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/*
* Copyright (C) 2007-2011 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 "vis.h"
#include "hash.h"
/* List manipulations on hardif_list have to be rtnl_lock()'ed,
* list traversals just rcu-locked */
struct list_head hardif_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(&hardif_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 (compatibility version %i) "
"loaded\n", SOURCE_VERSION, 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->forw_bat_list_lock);
spin_lock_init(&bat_priv->forw_bcast_list_lock);
spin_lock_init(&bat_priv->tt_changes_list_lock);
spin_lock_init(&bat_priv->tt_req_list_lock);
spin_lock_init(&bat_priv->tt_roam_list_lock);
spin_lock_init(&bat_priv->tt_buff_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);
spin_lock_init(&bat_priv->softif_neigh_vid_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_vids);
INIT_LIST_HEAD(&bat_priv->tt_changes_list);
INIT_LIST_HEAD(&bat_priv->tt_req_list);
INIT_LIST_HEAD(&bat_priv->tt_roam_list);
if (originator_init(bat_priv) < 1)
goto err;
if (tt_init(bat_priv) < 1)
goto err;
tt_local_add(soft_iface, soft_iface->dev_addr);
if (vis_init(bat_priv) < 1)
goto err;
atomic_set(&bat_priv->gw_reselect, 0);
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);
tt_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(const uint8_t *addr)
{
const struct hard_iface *hard_iface;
rcu_read_lock();
list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
if (hard_iface->if_status != IF_ACTIVE)
continue;
if (compare_eth(hard_iface->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);
MODULE_VERSION(SOURCE_VERSION);
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