diff options
| -rw-r--r-- | include/net/netns/x_tables.h | 1 | ||||
| -rw-r--r-- | net/bridge/netfilter/ebtable_filter.c | 50 |
2 files changed, 38 insertions, 13 deletions
diff --git a/include/net/netns/x_tables.h b/include/net/netns/x_tables.h index 055e684..d258e16 100644 --- a/include/net/netns/x_tables.h +++ b/include/net/netns/x_tables.h @@ -9,5 +9,6 @@ struct ebt_table; struct netns_xt { struct list_head tables[NFPROTO_NUMPROTO]; struct ebt_table *broute_table; + struct ebt_table *frame_filter; }; #endif diff --git a/net/bridge/netfilter/ebtable_filter.c b/net/bridge/netfilter/ebtable_filter.c index 596564c..2b2e804 100644 --- a/net/bridge/netfilter/ebtable_filter.c +++ b/net/bridge/netfilter/ebtable_filter.c @@ -50,41 +50,47 @@ static int check(const struct ebt_table_info *info, unsigned int valid_hooks) return 0; } -static struct ebt_table __frame_filter = +static struct ebt_table frame_filter = { .name = "filter", .table = &initial_table, .valid_hooks = FILTER_VALID_HOOKS, - .lock = __RW_LOCK_UNLOCKED(__frame_filter.lock), + .lock = __RW_LOCK_UNLOCKED(frame_filter.lock), .check = check, .me = THIS_MODULE, }; -static struct ebt_table *frame_filter; static unsigned int -ebt_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in, +ebt_in_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - return ebt_do_table(hook, skb, in, out, frame_filter); + return ebt_do_table(hook, skb, in, out, dev_net(in)->xt.frame_filter); +} + +static unsigned int +ebt_out_hook(unsigned int hook, struct sk_buff *skb, const struct net_device *in, + const struct net_device *out, int (*okfn)(struct sk_buff *)) +{ + return ebt_do_table(hook, skb, in, out, dev_net(out)->xt.frame_filter); } static struct nf_hook_ops ebt_ops_filter[] __read_mostly = { { - .hook = ebt_hook, + .hook = ebt_in_hook, .owner = THIS_MODULE, .pf = PF_BRIDGE, .hooknum = NF_BR_LOCAL_IN, .priority = NF_BR_PRI_FILTER_BRIDGED, }, { - .hook = ebt_hook, + .hook = ebt_in_hook, .owner = THIS_MODULE, .pf = PF_BRIDGE, .hooknum = NF_BR_FORWARD, .priority = NF_BR_PRI_FILTER_BRIDGED, }, { - .hook = ebt_hook, + .hook = ebt_out_hook, .owner = THIS_MODULE, .pf = PF_BRIDGE, .hooknum = NF_BR_LOCAL_OUT, @@ -92,23 +98,41 @@ static struct nf_hook_ops ebt_ops_filter[] __read_mostly = { }, }; +static int __net_init frame_filter_net_init(struct net *net) +{ + net->xt.frame_filter = ebt_register_table(net, &frame_filter); + if (IS_ERR(net->xt.frame_filter)) + return PTR_ERR(net->xt.frame_filter); + return 0; +} + +static void __net_exit frame_filter_net_exit(struct net *net) +{ + ebt_unregister_table(net->xt.frame_filter); +} + +static struct pernet_operations frame_filter_net_ops = { + .init = frame_filter_net_init, + .exit = frame_filter_net_exit, +}; + static int __init ebtable_filter_init(void) { int ret; - frame_filter = ebt_register_table(&init_net, &__frame_filter); - if (IS_ERR(frame_filter)) - return PTR_ERR(frame_filter); + ret = register_pernet_subsys(&frame_filter_net_ops); + if (ret < 0) + return ret; ret = nf_register_hooks(ebt_ops_filter, ARRAY_SIZE(ebt_ops_filter)); if (ret < 0) - ebt_unregister_table(frame_filter); + unregister_pernet_subsys(&frame_filter_net_ops); return ret; } static void __exit ebtable_filter_fini(void) { nf_unregister_hooks(ebt_ops_filter, ARRAY_SIZE(ebt_ops_filter)); - ebt_unregister_table(frame_filter); + unregister_pernet_subsys(&frame_filter_net_ops); } module_init(ebtable_filter_init); |
