diff options
| -rw-r--r-- | Documentation/networking/devlink/devlink-resource.rst | 14 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core.c | 77 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core.h | 5 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 2 | ||||
| -rw-r--r-- | include/net/devlink.h | 2 | ||||
| -rw-r--r-- | net/core/devlink.c | 4 |
6 files changed, 93 insertions, 11 deletions
diff --git a/Documentation/networking/devlink/devlink-resource.rst b/Documentation/networking/devlink/devlink-resource.rst index 93e92d2f0752..3d5ae51e65a2 100644 --- a/Documentation/networking/devlink/devlink-resource.rst +++ b/Documentation/networking/devlink/devlink-resource.rst @@ -23,6 +23,20 @@ current size and related sub resources. To access a sub resource, you specify the path of the resource. For example ``/IPv4/fib`` is the id for the ``fib`` sub-resource under the ``IPv4`` resource. +Generic Resources +================= + +Generic resources are used to describe resources that can be shared by multiple +device drivers and their description must be added to the following table: + +.. list-table:: List of Generic Resources + :widths: 10 90 + + * - Name + - Description + * - ``physical_ports`` + - A limited capacity of physical ports that the switch ASIC can support + example usage ------------- diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c index 685037e052af..52fdc34251ba 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core.c @@ -84,6 +84,7 @@ struct mlxsw_core { struct mlxsw_thermal *thermal; struct mlxsw_core_port *ports; unsigned int max_ports; + atomic_t active_ports_count; bool fw_flash_in_progress; struct { struct devlink_health_reporter *fw_fatal; @@ -96,8 +97,36 @@ struct mlxsw_core { #define MLXSW_PORT_MAX_PORTS_DEFAULT 0x40 -static int mlxsw_ports_init(struct mlxsw_core *mlxsw_core) +static u64 mlxsw_ports_occ_get(void *priv) { + struct mlxsw_core *mlxsw_core = priv; + + return atomic_read(&mlxsw_core->active_ports_count); +} + +static int mlxsw_core_resources_ports_register(struct mlxsw_core *mlxsw_core) +{ + struct devlink *devlink = priv_to_devlink(mlxsw_core); + struct devlink_resource_size_params ports_num_params; + u32 max_ports; + + max_ports = mlxsw_core->max_ports - 1; + devlink_resource_size_params_init(&ports_num_params, max_ports, + max_ports, 1, + DEVLINK_RESOURCE_UNIT_ENTRY); + + return devlink_resource_register(devlink, + DEVLINK_RESOURCE_GENERIC_NAME_PORTS, + max_ports, MLXSW_CORE_RESOURCE_PORTS, + DEVLINK_RESOURCE_ID_PARENT_TOP, + &ports_num_params); +} + +static int mlxsw_ports_init(struct mlxsw_core *mlxsw_core, bool reload) +{ + struct devlink *devlink = priv_to_devlink(mlxsw_core); + int err; + /* Switch ports are numbered from 1 to queried value */ if (MLXSW_CORE_RES_VALID(mlxsw_core, MAX_SYSTEM_PORT)) mlxsw_core->max_ports = MLXSW_CORE_RES_GET(mlxsw_core, @@ -110,11 +139,30 @@ static int mlxsw_ports_init(struct mlxsw_core *mlxsw_core) if (!mlxsw_core->ports) return -ENOMEM; + if (!reload) { + err = mlxsw_core_resources_ports_register(mlxsw_core); + if (err) + goto err_resources_ports_register; + } + atomic_set(&mlxsw_core->active_ports_count, 0); + devlink_resource_occ_get_register(devlink, MLXSW_CORE_RESOURCE_PORTS, + mlxsw_ports_occ_get, mlxsw_core); + return 0; + +err_resources_ports_register: + kfree(mlxsw_core->ports); + return err; } -static void mlxsw_ports_fini(struct mlxsw_core *mlxsw_core) +static void mlxsw_ports_fini(struct mlxsw_core *mlxsw_core, bool reload) { + struct devlink *devlink = priv_to_devlink(mlxsw_core); + + devlink_resource_occ_get_unregister(devlink, MLXSW_CORE_RESOURCE_PORTS); + if (!reload) + devlink_resources_unregister(priv_to_devlink(mlxsw_core), NULL); + kfree(mlxsw_core->ports); } @@ -1897,7 +1945,7 @@ __mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, goto err_register_resources; } - err = mlxsw_ports_init(mlxsw_core); + err = mlxsw_ports_init(mlxsw_core, reload); if (err) goto err_ports_init; @@ -1986,7 +2034,7 @@ err_devlink_register: err_emad_init: kfree(mlxsw_core->lag.mapping); err_alloc_lag_mapping: - mlxsw_ports_fini(mlxsw_core); + mlxsw_ports_fini(mlxsw_core, reload); err_ports_init: if (!reload) devlink_resources_unregister(devlink, NULL); @@ -2056,7 +2104,7 @@ void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core, devlink_unregister(devlink); mlxsw_emad_fini(mlxsw_core); kfree(mlxsw_core->lag.mapping); - mlxsw_ports_fini(mlxsw_core); + mlxsw_ports_fini(mlxsw_core, reload); if (!reload) devlink_resources_unregister(devlink, NULL); mlxsw_core->bus->fini(mlxsw_core->bus_priv); @@ -2755,16 +2803,25 @@ int mlxsw_core_port_init(struct mlxsw_core *mlxsw_core, u8 local_port, const unsigned char *switch_id, unsigned char switch_id_len) { - return __mlxsw_core_port_init(mlxsw_core, local_port, - DEVLINK_PORT_FLAVOUR_PHYSICAL, - port_number, split, split_port_subnumber, - splittable, lanes, - switch_id, switch_id_len); + int err; + + err = __mlxsw_core_port_init(mlxsw_core, local_port, + DEVLINK_PORT_FLAVOUR_PHYSICAL, + port_number, split, split_port_subnumber, + splittable, lanes, + switch_id, switch_id_len); + if (err) + return err; + + atomic_inc(&mlxsw_core->active_ports_count); + return 0; } EXPORT_SYMBOL(mlxsw_core_port_init); void mlxsw_core_port_fini(struct mlxsw_core *mlxsw_core, u8 local_port) { + atomic_dec(&mlxsw_core->active_ports_count); + __mlxsw_core_port_fini(mlxsw_core, local_port); } EXPORT_SYMBOL(mlxsw_core_port_fini); diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h index 6b3ccbf6b238..8af7d9d03475 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.h +++ b/drivers/net/ethernet/mellanox/mlxsw/core.h @@ -19,6 +19,11 @@ #include "cmd.h" #include "resources.h" +enum mlxsw_core_resource_id { + MLXSW_CORE_RESOURCE_PORTS = 1, + MLXSW_CORE_RESOURCE_MAX, +}; + struct mlxsw_core; struct mlxsw_core_port; struct mlxsw_driver; diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h index a6956cfc9cb1..a3769f95a182 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h @@ -52,7 +52,7 @@ #define MLXSW_SP_RESOURCE_NAME_COUNTERS_RIF "rif" enum mlxsw_sp_resource_id { - MLXSW_SP_RESOURCE_KVD = 1, + MLXSW_SP_RESOURCE_KVD = MLXSW_CORE_RESOURCE_MAX, MLXSW_SP_RESOURCE_KVD_LINEAR, MLXSW_SP_RESOURCE_KVD_HASH_SINGLE, MLXSW_SP_RESOURCE_KVD_HASH_DOUBLE, diff --git a/include/net/devlink.h b/include/net/devlink.h index f466819cc477..d12ed2854c34 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -380,6 +380,8 @@ struct devlink_resource { #define DEVLINK_RESOURCE_ID_PARENT_TOP 0 +#define DEVLINK_RESOURCE_GENERIC_NAME_PORTS "physical_ports" + #define __DEVLINK_PARAM_MAX_STRING_VALUE 32 enum devlink_param_type { DEVLINK_PARAM_TYPE_U8, diff --git a/net/core/devlink.c b/net/core/devlink.c index 738d4344d679..72ea79879762 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -8617,6 +8617,10 @@ EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister); * @resource_id: resource's id * @parent_resource_id: resource's parent id * @size_params: size parameters + * + * Generic resources should reuse the same names across drivers. + * Please see the generic resources list at: + * Documentation/networking/devlink/devlink-resource.rst */ int devlink_resource_register(struct devlink *devlink, const char *resource_name, |