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 static const struct stp_proto br_stp_proto = { 26 .rcv = br_stp_rcv, 27 }; 28 29 static struct pernet_operations br_net_ops = { 30 .exit = br_net_exit, 31 }; 32 33 static int __init br_init(void) 34 { 35 int err; 36 37 err = stp_proto_register(&br_stp_proto); 38 if (err < 0) { 39 pr_err("bridge: can't register sap for STP\n"); 40 return err; 41 } 42 43 err = br_fdb_init(); 44 if (err) 45 goto err_out; 46 47 err = register_pernet_subsys(&br_net_ops); 48 if (err) 49 goto err_out1; 50 51 err = br_netfilter_init(); 52 if (err) 53 goto err_out2; 54 55 err = register_netdevice_notifier(&br_device_notifier); 56 if (err) 57 goto err_out3; 58 59 err = br_netlink_init(); 60 if (err) 61 goto err_out4; 62 63 brioctl_set(br_ioctl_deviceless_stub); 64 65 #if IS_ENABLED(CONFIG_ATM_LANE) 66 br_fdb_test_addr_hook = br_fdb_test_addr; 67 #endif 68 69 return 0; 70 err_out4: 71 unregister_netdevice_notifier(&br_device_notifier); 72 err_out3: 73 br_netfilter_fini(); 74 err_out2: 75 unregister_pernet_subsys(&br_net_ops); 76 err_out1: 77 br_fdb_fini(); 78 err_out: 79 stp_proto_unregister(&br_stp_proto); 80 return err; 81 } 82 83 static void __exit br_deinit(void) 84 { 85 stp_proto_unregister(&br_stp_proto); 86 87 br_netlink_fini(); 88 unregister_netdevice_notifier(&br_device_notifier); 89 brioctl_set(NULL); 90 91 unregister_pernet_subsys(&br_net_ops); 92 93 rcu_barrier(); /* Wait for completion of call_rcu()'s */ 94 95 br_netfilter_fini(); 96 #if IS_ENABLED(CONFIG_ATM_LANE) 97 br_fdb_test_addr_hook = NULL; 98 #endif 99 100 br_fdb_fini(); 101 } 102 103 module_init(br_init) 104 module_exit(br_deinit) 105 MODULE_LICENSE("GPL"); 106 MODULE_VERSION(BR_VERSION); 107 MODULE_ALIAS_RTNL_LINK("bridge"); 108