1 /* 2 * Generic parts 3 * Linux ethernet bridge 4 * 5 * Authors: 6 * Lennert Buytenhek <buytenh@gnu.org> 7 * 8 * $Id: br.c,v 1.47 2001/12/24 00:56:41 davem Exp $ 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License 12 * as published by the Free Software Foundation; either version 13 * 2 of the License, or (at your option) any later version. 14 */ 15 16 #include <linux/config.h> 17 #include <linux/module.h> 18 #include <linux/kernel.h> 19 #include <linux/netdevice.h> 20 #include <linux/etherdevice.h> 21 #include <linux/init.h> 22 #include <linux/llc.h> 23 #include <net/llc.h> 24 25 #include "br_private.h" 26 27 int (*br_should_route_hook) (struct sk_buff **pskb) = NULL; 28 29 static struct llc_sap *br_stp_sap; 30 31 static int __init br_init(void) 32 { 33 int err; 34 35 br_stp_sap = llc_sap_open(LLC_SAP_BSPAN, br_stp_rcv); 36 if (!br_stp_sap) { 37 printk(KERN_ERR "bridge: can't register sap for STP\n"); 38 return -EADDRINUSE; 39 } 40 41 br_fdb_init(); 42 43 err = br_netfilter_init(); 44 if (err) 45 goto err_out1; 46 47 err = register_netdevice_notifier(&br_device_notifier); 48 if (err) 49 goto err_out2; 50 51 br_netlink_init(); 52 brioctl_set(br_ioctl_deviceless_stub); 53 br_handle_frame_hook = br_handle_frame; 54 55 br_fdb_get_hook = br_fdb_get; 56 br_fdb_put_hook = br_fdb_put; 57 58 return 0; 59 60 err_out2: 61 br_netfilter_fini(); 62 err_out1: 63 llc_sap_put(br_stp_sap); 64 return err; 65 } 66 67 static void __exit br_deinit(void) 68 { 69 rcu_assign_pointer(br_stp_sap->rcv_func, NULL); 70 71 br_netlink_fini(); 72 br_netfilter_fini(); 73 unregister_netdevice_notifier(&br_device_notifier); 74 brioctl_set(NULL); 75 76 br_cleanup_bridges(); 77 78 synchronize_net(); 79 80 llc_sap_put(br_stp_sap); 81 br_fdb_get_hook = NULL; 82 br_fdb_put_hook = NULL; 83 84 br_handle_frame_hook = NULL; 85 br_fdb_fini(); 86 } 87 88 EXPORT_SYMBOL(br_should_route_hook); 89 90 module_init(br_init) 91 module_exit(br_deinit) 92 MODULE_LICENSE("GPL"); 93 MODULE_VERSION(BR_VERSION); 94