diff options
| -rw-r--r-- | Documentation/ABI/testing/devlink-resource-mlxsw | 33 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core.c | 92 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core.h | 16 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/i2c.c | 5 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/pci.c | 98 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.c | 249 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum.h | 13 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c | 81 | ||||
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c | 26 | ||||
| -rw-r--r-- | include/net/devlink.h | 115 | ||||
| -rw-r--r-- | include/uapi/linux/devlink.h | 25 | ||||
| -rw-r--r-- | net/core/devlink.c | 594 |
12 files changed, 1213 insertions, 134 deletions
diff --git a/Documentation/ABI/testing/devlink-resource-mlxsw b/Documentation/ABI/testing/devlink-resource-mlxsw new file mode 100644 index 000000000000..259ed2948ec0 --- /dev/null +++ b/Documentation/ABI/testing/devlink-resource-mlxsw @@ -0,0 +1,33 @@ +What: /kvd/ +Date: 08-Jan-2018 +KernelVersion: v4.16 +Contact: mlxsw@mellanox.com +Description: The main database in the Spectrum device is a centralized + KVD database used for many of the tables used to configure + the chip including L2 FDB, L3 LPM, ECMP and more. The KVD + is divided into two sections, the first is hash-based table + and the second is a linear access table. The division + between the linear and hash-based sections is static and + require reload before the changes take effect. + +What: /kvd/linear +Date: 08-Jan-2018 +KernelVersion: v4.16 +Contact: mlxsw@mellanox.com +Description: The linear section of the KVD is managed by software as a + flat memory accessed using an index. + +What: /kvd/hash_single +Date: 08-Jan-2018 +KernelVersion: v4.16 +Contact: mlxsw@mellanox.com +Description: The hash based section of the KVD is managed by the switch + device. Used in case the key size is smaller or equal to + 64bit. + +What: /kvd/hash_double +Date: 08-Jan-2018 +KernelVersion: v4.16 +Contact: mlxsw@mellanox.com +Description: The hash based section of the KVD is managed by the switch + device. Used in case the key is larger than 64 bit. diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c index f3315bc874ad..3529b545675d 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core.c @@ -113,6 +113,7 @@ struct mlxsw_core { struct mlxsw_thermal *thermal; struct mlxsw_core_port *ports; unsigned int max_ports; + bool reload_fail; unsigned long driver_priv[0]; /* driver_priv has to be always the last item */ }; @@ -962,7 +963,28 @@ mlxsw_devlink_sb_occ_tc_port_bind_get(struct devlink_port *devlink_port, pool_type, p_cur, p_max); } +static int mlxsw_devlink_core_bus_device_reload(struct devlink *devlink) +{ + struct mlxsw_core *mlxsw_core = devlink_priv(devlink); + const struct mlxsw_bus *mlxsw_bus = mlxsw_core->bus; + int err; + + if (!mlxsw_bus->reset) + return -EOPNOTSUPP; + + mlxsw_core_bus_device_unregister(mlxsw_core, true); + mlxsw_bus->reset(mlxsw_core->bus_priv); + err = mlxsw_core_bus_device_register(mlxsw_core->bus_info, + mlxsw_core->bus, + mlxsw_core->bus_priv, true, + devlink); + if (err) + mlxsw_core->reload_fail = true; + return err; +} + static const struct devlink_ops mlxsw_devlink_ops = { + .reload = mlxsw_devlink_core_bus_device_reload, .port_type_set = mlxsw_devlink_port_type_set, .port_split = mlxsw_devlink_port_split, .port_unsplit = mlxsw_devlink_port_unsplit, @@ -980,23 +1002,26 @@ static const struct devlink_ops mlxsw_devlink_ops = { int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, const struct mlxsw_bus *mlxsw_bus, - void *bus_priv) + void *bus_priv, bool reload, + struct devlink *devlink) { const char *device_kind = mlxsw_bus_info->device_kind; struct mlxsw_core *mlxsw_core; struct mlxsw_driver *mlxsw_driver; - struct devlink *devlink; size_t alloc_size; int err; mlxsw_driver = mlxsw_core_driver_get(device_kind); if (!mlxsw_driver) return -EINVAL; - alloc_size = sizeof(*mlxsw_core) + mlxsw_driver->priv_size; - devlink = devlink_alloc(&mlxsw_devlink_ops, alloc_size); - if (!devlink) { - err = -ENOMEM; - goto err_devlink_alloc; + + if (!reload) { + alloc_size = sizeof(*mlxsw_core) + mlxsw_driver->priv_size; + devlink = devlink_alloc(&mlxsw_devlink_ops, alloc_size); + if (!devlink) { + err = -ENOMEM; + goto err_devlink_alloc; + } } mlxsw_core = devlink_priv(devlink); @@ -1012,6 +1037,12 @@ int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, if (err) goto err_bus_init; + if (mlxsw_driver->resources_register && !reload) { + err = mlxsw_driver->resources_register(mlxsw_core); + if (err) + goto err_register_resources; + } + err = mlxsw_ports_init(mlxsw_core); if (err) goto err_ports_init; @@ -1032,9 +1063,11 @@ int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, if (err) goto err_emad_init; - err = devlink_register(devlink, mlxsw_bus_info->dev); - if (err) - goto err_devlink_register; + if (!reload) { + err = devlink_register(devlink, mlxsw_bus_info->dev); + if (err) + goto err_devlink_register; + } err = mlxsw_hwmon_init(mlxsw_core, mlxsw_bus_info, &mlxsw_core->hwmon); if (err) @@ -1057,7 +1090,8 @@ err_driver_init: mlxsw_thermal_fini(mlxsw_core->thermal); err_thermal_init: err_hwmon_init: - devlink_unregister(devlink); + if (!reload) + devlink_unregister(devlink); err_devlink_register: mlxsw_emad_fini(mlxsw_core); err_emad_init: @@ -1067,26 +1101,40 @@ err_alloc_lag_mapping: err_ports_init: mlxsw_bus->fini(bus_priv); err_bus_init: - devlink_free(devlink); + if (!reload) + devlink_resources_unregister(devlink, NULL); +err_register_resources: + if (!reload) + devlink_free(devlink); err_devlink_alloc: mlxsw_core_driver_put(device_kind); return err; } EXPORT_SYMBOL(mlxsw_core_bus_device_register); -void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core) +void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core, + bool reload) { const char *device_kind = mlxsw_core->bus_info->device_kind; struct devlink *devlink = priv_to_devlink(mlxsw_core); + if (mlxsw_core->reload_fail) + goto reload_fail; + if (mlxsw_core->driver->fini) mlxsw_core->driver->fini(mlxsw_core); mlxsw_thermal_fini(mlxsw_core->thermal); - devlink_unregister(devlink); + if (!reload) + devlink_unregister(devlink); mlxsw_emad_fini(mlxsw_core); kfree(mlxsw_core->lag.mapping); mlxsw_ports_fini(mlxsw_core); + if (!reload) + devlink_resources_unregister(devlink, NULL); mlxsw_core->bus->fini(mlxsw_core->bus_priv); + if (reload) + return; +reload_fail: devlink_free(devlink); mlxsw_core_driver_put(device_kind); } @@ -1791,6 +1839,22 @@ void mlxsw_core_flush_owq(void) } EXPORT_SYMBOL(mlxsw_core_flush_owq); +int mlxsw_core_kvd_sizes_get(struct mlxsw_core *mlxsw_core, + const struct mlxsw_config_profile *profile, + u64 *p_single_size, u64 *p_double_size, + u64 *p_linear_size) +{ + struct mlxsw_driver *driver = mlxsw_core->driver; + + if (!driver->kvd_sizes_get) + return -EINVAL; + + return driver->kvd_sizes_get(mlxsw_core, profile, + p_single_size, p_double_size, + p_linear_size); +} +EXPORT_SYMBOL(mlxsw_core_kvd_sizes_get); + static int __init mlxsw_core_module_init(void) { int err; diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h index 6e966af72fc4..5ddafd74dc00 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.h +++ b/drivers/net/ethernet/mellanox/mlxsw/core.h @@ -66,8 +66,9 @@ void mlxsw_core_driver_unregister(struct mlxsw_driver *mlxsw_driver); int mlxsw_core_bus_device_register(const struct mlxsw_bus_info *mlxsw_bus_info, const struct mlxsw_bus *mlxsw_bus, - void *bus_priv); -void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core); + void *bus_priv, bool reload, + struct devlink *devlink); +void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core, bool reload); struct mlxsw_tx_info { u8 local_port; @@ -308,10 +309,20 @@ struct mlxsw_driver { u32 *p_cur, u32 *p_max); void (*txhdr_construct)(struct sk_buff *skb, const struct mlxsw_tx_info *tx_info); + int (*resources_register)(struct mlxsw_core *mlxsw_core); + int (*kvd_sizes_get)(struct mlxsw_core *mlxsw_core, + const struct mlxsw_config_profile *profile, + u64 *p_single_size, u64 *p_double_size, + u64 *p_linear_size); u8 txhdr_len; const struct mlxsw_config_profile *profile; }; +int mlxsw_core_kvd_sizes_get(struct mlxsw_core *mlxsw_core, + const struct mlxsw_config_profile *profile, + u64 *p_single_size, u64 *p_double_size, + u64 *p_linear_size); + bool mlxsw_core_res_valid(struct mlxsw_core *mlxsw_core, enum mlxsw_res_id res_id); @@ -332,6 +343,7 @@ struct mlxsw_bus { const struct mlxsw_config_profile *profile, struct mlxsw_res *res); void (*fini)(void *bus_priv); + void (*reset)(void *bus_priv); bool (*skb_transmit_busy)(void *bus_priv, const struct mlxsw_tx_info *tx_info); int (*skb_transmit)(void *bus_priv, struct sk_buff *skb, diff --git a/drivers/net/ethernet/mellanox/mlxsw/i2c.c b/drivers/net/ethernet/mellanox/mlxsw/i2c.c index c0dcfa05b077..25f9915ebd82 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/i2c.c +++ b/drivers/net/ethernet/mellanox/mlxsw/i2c.c @@ -539,7 +539,8 @@ static int mlxsw_i2c_probe(struct i2c_client *client, mlxsw_i2c->dev = &client->dev; err = mlxsw_core_bus_device_register(&mlxsw_i2c->bus_info, - &mlxsw_i2c_bus, mlxsw_i2c); + &mlxsw_i2c_bus, mlxsw_i2c, false, + NULL); if (err) { dev_err(&client->dev, "Fail to register core bus\n"); return err; @@ -557,7 +558,7 @@ static int mlxsw_i2c_remove(struct i2c_client *client) { struct mlxsw_i2c *mlxsw_i2c = i2c_get_clientdata(client); - mlxsw_core_bus_device_unregister(mlxsw_i2c->core); + mlxsw_core_bus_device_unregister(mlxsw_i2c->core, false); mutex_destroy(&mlxsw_i2c->cmd.lock); return 0; diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c index 6ef20e5cc77d..85faa87bf42d 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/pci.c +++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c @@ -154,6 +154,7 @@ struct mlxsw_pci { } comp; } cmd; struct mlxsw_bus_info bus_info; + const struct pci_device_id *id; }; static void mlxsw_pci_queue_tasklet_schedule(struct mlxsw_pci_queue *q) @@ -1052,38 +1053,18 @@ static int mlxsw_pci_resources_query(struct mlxsw_pci *mlxsw_pci, char *mbox, } static int -mlxsw_pci_profile_get_kvd_sizes(const struct mlxsw_config_profile *profile, +mlxsw_pci_profile_get_kvd_sizes(const struct mlxsw_pci *mlxsw_pci, + const struct mlxsw_config_profile *profile, struct mlxsw_res *res) { - u32 single_size, double_size, linear_size; - - if (!MLXSW_RES_VALID(res, KVD_SINGLE_MIN_SIZE) || - !MLXSW_RES_VALID(res, KVD_DOUBLE_MIN_SIZE) || - !profile->used_kvd_split_data) - return -EIO; - - linear_size = profile->kvd_linear_size; + u64 single_size, double_size, linear_size; + int err; - /* The hash part is what left of the kvd without the - * linear part. It is split to the single size and - * double size by the parts ratio from the profile. - * Both sizes must be a multiplications of the - * granularity from the profile. - */ - double_size = MLXSW_RES_GET(res, KVD_SIZE) - linear_size; - double_size *= profile->kvd_hash_double_parts; - double_size /= profile->kvd_hash_double_parts + - profile->kvd_hash_single_parts; - double_size /= profile->kvd_hash_granularity; - double_size *= profile->kvd_hash_granularity; - single_size = MLXSW_RES_GET(res, KVD_SIZE) - double_size - - linear_size; - - /* Check results are legal. */ - if (single_size < MLXSW_RES_GET(res, KVD_SINGLE_MIN_SIZE) || - double_size < MLXSW_RES_GET(res, KVD_DOUBLE_MIN_SIZE) || - MLXSW_RES_GET(res, KVD_SIZE) < linear_size) - return -EIO; + err = mlxsw_core_kvd_sizes_get(mlxsw_pci->core, profile, + &single_size, &double_size, + &linear_size); + if (err) + return err; MLXSW_RES_SET(res, KVD_SINGLE_SIZE, single_size); MLXSW_RES_SET(res, KVD_DOUBLE_SIZE, double_size); @@ -1184,7 +1165,7 @@ static int mlxsw_pci_config_profile(struct mlxsw_pci *mlxsw_pci, char *mbox, mbox, profile->adaptive_routing_group_cap); } if (MLXSW_RES_VALID(res, KVD_SIZE)) { - err = mlxsw_pci_profile_get_kvd_sizes(profile, res); + err = mlxsw_pci_profile_get_kvd_sizes(mlxsw_pci, profile, res); if (err) return err; @@ -1622,16 +1603,6 @@ static int mlxsw_pci_cmd_exec(void *bus_priv, u16 opcode, u8 opcode_mod, return err; } -static const struct mlxsw_bus mlxsw_pci_bus = { - .kind = "pci", - .init = mlxsw_pci_init, - .fini = mlxsw_pci_fini, - .skb_transmit_busy = mlxsw_pci_skb_transmit_busy, - .skb_transmit = mlxsw_pci_skb_transmit, - .cmd_exec = mlxsw_pci_cmd_exec, - .features = MLXSW_BUS_F_TXRX, -}; - static int mlxsw_pci_sw_reset(struct mlxsw_pci *mlxsw_pci, const struct pci_device_id *id) { @@ -1660,6 +1631,41 @@ static int mlxsw_pci_sw_reset(struct mlxsw_pci *mlxsw_pci, return 0; } +static void mlxsw_pci_free_irq_vectors(struct mlxsw_pci *mlxsw_pci) +{ + pci_free_irq_vectors(mlxsw_pci->pdev); +} + +static int mlxsw_pci_alloc_irq_vectors(struct mlxsw_pci *mlxsw_pci) +{ + int err; + + err = pci_alloc_irq_vectors(mlxsw_pci->pdev, 1, 1, PCI_IRQ_MSIX); + if (err < 0) + dev_err(&mlxsw_pci->pdev->dev, "MSI-X init failed\n"); + return err; +} + +static void mlxsw_pci_reset(void *bus_priv) +{ + struct mlxsw_pci *mlxsw_pci = bus_priv; + + mlxsw_pci_free_irq_vectors(mlxsw_pci); + mlxsw_pci_sw_reset(mlxsw_pci, mlxsw_pci->id); + mlxsw_pci_alloc_irq_vectors(mlxsw_pci); +} + +static const struct mlxsw_bus mlxsw_pci_bus = { + .kind = "pci", + .init = mlxsw_pci_init, + .fini = mlxsw_pci_fini, + .skb_transmit_busy = mlxsw_pci_skb_transmit_busy, + .skb_transmit = mlxsw_pci_skb_transmit, + .cmd_exec = mlxsw_pci_cmd_exec, + .features = MLXSW_BUS_F_TXRX, + .reset = mlxsw_pci_reset, +}; + static int mlxsw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) { const char *driver_name = pdev->driver->name; @@ -1721,7 +1727,7 @@ static int mlxsw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto err_sw_reset; } - err = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSIX); + err = mlxsw_pci_alloc_irq_vectors(mlxsw_pci); if (err < 0) { dev_err(&pdev->dev, "MSI-X init failed\n"); goto err_msix_init; @@ -1730,9 +1736,11 @@ static int mlxsw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) mlxsw_pci->bus_info.device_kind = driver_name; mlxsw_pci->bus_info.device_name = pci_name(mlxsw_pci->pdev); mlxsw_pci->bus_info.dev = &pdev->dev; + mlxsw_pci->id = id; err = mlxsw_core_bus_device_register(&mlxsw_pci->bus_info, - &mlxsw_pci_bus, mlxsw_pci); + &mlxsw_pci_bus, mlxsw_pci, false, + NULL); if (err) { dev_err(&pdev->dev, "cannot register bus device\n"); goto err_bus_device_register; @@ -1741,7 +1749,7 @@ static int mlxsw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) return 0; err_bus_device_register: - pci_free_irq_vectors(mlxsw_pci->pdev); + mlxsw_pci_free_irq_vectors(mlxsw_pci); err_msix_init: err_sw_reset: iounmap(mlxsw_pci->hw_addr); @@ -1760,8 +1768,8 @@ static void mlxsw_pci_remove(struct pci_dev *pdev) { struct mlxsw_pci *mlxsw_pci = pci_get_drvdata(pdev); - mlxsw_core_bus_device_unregister(mlxsw_pci->core); - pci_free_irq_vectors(mlxsw_pci->pdev); + mlxsw_core_bus_device_unregister(mlxsw_pci->core, false); + mlxsw_pci_free_irq_vectors(mlxsw_pci); iounmap(mlxsw_pci->hw_addr); pci_release_regions(mlxsw_pci->pdev); pci_disable_device(mlxsw_pci->pdev); diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index f78bfe394966..ed92e04309ba 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -3991,6 +3991,253 @@ static const struct mlxsw_config_profile mlxsw_sp_config_profile = { .resource_query_enable = 1, }; +static bool +mlxsw_sp_resource_kvd_granularity_validate(struct netlink_ext_ack *extack, + u64 size) +{ + const struct mlxsw_config_profile *profile; + + profile = &mlxsw_sp_config_profile; + if (size % profile->kvd_hash_granularity) { + NL_SET_ERR_MSG_MOD(extack, "resource set with wrong granularity"); + return false; + } + return true; +} + +static int +mlxsw_sp_resource_kvd_size_validate(struct devlink *devlink, u64 size, + struct netlink_ext_ack *extack) +{ + NL_SET_ERR_MSG_MOD(extack, "kvd size cannot be changed"); + return -EINVAL; +} + +static int +mlxsw_sp_resource_kvd_linear_size_validate(struct devlink *devlink, u64 size, + struct netlink_ext_ack *extack) +{ + if (!mlxsw_sp_resource_kvd_granularity_validate(extack, size)) + return -EINVAL; + + return 0; +} + +static int +mlxsw_sp_resource_kvd_hash_single_size_validate(struct devlink *devlink, u64 size, + struct netlink_ext_ack *extack) +{ + struct mlxsw_core *mlxsw_core = devlink_priv(devlink); + + if (!mlxsw_sp_resource_kvd_granularity_validate(extack, size)) + return -EINVAL; + + if (size < MLXSW_CORE_RES_GET(mlxsw_core, KVD_SINGLE_MIN_SIZE)) { + NL_SET_ERR_MSG_MOD(extack, "hash single size is smaller than minimum"); + return -EINVAL; + } + return 0; +} + +static int +mlxsw_sp_resource_kvd_hash_double_size_validate(struct devlink *devlink, u64 size, + struct netlink_ext_ack *extack) +{ + struct mlxsw_core *mlxsw_core = devlink_priv(devlink); + + if (!mlxsw_sp_resource_kvd_granularity_validate(extack, size)) + return -EINVAL; + + if (size < MLXSW_CORE_RES_GET(mlxsw_core, KVD_DOUBLE_MIN_SIZE)) { + NL_SET_ERR_MSG_MOD(extack, "hash double size is smaller than minimum"); + return -EINVAL; + } + return 0; +} + +static u64 mlxsw_sp_resource_kvd_linear_occ_get(struct devlink *devlink) +{ + struct mlxsw_core *mlxsw_core = devlink_priv(devlink); + struct mlxsw_sp *mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core); + + return mlxsw_sp_kvdl_occ_get(mlxsw_sp); +} + +static struct devlink_resource_ops mlxsw_sp_resource_kvd_ops = { + .size_validate = mlxsw_sp_resource_kvd_size_validate, +}; + +static struct devlink_resource_ops mlxsw_sp_resource_kvd_linear_ops = { + .size_validate = mlxsw_sp_resource_kvd_linear_size_validate, + .occ_get = mlxsw_sp_resource_kvd_linear_occ_get, +}; + +static struct devlink_resource_ops mlxsw_sp_resource_kvd_hash_single_ops = { + .size_validate = mlxsw_sp_resource_kvd_hash_single_size_validate, +}; + +static struct devlink_resource_ops mlxsw_sp_resource_kvd_hash_double_ops = { + .size_validate = mlxsw_sp_resource_kvd_hash_double_size_validate, +}; + +static struct devlink_resource_size_params mlxsw_sp_kvd_size_params; +static struct devlink_resource_size_params mlxsw_sp_linear_size_params; +static struct devlink_resource_size_params mlxsw_sp_hash_single_size_params; +static struct devlink_resource_size_params mlxsw_sp_hash_double_size_params; + +static void +mlxsw_sp_resource_size_params_prepare(struct mlxsw_core *mlxsw_core) +{ + u32 single_size_min = MLXSW_CORE_RES_GET(mlxsw_core, + KVD_SINGLE_MIN_SIZE); + u32 double_size_min = MLXSW_CORE_RES_GET(mlxsw_core, + KVD_DOUBLE_MIN_SIZE); + u32 kvd_size = MLXSW_CORE_RES_GET(mlxsw_core, KVD_SIZE); + u32 linear_size_min = 0; + + /* KVD top resource */ + mlxsw_sp_kvd_size_params.size_min = kvd_size; + mlxsw_sp_kvd_size_params.size_max = kvd_size; + mlxsw_sp_kvd_size_params.size_granularity = MLXSW_SP_KVD_GRANULARITY; + mlxsw_sp_kvd_size_params.unit = DEVLINK_RESOURCE_UNIT_ENTRY; + + /* Linear part init */ + mlxsw_sp_linear_size_params.size_min = linear_size_min; + mlxsw_sp_linear_size_params.size_max = kvd_size - single_size_min - + double_size_min; + mlxsw_sp_linear_size_params.size_granularity = MLXSW_SP_KVD_GRANULARITY; + mlxsw_sp_linear_size_params.unit = DEVLINK_RESOURCE_UNIT_ENTRY; + + /* Hash double part init */ + mlxsw_sp_hash_double_size_params.size_min = double_size_min; + mlxsw_sp_hash_double_size_params.size_max = kvd_size - single_size_min - + linear_size_min; + mlxsw_sp_hash_double_size_params.size_granularity = MLXSW_SP_KVD_GRANULARITY; + mlxsw_sp_hash_double_size_params.unit = DEVLINK_RESOURCE_UNIT_ENTRY; + + /* Hash single part init */ + mlxsw_sp_hash_single_size_params.size_min = single_size_min; + mlxsw_sp_hash_single_size_params.size_max = kvd_size - double_size_min - + linear_size_min; + mlxsw_sp_hash_single_size_params.size_granularity = MLXSW_SP_KVD_GRANULARITY; + mlxsw_sp_hash_single_size_params.unit = DEVLINK_RESOURCE_UNIT_ENTRY; +} + +static int mlxsw_sp_resources_register(struct mlxsw_core *mlxsw_core) +{ + struct devlink *devlink = priv_to_devlink(mlxsw_core); + u32 kvd_size, single_size, double_size, linear_size; + const struct mlxsw_config_profile *profile; + int err; + + profile = &mlxsw_sp_config_profile; + if (!MLXSW_CORE_RES_VALID(mlxsw_core, KVD_SIZE)) + return -EIO; + + mlxsw_sp_resource_size_params_prepare(mlxsw_core); + kvd_size = MLXSW_CORE_RES_GET(mlxsw_core, KVD_SIZE); + err = devlink_resource_register(devlink, MLXSW_SP_RESOURCE_NAME_KVD, + true, kvd_size, + MLXSW_SP_RESOURCE_KVD, + DEVLINK_RESOURCE_ID_PARENT_TOP, + &mlxsw_sp_kvd_size_params, + &mlxsw_sp_resource_kvd_ops); + if (err) + return err; + + linear_size = profile->kvd_linear_size; + err = devlink_resource_register(devlink, MLXSW_SP_RESOURCE_NAME_KVD_LINEAR, + false, linear_size, + MLXSW_SP_RESOURCE_KVD_LINEAR, + MLXSW_SP_RESOURCE_KVD, + &mlxsw_sp_linear_size_params, + &mlxsw_sp_resource_kvd_linear_ops); + if (err) + return err; + + double_size = kvd_size - linear_size; + double_size *= profile->kvd_hash_double_parts; + double_size /= profile->kvd_hash_double_parts + + profile->kvd_hash_single_parts; + double_size = rounddown(double_size, profile->kvd_hash_granularity); + err = devlink_resource_register(devlink, MLXSW_SP_RESOURCE_NAME_KVD_HASH_DOUBLE, + false, double_size, + MLXSW_SP_RESOURCE_KVD_HASH_DOUBLE, + MLXSW_SP_RESOURCE_KVD, + &mlxsw_sp_hash_double_size_params, + &mlxsw_sp_resource_kvd_hash_double_ops); + if (err) + return err; + + single_size = kvd_size - double_size - linear_size; + err = devlink_resource_register(devlink, MLXSW_SP_RESOURCE_NAME_KVD_HASH_SINGLE, + false, single_size, + MLXSW_SP_RESOURCE_KVD_HASH_SINGLE, + MLXSW_SP_RESOURCE_KVD, + &mlxsw_sp_hash_single_size_params, + &mlxsw_sp_resource_kvd_hash_single_ops); + if (err) + return err; + + return 0; +} + +static int mlxsw_sp_kvd_sizes_get(struct mlxsw_core *mlxsw_core, + const struct mlxsw_config_profile *profile, + u64 *p_single_size, u64 *p_double_size, + u64 *p_linear_size) +{ + struct devlink *devlink = priv_to_devlink(mlxsw_core); + u32 double_size; + int err; + + if (!MLXSW_CORE_RES_VALID(mlxsw_core, KVD_SINGLE_MIN_SIZE) || + !MLXSW_CORE_RES_VALID(mlxsw_core, KVD_DOUBLE_MIN_SIZE) || + !profile->used_kvd_split_data) + return -EIO; + + /* The hash part is what left of the kvd without the + * linear part. It is split to the single size and + * double size by the parts ratio from the profile. + * Both sizes must be a multiplications of the + * granularity from the profile. In case the user + * provided the sizes they are obtained via devlink. + */ + err = devlink_resource_size_get(devlink, + MLXSW_SP_RESOURCE_KVD_LINEAR, + p_linear_size); + if (err) + *p_linear_size = profile->kvd_linear_size; + + err = devlink_resource_size_get(devlink, + MLXSW_SP_RESOURCE_KVD_HASH_DOUBLE, + p_double_size); + if (err) { + double_size = MLXSW_CORE_RES_GET(mlxsw_core, KVD_SIZE) - + *p_linear_size; + double_size *= profile->kvd_hash_double_parts; + double_size /= profile->kvd_hash_double_parts + + profile->kvd_hash_single_parts; + *p_double_size = rounddown(double_size, + profile->kvd_hash_granularity); + } + + err = devlink_resource_size_get(devlink, + MLXSW_SP_RESOURCE_KVD_HASH_SINGLE, + p_single_size); + if (err) + *p_single_size = MLXSW_CORE_RES_GET(mlxsw_core, KVD_SIZE) - + *p_double_size - *p_linear_size; + + /* Check results are legal. */ + if (*p_single_size < MLXSW_CORE_RES_GET(mlxsw_core, KVD_SINGLE_MIN_SIZE) || + *p_double_size < MLXSW_CORE_RES_GET(mlxsw_core, KVD_DOUBLE_MIN_SIZE) || + MLXSW_CORE_RES_GET(mlxsw_core, KVD_SIZE) < *p_linear_size) + return -EIO; + + return 0; +} + static struct mlxsw_driver mlxsw_sp_driver = { .kind = mlxsw_sp_driver_name, .priv_size = sizeof(struct mlxsw_sp), @@ -4010,6 +4257,8 @@ static struct mlxsw_driver mlxsw_sp_driver = { .sb_occ_port_pool_get = mlxsw_sp_sb_occ_port_pool_get, .sb_occ_tc_port_bind_get = mlxsw_sp_sb_occ_tc_port_bind_get, .txhdr_construct = mlxsw_sp_txhdr_construct, + .resources_register = mlxsw_sp_resources_register, + .kvd_sizes_get = mlxsw_sp_kvd_sizes_get, .txhdr_len = MLXSW_TXHDR_LEN, .profile = &mlxsw_sp_config_profile, }; diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h index 16f8fbda0891..237cad373dbe 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h @@ -66,6 +66,18 @@ #define MLXSW_SP_KVD_LINEAR_SIZE 98304 /* entries */ #define MLXSW_SP_KVD_GRANULARITY 128 +#define MLXSW_SP_RESOURCE_NAME_KVD "kvd" +#define MLXSW_SP_RESOURCE_NAME_KVD_LINEAR "linear" +#define MLXSW_SP_RESOURCE_NAME_KVD_HASH_SINGLE "hash_single" +#define MLXSW_SP_RESOURCE_NAME_KVD_HASH_DOUBLE "hash_double" + +enum mlxsw_sp_resource_id { + MLXSW_SP_RESOURCE_KVD, + MLXSW_SP_RESOURCE_KVD_LINEAR, + MLXSW_SP_RESOURCE_KVD_HASH_SINGLE, + MLXSW_SP_RESOURCE_KVD_HASH_DOUBLE, +}; + struct mlxsw_sp_port; struct mlxsw_sp_rif; @@ -436,6 +448,7 @@ void mlxsw_sp_kvdl_free(struct mlxsw_sp *mlxsw_sp, int entry_index); int mlxsw_sp_kvdl_alloc_size_query(struct mlxsw_sp *mlxsw_sp, unsigned int entry_count, unsigned int *p_alloc_size); +u64 mlxsw_sp_kvdl_occ_get(const struct mlxsw_sp *mlxsw_sp); struct mlxsw_sp_acl_rule_info { unsigned int priority; diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c index 96fdba78acab..f56fa18d6b26 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c @@ -771,14 +771,33 @@ static struct devlink_dpipe_table_ops mlxsw_sp_host4_ops = { .size_get = mlxsw_sp_dpipe_table_host4_size_get, }; +#define MLXSW_SP_DPIPE_TABLE_RESOURCE_UNIT_HOST4 1 + static int mlxsw_sp_dpipe_host4_table_init(struct mlxsw_sp *mlxsw_sp) { struct devlink *devlink = priv_to_devlink(mlxsw_sp->core); + int err; - return devlink_dpipe_table_register(devlink, - MLXSW_SP_DPIPE_TABLE_NAME_HOST4, - &mlxsw_sp_host4_ops, - mlxsw_sp, false); + err = devlink_dpipe_table_register(devlink, + MLXSW_SP_DPIPE_TABLE_NAME_HOST4, + &mlxsw_sp_host4_ops, + mlxsw_sp, false); + if (err) + return err; + + err = devlink_dpipe_table_resource_set(devlink, + MLXSW_SP_DPIPE_TABLE_NAME_HOST4, + MLXSW_SP_RESOURCE_KVD_HASH_SINGLE, + MLXSW_SP_DPIPE_TABLE_RESOURCE_UNIT_HOST4); + if (err) + goto err_resource_set; + + return 0; + +err_resource_set: + devlink_dpipe_table_unregister(devlink, + MLXSW_SP_DPIPE_TABLE_NAME_HOST4); + return err; } static void mlxsw_sp_dpipe_host4_table_fini(struct mlxsw_sp *mlxsw_sp) @@ -829,14 +848,33 @@ static struct devlink_dpipe_table_ops mlxsw_sp_host6_ops = { .size_get = mlxsw_sp_dpipe_table_host6_size_get, }; +#define MLXSW_SP_DPIPE_TABLE_RESOURCE_UNIT_HOST6 2 + static int mlxsw_sp_dpipe_host6_table_init(struct mlxsw_sp *mlxsw_sp) { struct devlink *devlink = priv_to_devlink(mlxsw_sp->core); + int err; - return devlink_dpipe_table_register(devlink, - MLXSW_SP_DPIPE_TABLE_NAME_HOST6, - &mlxsw_sp_host6_ops, - mlxsw_sp, false); + err = devlink_dpipe_table_register(devlink, + MLXSW_SP_DPIPE_TABLE_NAME_HOST6, + &mlxsw_sp_host6_ops, + mlxsw_sp, false); + if (err) + return err; + + err = devlink_dpipe_table_resource_set(devlink, + MLXSW_SP_DPIPE_TABLE_NAME_HOST6, + MLXSW_SP_RESOURCE_KVD_HASH_DOUBLE, + MLXSW_SP_DPIPE_TABLE_RESOURCE_UNIT_HOST6); + if (err) + goto err_resource_set; + + return 0; + +err_resource_set: + devlink_dpipe_table_unregister(devlink, + MLXSW_SP_DPIPE_TABLE_NAME_HOST6); + return err; } static void mlxsw_sp_dpipe_host6_table_fini(struct mlxsw_sp *mlxsw_sp) @@ -1213,14 +1251,33 @@ static struct devlink_dpipe_table_ops mlxsw_sp_dpipe_table_adj_ops = { .size_get = mlxsw_sp_dpipe_table_adj_size_get, }; +#define MLXSW_SP_DPIPE_TABLE_RESOURCE_UNIT_ADJ 1 + static int mlxsw_sp_dpipe_adj_table_init(struct mlxsw_sp *mlxsw_sp) { struct devlink *devlink = priv_to_devlink(mlxsw_sp->core); + int err; - return devlink_dpipe_table_register(devlink, - MLXSW_SP_DPIPE_TABLE_NAME_ADJ, - &mlxsw_sp_dpipe_table_adj_ops, - mlxsw_sp, false); + err = devlink_dpipe_table_register(devlink, + MLXSW_SP_DPIPE_TABLE_NAME_ADJ, + &mlxsw_sp_dpipe_table_adj_ops, + mlxsw_sp, false); + if (err) + return err; + + err = devlink_dpipe_table_resource_set(devlink, + MLXSW_SP_DPIPE_TABLE_NAME_ADJ, + MLXSW_SP_RESOURCE_KVD_LINEAR, + MLXSW_SP_DPIPE_TABLE_RESOURCE_UNIT_ADJ); + if (err) + goto err_resource_set; + + return 0; + +err_resource_set: + devlink_dpipe_table_unregister(devlink, + MLXSW_SP_DPIPE_TABLE_NAME_ADJ); + return err; } static void mlxsw_sp_dpipe_adj_table_fini(struct mlxsw_sp *mlxsw_sp) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c index 310c38247b5c..cfacc176a1bd 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_kvdl.c @@ -286,6 +286,32 @@ static void mlxsw_sp_kvdl_parts_fini(struct mlxsw_sp *mlxsw_sp) mlxsw_sp_kvdl_part_fini(mlxsw_sp, i); } +u64 mlxsw_sp_kvdl_part_occ(struct mlxsw_sp_kvdl_part *part) +{ + unsigned int nr_entries; + int bit = -1; + u64 occ = 0; + + nr_entries = (part->info->end_index - + part->info->start_index + 1) / + part->info->alloc_size; + while ((bit = find_next_bit(part->usage, nr_entries, bit + 1)) + < nr_entries) + occ += part->info->alloc_size; + return occ; +} + +u64 mlxsw_sp_kvdl_occ_get(const struct mlxsw_sp *mlxsw_sp) +{ + struct mlxsw_sp_kvdl_part *part; + u64 occ = 0; + + list_for_each_entry(part, &mlxsw_sp->kvdl->parts_list, list) + occ += mlxsw_sp_kvdl_part_occ(part); + + return occ; +} + int mlxsw_sp_kvdl_init(struct mlxsw_sp *mlxsw_sp) { struct mlxsw_sp_kvdl *kvdl; diff --git a/include/net/devlink.h b/include/net/devlink.h index b9654e133599..6545b03e97f7 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -26,10 +26,12 @@ struct devlink { struct list_head port_list; struct list_head sb_list; struct list_head dpipe_table_list; + struct list_head resource_list; struct devlink_dpipe_headers *dpipe_headers; const struct devlink_ops *ops; struct device *dev; possible_net_t _net; + struct mutex lock; char priv[0] __aligned(NETDEV_ALIGN); }; @@ -181,6 +183,9 @@ struct devlink_dpipe_table_ops; * @counters_enabled: indicates if counters are active * @counter_control_extern: indicates if counter control is in dpipe or * external tool + * @resource_valid: Indicate that the resource id is valid + * @resource_id: relative resource this table is related to + * @resource_units: number of resource's unit consumed per table's entry * @table_ops: table operations * @rcu: rcu */ @@ -190,6 +195,9 @@ struct devlink_dpipe_table { const char *name; bool counters_enabled; bool counter_control_extern; + bool resource_valid; + u64 resource_id; + u64 resource_units; struct devlink_dpipe_table_ops *table_ops; struct rcu_head rcu; }; @@ -223,7 +231,63 @@ struct devlink_dpipe_headers { unsigned int headers_count; }; +/** + * struct devlink_resource_ops - resource ops + * @occ_get: get the occupied size + * @size_validate: validate the size of the resource before update, reload + * is needed for changes to take place + */ +struct devlink_resource_ops { + u64 (*occ_get)(struct devlink *devlink); + int (*size_validate)(struct devlink *devlink, u64 size, + struct netlink_ext_ack *extack); +}; + +/** + * struct devlink_resource_size_params - resource's size parameters + * @size_min: minimum size which can be set + * @size_max: maximum size which can be set + * @size_granularity: size granularity + * @size_unit: resource's basic unit + */ +struct devlink_resource_size_params { + u64 size_min; + u64 size_max; + u64 size_granularity; + enum devlink_resource_unit unit; +}; + +/** + * struct devlink_resource - devlink resource + * @name: name of the resource + * @id: id, per devlink instance + * @size: size of the resource + * @size_new: updated size of the resource, reload is needed + * @size_valid: valid in case the total size of the resource is valid + * including its children + * @parent: parent resource + * @size_params: size parameters + * @list: parent list + * @resource_list: list of child resources + * @resource_ops: resource ops + */ +struct devlink_resource { + const char *name; + u64 id; + u64 size; + u64 size_new; + bool size_valid; + struct devlink_resource *parent; + struct devlink_resource_size_params *size_params; + struct list_head list; + struct list_head resource_list; + const struct devlink_resource_ops *resource_ops; +}; + +#define DEVLINK_RESOURCE_ID_PARENT_TOP 0 + struct devlink_ops { + int (*reload)(struct devlink *devlink); int (*port_type_set)(struct devlink_port *devlink_port, enum devlink_port_type port_type); int (*port_split)(struct devlink *devlink, unsigned int port_index, @@ -332,6 +396,23 @@ extern struct devlink_dpipe_header devlink_dpipe_header_ethernet; extern struct devlink_dpipe_header devlink_dpipe_header_ipv4; extern struct devlink_dpipe_header devlink_dpipe_header_ipv6; +int devlink_resource_register(struct devlink *devlink, + const char *resource_name, + bool top_hierarchy, + u64 resource_size, + u64 resource_id, + u64 parent_resource_id, + struct devlink_resource_size_params *size_params, + const struct devlink_resource_ops *resource_ops); +void devlink_resources_unregister(struct devlink *devlink, + struct devlink_resource *resource); +int devlink_resource_size_get(struct devlink *devlink, + u64 resource_id, + u64 *p_resource_size); +int devlink_dpipe_table_resource_set(struct devlink *devlink, + const char *table_name, u64 resource_id, + u64 resource_units); + #else static inline struct devlink *devlink_alloc(const struct devlink_ops *ops, @@ -468,6 +549,40 @@ devlink_dpipe_match_put(struct sk_buff *skb, return 0; } +static inline int +devlink_resource_register(struct devlink *devlink, + const char *resource_name, + bool top_hierarchy, + u64 resource_size, + u64 resource_id, + u64 parent_resource_id, + struct devlink_resource_size_params *size_params, + const struct devlink_resource_ops *resource_ops) +{ + return 0; +} + +static inline void +devlink_resources_unregister(struct devlink *devlink, + struct devlink_resource *resource) +{ +} + +static inline int +devlink_resource_size_get(struct devlink *devlink, u64 resource_id, + u64 *p_resource_size) +{ + return -EOPNOTSUPP; +} + +static inline int +devlink_dpipe_table_resource_set(struct devlink *devlink, + const char *table_name, u64 resource_id, + u64 resource_units) +{ + return -EOPNOTSUPP; +} + #endif #endif /* _NET_DEVLINK_H_ */ diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h index 6665df69e26a..1df65a4c2044 100644 --- a/include/uapi/linux/devlink.h +++ b/include/uapi/linux/devlink.h @@ -70,6 +70,13 @@ enum devlink_command { DEVLINK_CMD_DPIPE_ENTRIES_GET, DEVLINK_CMD_DPIPE_HEADERS_GET, DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET, + DEVLINK_CMD_RESOURCE_SET, + DEVLINK_CMD_RESOURCE_DUMP, + + /* Hot driver reload, makes configuration changes take place. The + * devlink instance is not released during the process. + */ + DEVLINK_CMD_RELOAD, /* add new commands above here */ __DEVLINK_CMD_MAX, @@ -202,6 +209,20 @@ enum devlink_attr { DEVLINK_ATTR_PAD, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, /* u8 */ + DEVLINK_ATTR_RESOURCE_LIST, /* nested */ + DEVLINK_ATTR_RESOURCE, /* nested */ + DEVLINK_ATTR_RESOURCE_NAME, /* string */ + DEVLINK_ATTR_RESOURCE_ID, /* u64 */ + DEVLINK_ATTR_RESOURCE_SIZE, /* u64 */ + DEVLINK_ATTR_RESOURCE_SIZE_NEW, /* u64 */ + DEVLINK_ATTR_RESOURCE_SIZE_VALID, /* u8 */ + DEVLINK_ATTR_RESOURCE_SIZE_MIN, /* u64 */ + DEVLINK_ATTR_RESOURCE_SIZE_MAX, /* u64 */ + DEVLINK_ATTR_RESOURCE_SIZE_GRAN, /* u64 */ + DEVLINK_ATTR_RESOURCE_UNIT, /* u8 */ + DEVLINK_ATTR_RESOURCE_OCC, /* u64 */ + DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID, /* u64 */ + DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,/* u64 */ /* add new attributes above here, update the policy in devlink.c */ @@ -245,4 +266,8 @@ enum devlink_dpipe_header_id { DEVLINK_DPIPE_HEADER_IPV6, }; +enum devlink_resource_unit { + DEVLINK_RESOURCE_UNIT_ENTRY, +}; + #endif /* _UAPI_LINUX_DEVLINK_H_ */ diff --git a/net/core/devlink.c b/net/core/devlink.c index 7d430c1d9c3e..dd7d6dd07bfb 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -92,12 +92,6 @@ static LIST_HEAD(devlink_list); */ static DEFINE_MUTEX(devlink_mutex); -/* devlink_port_mutex - * - * Shared lock to guard lists of ports in all devlink devices. - */ -static DEFINE_MUTEX(devlink_port_mutex); - static struct net *devlink_net(const struct devlink *devlink) { return read_pnet(&devlink->_net); @@ -335,15 +329,18 @@ devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb, #define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0) #define DEVLINK_NL_FLAG_NEED_PORT BIT(1) #define DEVLINK_NL_FLAG_NEED_SB BIT(2) -#define DEVLINK_NL_FLAG_LOCK_PORTS BIT(3) - /* port is not needed but we need to ensure they don't - * change in the middle of command - */ + +/* The per devlink instance lock is taken by default in the pre-doit + * operation, yet several commands do not require this. The global + * devlink lock is taken and protects from disruption by user-calls. + */ +#define DEVLINK_NL_FLAG_NO_LOCK BIT(3) static int devlink_nl_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, struct genl_info *info) { struct devlink *devlink; + int err; mutex_lock(&devlink_mutex); devlink = devlink_get_from_info(info); @@ -351,44 +348,47 @@ static int devlink_nl_pre_doit(const struct genl_ops *ops, mutex_unlock(&devlink_mutex); return PTR_ERR(devlink); } + if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) + mutex_lock(&devlink->lock); if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) { info->user_ptr[0] = devlink; } else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) { struct devlink_port *devlink_port; - mutex_lock(&devlink_port_mutex); devlink_port = devlink_port_get_from_info(devlink, info); if (IS_ERR(devlink_port)) { - mutex_unlock(&devlink_port_mutex); - mutex_unlock(&devlink_mutex); - return PTR_ERR(devlink_port); + err = PTR_ERR(devlink_port); + goto unlock; } info->user_ptr[0] = devlink_port; } - if (ops->internal_flags & DEVLINK_NL_FLAG_LOCK_PORTS) { - mutex_lock(&devlink_port_mutex); - } if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_SB) { struct devlink_sb *devlink_sb; devlink_sb = devlink_sb_get_from_info(devlink, info); if (IS_ERR(devlink_sb)) { - if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) - mutex_unlock(&devlink_port_mutex); - mutex_unlock(&devlink_mutex); - return PTR_ERR(devlink_sb); + err = PTR_ERR(devlink_sb); + goto unlock; } info->user_ptr[1] = devlink_sb; } return 0; + +unlock: + if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) + mutex_unlock(&devlink->lock); + mutex_unlock(&devlink_mutex); + return err; } static void devlink_nl_post_doit(const struct genl_ops *ops, struct sk_buff *skb, struct genl_info *info) { - if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT || - ops->internal_flags & DEVLINK_NL_FLAG_LOCK_PORTS) - mutex_unlock(&devlink_port_mutex); + struct devlink *devlink; + + devlink = devlink_get_from_info(info); + if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) + mutex_unlock(&devlink->lock); mutex_unlock(&devlink_mutex); } @@ -614,10 +614,10 @@ static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg, int err; mutex_lock(&devlink_mutex); - mutex_lock(&devlink_port_mutex); list_for_each_entry(devlink, &devlink_list, list) { if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) continue; + mutex_lock(&devlink->lock); list_for_each_entry(devlink_port, &devlink->port_list, list) { if (idx < start) { idx++; @@ -628,13 +628,15 @@ static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, NLM_F_MULTI); - if (err) + if (err) { + mutex_unlock(&devlink->lock); goto out; + } idx++; } + mutex_unlock(&devlink->lock); } out: - mutex_unlock(&devlink_port_mutex); mutex_unlock(&devlink_mutex); cb->args[0] = idx; @@ -801,6 +803,7 @@ static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg, list_for_each_entry(devlink, &devlink_list, list) { if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) continue; + mutex_lock(&devlink->lock); list_for_each_entry(devlink_sb, &devlink->sb_list, list) { if (idx < start) { idx++; @@ -811,10 +814,13 @@ static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, NLM_F_MULTI); - if (err) + if (err) { + mutex_unlock(&devlink->lock); goto out; + } idx++; } + mutex_unlock(&devlink->lock); } out: mutex_unlock(&devlink_mutex); @@ -935,14 +941,18 @@ static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg, if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) || !devlink->ops || !devlink->ops->sb_pool_get) continue; + mutex_lock(&devlink->lock); list_for_each_entry(devlink_sb, &devlink->sb_list, list) { err = __sb_pool_get_dumpit(msg, start, &idx, devlink, devlink_sb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq); - if (err && err != -EOPNOTSUPP) + if (err && err != -EOPNOTSUPP) { + mutex_unlock(&devlink->lock); goto out; + } } + mutex_unlock(&devlink->lock); } out: mutex_unlock(&devlink_mutex); @@ -1123,22 +1133,24 @@ static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg, int err; mutex_lock(&devlink_mutex); - mutex_lock(&devlink_port_mutex); list_for_each_entry(devlink, &devlink_list, list) { if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) || !devlink->ops || !devlink->ops->sb_port_pool_get) continue; + mutex_lock(&devlink->lock); list_for_each_entry(devlink_sb, &devlink->sb_list, list) { err = __sb_port_pool_get_dumpit(msg, start, &idx, devlink, devlink_sb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq); - if (err && err != -EOPNOTSUPP) + if (err && err != -EOPNOTSUPP) { + mutex_unlock(&devlink->lock); goto out; + } } + mutex_unlock(&devlink->lock); } out: - mutex_unlock(&devlink_port_mutex); mutex_unlock(&devlink_mutex); cb->args[0] = idx; @@ -1347,23 +1359,26 @@ devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg, int err; mutex_lock(&devlink_mutex); - mutex_lock(&devlink_port_mutex); list_for_each_entry(devlink, &devlink_list, list) { if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) || !devlink->ops || !devlink->ops->sb_tc_pool_bind_get) continue; + + mutex_lock(&devlink->lock); list_for_each_entry(devlink_sb, &devlink->sb_list, list) { err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx, devlink, devlink_sb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq); - if (err && err != -EOPNOTSUPP) + if (err && err != -EOPNOTSUPP) { + mutex_unlock(&devlink->lock); goto out; + } } + mutex_unlock(&devlink->lock); } out: - mutex_unlock(&devlink_port_mutex); mutex_unlock(&devlink_mutex); cb->args[0] = idx; @@ -1679,6 +1694,12 @@ static int devlink_dpipe_table_put(struct sk_buff *skb, table->counters_enabled)) goto nla_put_failure; + if (table->resource_valid) { + nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID, + table->resource_id, DEVLINK_ATTR_PAD); + nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS, + table->resource_units, DEVLINK_ATTR_PAD); + } if (devlink_dpipe_matches_put(table, skb)) goto nla_put_failure; @@ -2273,6 +2294,272 @@ static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb, counters_enable); } +struct devlink_resource * +devlink_resource_find(struct devlink *devlink, + struct devlink_resource *resource, u64 resource_id) +{ + struct list_head *resource_list; + + if (resource) + resource_list = &resource->resource_list; + else + resource_list = &devlink->resource_list; + + list_for_each_entry(resource, resource_list, list) { + struct devlink_resource *child_resource; + + if (resource->id == resource_id) + return resource; + + child_resource = devlink_resource_find(devlink, resource, + resource_id); + if (child_resource) + return child_resource; + } + return NULL; +} + +void devlink_resource_validate_children(struct devlink_resource *resource) +{ + struct devlink_resource *child_resource; + bool size_valid = true; + u64 parts_size = 0; + + if (list_empty(&resource->resource_list)) + goto out; + + list_for_each_entry(child_resource, &resource->resource_list, list) + parts_size += child_resource->size_new; + + if (parts_size > resource->size) + size_valid = false; +out: + resource->size_valid = size_valid; +} + +static int devlink_nl_cmd_resource_set(struct sk_buff *skb, + struct genl_info *info) +{ + struct devlink *devlink = info->user_ptr[0]; + struct devlink_resource *resource; + u64 resource_id; + u64 size; + int err; + + if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] || + !info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]) + return -EINVAL; + resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]); + + resource = devlink_resource_find(devlink, NULL, resource_id); + if (!resource) + return -EINVAL; + + if (!resource->resource_ops->size_validate) + return -EINVAL; + + size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]); + err = resource->resource_ops->size_validate(devlink, size, + info->extack); + if (err) + return err; + + resource->size_new = size; + devlink_resource_validate_children(resource); + if (resource->parent) + devlink_resource_validate_children(resource->parent); + return 0; +} + +static void +devlink_resource_size_params_put(struct devlink_resource *resource, + struct sk_buff *skb) +{ + struct devlink_resource_size_params *size_params; + + size_params = resource->size_params; + nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN, + size_params->size_granularity, DEVLINK_ATTR_PAD); + nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX, + size_params->size_max, DEVLINK_ATTR_PAD); + nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN, + size_params->size_min, DEVLINK_ATTR_PAD); + nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit); +} + +static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb, + struct devlink_resource *resource) +{ + struct devlink_resource *child_resource; + struct nlattr *child_resource_attr; + struct nlattr *resource_attr; + + resource_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE); + if (!resource_attr) + return -EMSGSIZE; + + if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) || + nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size, + DEVLINK_ATTR_PAD) || + nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id, + DEVLINK_ATTR_PAD)) + goto nla_put_failure; + if (resource->size != resource->size_new) + nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW, + resource->size_new, DEVLINK_ATTR_PAD); + if (resource->resource_ops && resource->resource_ops->occ_get) + nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC, + resource->resource_ops->occ_get(devlink), + DEVLINK_ATTR_PAD); + devlink_resource_size_params_put(resource, skb); + if (list_empty(&resource->resource_list)) + goto out; + + if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID, + resource->size_valid)) + goto nla_put_failure; + + child_resource_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE_LIST); + if (!child_resource_attr) + goto nla_put_failure; + + list_for_each_entry(child_resource, &resource->resource_list, list) { + if (devlink_resource_put(devlink, skb, child_resource)) + goto resource_put_failure; + } + + nla_nest_end(skb, child_resource_attr); +out: + nla_nest_end(skb, resource_attr); + return 0; + +resource_put_failure: + nla_nest_cancel(skb, child_resource_attr); +nla_put_failure: + nla_nest_cancel(skb, resource_attr); + return -EMSGSIZE; +} + +static int devlink_resource_fill(struct genl_info *info, + enum devlink_command cmd, int flags) +{ + struct devlink *devlink = info->user_ptr[0]; + struct devlink_resource *resource; + struct nlattr *resources_attr; + struct sk_buff *skb = NULL; + struct nlmsghdr *nlh; + bool incomplete; + void *hdr; + int i; + int err; + + resource = list_first_entry(&devlink->resource_list, + struct devlink_resource, list); +start_again: + err = devlink_dpipe_send_and_alloc_skb(&skb, info); + if (err) + return err; + + hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, + &devlink_nl_family, NLM_F_MULTI, cmd); + if (!hdr) { + nlmsg_free(skb); + return -EMSGSIZE; + } + + if (devlink_nl_put_handle(skb, devlink)) + goto nla_put_failure; + + resources_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE_LIST); + if (!resources_attr) + goto nla_put_failure; + + incomplete = false; + i = 0; + list_for_each_entry_from(resource, &devlink->resource_list, list) { + err = devlink_resource_put(devlink, skb, resource); + if (err) { + if (!i) + goto err_resource_put; + incomplete = true; + break; + } + i++; + } + nla_nest_end(skb, resources_attr); + genlmsg_end(skb, hdr); + if (incomplete) + goto start_again; +send_done: + nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq, + NLMSG_DONE, 0, flags | NLM_F_MULTI); + if (!nlh) { + err = devlink_dpipe_send_and_alloc_skb(&skb, info); + if (err) + goto err_skb_send_alloc; + goto send_done; + } + return genlmsg_reply(skb, info); + +nla_put_failure: + err = -EMSGSIZE; +err_resource_put: +err_skb_send_alloc: + genlmsg_cancel(skb, hdr); + nlmsg_free(skb); + return err; +} + +static int devlink_nl_cmd_resource_dump(struct sk_buff *skb, + struct genl_info *info) +{ + struct devlink *devlink = info->user_ptr[0]; + + if (list_empty(&devlink->resource_list)) + return -EOPNOTSUPP; + + return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0); +} + +static int +devlink_resources_validate(struct devlink *devlink, + struct devlink_resource *resource, + struct genl_info *info) +{ + struct list_head *resource_list; + int err = 0; + + if (resource) + resource_list = &resource->resource_list; + else + resource_list = &devlink->resource_list; + + list_for_each_entry(resource, resource_list, list) { + if (!resource->size_valid) + return -EINVAL; + err = devlink_resources_validate(devlink, resource, info); + if (err) + return err; + } + return err; +} + +static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info) +{ + struct devlink *devlink = info->user_ptr[0]; + int err; + + if (!devlink->ops->reload) + return -EOPNOTSUPP; + + err = devlink_resources_validate(devlink, NULL, info); + if (err) { + NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed"); + return err; + } + return devlink->ops->reload(devlink); +} + static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = { [DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING }, @@ -2291,6 +2578,8 @@ static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = { [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 }, [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 }, + [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64}, + [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64}, }; static const struct genl_ops devlink_nl_ops[] = { @@ -2322,14 +2611,16 @@ static const struct genl_ops devlink_nl_ops[] = { .doit = devlink_nl_cmd_port_split_doit, .policy = devlink_nl_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, + .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | + DEVLINK_NL_FLAG_NO_LOCK, }, { .cmd = DEVLINK_CMD_PORT_UNSPLIT, .doit = devlink_nl_cmd_port_unsplit_doit, .policy = devlink_nl_policy, .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, + .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | + DEVLINK_NL_FLAG_NO_LOCK, }, { .cmd = DEVLINK_CMD_SB_GET, @@ -2397,8 +2688,7 @@ static const struct genl_ops devlink_nl_ops[] = { .policy = devlink_nl_policy, .flags = GENL_ADMIN_PERM, .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | - DEVLINK_NL_FLAG_NEED_SB | - DEVLINK_NL_FLAG_LOCK_PORTS, + DEVLINK_NL_FLAG_NEED_SB, }, { .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR, @@ -2406,8 +2696,7 @@ static const struct genl_ops devlink_nl_ops[] = { .policy = devlink_nl_policy, .flags = GENL_ADMIN_PERM, .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | - DEVLINK_NL_FLAG_NEED_SB | - DEVLINK_NL_FLAG_LOCK_PORTS, + DEVLINK_NL_FLAG_NEED_SB, }, { .cmd = DEVLINK_CMD_ESWITCH_GET, @@ -2451,6 +2740,28 @@ static const struct genl_ops devlink_nl_ops[] = { .flags = GENL_ADMIN_PERM, .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, }, + { + .cmd = DEVLINK_CMD_RESOURCE_SET, + .doit = devlink_nl_cmd_resource_set, + .policy = devlink_nl_policy, + .flags = GENL_ADMIN_PERM, + .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, + }, + { + .cmd = DEVLINK_CMD_RESOURCE_DUMP, + .doit = devlink_nl_cmd_resource_dump, + .policy = devlink_nl_policy, + .flags = GENL_ADMIN_PERM, + .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, + }, + { + .cmd = DEVLINK_CMD_RELOAD, + .doit = devlink_nl_cmd_reload, + .policy = devlink_nl_policy, + .flags = GENL_ADMIN_PERM, + .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | + DEVLINK_NL_FLAG_NO_LOCK, + }, }; static struct genl_family devlink_nl_family __ro_after_init = { @@ -2488,6 +2799,8 @@ struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size) INIT_LIST_HEAD(&devlink->port_list); INIT_LIST_HEAD(&devlink->sb_list); INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list); + INIT_LIST_HEAD(&devlink->resource_list); + mutex_init(&devlink->lock); return devlink; } EXPORT_SYMBOL_GPL(devlink_alloc); @@ -2550,16 +2863,16 @@ int devlink_port_register(struct devlink *devlink, struct devlink_port *devlink_port, unsigned int port_index) { - mutex_lock(&devlink_port_mutex); + mutex_lock(&devlink->lock); if (devlink_port_index_exists(devlink, port_index)) { - mutex_unlock(&devlink_port_mutex); + mutex_unlock(&devlink->lock); return -EEXIST; } devlink_port->devlink = devlink; devlink_port->index = port_index; devlink_port->registered = true; list_add_tail(&devlink_port->list, &devlink->port_list); - mutex_unlock(&devlink_port_mutex); + mutex_unlock(&devlink->lock); devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); return 0; } @@ -2572,10 +2885,12 @@ EXPORT_SYMBOL_GPL(devlink_port_register); */ void devlink_port_unregister(struct devlink_port *devlink_port) { + struct devlink *devlink = devlink_port->devlink; + devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL); - mutex_lock(&devlink_port_mutex); + mutex_lock(&devlink->lock); list_del(&devlink_port->list); - mutex_unlock(&devlink_port_mutex); + mutex_unlock(&devlink->lock); } EXPORT_SYMBOL_GPL(devlink_port_unregister); @@ -2651,7 +2966,7 @@ int devlink_sb_register(struct devlink *devlink, unsigned int sb_index, struct devlink_sb *devlink_sb; int err = 0; - mutex_lock(&devlink_mutex); + mutex_lock(&devlink->lock); if (devlink_sb_index_exists(devlink, sb_index)) { err = -EEXIST; goto unlock; @@ -2670,7 +2985,7 @@ int devlink_sb_register(struct devlink *devlink, unsigned int sb_index, devlink_sb->egress_tc_count = egress_tc_count; list_add_tail(&devlink_sb->list, &devlink->sb_list); unlock: - mutex_unlock(&devlink_mutex); + mutex_unlock(&devlink->lock); return err; } EXPORT_SYMBOL_GPL(devlink_sb_register); @@ -2679,11 +2994,11 @@ void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index) { struct devlink_sb *devlink_sb; - mutex_lock(&devlink_mutex); + mutex_lock(&devlink->lock); devlink_sb = devlink_sb_get_by_index(devlink, sb_index); WARN_ON(!devlink_sb); list_del(&devlink_sb->list); - mutex_unlock(&devlink_mutex); + mutex_unlock(&devlink->lock); kfree(devlink_sb); } EXPORT_SYMBOL_GPL(devlink_sb_unregister); @@ -2699,9 +3014,9 @@ EXPORT_SYMBOL_GPL(devlink_sb_unregister); int devlink_dpipe_headers_register(struct devlink *devlink, struct devlink_dpipe_headers *dpipe_headers) { - mutex_lock(&devlink_mutex); + mutex_lock(&devlink->lock); devlink->dpipe_headers = dpipe_headers; - mutex_unlock(&devlink_mutex); + mutex_unlock(&devlink->lock); return 0; } EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register); @@ -2715,9 +3030,9 @@ EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register); */ void devlink_dpipe_headers_unregister(struct devlink *devlink) { - mutex_lock(&devlink_mutex); + mutex_lock(&devlink->lock); devlink->dpipe_headers = NULL; - mutex_unlock(&devlink_mutex); + mutex_unlock(&devlink->lock); } EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister); @@ -2783,9 +3098,9 @@ int devlink_dpipe_table_register(struct devlink *devlink, table->priv = priv; table->counter_control_extern = counter_control_extern; - mutex_lock(&devlink_mutex); + mutex_lock(&devlink->lock); list_add_tail_rcu(&table->list, &devlink->dpipe_table_list); - mutex_unlock(&devlink_mutex); + mutex_unlock(&devlink->lock); return 0; } EXPORT_SYMBOL_GPL(devlink_dpipe_table_register); @@ -2801,20 +3116,181 @@ void devlink_dpipe_table_unregister(struct devlink *devlink, { struct devlink_dpipe_table *table; - mutex_lock(&devlink_mutex); + mutex_lock(&devlink->lock); table = devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name); if (!table) goto unlock; list_del_rcu(&table->list); - mutex_unlock(&devlink_mutex); + mutex_unlock(&devlink->lock); kfree_rcu(table, rcu); return; unlock: - mutex_unlock(&devlink_mutex); + mutex_unlock(&devlink->lock); } EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister); +/** + * devlink_resource_register - devlink resource register + * + * @devlink: devlink + * @resource_name: resource's name + * @top_hierarchy: top hierarchy + * @reload_required: reload is required for new configuration to + * apply + * @resource_size: resource's size + * @resource_id: resource's id + * @parent_reosurce_id: resource's parent id + * @size params: size parameters + * @resource_ops: resource ops + */ +int devlink_resource_register(struct devlink *devlink, + const char *resource_name, + bool top_hierarchy, + u64 resource_size, + u64 resource_id, + u64 parent_resource_id, + struct devlink_resource_size_params *size_params, + const struct devlink_resource_ops *resource_ops) +{ + struct devlink_resource *resource; + struct list_head *resource_list; + int err = 0; + + mutex_lock(&devlink->lock); + resource = devlink_resource_find(devlink, NULL, resource_id); + if (resource) { + err = -EINVAL; + goto out; + } + + resource = kzalloc(sizeof(*resource), GFP_KERNEL); + if (!resource) { + err = -ENOMEM; + goto out; + } + + if (top_hierarchy) { + resource_list = &devlink->resource_list; + } else { + struct devlink_resource *parent_resource; + + parent_resource = devlink_resource_find(devlink, NULL, + parent_resource_id); + if (parent_resource) { + resource_list = &parent_resource->resource_list; + resource->parent = parent_resource; + } else { + err = -EINVAL; + goto out; + } + } + + resource->name = resource_name; + resource->size = resource_size; + resource->size_new = resource_size; + resource->id = resource_id; + resource->resource_ops = resource_ops; + resource->size_valid = true; + resource->size_params = size_params; + INIT_LIST_HEAD(&resource->resource_list); + list_add_tail(&resource->list, resource_list); +out: + mutex_unlock(&devlink->lock); + return err; +} +EXPORT_SYMBOL_GPL(devlink_resource_register); + +/** + * devlink_resources_unregister - free all resources + * + * @devlink: devlink + * @resource: resource + */ +void devlink_resources_unregister(struct devlink *devlink, + struct devlink_resource *resource) +{ + struct devlink_resource *tmp, *child_resource; + struct list_head *resource_list; + + if (resource) + resource_list = &resource->resource_list; + else + resource_list = &devlink->resource_list; + + if (!resource) + mutex_lock(&devlink->lock); + + list_for_each_entry_safe(child_resource, tmp, resource_list, list) { + devlink_resources_unregister(devlink, child_resource); + list_del(&child_resource->list); + kfree(child_resource); + } + + if (!resource) + mutex_unlock(&devlink->lock); +} +EXPORT_SYMBOL_GPL(devlink_resources_unregister); + +/** + * devlink_resource_size_get - get and update size + * + * @devlink: devlink + * @resource_id: the requested resource id + * @p_resource_size: ptr to update + */ +int devlink_resource_size_get(struct devlink *devlink, + u64 resource_id, + u64 *p_resource_size) +{ + struct devlink_resource *resource; + int err = 0; + + mutex_lock(&devlink->lock); + resource = devlink_resource_find(devlink, NULL, resource_id); + if (!resource) { + err = -EINVAL; + goto out; + } + *p_resource_size = resource->size_new; + resource->size = resource->size_new; +out: + mutex_unlock(&devlink->lock); + return err; +} +EXPORT_SYMBOL_GPL(devlink_resource_size_get); + +/** + * devlink_dpipe_table_resource_set - set the resource id + * + * @devlink: devlink + * @table_name: table name + * @resource_id: resource id + * @resource_units: number of resource's units consumed per table's entry + */ +int devlink_dpipe_table_resource_set(struct devlink *devlink, + const char *table_name, u64 resource_id, + u64 resource_units) +{ + struct devlink_dpipe_table *table; + int err = 0; + + mutex_lock(&devlink->lock); + table = devlink_dpipe_table_find(&devlink->dpipe_table_list, + table_name); + if (!table) { + err = -EINVAL; + goto out; + } + table->resource_id = resource_id; + table->resource_units = resource_units; + table->resource_valid = true; +out: + mutex_unlock(&devlink->lock); + return err; +} +EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set); + static int __init devlink_module_init(void) { return genl_register_family(&devlink_nl_family); 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