net: Add batman-adv meshing protocol

[mv-sheeva.git] / net / batman-adv / main.c

diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
new file mode 100644 (file)
index 0000000..b827f6a
--- /dev/null
+++ b/net/batman-adv/main.c
@@ -0,0 +1,187 @@
+/*
+ * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA
+ *
+ */
+
+#include "main.h"
+#include "bat_sysfs.h"
+#include "bat_debugfs.h"
+#include "routing.h"
+#include "send.h"
+#include "originator.h"
+#include "soft-interface.h"
+#include "icmp_socket.h"
+#include "translation-table.h"
+#include "hard-interface.h"
+#include "gateway_client.h"
+#include "types.h"
+#include "vis.h"
+#include "hash.h"
+
+struct list_head if_list;
+
+unsigned char broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+
+struct workqueue_struct *bat_event_workqueue;
+
+static int __init batman_init(void)
+{
+       INIT_LIST_HEAD(&if_list);
+
+       /* the name should not be longer than 10 chars - see
+        * http://lwn.net/Articles/23634/ */
+       bat_event_workqueue = create_singlethread_workqueue("bat_events");
+
+       if (!bat_event_workqueue)
+               return -ENOMEM;
+
+       bat_socket_init();
+       debugfs_init();
+
+       register_netdevice_notifier(&hard_if_notifier);
+
+       pr_info("B.A.T.M.A.N. advanced %s%s (compatibility version %i) "
+               "loaded\n", SOURCE_VERSION, REVISION_VERSION_STR,
+               COMPAT_VERSION);
+
+       return 0;
+}
+
+static void __exit batman_exit(void)
+{
+       debugfs_destroy();
+       unregister_netdevice_notifier(&hard_if_notifier);
+       hardif_remove_interfaces();
+
+       flush_workqueue(bat_event_workqueue);
+       destroy_workqueue(bat_event_workqueue);
+       bat_event_workqueue = NULL;
+
+       rcu_barrier();
+}
+
+int mesh_init(struct net_device *soft_iface)
+{
+       struct bat_priv *bat_priv = netdev_priv(soft_iface);
+
+       spin_lock_init(&bat_priv->orig_hash_lock);
+       spin_lock_init(&bat_priv->forw_bat_list_lock);
+       spin_lock_init(&bat_priv->forw_bcast_list_lock);
+       spin_lock_init(&bat_priv->hna_lhash_lock);
+       spin_lock_init(&bat_priv->hna_ghash_lock);
+       spin_lock_init(&bat_priv->gw_list_lock);
+       spin_lock_init(&bat_priv->vis_hash_lock);
+       spin_lock_init(&bat_priv->vis_list_lock);
+       spin_lock_init(&bat_priv->softif_neigh_lock);
+
+       INIT_HLIST_HEAD(&bat_priv->forw_bat_list);
+       INIT_HLIST_HEAD(&bat_priv->forw_bcast_list);
+       INIT_HLIST_HEAD(&bat_priv->gw_list);
+       INIT_HLIST_HEAD(&bat_priv->softif_neigh_list);
+
+       if (originator_init(bat_priv) < 1)
+               goto err;
+
+       if (hna_local_init(bat_priv) < 1)
+               goto err;
+
+       if (hna_global_init(bat_priv) < 1)
+               goto err;
+
+       hna_local_add(soft_iface, soft_iface->dev_addr);
+
+       if (vis_init(bat_priv) < 1)
+               goto err;
+
+       atomic_set(&bat_priv->mesh_state, MESH_ACTIVE);
+       goto end;
+
+err:
+       pr_err("Unable to allocate memory for mesh information structures: "
+              "out of mem ?\n");
+       mesh_free(soft_iface);
+       return -1;
+
+end:
+       return 0;
+}
+
+void mesh_free(struct net_device *soft_iface)
+{
+       struct bat_priv *bat_priv = netdev_priv(soft_iface);
+
+       atomic_set(&bat_priv->mesh_state, MESH_DEACTIVATING);
+
+       purge_outstanding_packets(bat_priv, NULL);
+
+       vis_quit(bat_priv);
+
+       gw_node_purge(bat_priv);
+       originator_free(bat_priv);
+
+       hna_local_free(bat_priv);
+       hna_global_free(bat_priv);
+
+       softif_neigh_purge(bat_priv);
+
+       atomic_set(&bat_priv->mesh_state, MESH_INACTIVE);
+}
+
+void inc_module_count(void)
+{
+       try_module_get(THIS_MODULE);
+}
+
+void dec_module_count(void)
+{
+       module_put(THIS_MODULE);
+}
+
+int is_my_mac(uint8_t *addr)
+{
+       struct batman_if *batman_if;
+
+       rcu_read_lock();
+       list_for_each_entry_rcu(batman_if, &if_list, list) {
+               if (batman_if->if_status != IF_ACTIVE)
+                       continue;
+
+               if (compare_orig(batman_if->net_dev->dev_addr, addr)) {
+                       rcu_read_unlock();
+                       return 1;
+               }
+       }
+       rcu_read_unlock();
+       return 0;
+
+}
+
+module_init(batman_init);
+module_exit(batman_exit);
+
+MODULE_LICENSE("GPL");
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_SUPPORTED_DEVICE(DRIVER_DEVICE);
+#ifdef REVISION_VERSION
+MODULE_VERSION(SOURCE_VERSION "-" REVISION_VERSION);
+#else
+MODULE_VERSION(SOURCE_VERSION);
+#endif