core, struct mlxsw_env **p_env);
+void mlxsw_env_fini(struct mlxsw_env *env);
+
 #endif

drivers/net/ethernet/mellanox/mlxsw/core_hwmon.c

@@ -106,7 +106,7 @@ static ssize_t mlxsw_hwmon_temp_rst_store(struct device *dev,
 	struct mlxsw_hwmon_attr *mlwsw_hwmon_attr =
 			container_of(attr, struct mlxsw_hwmon_attr, dev_attr);
 	struct mlxsw_hwmon *mlxsw_hwmon = mlwsw_hwmon_attr->hwmon;
-	char mtmp_pl[MLXSW_REG_MTMP_LEN];
+	char mtmp_pl[MLXSW_REG_MTMP_LEN] = {0};
 	unsigned long val;
 	int index;
 	int err;
@@ -119,7 +119,13 @@ static ssize_t mlxsw_hwmon_temp_rst_store(struct device *dev,
 
 	index = mlxsw_hwmon_get_attr_index(mlwsw_hwmon_attr->type_index,
 					   mlxsw_hwmon->module_sensor_max);
-	mlxsw_reg_mtmp_pack(mtmp_pl, index, true, true);
+
+	mlxsw_reg_mtmp_sensor_index_set(mtmp_pl, index);
+	err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl);
+	if (err)
+		return err;
+	mlxsw_reg_mtmp_mte_set(mtmp_pl, true);
+	mlxsw_reg_mtmp_mtr_set(mtmp_pl, true);
 	err = mlxsw_reg_write(mlxsw_hwmon->core, MLXSW_REG(mtmp), mtmp_pl);
 	if (err) {
 		dev_err(mlxsw_hwmon->bus_info->dev, "Failed to reset temp sensor history\n");
@@ -570,7 +576,6 @@ static void mlxsw_hwmon_attr_add(struct mlxsw_hwmon *mlxsw_hwmon,
 static int mlxsw_hwmon_temp_init(struct mlxsw_hwmon *mlxsw_hwmon)
 {
 	char mtcap_pl[MLXSW_REG_MTCAP_LEN] = {0};
-	char mtmp_pl[MLXSW_REG_MTMP_LEN];
 	int i;
 	int err;
 
@@ -581,7 +586,15 @@ static int mlxsw_hwmon_temp_init(struct mlxsw_hwmon *mlxsw_hwmon)
 	}
 	mlxsw_hwmon->sensor_count = mlxsw_reg_mtcap_sensor_count_get(mtcap_pl);
 	for (i = 0; i < mlxsw_hwmon->sensor_count; i++) {
-		mlxsw_reg_mtmp_pack(mtmp_pl, i, true, true);
+		char mtmp_pl[MLXSW_REG_MTMP_LEN] = {0};
+
+		mlxsw_reg_mtmp_sensor_index_set(mtmp_pl, i);
+		err = mlxsw_reg_query(mlxsw_hwmon->core, MLXSW_REG(mtmp),
+				      mtmp_pl);
+		if (err)
+			return err;
+		mlxsw_reg_mtmp_mte_set(mtmp_pl, true);
+		mlxsw_reg_mtmp_mtr_set(mtmp_pl, true);
 		err = mlxsw_reg_write(mlxsw_hwmon->core,
 				      MLXSW_REG(mtmp), mtmp_pl);
 		if (err) {

drivers/net/ethernet/mellanox/mlxsw/reg.h

@@ -5405,6 +5405,64 @@ static inline void mlxsw_reg_pspa_pack(char *payload, u8 swid, u8 local_port)
 	mlxsw_reg_pspa_sub_port_set(payload, 0);
 }
 
+/* PMAOS - Ports Module Administrative and Operational Status
+ * ----------------------------------------------------------
+ * This register configures and retrieves the per module status.
+ */
+#define MLXSW_REG_PMAOS_ID 0x5012
+#define MLXSW_REG_PMAOS_LEN 0x10
+
+MLXSW_REG_DEFINE(pmaos, MLXSW_REG_PMAOS_ID, MLXSW_REG_PMAOS_LEN);
+
+/* reg_slot_index
+ * Slot index.
+ * Access: Index
+ */
+MLXSW_ITEM32(reg, pmaos, slot_index, 0x00, 24, 4);
+
+/* reg_pmaos_module
+ * Module number.
+ * Access: Index
+ */
+MLXSW_ITEM32(reg, pmaos, module, 0x00, 16, 8);
+
+/* reg_pmaos_ase
+ * Admin state update enable.
+ * If this bit is set, admin state will be updated based on admin_state field.
+ * Only relevant on Set() operations.
+ * Access: WO
+ */
+MLXSW_ITEM32(reg, pmaos, ase, 0x04, 31, 1);
+
+/* reg_pmaos_ee
+ * Event update enable.
+ * If this bit is set, event generation will be updated based on the e field.
+ * Only relevant on Set operations.
+ * Access: WO
+ */
+MLXSW_ITEM32(reg, pmaos, ee, 0x04, 30, 1);
+
+enum mlxsw_reg_pmaos_e {
+	MLXSW_REG_PMAOS_E_DO_NOT_GENERATE_EVENT,
+	MLXSW_REG_PMAOS_E_GENERATE_EVENT,
+	MLXSW_REG_PMAOS_E_GENERATE_SINGLE_EVENT,
+};
+
+/* reg_pmaos_e
+ * Event Generation on operational state change.
+ * Access: RW
+ */
+MLXSW_ITEM32(reg, pmaos, e, 0x04, 0, 2);
+
+static inline void mlxsw_reg_pmaos_pack(char *payload, u8 module,
+					enum mlxsw_reg_pmaos_e e)
+{
+	MLXSW_REG_ZERO(pmaos, payload);
+	mlxsw_reg_pmaos_module_set(payload, module);
+	mlxsw_reg_pmaos_e_set(payload, e);
+	mlxsw_reg_pmaos_ee_set(payload, true);
+}
+
 /* PPLR - Port Physical Loopback Register
  * --------------------------------------
  * This register allows configuration of the port's loopback mode.
@@ -5441,6 +5499,50 @@ static inline void mlxsw_reg_pplr_pack(char *payload, u8 local_port,
 				 MLXSW_REG_PPLR_LB_TYPE_BIT_PHY_LOCAL : 0);
 }
 
+/* PMPE - Port Module Plug/Unplug Event Register
+ * ---------------------------------------------
+ * This register reports any operational status change of a module.
+ * A change in the module’s state will generate an event only if the change
+ * happens after arming the event mechanism. Any changes to the module state
+ * while the event mechanism is not armed will not be reported. Software can
+ * query the PMPE register for module status.
+ */
+#define MLXSW_REG_PMPE_ID 0x5024
+#define MLXSW_REG_PMPE_LEN 0x10
+
+MLXSW_REG_DEFINE(pmpe, MLXSW_REG_PMPE_ID, MLXSW_REG_PMPE_LEN);
+
+/* reg_pmpe_slot_index
+ * Slot index.
+ * Access: Index
+ */
+MLXSW_ITEM32(reg, pmpe, slot_index, 0x00, 24, 4);
+
+/* reg_pmpe_module
+ * Module number.
+ * Access: Index
+ */
+MLXSW_ITEM32(reg, pmpe, module, 0x00, 16, 8);
+
+enum mlxsw_reg_pmpe_module_status {
+	MLXSW_REG_PMPE_MODULE_STATUS_PLUGGED_ENABLED = 1,
+	MLXSW_REG_PMPE_MODULE_STATUS_UNPLUGGED,
+	MLXSW_REG_PMPE_MODULE_STATUS_PLUGGED_ERROR,
+	MLXSW_REG_PMPE_MODULE_STATUS_PLUGGED_DISABLED,
+};
+
+/* reg_pmpe_module_status
+ * Module status.
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, pmpe, module_status, 0x00, 0, 4);
+
+/* reg_pmpe_error_type
+ * Module error details.
+ * Access: RO
+ */
+MLXSW_ITEM32(reg, pmpe, error_type, 0x04, 8, 4);
+
 /* PDDR - Port Diagnostics Database Register
  * -----------------------------------------
  * The PDDR enables to read the Phy debug database
@@ -5580,6 +5682,8 @@ MLXSW_ITEM32(reg, htgt, type, 0x00, 8, 4);
 enum mlxsw_reg_htgt_trap_group {
 	MLXSW_REG_HTGT_TRAP_GROUP_EMAD,
 	MLXSW_REG_HTGT_TRAP_GROUP_MFDE,
+	MLXSW_REG_HTGT_TRAP_GROUP_MTWE,
+	MLXSW_REG_HTGT_TRAP_GROUP_PMPE,
 	MLXSW_REG_HTGT_TRAP_GROUP_SP_STP,
 	MLXSW_REG_HTGT_TRAP_GROUP_SP_LACP,
 	MLXSW_REG_HTGT_TRAP_GROUP_SP_LLDP,
@@ -8413,6 +8517,13 @@ MLXSW_ITEM32(reg, mtmp, max_temperature, 0x08, 0, 16);
  * 2 - Generate single event
  * Access: RW
  */
+
+enum mlxsw_reg_mtmp_tee {
+	MLXSW_REG_MTMP_TEE_NO_EVENT,
+	MLXSW_REG_MTMP_TEE_GENERATE_EVENT,
+	MLXSW_REG_MTMP_TEE_GENERATE_SINGLE_EVENT,
+};
+
 MLXSW_ITEM32(reg, mtmp, tee, 0x0C, 30, 2);
 
 #define MLXSW_REG_MTMP_THRESH_HI 0x348	/* 105 Celsius */
@@ -8423,6 +8534,7 @@ MLXSW_ITEM32(reg, mtmp, tee, 0x0C, 30, 2);
  */
 MLXSW_ITEM32(reg, mtmp, temperature_threshold_hi, 0x0C, 0, 16);
 
+#define MLXSW_REG_MTMP_HYSTERESIS_TEMP 0x28 /* 5 Celsius */
 /* reg_mtmp_temperature_threshold_lo
  * Low threshold for Temperature Warning Event. In 0.125 Celsius.
  * Access: RW
@@ -8466,6 +8578,23 @@ static inline void mlxsw_reg_mtmp_unpack(char *payload, int *p_temp,
 		mlxsw_reg_mtmp_sensor_name_memcpy_from(payload, sensor_name);
 }
 
+/* MTWE - Management Temperature Warning Event
+ * -------------------------------------------
+ * This register is used for over temperature warning.
+ */
+#define MLXSW_REG_MTWE_ID 0x900B
+#define MLXSW_REG_MTWE_LEN 0x10
+
+MLXSW_REG_DEFINE(mtwe, MLXSW_REG_MTWE_ID, MLXSW_REG_MTWE_LEN);
+
+/* reg_mtwe_sensor_warning
+ * Bit vector indicating which of the sensor reading is above threshold.
+ * Address 00h bit31 is sensor_warning[127].
+ * Address 0Ch bit0 is sensor_warning[0].
+ * Access: RO
+ */
+MLXSW_ITEM_BIT_ARRAY(reg, mtwe, sensor_warning, 0x0, 0x10, 1);
+
 /* MTBR - Management Temperature Bulk Register
  * -------------------------------------------
  * This register is used for bulk temperature reading.
@@ -11041,7 +11170,9 @@ static const struct mlxsw_reg_info *mlxsw_reg_infos[] = {
 	MLXSW_REG(pptb),
 	MLXSW_REG(pbmc),
 	MLXSW_REG(pspa),
+	MLXSW_REG(pmaos),
 	MLXSW_REG(pplr),
+	MLXSW_REG(pmpe),
 	MLXSW_REG(pddr),
 	MLXSW_REG(pmtm),
 	MLXSW_REG(htgt),
@@ -11071,6 +11202,7 @@ static const struct mlxsw_reg_info *mlxsw_reg_infos[] = {
 	MLXSW_REG(fore),
 	MLXSW_REG(mtcap),
 	MLXSW_REG(mtmp),
+	MLXSW_REG(mtwe),
 	MLXSW_REG(mtbr),
 	MLXSW_REG(mcia),
 	MLXSW_REG(mpat),

drivers/net/ethernet/mellanox/mlxsw/spectrum.c

@@ -1365,6 +1365,22 @@ static int mlxsw_sp_port_tc_mc_mode_set(struct mlxsw_sp_port *mlxsw_sp_port,
 	return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(qtctm), qtctm_pl);
 }
 
+static int mlxsw_sp_port_overheat_init_val_set(struct mlxsw_sp_port *mlxsw_sp_port)
+{
+	struct mlxsw_sp *mlxsw_sp = mlxsw_sp_port->mlxsw_sp;
+	u8 module = mlxsw_sp_port->mapping.module;
+	u64 overheat_counter;
+	int err;
+
+	err = mlxsw_env_module_overheat_counter_get(mlxsw_sp->core, module,
+						    &overheat_counter);
+	if (err)
+		return err;
+
+	mlxsw_sp_port->module_overheat_initial_val = overheat_counter;
+	return 0;
+}
+
 static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 				u8 split_base_local_port,
 				struct mlxsw_sp_port_mapping *port_mapping)
@@ -1575,6 +1591,14 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 			  mlxsw_sp->ptp_ops->shaper_work);
 
 	mlxsw_sp->ports[local_port] = mlxsw_sp_port;
+
+	err = mlxsw_sp_port_overheat_init_val_set(mlxsw_sp_port);
+	if (err) {
+		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to set overheat initial value\n",
+			mlxsw_sp_port->local_port);
+		goto err_port_overheat_init_val_set;
+	}
+
 	err = register_netdev(dev);
 	if (err) {
 		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to register netdev\n",
@@ -1588,6 +1612,7 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 	return 0;
 
 err_register_netdev:
+err_port_overheat_init_val_set:
 	mlxsw_sp->ports[local_port] = NULL;
 	mlxsw_sp_port_vlan_destroy(mlxsw_sp_port_vlan);
 err_port_vlan_create:
@@ -2440,6 +2465,22 @@ static int mlxsw_sp_basic_trap_groups_set(struct mlxsw_core *mlxsw_core)
 			    MLXSW_REG_HTGT_INVALID_POLICER,
 			    MLXSW_REG_HTGT_DEFAULT_PRIORITY,
 			    MLXSW_REG_HTGT_DEFAULT_TC);
+	err = mlxsw_reg_write(mlxsw_core, MLXSW_REG(htgt), htgt_pl);
+	if (err)
+		return err;
+
+	mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_MTWE,
+			    MLXSW_REG_HTGT_INVALID_POLICER,
+			    MLXSW_REG_HTGT_DEFAULT_PRIORITY,
+			    MLXSW_REG_HTGT_DEFAULT_TC);
+	err = mlxsw_reg_write(mlxsw_core, MLXSW_REG(htgt), htgt_pl);
+	if (err)
+		return err;
+
+	mlxsw_reg_htgt_pack(htgt_pl, MLXSW_REG_HTGT_TRAP_GROUP_PMPE,
+			    MLXSW_REG_HTGT_INVALID_POLICER,
+			    MLXSW_REG_HTGT_DEFAULT_PRIORITY,
+			    MLXSW_REG_HTGT_DEFAULT_TC);
 	return mlxsw_reg_write(mlxsw_core, MLXSW_REG(htgt), htgt_pl);
 }
 
@@ -3197,6 +3238,7 @@ static struct mlxsw_driver mlxsw_sp1_driver = {
 	.profile			= &mlxsw_sp1_config_profile,
 	.res_query_enabled		= true,
 	.fw_fatal_enabled		= true,
+	.temp_warn_enabled		= true,
 };
 
 static struct mlxsw_driver mlxsw_sp2_driver = {
@@ -3237,6 +3279,7 @@ static struct mlxsw_driver mlxsw_sp2_driver = {
 	.profile			= &mlxsw_sp2_config_profile,
 	.res_query_enabled		= true,
 	.fw_fatal_enabled		= true,
+	.temp_warn_enabled		= true,
 };
 
 static struct mlxsw_driver mlxsw_sp3_driver = {
@@ -3277,6 +3320,7 @@ static struct mlxsw_driver mlxsw_sp3_driver = {
 	.profile			= &mlxsw_sp2_config_profile,
 	.res_query_enabled		= true,
 	.fw_fatal_enabled		= true,
+	.temp_warn_enabled		= true,
 };
 
 bool mlxsw_sp_port_dev_check(const struct net_device *dev)

drivers/net/ethernet/mellanox/mlxsw/spectrum.h

@@ -319,6 +319,7 @@ struct mlxsw_sp_port {
 	int max_mtu;
 	u32 max_speed;
 	struct mlxsw_sp_hdroom *hdroom;
+	u64 module_overheat_initial_val;
 };
 
 struct mlxsw_sp_port_type_speed_ops {

drivers/net/ethernet/mellanox/mlxsw/spectrum_ethtool.c

@@ -2,6 +2,7 @@
 /* Copyright (c) 2020 Mellanox Technologies. All rights reserved */
 
 #include "reg.h"
+#include "core.h"
 #include "spectrum.h"
 #include "core_env.h"
 
@@ -552,6 +553,37 @@ static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_tc_stats[] = {
 
 #define MLXSW_SP_PORT_HW_TC_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_hw_tc_stats)
 
+struct mlxsw_sp_port_stats {
+	char str[ETH_GSTRING_LEN];
+	u64 (*getter)(struct mlxsw_sp_port *mlxsw_sp_port);
+};
+
+static u64
+mlxsw_sp_port_get_transceiver_overheat_stats(struct mlxsw_sp_port *mlxsw_sp_port)
+{
+	struct mlxsw_sp_port_mapping port_mapping = mlxsw_sp_port->mapping;
+	struct mlxsw_core *mlxsw_core = mlxsw_sp_port->mlxsw_sp->core;
+	u64 stats;
+	int err;
+
+	err = mlxsw_env_module_overheat_counter_get(mlxsw_core,
+						    port_mapping.module,
+						    &stats);
+	if (err)
+		return mlxsw_sp_port->module_overheat_initial_val;
+
+	return stats - mlxsw_sp_port->module_overheat_initial_val;
+}
+
+static struct mlxsw_sp_port_stats mlxsw_sp_port_transceiver_stats[] = {
+	{
+		.str = "transceiver_overheat",
+		.getter = mlxsw_sp_port_get_transceiver_overheat_stats,
+	},
+};
+
+#define MLXSW_SP_PORT_HW_TRANSCEIVER_STATS_LEN ARRAY_SIZE(mlxsw_sp_port_transceiver_stats)
+
 #define MLXSW_SP_PORT_ETHTOOL_STATS_LEN (MLXSW_SP_PORT_HW_STATS_LEN + \
 					 MLXSW_SP_PORT_HW_RFC_2863_STATS_LEN + \
 					 MLXSW_SP_PORT_HW_RFC_2819_STATS_LEN + \
@@ -561,7 +593,8 @@ static struct mlxsw_sp_port_hw_stats mlxsw_sp_port_hw_tc_stats[] = {
 					 (MLXSW_SP_PORT_HW_PRIO_STATS_LEN * \
 					  IEEE_8021QAZ_MAX_TCS) + \
 					 (MLXSW_SP_PORT_HW_TC_STATS_LEN * \
-					  TC_MAX_QUEUE))
+					  TC_MAX_QUEUE) + \
+					  MLXSW_SP_PORT_HW_TRANSCEIVER_STATS_LEN)
 
 static void mlxsw_sp_port_get_prio_strings(u8 **p, int prio)
 {
@@ -637,6 +670,12 @@ static void mlxsw_sp_port_get_strings(struct net_device *dev,
 			mlxsw_sp_port_get_tc_strings(&p, i);
 
 		mlxsw_sp_port->mlxsw_sp->ptp_ops->get_stats_strings(&p);
+
+		for (i = 0; i < MLXSW_SP_PORT_HW_TRANSCEIVER_STATS_LEN; i++) {
+			memcpy(p, mlxsw_sp_port_transceiver_stats[i].str,
+			       ETH_GSTRING_LEN);
+			p += ETH_GSTRING_LEN;
+		}
 		break;
 	}
 }
@@ -732,6 +771,17 @@ static void __mlxsw_sp_port_get_stats(struct net_device *dev,
 	}
 }
 
+static void __mlxsw_sp_port_get_env_stats(struct net_device *dev, u64 *data, int data_index,
+					  struct mlxsw_sp_port_stats *port_stats,
+					  int len)
+{
+	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
+	int i;
+
+	for (i = 0; i < len; i++)
+		data[data_index + i] = port_stats[i].getter(mlxsw_sp_port);
+}
+
 static void mlxsw_sp_port_get_stats(struct net_device *dev,
 				    struct ethtool_stats *stats, u64 *data)
 {
@@ -786,6 +836,11 @@ static void mlxsw_sp_port_get_stats(struct net_device *dev,
 	mlxsw_sp_port->mlxsw_sp->ptp_ops->get_stats(mlxsw_sp_port,
 						    data, data_index);
 	data_index += mlxsw_sp_port->mlxsw_sp->ptp_ops->get_stats_count();
+
+	/* Transceiver counters */
+	__mlxsw_sp_port_get_env_stats(dev, data, data_index, mlxsw_sp_port_transceiver_stats,
+				      MLXSW_SP_PORT_HW_TRANSCEIVER_STATS_LEN);
+	data_index += MLXSW_SP_PORT_HW_TRANSCEIVER_STATS_LEN;
 }
 
 static int mlxsw_sp_port_get_sset_count(struct net_device *dev, int sset)

drivers/net/ethernet/mellanox/mlxsw/trap.h

@@ -124,6 +124,10 @@ enum mlxsw_event_trap_id {
 	MLXSW_TRAP_ID_MFDE = 0x3,
 	/* Port Up/Down event generated by hardware */
 	MLXSW_TRAP_ID_PUDE = 0x8,
+	/* Port Module Plug/Unplug Event generated by hardware */
+	MLXSW_TRAP_ID_PMPE = 0x9,
+	/* Temperature Warning event generated by hardware */
+	MLXSW_TRAP_ID_MTWE = 0xC,
 	/* PTP Ingress FIFO has a new entry */
 	MLXSW_TRAP_ID_PTP_ING_FIFO = 0x2D,
 	/* PTP Egress FIFO has a new entry */