aboutsummaryrefslogblamecommitdiffstats
path: root/net/bridge/br.c
blob: 4d2c1f1cb5243d2d4e7e7713bc411d4d13491e4d (plain) (tree)
1
2
3
4
5
6
7






                                                         





                                                                     




                              

                      
                    


                       
                                                 
 


                                              
 



                                              

                               

                

                                                
                                                                        
                           

         

                            
                             
 
                                                  


                              
                                  


                              
                                                               


                              



                                





                                               
                 
         
                                                           
         
                            

                                              
         

                      
                                            
                   



                                  
                                            
 
                          


                                                           
                                              


                          
                            











                                    
                           
/*
 *	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;

	br_fdb_get_hook = br_fdb_get;
	br_fdb_put_hook = br_fdb_put;

	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);

	synchronize_net();

	br_netfilter_fini();
	br_fdb_get_hook = NULL;
	br_fdb_put_hook = NULL;

	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);