+
+struct device *
+device_create(const char *name, const struct device_type *type,
+ struct blob_attr *config)
+{
+ struct device *odev = NULL, *dev;
+ enum dev_change_type change;
+
+ config = config_memdup(config);
+ if (!config)
+ return NULL;
+
+ odev = device_get(name, false);
+ if (odev) {
+ odev->current_config = true;
+ change = device_set_config(odev, type, config);
+ switch (change) {
+ case DEV_CONFIG_APPLIED:
+ D(DEVICE, "Device '%s': config applied\n", odev->ifname);
+ free(odev->config);
+ odev->config = config;
+ if (odev->present) {
+ device_set_present(odev, false);
+ device_set_present(odev, true);
+ }
+ return odev;
+ case DEV_CONFIG_NO_CHANGE:
+ D(DEVICE, "Device '%s': no configuration change\n", odev->ifname);
+ free(config);
+ return odev;
+ case DEV_CONFIG_RECREATE:
+ D(DEVICE, "Device '%s': recreate device\n", odev->ifname);
+ device_delete(odev);
+ break;
+ }
+ } else
+ D(DEVICE, "Create new device '%s' (%s)\n", name, type->name);
+
+ dev = type->create(name, config);
+ if (!dev)
+ return NULL;
+
+ dev->current_config = true;
+ dev->config = config;
+ if (odev)
+ device_replace(dev, odev);
+
+ if (!config_init && dev->config_pending)
+ type->config_init(dev);
+
+ return dev;
+}
+
+void
+device_dump_status(struct blob_buf *b, struct device *dev)
+{
+ void *c, *s;
+
+ if (!dev) {
+ avl_for_each_element(&devices, dev, avl) {
+ if (!dev->present)
+ continue;
+ c = blobmsg_open_table(b, dev->ifname);
+ device_dump_status(b, dev);
+ blobmsg_close_table(b, c);
+ }
+
+ return;
+ }
+
+ if (!dev->present)
+ return;
+
+ blobmsg_add_string(b, "type", dev->type->name);
+ blobmsg_add_u8(b, "up", !!dev->active);
+ if (dev->type->dump_info)
+ dev->type->dump_info(dev, b);
+
+ s = blobmsg_open_table(b, "statistics");
+ if (dev->type->dump_stats)
+ dev->type->dump_stats(dev, b);
+ else
+ system_if_dump_stats(dev, b);
+ blobmsg_close_table(b, s);
+}