mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 05:11:48 +00:00
473c22d759
When unloading modules that uses call_rcu() callbacks, then we must use rcu_barrier(). This module uses syncronize_net() which is not enough to be sure that all callback has been completed. Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
113 lines
2.2 KiB
C
113 lines
2.2 KiB
C
/*
|
|
* Generic parts
|
|
* Linux ethernet bridge
|
|
*
|
|
* Authors:
|
|
* Lennert Buytenhek <buytenh@gnu.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/init.h>
|
|
#include <linux/llc.h>
|
|
#include <net/llc.h>
|
|
#include <net/stp.h>
|
|
|
|
#include "br_private.h"
|
|
|
|
int (*br_should_route_hook)(struct sk_buff *skb);
|
|
|
|
static const struct stp_proto br_stp_proto = {
|
|
.rcv = br_stp_rcv,
|
|
};
|
|
|
|
static struct pernet_operations br_net_ops = {
|
|
.exit = br_net_exit,
|
|
};
|
|
|
|
static int __init br_init(void)
|
|
{
|
|
int err;
|
|
|
|
err = stp_proto_register(&br_stp_proto);
|
|
if (err < 0) {
|
|
printk(KERN_ERR "bridge: can't register sap for STP\n");
|
|
return err;
|
|
}
|
|
|
|
err = br_fdb_init();
|
|
if (err)
|
|
goto err_out;
|
|
|
|
err = register_pernet_subsys(&br_net_ops);
|
|
if (err)
|
|
goto err_out1;
|
|
|
|
err = br_netfilter_init();
|
|
if (err)
|
|
goto err_out2;
|
|
|
|
err = register_netdevice_notifier(&br_device_notifier);
|
|
if (err)
|
|
goto err_out3;
|
|
|
|
err = br_netlink_init();
|
|
if (err)
|
|
goto err_out4;
|
|
|
|
brioctl_set(br_ioctl_deviceless_stub);
|
|
br_handle_frame_hook = br_handle_frame;
|
|
|
|
#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
|
|
br_fdb_test_addr_hook = br_fdb_test_addr;
|
|
#endif
|
|
|
|
return 0;
|
|
err_out4:
|
|
unregister_netdevice_notifier(&br_device_notifier);
|
|
err_out3:
|
|
br_netfilter_fini();
|
|
err_out2:
|
|
unregister_pernet_subsys(&br_net_ops);
|
|
err_out1:
|
|
br_fdb_fini();
|
|
err_out:
|
|
stp_proto_unregister(&br_stp_proto);
|
|
return err;
|
|
}
|
|
|
|
static void __exit br_deinit(void)
|
|
{
|
|
stp_proto_unregister(&br_stp_proto);
|
|
|
|
br_netlink_fini();
|
|
unregister_netdevice_notifier(&br_device_notifier);
|
|
brioctl_set(NULL);
|
|
|
|
unregister_pernet_subsys(&br_net_ops);
|
|
|
|
rcu_barrier(); /* Wait for completion of call_rcu()'s */
|
|
|
|
br_netfilter_fini();
|
|
#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
|
|
br_fdb_test_addr_hook = NULL;
|
|
#endif
|
|
|
|
br_handle_frame_hook = NULL;
|
|
br_fdb_fini();
|
|
}
|
|
|
|
EXPORT_SYMBOL(br_should_route_hook);
|
|
|
|
module_init(br_init)
|
|
module_exit(br_deinit)
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_VERSION(BR_VERSION);
|