#include "netifd.h"
#include "device.h"
+#include "interface.h"
static struct avl_tree aliases;
return 0;
}
+static void alias_device_cb(struct device_user *dep, enum device_event ev)
+{
+ struct alias_device *alias;
+ bool present = false;
+
+ alias = container_of(dep, struct alias_device, dep);
+ switch (ev) {
+ case DEV_EVENT_ADD:
+ present = true;
+ case DEV_EVENT_REMOVE:
+ device_set_present(&alias->dev, present);
+ break;
+ default:
+ device_broadcast_event(&alias->dev, ev);
+ break;
+ }
+}
+
static struct device *
alias_device_create(const char *name, struct blob_attr *attr)
{
device_init_virtual(&alias->dev, &alias_device_type, NULL);
alias->avl.key = alias->name;
avl_insert(&aliases, &alias->avl);
+ alias->dep.alias = true;
+ alias->dep.cb = alias_device_cb;
+ device_check_state(&alias->dev);
return &alias->dev;
}
free(alias);
}
-static const struct device_type alias_device_type = {
- .name = "Network alias",
- .create = alias_device_create,
- .free = alias_device_free,
-};
-
-void
-alias_notify_device(const char *name, struct device *dev)
+static void __alias_notify_device(struct alias_device *alias, struct device *dev)
{
- struct alias_device *alias;
-
- device_lock();
-
- alias = avl_find_element(&aliases, name, alias, avl);
- if (!alias)
- return;
-
alias->cleanup = !dev;
if (dev) {
if (dev != alias->dep.dev) {
}
}
- device_set_present(&alias->dev, !!dev);
-
if (!dev && alias->dep.dev && !alias->dep.dev->active) {
device_remove_user(&alias->dep);
alias->dev.hidden = true;
alias->dev.ifname[0] = 0;
device_broadcast_event(&alias->dev, DEV_EVENT_UPDATE_IFNAME);
}
+}
+
+static int alias_check_state(struct device *dev)
+{
+ struct alias_device *alias;
+ struct interface *iface;
+ struct device *ndev = NULL;
+
+ alias = container_of(dev, struct alias_device, dev);
+
+ iface = vlist_find(&interfaces, alias->name, iface, node);
+ if (iface && iface->state == IFS_UP)
+ ndev = iface->main_dev.dev;
+
+ __alias_notify_device(alias, ndev);
+
+ return 0;
+}
+
+static const struct device_type alias_device_type = {
+ .name = "Network alias",
+ .create = alias_device_create,
+ .free = alias_device_free,
+ .check_state = alias_check_state,
+};
+
+void
+alias_notify_device(const char *name, struct device *dev)
+{
+ struct alias_device *alias;
+
+ device_lock();
+
+ alias = avl_find_element(&aliases, name, alias, avl);
+ if (alias)
+ __alias_notify_device(alias, dev);
device_unlock();
}