+
+enum dev_change_type
+device_reload_config(struct device *dev, struct blob_attr *attr)
+{
+ struct blob_attr *tb[__DEV_ATTR_MAX];
+ const struct config_param_list *cfg = dev->type->config_params;
+
+ if (config_check_equal(dev->config, attr, cfg))
+ return DEV_CONFIG_NO_CHANGE;
+
+ if (cfg == &device_attr_list) {
+ memset(tb, 0, sizeof(tb));
+
+ if (dev->config)
+ blobmsg_parse(dev_attrs, __DEV_ATTR_MAX, tb,
+ blob_data(attr), blob_len(attr));
+
+ device_init_settings(dev, tb);
+ return DEV_CONFIG_APPLIED;
+ } else
+ return DEV_CONFIG_RECREATE;
+}
+
+static enum dev_change_type
+device_check_config(struct device *dev, const struct device_type *type,
+ struct blob_attr *attr)
+{
+ if (type != dev->type)
+ return DEV_CONFIG_RECREATE;
+
+ if (dev->type->reload)
+ return dev->type->reload(dev, attr);
+
+ return device_reload_config(dev, attr);
+}
+
+static void
+device_replace(struct device *dev, struct device *odev)
+{
+ struct device_user *dep, *tmp;
+ bool present = odev->present;
+
+ if (present)
+ device_set_present(odev, false);
+
+ list_for_each_entry_safe(dep, tmp, &odev->users, list) {
+ device_release(dep);
+ list_move_tail(&dep->list, &dev->users);
+ dep->dev = dev;
+ }
+ device_free(odev);
+
+ if (present)
+ device_set_present(dev, true);
+}
+
+void
+device_reset_config(void)
+{
+ struct device *dev;
+
+ avl_for_each_element(&devices, dev, avl)
+ dev->current_config = false;
+}
+
+void
+device_reset_old(void)
+{
+ struct device *dev, *tmp, *ndev;
+
+ avl_for_each_element_safe(&devices, dev, avl, tmp) {
+ if (dev->current_config || dev->default_config)
+ continue;
+
+ if (dev->type != &simple_device_type)
+ continue;
+
+ ndev = device_create_default(dev->ifname);
+ device_replace(ndev, dev);
+ }
+}
+
+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_check_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);
+}
projects / project / netifd.git / blobdiff