diff options
Diffstat (limited to 'drivers/infiniband/core/sysfs.c')
| -rw-r--r-- | drivers/infiniband/core/sysfs.c | 93 |
1 files changed, 73 insertions, 20 deletions
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index 9b6a065bdfa5..c78d0c9646ae 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -349,10 +349,15 @@ static struct attribute *port_default_attrs[] = { static size_t print_ndev(const struct ib_gid_attr *gid_attr, char *buf) { - if (!gid_attr->ndev) - return -EINVAL; - - return sprintf(buf, "%s\n", gid_attr->ndev->name); + struct net_device *ndev; + size_t ret = -EINVAL; + + rcu_read_lock(); + ndev = rcu_dereference(gid_attr->ndev); + if (ndev) + ret = sprintf(buf, "%s\n", ndev->name); + rcu_read_unlock(); + return ret; } static size_t print_gid_type(const struct ib_gid_attr *gid_attr, char *buf) @@ -1015,8 +1020,10 @@ err_free_stats: return; } -static int add_port(struct ib_device *device, int port_num) +static int add_port(struct ib_core_device *coredev, int port_num) { + struct ib_device *device = rdma_device_to_ibdev(&coredev->dev); + bool is_full_dev = &device->coredev == coredev; struct ib_port *p; struct ib_port_attr attr; int i; @@ -1034,7 +1041,7 @@ static int add_port(struct ib_device *device, int port_num) p->port_num = port_num; ret = kobject_init_and_add(&p->kobj, &port_type, - device->ports_kobj, + coredev->ports_kobj, "%d", port_num); if (ret) { kfree(p); @@ -1055,7 +1062,7 @@ static int add_port(struct ib_device *device, int port_num) goto err_put; } - if (device->ops.process_mad) { + if (device->ops.process_mad && is_full_dev) { p->pma_table = get_counter_table(device, port_num); ret = sysfs_create_group(&p->kobj, p->pma_table); if (ret) @@ -1111,7 +1118,7 @@ static int add_port(struct ib_device *device, int port_num) if (ret) goto err_free_pkey; - if (device->ops.init_port) { + if (device->ops.init_port && is_full_dev) { ret = device->ops.init_port(device, port_num, &p->kobj); if (ret) goto err_remove_pkey; @@ -1122,10 +1129,10 @@ static int add_port(struct ib_device *device, int port_num) * port, so holder should be device. Therefore skip per port conunter * initialization. */ - if (device->ops.alloc_hw_stats && port_num) + if (device->ops.alloc_hw_stats && port_num && is_full_dev) setup_hw_stats(device, p, port_num); - list_add_tail(&p->kobj.entry, &device->port_list); + list_add_tail(&p->kobj.entry, &coredev->port_list); kobject_uevent(&p->kobj, KOBJ_ADD); return 0; @@ -1194,6 +1201,7 @@ static ssize_t node_type_show(struct device *device, case RDMA_NODE_RNIC: return sprintf(buf, "%d: RNIC\n", dev->node_type); case RDMA_NODE_USNIC: return sprintf(buf, "%d: usNIC\n", dev->node_type); case RDMA_NODE_USNIC_UDP: return sprintf(buf, "%d: usNIC UDP\n", dev->node_type); + case RDMA_NODE_UNSPECIFIED: return sprintf(buf, "%d: unspecified\n", dev->node_type); case RDMA_NODE_IB_SWITCH: return sprintf(buf, "%d: switch\n", dev->node_type); case RDMA_NODE_IB_ROUTER: return sprintf(buf, "%d: router\n", dev->node_type); default: return sprintf(buf, "%d: <unknown>\n", dev->node_type); @@ -1279,11 +1287,11 @@ const struct attribute_group ib_dev_attr_group = { .attrs = ib_dev_attrs, }; -static void ib_free_port_attrs(struct ib_device *device) +void ib_free_port_attrs(struct ib_core_device *coredev) { struct kobject *p, *t; - list_for_each_entry_safe(p, t, &device->port_list, entry) { + list_for_each_entry_safe(p, t, &coredev->port_list, entry) { struct ib_port *port = container_of(p, struct ib_port, kobj); list_del(&p->entry); @@ -1303,20 +1311,22 @@ static void ib_free_port_attrs(struct ib_device *device) kobject_put(p); } - kobject_put(device->ports_kobj); + kobject_put(coredev->ports_kobj); } -static int ib_setup_port_attrs(struct ib_device *device) +int ib_setup_port_attrs(struct ib_core_device *coredev) { + struct ib_device *device = rdma_device_to_ibdev(&coredev->dev); unsigned int port; int ret; - device->ports_kobj = kobject_create_and_add("ports", &device->dev.kobj); - if (!device->ports_kobj) + coredev->ports_kobj = kobject_create_and_add("ports", + &coredev->dev.kobj); + if (!coredev->ports_kobj) return -ENOMEM; rdma_for_each_port (device, port) { - ret = add_port(device, port); + ret = add_port(coredev, port); if (ret) goto err_put; } @@ -1324,7 +1334,7 @@ static int ib_setup_port_attrs(struct ib_device *device) return 0; err_put: - ib_free_port_attrs(device); + ib_free_port_attrs(coredev); return ret; } @@ -1332,7 +1342,7 @@ int ib_device_register_sysfs(struct ib_device *device) { int ret; - ret = ib_setup_port_attrs(device); + ret = ib_setup_port_attrs(&device->coredev); if (ret) return ret; @@ -1348,5 +1358,48 @@ void ib_device_unregister_sysfs(struct ib_device *device) free_hsag(&device->dev.kobj, device->hw_stats_ag); kfree(device->hw_stats); - ib_free_port_attrs(device); + ib_free_port_attrs(&device->coredev); +} + +/** + * ib_port_register_module_stat - add module counters under relevant port + * of IB device. + * + * @device: IB device to add counters + * @port_num: valid port number + * @kobj: pointer to the kobject to initialize + * @ktype: pointer to the ktype for this kobject. + * @name: the name of the kobject + */ +int ib_port_register_module_stat(struct ib_device *device, u8 port_num, + struct kobject *kobj, struct kobj_type *ktype, + const char *name) +{ + struct kobject *p, *t; + int ret; + + list_for_each_entry_safe(p, t, &device->coredev.port_list, entry) { + struct ib_port *port = container_of(p, struct ib_port, kobj); + + if (port->port_num != port_num) + continue; + + ret = kobject_init_and_add(kobj, ktype, &port->kobj, "%s", + name); + if (ret) + return ret; + } + + return 0; +} +EXPORT_SYMBOL(ib_port_register_module_stat); + +/** + * ib_port_unregister_module_stat - release module counters + * @kobj: pointer to the kobject to release + */ +void ib_port_unregister_module_stat(struct kobject *kobj) +{ + kobject_put(kobj); } +EXPORT_SYMBOL(ib_port_unregister_module_stat); |