netdev: Remove monitors and notifiers.

[sliver-openvswitch.git] / lib / netdev.c

diff --git a/lib/netdev.c b/lib/netdev.c
index d77f2f2..1f0b764 100644 (file)
--- a/lib/netdev.c
+++ b/lib/netdev.c
@@ -1431,148 +1431,6 @@ netdev_get_dev(const struct netdev *netdev)
 {
     return netdev->netdev_dev;
 }
-
-/* Initializes 'notifier' as a netdev notifier for 'netdev', for which
- * notification will consist of calling 'cb', with auxiliary data 'aux'. */
-void
-netdev_notifier_init(struct netdev_notifier *notifier, struct netdev *netdev,
-                     void (*cb)(struct netdev_notifier *), void *aux)
-{
-    notifier->netdev = netdev;
-    notifier->cb = cb;
-    notifier->aux = aux;
-}
-\f
-/* Tracks changes in the status of a set of network devices. */
-struct netdev_monitor {
-    struct shash polled_netdevs;
-    struct sset changed_netdevs;
-};
-
-/* Creates and returns a new structure for monitor changes in the status of
- * network devices. */
-struct netdev_monitor *
-netdev_monitor_create(void)
-{
-    struct netdev_monitor *monitor = xmalloc(sizeof *monitor);
-    shash_init(&monitor->polled_netdevs);
-    sset_init(&monitor->changed_netdevs);
-    return monitor;
-}
-
-/* Destroys 'monitor'. */
-void
-netdev_monitor_destroy(struct netdev_monitor *monitor)
-{
-    if (monitor) {
-        struct shash_node *node;
-
-        SHASH_FOR_EACH (node, &monitor->polled_netdevs) {
-            struct netdev_notifier *notifier = node->data;
-            netdev_get_dev(notifier->netdev)->netdev_class->poll_remove(
-                    notifier);
-        }
-
-        shash_destroy(&monitor->polled_netdevs);
-        sset_destroy(&monitor->changed_netdevs);
-        free(monitor);
-    }
-}
-
-static void
-netdev_monitor_cb(struct netdev_notifier *notifier)
-{
-    struct netdev_monitor *monitor = notifier->aux;
-    const char *name = netdev_get_name(notifier->netdev);
-    sset_add(&monitor->changed_netdevs, name);
-}
-
-/* Attempts to add 'netdev' as a netdev monitored by 'monitor'.  Returns 0 if
- * successful, otherwise a positive errno value.
- *
- * Adding a given 'netdev' to a monitor multiple times is equivalent to adding
- * it once. */
-int
-netdev_monitor_add(struct netdev_monitor *monitor, struct netdev *netdev)
-{
-    const char *netdev_name = netdev_get_name(netdev);
-    int error = 0;
-    if (!shash_find(&monitor->polled_netdevs, netdev_name)
-            && netdev_get_dev(netdev)->netdev_class->poll_add)
-    {
-        struct netdev_notifier *notifier;
-        error = netdev_get_dev(netdev)->netdev_class->poll_add(netdev,
-                    netdev_monitor_cb, monitor, &notifier);
-        if (!error) {
-            assert(notifier->netdev == netdev);
-            shash_add(&monitor->polled_netdevs, netdev_name, notifier);
-        }
-    }
-    return error;
-}
-
-/* Removes 'netdev' from the set of netdevs monitored by 'monitor'.  (This has
- * no effect if 'netdev' is not in the set of devices monitored by
- * 'monitor'.) */
-void
-netdev_monitor_remove(struct netdev_monitor *monitor, struct netdev *netdev)
-{
-    const char *netdev_name = netdev_get_name(netdev);
-    struct shash_node *node;
-
-    node = shash_find(&monitor->polled_netdevs, netdev_name);
-    if (node) {
-        /* Cancel future notifications. */
-        struct netdev_notifier *notifier = node->data;
-        netdev_get_dev(netdev)->netdev_class->poll_remove(notifier);
-        shash_delete(&monitor->polled_netdevs, node);
-
-        /* Drop any pending notification. */
-        sset_find_and_delete(&monitor->changed_netdevs, netdev_name);
-    }
-}
-
-/* Checks for changes to netdevs in the set monitored by 'monitor'.  If any of
- * the attributes (Ethernet address, carrier status, speed or peer-advertised
- * speed, flags, etc.) of a network device monitored by 'monitor' has changed,
- * sets '*devnamep' to the name of a device that has changed and returns 0.
- * The caller is responsible for freeing '*devnamep' (with free()).
- *
- * If no devices have changed, sets '*devnamep' to NULL and returns EAGAIN. */
-int
-netdev_monitor_poll(struct netdev_monitor *monitor, char **devnamep)
-{
-    if (sset_is_empty(&monitor->changed_netdevs)) {
-        *devnamep = NULL;
-        return EAGAIN;
-    } else {
-        *devnamep = sset_pop(&monitor->changed_netdevs);
-        return 0;
-    }
-}
-
-/* Clears all notifications from 'monitor'.  May be called instead of
- * netdev_monitor_poll() by clients which don't care specifically which netdevs
- * have changed.  */
-void
-netdev_monitor_flush(struct netdev_monitor *monitor)
-{
-    sset_clear(&monitor->changed_netdevs);
-}
-
-/* Registers with the poll loop to wake up from the next call to poll_block()
- * when netdev_monitor_poll(monitor) would indicate that a device has
- * changed. */
-void
-netdev_monitor_poll_wait(const struct netdev_monitor *monitor)
-{
-    if (!sset_is_empty(&monitor->changed_netdevs)) {
-        poll_immediate_wake();
-    } else {
-        /* XXX Nothing needed here for netdev_linux, but maybe other netdev
-         * classes need help. */
-    }
-}
 \f
 /* Restore the network device flags on 'netdev' to those that were active
  * before we changed them.  Returns 0 if successful, otherwise a positive