netfilter: netns ebtables: ebtable_broute in netns
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Patrick McHardy <kaber@trash.net>
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@ -4,7 +4,10 @@
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#include <linux/list.h>
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#include <linux/netfilter.h>
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struct ebt_table;
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struct netns_xt {
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struct list_head tables[NFPROTO_NUMPROTO];
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struct ebt_table *broute_table;
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};
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#endif
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@ -41,33 +41,52 @@ static int check(const struct ebt_table_info *info, unsigned int valid_hooks)
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return 0;
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}
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static struct ebt_table __broute_table =
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static struct ebt_table broute_table =
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{
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.name = "broute",
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.table = &initial_table,
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.valid_hooks = 1 << NF_BR_BROUTING,
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.lock = __RW_LOCK_UNLOCKED(__broute_table.lock),
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.lock = __RW_LOCK_UNLOCKED(broute_table.lock),
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.check = check,
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.me = THIS_MODULE,
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};
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static struct ebt_table *broute_table;
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static int ebt_broute(struct sk_buff *skb)
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{
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int ret;
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ret = ebt_do_table(NF_BR_BROUTING, skb, skb->dev, NULL,
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broute_table);
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dev_net(skb->dev)->xt.broute_table);
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if (ret == NF_DROP)
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return 1; /* route it */
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return 0; /* bridge it */
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}
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static int __net_init broute_net_init(struct net *net)
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{
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net->xt.broute_table = ebt_register_table(net, &broute_table);
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if (IS_ERR(net->xt.broute_table))
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return PTR_ERR(net->xt.broute_table);
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return 0;
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}
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static void __net_exit broute_net_exit(struct net *net)
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{
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ebt_unregister_table(net->xt.broute_table);
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}
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static struct pernet_operations broute_net_ops = {
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.init = broute_net_init,
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.exit = broute_net_exit,
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};
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static int __init ebtable_broute_init(void)
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{
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broute_table = ebt_register_table(&init_net, &__broute_table);
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if (IS_ERR(broute_table))
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return PTR_ERR(broute_table);
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int ret;
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ret = register_pernet_subsys(&broute_net_ops);
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if (ret < 0)
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return ret;
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/* see br_input.c */
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rcu_assign_pointer(br_should_route_hook, ebt_broute);
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return 0;
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@ -77,7 +96,7 @@ static void __exit ebtable_broute_fini(void)
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{
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rcu_assign_pointer(br_should_route_hook, NULL);
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synchronize_net();
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ebt_unregister_table(broute_table);
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unregister_pernet_subsys(&broute_net_ops);
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}
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module_init(ebtable_broute_init);
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