1 /* 2 * Generic parts 3 * Linux ethernet bridge 4 * 5 * Authors: 6 * Lennert Buytenhek <buytenh@gnu.org> 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License 10 * as published by the Free Software Foundation; either version 11 * 2 of the License, or (at your option) any later version. 12 */ 13 14 #include <linux/module.h> 15 #include <linux/kernel.h> 16 #include <linux/netdevice.h> 17 #include <linux/etherdevice.h> 18 #include <linux/init.h> 19 #include <linux/llc.h> 20 #include <net/llc.h> 21 #include <net/stp.h> 22 23 #include "br_private.h" 24 25 int (*br_should_route_hook)(struct sk_buff *skb); 26 27 static const struct stp_proto br_stp_proto = { 28 .rcv = br_stp_rcv, 29 }; 30 31 static struct pernet_operations br_net_ops = { 32 .exit = br_net_exit, 33 }; 34 35 static int __init br_init(void) 36 { 37 int err; 38 39 err = stp_proto_register(&br_stp_proto); 40 if (err < 0) { 41 printk(KERN_ERR "bridge: can't register sap for STP\n"); 42 return err; 43 } 44 45 err = br_fdb_init(); 46 if (err) 47 goto err_out; 48 49 err = register_pernet_subsys(&br_net_ops); 50 if (err) 51 goto err_out1; 52 53 err = br_netfilter_init(); 54 if (err) 55 goto err_out2; 56 57 err = register_netdevice_notifier(&br_device_notifier); 58 if (err) 59 goto err_out3; 60 61 err = br_netlink_init(); 62 if (err) 63 goto err_out4; 64 65 brioctl_set(br_ioctl_deviceless_stub); 66 br_handle_frame_hook = br_handle_frame; 67 68 br_fdb_get_hook = br_fdb_get; 69 br_fdb_put_hook = br_fdb_put; 70 71 return 0; 72 err_out4: 73 unregister_netdevice_notifier(&br_device_notifier); 74 err_out3: 75 br_netfilter_fini(); 76 err_out2: 77 unregister_pernet_subsys(&br_net_ops); 78 err_out1: 79 br_fdb_fini(); 80 err_out: 81 stp_proto_unregister(&br_stp_proto); 82 return err; 83 } 84 85 static void __exit br_deinit(void) 86 { 87 stp_proto_unregister(&br_stp_proto); 88 89 br_netlink_fini(); 90 unregister_netdevice_notifier(&br_device_notifier); 91 brioctl_set(NULL); 92 93 unregister_pernet_subsys(&br_net_ops); 94 95 synchronize_net(); 96 97 br_netfilter_fini(); 98 br_fdb_get_hook = NULL; 99 br_fdb_put_hook = NULL; 100 101 br_handle_frame_hook = NULL; 102 br_fdb_fini(); 103 } 104 105 EXPORT_SYMBOL(br_should_route_hook); 106 107 module_init(br_init) 108 module_exit(br_deinit) 109 MODULE_LICENSE("GPL"); 110 MODULE_VERSION(BR_VERSION); 111