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
/*
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* Generic parts
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* Linux ethernet bridge
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*
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* Authors:
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* Lennert Buytenhek <buytenh@gnu.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/init.h>
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#include <linux/llc.h>
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#include <net/llc.h>
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#include <net/stp.h>
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#include "br_private.h"
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int (*br_should_route_hook)(struct sk_buff *skb);
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static const struct stp_proto br_stp_proto = {
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.rcv = br_stp_rcv,
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};
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static struct pernet_operations br_net_ops = {
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.exit = br_net_exit,
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};
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static int __init br_init(void)
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{
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int err;
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err = stp_proto_register(&br_stp_proto);
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if (err < 0) {
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printk(KERN_ERR "bridge: can't register sap for STP\n");
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return err;
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}
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err = br_fdb_init();
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if (err)
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goto err_out;
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err = register_pernet_subsys(&br_net_ops);
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if (err)
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goto err_out1;
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err = br_netfilter_init();
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if (err)
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goto err_out2;
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err = register_netdevice_notifier(&br_device_notifier);
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if (err)
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goto err_out3;
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err = br_netlink_init();
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if (err)
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goto err_out4;
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brioctl_set(br_ioctl_deviceless_stub);
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br_handle_frame_hook = br_handle_frame;
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#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
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br_fdb_test_addr_hook = br_fdb_test_addr;
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#endif
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return 0;
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err_out4:
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unregister_netdevice_notifier(&br_device_notifier);
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err_out3:
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br_netfilter_fini();
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err_out2:
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unregister_pernet_subsys(&br_net_ops);
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err_out1:
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br_fdb_fini();
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err_out:
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stp_proto_unregister(&br_stp_proto);
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return err;
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}
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static void __exit br_deinit(void)
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{
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stp_proto_unregister(&br_stp_proto);
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br_netlink_fini();
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unregister_netdevice_notifier(&br_device_notifier);
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brioctl_set(NULL);
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unregister_pernet_subsys(&br_net_ops);
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rcu_barrier(); /* Wait for completion of call_rcu()'s */
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br_netfilter_fini();
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#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
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br_fdb_test_addr_hook = NULL;
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#endif
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br_handle_frame_hook = NULL;
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br_fdb_fini();
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}
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EXPORT_SYMBOL(br_should_route_hook);
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module_init(br_init)
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module_exit(br_deinit)
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MODULE_LICENSE("GPL");
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MODULE_VERSION(BR_VERSION);
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