From: Saeed Mahameed Date: Tue, 20 Nov 2018 22:12:28 +0000 (-0800) Subject: net/mlx5: Improve core device events handling X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=2c89156082b3be7a064b09dfb0bcd274609f355d;p=openwrt%2Fstaging%2Fblogic.git net/mlx5: Improve core device events handling Register a separate handler per event type, rather than listening for all events and looking for the events to handle in a switch case. Signed-off-by: Saeed Mahameed --- diff --git a/drivers/net/ethernet/mellanox/mlx5/core/events.c b/drivers/net/ethernet/mellanox/mlx5/core/events.c index d3ab86bd394b..3ad004af37d7 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/events.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/events.c @@ -2,15 +2,41 @@ // Copyright (c) 2018 Mellanox Technologies #include + #include "mlx5_core.h" #include "lib/eq.h" #include "lib/mlx5.h" +struct mlx5_event_nb { + struct mlx5_nb nb; + void *ctx; +}; + +/* General events handlers for the low level mlx5_core driver + * + * Other Major feature specific events such as + * clock/eswitch/fpga/FW trace and many others, are handled elsewhere, with + * separate notifiers callbacks, specifically by those mlx5 components. + */ +static int any_notifier(struct notifier_block *, unsigned long, void *); +static int port_change(struct notifier_block *, unsigned long, void *); +static int general_event(struct notifier_block *, unsigned long, void *); +static int temp_warn(struct notifier_block *, unsigned long, void *); +static int port_module(struct notifier_block *, unsigned long, void *); + +static struct mlx5_nb events_nbs_ref[] = { + {.nb.notifier_call = any_notifier, .event_type = MLX5_EVENT_TYPE_NOTIFY_ANY }, + {.nb.notifier_call = port_change, .event_type = MLX5_EVENT_TYPE_PORT_CHANGE }, + {.nb.notifier_call = general_event, .event_type = MLX5_EVENT_TYPE_GENERAL_EVENT }, + {.nb.notifier_call = temp_warn, .event_type = MLX5_EVENT_TYPE_TEMP_WARN_EVENT }, + {.nb.notifier_call = port_module, .event_type = MLX5_EVENT_TYPE_PORT_MODULE_EVENT }, +}; + struct mlx5_events { - struct mlx5_nb nb; struct mlx5_core_dev *dev; + struct mlx5_event_nb notifiers[ARRAY_SIZE(events_nbs_ref)]; - /* port module evetns stats */ + /* port module events stats */ struct mlx5_pme_stats pme_stats; }; @@ -80,6 +106,19 @@ static const char *eqe_type_str(u8 type) } } +/* handles all FW events, type == eqe->type */ +static int any_notifier(struct notifier_block *nb, + unsigned long type, void *data) +{ + struct mlx5_event_nb *event_nb = mlx5_nb_cof(nb, struct mlx5_event_nb, nb); + struct mlx5_events *events = event_nb->ctx; + struct mlx5_eqe *eqe = data; + + mlx5_core_dbg(events->dev, "Async eqe type %s, subtype (%d)\n", + eqe_type_str(eqe->type), eqe->sub_type); + return NOTIFY_OK; +} + static enum mlx5_dev_event port_subtype2dev(u8 subtype) { switch (subtype) { @@ -101,19 +140,92 @@ static enum mlx5_dev_event port_subtype2dev(u8 subtype) return -1; } -static void temp_warning_event(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe) +/* type == MLX5_EVENT_TYPE_PORT_CHANGE */ +static int port_change(struct notifier_block *nb, + unsigned long type, void *data) { + struct mlx5_event_nb *event_nb = mlx5_nb_cof(nb, struct mlx5_event_nb, nb); + struct mlx5_events *events = event_nb->ctx; + struct mlx5_core_dev *dev = events->dev; + + bool dev_event_dispatch = false; + enum mlx5_dev_event dev_event; + unsigned long dev_event_data; + struct mlx5_eqe *eqe = data; + u8 port = (eqe->data.port.port >> 4) & 0xf; + + switch (eqe->sub_type) { + case MLX5_PORT_CHANGE_SUBTYPE_DOWN: + case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE: + case MLX5_PORT_CHANGE_SUBTYPE_LID: + case MLX5_PORT_CHANGE_SUBTYPE_PKEY: + case MLX5_PORT_CHANGE_SUBTYPE_GUID: + case MLX5_PORT_CHANGE_SUBTYPE_CLIENT_REREG: + case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED: + dev_event = port_subtype2dev(eqe->sub_type); + dev_event_data = (unsigned long)port; + dev_event_dispatch = true; + break; + default: + mlx5_core_warn(dev, "Port event with unrecognized subtype: port %d, sub_type %d\n", + port, eqe->sub_type); + } + + if (dev->event && dev_event_dispatch) + dev->event(dev, dev_event, dev_event_data); + + return NOTIFY_OK; +} + +/* type == MLX5_EVENT_TYPE_GENERAL_EVENT */ +static int general_event(struct notifier_block *nb, unsigned long type, void *data) +{ + struct mlx5_event_nb *event_nb = mlx5_nb_cof(nb, struct mlx5_event_nb, nb); + struct mlx5_events *events = event_nb->ctx; + struct mlx5_core_dev *dev = events->dev; + + bool dev_event_dispatch = false; + enum mlx5_dev_event dev_event; + unsigned long dev_event_data; + struct mlx5_eqe *eqe = data; + + switch (eqe->sub_type) { + case MLX5_GENERAL_SUBTYPE_DELAY_DROP_TIMEOUT: + dev_event = MLX5_DEV_EVENT_DELAY_DROP_TIMEOUT; + dev_event_data = 0; + dev_event_dispatch = true; + break; + default: + mlx5_core_dbg(dev, "General event with unrecognized subtype: sub_type %d\n", + eqe->sub_type); + } + + if (dev->event && dev_event_dispatch) + dev->event(dev, dev_event, dev_event_data); + + return NOTIFY_OK; +} + +/* type == MLX5_EVENT_TYPE_TEMP_WARN_EVENT */ +static int temp_warn(struct notifier_block *nb, unsigned long type, void *data) +{ + struct mlx5_event_nb *event_nb = mlx5_nb_cof(nb, struct mlx5_event_nb, nb); + struct mlx5_events *events = event_nb->ctx; + struct mlx5_eqe *eqe = data; u64 value_lsb; u64 value_msb; value_lsb = be64_to_cpu(eqe->data.temp_warning.sensor_warning_lsb); value_msb = be64_to_cpu(eqe->data.temp_warning.sensor_warning_msb); - mlx5_core_warn(dev, + mlx5_core_warn(events->dev, "High temperature on sensors with bit set %llx %llx", value_msb, value_lsb); + + return NOTIFY_OK; } +/* MLX5_EVENT_TYPE_PORT_MODULE_EVENT */ static const char *mlx5_pme_status[MLX5_MODULE_STATUS_NUM] = { "Cable plugged", /* MLX5_MODULE_STATUS_PLUGGED = 0x1 */ "Cable unplugged", /* MLX5_MODULE_STATUS_UNPLUGGED = 0x2 */ @@ -132,12 +244,16 @@ static const char *mlx5_pme_error[MLX5_MODULE_EVENT_ERROR_NUM] = { "Unknown status", }; -static void port_module_event(struct mlx5_events *events, struct mlx5_eqe *eqe) +/* type == MLX5_EVENT_TYPE_PORT_MODULE_EVENT */ +static int port_module(struct notifier_block *nb, unsigned long type, void *data) { + struct mlx5_event_nb *event_nb = mlx5_nb_cof(nb, struct mlx5_event_nb, nb); + struct mlx5_events *events = event_nb->ctx; + struct mlx5_eqe *eqe = data; + enum port_module_event_status_type module_status; enum port_module_event_error_type error_type; struct mlx5_eqe_port_module *module_event_eqe; - struct mlx5_core_dev *dev = events->dev; u8 module_num; module_event_eqe = &eqe->data.port_module; @@ -146,7 +262,6 @@ static void port_module_event(struct mlx5_events *events, struct mlx5_eqe *eqe) PORT_MODULE_EVENT_MODULE_STATUS_MASK; error_type = module_event_eqe->error_type & PORT_MODULE_EVENT_ERROR_TYPE_MASK; - if (module_status < MLX5_MODULE_STATUS_ERROR) { events->pme_stats.status_counters[module_status - 1]++; } else if (module_status == MLX5_MODULE_STATUS_ERROR) { @@ -157,18 +272,20 @@ static void port_module_event(struct mlx5_events *events, struct mlx5_eqe *eqe) } if (!printk_ratelimit()) - return; + return NOTIFY_OK; if (module_status < MLX5_MODULE_STATUS_ERROR) - mlx5_core_info(dev, + mlx5_core_info(events->dev, "Port module event: module %u, %s\n", module_num, mlx5_pme_status[module_status - 1]); else if (module_status == MLX5_MODULE_STATUS_ERROR) - mlx5_core_info(dev, + mlx5_core_info(events->dev, "Port module event[error]: module %u, %s, %s\n", module_num, mlx5_pme_status[module_status - 1], mlx5_pme_error[error_type]); + + return NOTIFY_OK; } void mlx5_get_pme_stats(struct mlx5_core_dev *dev, struct mlx5_pme_stats *stats) @@ -176,80 +293,6 @@ void mlx5_get_pme_stats(struct mlx5_core_dev *dev, struct mlx5_pme_stats *stats) *stats = dev->priv.events->pme_stats; } -/* Event handler for the low level mlx5_core driver. - * This handler will process/filter _some_ events and sometimes dispatch - * the equivalent mlx5_dev_event to the HCA interfaces (mlx5_ib and mlx5e) - * - * Other Major feature specific events such as - * clock/eswitch/fpga/FW trace and many others, are handled elsewhere, with - * separate notifiers callbacks, specifically by those mlx5 components. - */ -static int events_notifier(struct notifier_block *nb, - unsigned long type, void *data) -{ - bool dev_event_dispatch = false; - enum mlx5_dev_event dev_event; - unsigned long dev_event_data; - - struct mlx5_eqe *eqe = data; - struct mlx5_events *events; - struct mlx5_core_dev *dev; - u8 port; - - events = mlx5_nb_cof(nb, struct mlx5_events, nb); - dev = events->dev; - - mlx5_core_dbg(dev, "Async eqe type %s, subtype (%d)\n", - eqe_type_str(eqe->type), eqe->sub_type); - switch (eqe->type) { - case MLX5_EVENT_TYPE_PORT_CHANGE: - port = (eqe->data.port.port >> 4) & 0xf; - switch (eqe->sub_type) { - case MLX5_PORT_CHANGE_SUBTYPE_DOWN: - case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE: - case MLX5_PORT_CHANGE_SUBTYPE_LID: - case MLX5_PORT_CHANGE_SUBTYPE_PKEY: - case MLX5_PORT_CHANGE_SUBTYPE_GUID: - case MLX5_PORT_CHANGE_SUBTYPE_CLIENT_REREG: - case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED: - dev_event = port_subtype2dev(eqe->sub_type); - dev_event_data = (unsigned long)port; - dev_event_dispatch = true; - break; - default: - mlx5_core_warn(dev, "Port event with unrecognized subtype: port %d, sub_type %d\n", - port, eqe->sub_type); - } - break; - case MLX5_EVENT_TYPE_GENERAL_EVENT: - switch (eqe->sub_type) { - case MLX5_GENERAL_SUBTYPE_DELAY_DROP_TIMEOUT: - dev_event = MLX5_DEV_EVENT_DELAY_DROP_TIMEOUT; - dev_event_data = 0; - dev_event_dispatch = true; - break; - default: - mlx5_core_dbg(dev, "General event with unrecognized subtype: sub_type %d\n", - eqe->sub_type); - } - break; - - case MLX5_EVENT_TYPE_PORT_MODULE_EVENT: - port_module_event(events, eqe); - break; - case MLX5_EVENT_TYPE_TEMP_WARN_EVENT: - temp_warning_event(dev, eqe); - break; - default: - return NOTIFY_DONE; - } - - if (dev->event && dev_event_dispatch) - dev->event(dev, dev_event, dev_event_data); - - return NOTIFY_OK; -} - int mlx5_events_init(struct mlx5_core_dev *dev) { struct mlx5_events *events = kzalloc(sizeof(*events), GFP_KERNEL); @@ -270,14 +313,20 @@ void mlx5_events_cleanup(struct mlx5_core_dev *dev) void mlx5_events_start(struct mlx5_core_dev *dev) { struct mlx5_events *events = dev->priv.events; + int i; - MLX5_NB_INIT(&events->nb, events_notifier, NOTIFY_ANY); - mlx5_eq_notifier_register(dev, &events->nb); + for (i = 0; i < ARRAY_SIZE(events_nbs_ref); i++) { + events->notifiers[i].nb = events_nbs_ref[i]; + events->notifiers[i].ctx = events; + mlx5_eq_notifier_register(dev, &events->notifiers[i].nb); + } } void mlx5_events_stop(struct mlx5_core_dev *dev) { struct mlx5_events *events = dev->priv.events; + int i; - mlx5_eq_notifier_unregister(dev, &events->nb); + for (i = ARRAY_SIZE(events_nbs_ref) - 1; i >= 0 ; i--) + mlx5_eq_notifier_unregister(dev, &events->notifiers[i].nb); }