diff options
| -rw-r--r-- | include/net/netns/ipv4.h | 1 | ||||
| -rw-r--r-- | net/ipv4/netfilter/arptable_filter.c | 38 |
2 files changed, 29 insertions, 10 deletions
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h index aeb0c3b8df11..a9b4f6086294 100644 --- a/include/net/netns/ipv4.h +++ b/include/net/netns/ipv4.h @@ -31,6 +31,7 @@ struct netns_ipv4 { struct xt_table *iptable_filter; struct xt_table *iptable_mangle; struct xt_table *iptable_raw; + struct xt_table *arptable_filter; #endif }; #endif diff --git a/net/ipv4/netfilter/arptable_filter.c b/net/ipv4/netfilter/arptable_filter.c index 1a688607fe83..4e9c496a30c2 100644 --- a/net/ipv4/netfilter/arptable_filter.c +++ b/net/ipv4/netfilter/arptable_filter.c @@ -20,7 +20,7 @@ static struct struct arpt_replace repl; struct arpt_standard entries[3]; struct arpt_error term; -} initial_table __initdata = { +} initial_table __net_initdata = { .repl = { .name = "filter", .valid_hooks = FILTER_VALID_HOOKS, @@ -45,7 +45,7 @@ static struct .term = ARPT_ERROR_INIT, }; -static struct arpt_table __packet_filter = { +static struct arpt_table packet_filter = { .name = "filter", .valid_hooks = FILTER_VALID_HOOKS, .lock = RW_LOCK_UNLOCKED, @@ -53,7 +53,6 @@ static struct arpt_table __packet_filter = { .me = THIS_MODULE, .af = NF_ARP, }; -static struct arpt_table *packet_filter; /* The work comes in here from netfilter.c */ static unsigned int arpt_hook(unsigned int hook, @@ -62,7 +61,7 @@ static unsigned int arpt_hook(unsigned int hook, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - return arpt_do_table(skb, hook, in, out, packet_filter); + return arpt_do_table(skb, hook, in, out, init_net.ipv4.arptable_filter); } static struct nf_hook_ops arpt_ops[] __read_mostly = { @@ -86,14 +85,33 @@ static struct nf_hook_ops arpt_ops[] __read_mostly = { }, }; +static int __net_init arptable_filter_net_init(struct net *net) +{ + /* Register table */ + net->ipv4.arptable_filter = + arpt_register_table(net, &packet_filter, &initial_table.repl); + if (IS_ERR(net->ipv4.arptable_filter)) + return PTR_ERR(net->ipv4.arptable_filter); + return 0; +} + +static void __net_exit arptable_filter_net_exit(struct net *net) +{ + arpt_unregister_table(net->ipv4.arptable_filter); +} + +static struct pernet_operations arptable_filter_net_ops = { + .init = arptable_filter_net_init, + .exit = arptable_filter_net_exit, +}; + static int __init arptable_filter_init(void) { int ret; - /* Register table */ - packet_filter = arpt_register_table(&init_net, &__packet_filter, &initial_table.repl); - if (IS_ERR(packet_filter)) - return PTR_ERR(packet_filter); + ret = register_pernet_subsys(&arptable_filter_net_ops); + if (ret < 0) + return ret; ret = nf_register_hooks(arpt_ops, ARRAY_SIZE(arpt_ops)); if (ret < 0) @@ -101,14 +119,14 @@ static int __init arptable_filter_init(void) return ret; cleanup_table: - arpt_unregister_table(packet_filter); + unregister_pernet_subsys(&arptable_filter_net_ops); return ret; } static void __exit arptable_filter_fini(void) { nf_unregister_hooks(arpt_ops, ARRAY_SIZE(arpt_ops)); - arpt_unregister_table(packet_filter); + unregister_pernet_subsys(&arptable_filter_net_ops); } module_init(arptable_filter_init); |