294 lines
6.7 KiB
C
294 lines
6.7 KiB
C
/*
|
|
* Copyright (C) 2007-2012 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 "bridge_loop_avoidance.h"
|
|
#include "vis.h"
|
|
#include "hash.h"
|
|
#include "bat_algo.h"
|
|
|
|
|
|
/* List manipulations on hardif_list have to be rtnl_lock()'ed,
|
|
* list traversals just rcu-locked */
|
|
struct list_head hardif_list;
|
|
char bat_routing_algo[20] = "BATMAN IV";
|
|
static struct hlist_head bat_algo_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);
|
|
INIT_HLIST_HEAD(&bat_algo_list);
|
|
|
|
bat_iv_init();
|
|
|
|
/* 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);
|
|
|
|
INIT_HLIST_HEAD(&bat_priv->forw_bat_list);
|
|
INIT_HLIST_HEAD(&bat_priv->forw_bcast_list);
|
|
INIT_HLIST_HEAD(&bat_priv->gw_list);
|
|
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, NULL_IFINDEX);
|
|
|
|
if (vis_init(bat_priv) < 1)
|
|
goto err;
|
|
|
|
if (bla_init(bat_priv) < 1)
|
|
goto err;
|
|
|
|
atomic_set(&bat_priv->gw_reselect, 0);
|
|
atomic_set(&bat_priv->mesh_state, MESH_ACTIVE);
|
|
goto end;
|
|
|
|
err:
|
|
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);
|
|
|
|
bla_free(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;
|
|
}
|
|
|
|
static struct bat_algo_ops *bat_algo_get(char *name)
|
|
{
|
|
struct bat_algo_ops *bat_algo_ops = NULL, *bat_algo_ops_tmp;
|
|
struct hlist_node *node;
|
|
|
|
hlist_for_each_entry(bat_algo_ops_tmp, node, &bat_algo_list, list) {
|
|
if (strcmp(bat_algo_ops_tmp->name, name) != 0)
|
|
continue;
|
|
|
|
bat_algo_ops = bat_algo_ops_tmp;
|
|
break;
|
|
}
|
|
|
|
return bat_algo_ops;
|
|
}
|
|
|
|
int bat_algo_register(struct bat_algo_ops *bat_algo_ops)
|
|
{
|
|
struct bat_algo_ops *bat_algo_ops_tmp;
|
|
int ret = -1;
|
|
|
|
bat_algo_ops_tmp = bat_algo_get(bat_algo_ops->name);
|
|
if (bat_algo_ops_tmp) {
|
|
pr_info("Trying to register already registered routing algorithm: %s\n",
|
|
bat_algo_ops->name);
|
|
goto out;
|
|
}
|
|
|
|
/* all algorithms must implement all ops (for now) */
|
|
if (!bat_algo_ops->bat_iface_enable ||
|
|
!bat_algo_ops->bat_iface_disable ||
|
|
!bat_algo_ops->bat_primary_iface_set ||
|
|
!bat_algo_ops->bat_ogm_update_mac ||
|
|
!bat_algo_ops->bat_ogm_schedule ||
|
|
!bat_algo_ops->bat_ogm_emit ||
|
|
!bat_algo_ops->bat_ogm_receive) {
|
|
pr_info("Routing algo '%s' does not implement required ops\n",
|
|
bat_algo_ops->name);
|
|
goto out;
|
|
}
|
|
|
|
INIT_HLIST_NODE(&bat_algo_ops->list);
|
|
hlist_add_head(&bat_algo_ops->list, &bat_algo_list);
|
|
ret = 0;
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
int bat_algo_select(struct bat_priv *bat_priv, char *name)
|
|
{
|
|
struct bat_algo_ops *bat_algo_ops;
|
|
int ret = -1;
|
|
|
|
bat_algo_ops = bat_algo_get(name);
|
|
if (!bat_algo_ops)
|
|
goto out;
|
|
|
|
bat_priv->bat_algo_ops = bat_algo_ops;
|
|
ret = 0;
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
int bat_algo_seq_print_text(struct seq_file *seq, void *offset)
|
|
{
|
|
struct bat_algo_ops *bat_algo_ops;
|
|
struct hlist_node *node;
|
|
|
|
seq_printf(seq, "Available routing algorithms:\n");
|
|
|
|
hlist_for_each_entry(bat_algo_ops, node, &bat_algo_list, list) {
|
|
seq_printf(seq, "%s\n", bat_algo_ops->name);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int param_set_ra(const char *val, const struct kernel_param *kp)
|
|
{
|
|
struct bat_algo_ops *bat_algo_ops;
|
|
|
|
bat_algo_ops = bat_algo_get((char *)val);
|
|
if (!bat_algo_ops) {
|
|
pr_err("Routing algorithm '%s' is not supported\n", val);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return param_set_copystring(val, kp);
|
|
}
|
|
|
|
static const struct kernel_param_ops param_ops_ra = {
|
|
.set = param_set_ra,
|
|
.get = param_get_string,
|
|
};
|
|
|
|
static struct kparam_string __param_string_ra = {
|
|
.maxlen = sizeof(bat_routing_algo),
|
|
.string = bat_routing_algo,
|
|
};
|
|
|
|
module_param_cb(routing_algo, ¶m_ops_ra, &__param_string_ra, 0644);
|
|
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);
|