diff options
| -rw-r--r-- | include/net/netns/ipv4.h | 5 | ||||
| -rw-r--r-- | net/ipv4/netfilter/iptable_filter.c | 41 | ||||
| -rw-r--r-- | net/ipv4/netfilter/iptable_mangle.c | 41 | ||||
| -rw-r--r-- | net/ipv4/netfilter/iptable_raw.c | 41 |
4 files changed, 92 insertions, 36 deletions
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h index 15a0b05..aeb0c3b8 100644 --- a/include/net/netns/ipv4.h +++ b/include/net/netns/ipv4.h @@ -27,5 +27,10 @@ struct netns_ipv4 { struct sock *fibnl; struct netns_frags frags; +#ifdef CONFIG_NETFILTER + struct xt_table *iptable_filter; + struct xt_table *iptable_mangle; + struct xt_table *iptable_raw; +#endif }; #endif diff --git a/net/ipv4/netfilter/iptable_filter.c b/net/ipv4/netfilter/iptable_filter.c index 3b43ca0..69f3d7e 100644 --- a/net/ipv4/netfilter/iptable_filter.c +++ b/net/ipv4/netfilter/iptable_filter.c @@ -28,7 +28,7 @@ static struct struct ipt_replace repl; struct ipt_standard entries[3]; struct ipt_error term; -} initial_table __initdata = { +} initial_table __net_initdata = { .repl = { .name = "filter", .valid_hooks = FILTER_VALID_HOOKS, @@ -53,14 +53,13 @@ static struct .term = IPT_ERROR_INIT, /* ERROR */ }; -static struct xt_table __packet_filter = { +static struct xt_table packet_filter = { .name = "filter", .valid_hooks = FILTER_VALID_HOOKS, .lock = RW_LOCK_UNLOCKED, .me = THIS_MODULE, .af = AF_INET, }; -static struct xt_table *packet_filter; /* The work comes in here from netfilter.c. */ static unsigned int @@ -70,7 +69,7 @@ ipt_hook(unsigned int hook, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - return ipt_do_table(skb, hook, in, out, packet_filter); + return ipt_do_table(skb, hook, in, out, init_net.ipv4.iptable_filter); } static unsigned int @@ -89,7 +88,7 @@ ipt_local_out_hook(unsigned int hook, return NF_ACCEPT; } - return ipt_do_table(skb, hook, in, out, packet_filter); + return ipt_do_table(skb, hook, in, out, init_net.ipv4.iptable_filter); } static struct nf_hook_ops ipt_ops[] __read_mostly = { @@ -120,6 +119,26 @@ static struct nf_hook_ops ipt_ops[] __read_mostly = { static int forward = NF_ACCEPT; module_param(forward, bool, 0000); +static int __net_init iptable_filter_net_init(struct net *net) +{ + /* Register table */ + net->ipv4.iptable_filter = + ipt_register_table(net, &packet_filter, &initial_table.repl); + if (IS_ERR(net->ipv4.iptable_filter)) + return PTR_ERR(net->ipv4.iptable_filter); + return 0; +} + +static void __net_exit iptable_filter_net_exit(struct net *net) +{ + ipt_unregister_table(net->ipv4.iptable_filter); +} + +static struct pernet_operations iptable_filter_net_ops = { + .init = iptable_filter_net_init, + .exit = iptable_filter_net_exit, +}; + static int __init iptable_filter_init(void) { int ret; @@ -132,11 +151,9 @@ static int __init iptable_filter_init(void) /* Entry 1 is the FORWARD hook */ initial_table.entries[1].target.verdict = -forward - 1; - /* Register table */ - packet_filter = ipt_register_table(&init_net, &__packet_filter, - &initial_table.repl); - if (IS_ERR(packet_filter)) - return PTR_ERR(packet_filter); + ret = register_pernet_subsys(&iptable_filter_net_ops); + if (ret < 0) + return ret; /* Register hooks */ ret = nf_register_hooks(ipt_ops, ARRAY_SIZE(ipt_ops)); @@ -146,14 +163,14 @@ static int __init iptable_filter_init(void) return ret; cleanup_table: - ipt_unregister_table(packet_filter); + unregister_pernet_subsys(&iptable_filter_net_ops); return ret; } static void __exit iptable_filter_fini(void) { nf_unregister_hooks(ipt_ops, ARRAY_SIZE(ipt_ops)); - ipt_unregister_table(packet_filter); + unregister_pernet_subsys(&iptable_filter_net_ops); } module_init(iptable_filter_init); diff --git a/net/ipv4/netfilter/iptable_mangle.c b/net/ipv4/netfilter/iptable_mangle.c index 292f2ed..c55a210 100644 --- a/net/ipv4/netfilter/iptable_mangle.c +++ b/net/ipv4/netfilter/iptable_mangle.c @@ -33,7 +33,7 @@ static struct struct ipt_replace repl; struct ipt_standard entries[5]; struct ipt_error term; -} initial_table __initdata = { +} initial_table __net_initdata = { .repl = { .name = "mangle", .valid_hooks = MANGLE_VALID_HOOKS, @@ -64,14 +64,13 @@ static struct .term = IPT_ERROR_INIT, /* ERROR */ }; -static struct xt_table __packet_mangler = { +static struct xt_table packet_mangler = { .name = "mangle", .valid_hooks = MANGLE_VALID_HOOKS, .lock = RW_LOCK_UNLOCKED, .me = THIS_MODULE, .af = AF_INET, }; -static struct xt_table *packet_mangler; /* The work comes in here from netfilter.c. */ static unsigned int @@ -81,7 +80,7 @@ ipt_route_hook(unsigned int hook, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - return ipt_do_table(skb, hook, in, out, packet_mangler); + return ipt_do_table(skb, hook, in, out, init_net.ipv4.iptable_mangle); } static unsigned int @@ -113,7 +112,7 @@ ipt_local_hook(unsigned int hook, daddr = iph->daddr; tos = iph->tos; - ret = ipt_do_table(skb, hook, in, out, packet_mangler); + ret = ipt_do_table(skb, hook, in, out, init_net.ipv4.iptable_mangle); /* Reroute for ANY change. */ if (ret != NF_DROP && ret != NF_STOLEN && ret != NF_QUEUE) { iph = ip_hdr(skb); @@ -167,15 +166,33 @@ static struct nf_hook_ops ipt_ops[] __read_mostly = { }, }; +static int __net_init iptable_mangle_net_init(struct net *net) +{ + /* Register table */ + net->ipv4.iptable_mangle = + ipt_register_table(net, &packet_mangler, &initial_table.repl); + if (IS_ERR(net->ipv4.iptable_mangle)) + return PTR_ERR(net->ipv4.iptable_mangle); + return 0; +} + +static void __net_exit iptable_mangle_net_exit(struct net *net) +{ + ipt_unregister_table(net->ipv4.iptable_mangle); +} + +static struct pernet_operations iptable_mangle_net_ops = { + .init = iptable_mangle_net_init, + .exit = iptable_mangle_net_exit, +}; + static int __init iptable_mangle_init(void) { int ret; - /* Register table */ - packet_mangler = ipt_register_table(&init_net, &__packet_mangler, - &initial_table.repl); - if (IS_ERR(packet_mangler)) - return PTR_ERR(packet_mangler); + ret = register_pernet_subsys(&iptable_mangle_net_ops); + if (ret < 0) + return ret; /* Register hooks */ ret = nf_register_hooks(ipt_ops, ARRAY_SIZE(ipt_ops)); @@ -185,14 +202,14 @@ static int __init iptable_mangle_init(void) return ret; cleanup_table: - ipt_unregister_table(packet_mangler); + unregister_pernet_subsys(&iptable_mangle_net_ops); return ret; } static void __exit iptable_mangle_fini(void) { nf_unregister_hooks(ipt_ops, ARRAY_SIZE(ipt_ops)); - ipt_unregister_table(packet_mangler); + unregister_pernet_subsys(&iptable_mangle_net_ops); } module_init(iptable_mangle_init); diff --git a/net/ipv4/netfilter/iptable_raw.c b/net/ipv4/netfilter/iptable_raw.c index dab863d..e41fe8c 100644 --- a/net/ipv4/netfilter/iptable_raw.c +++ b/net/ipv4/netfilter/iptable_raw.c @@ -14,7 +14,7 @@ static struct struct ipt_replace repl; struct ipt_standard entries[2]; struct ipt_error term; -} initial_table __initdata = { +} initial_table __net_initdata = { .repl = { .name = "raw", .valid_hooks = RAW_VALID_HOOKS, @@ -36,14 +36,13 @@ static struct .term = IPT_ERROR_INIT, /* ERROR */ }; -static struct xt_table __packet_raw = { +static struct xt_table packet_raw = { .name = "raw", .valid_hooks = RAW_VALID_HOOKS, .lock = RW_LOCK_UNLOCKED, .me = THIS_MODULE, .af = AF_INET, }; -static struct xt_table *packet_raw; /* The work comes in here from netfilter.c. */ static unsigned int @@ -53,7 +52,7 @@ ipt_hook(unsigned int hook, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - return ipt_do_table(skb, hook, in, out, packet_raw); + return ipt_do_table(skb, hook, in, out, init_net.ipv4.iptable_raw); } static unsigned int @@ -71,7 +70,7 @@ ipt_local_hook(unsigned int hook, "packet.\n"); return NF_ACCEPT; } - return ipt_do_table(skb, hook, in, out, packet_raw); + return ipt_do_table(skb, hook, in, out, init_net.ipv4.iptable_raw); } /* 'raw' is the very first table. */ @@ -92,15 +91,33 @@ static struct nf_hook_ops ipt_ops[] __read_mostly = { }, }; +static int __net_init iptable_raw_net_init(struct net *net) +{ + /* Register table */ + net->ipv4.iptable_raw = + ipt_register_table(net, &packet_raw, &initial_table.repl); + if (IS_ERR(net->ipv4.iptable_raw)) + return PTR_ERR(net->ipv4.iptable_raw); + return 0; +} + +static void __net_exit iptable_raw_net_exit(struct net *net) +{ + ipt_unregister_table(net->ipv4.iptable_raw); +} + +static struct pernet_operations iptable_raw_net_ops = { + .init = iptable_raw_net_init, + .exit = iptable_raw_net_exit, +}; + static int __init iptable_raw_init(void) { int ret; - /* Register table */ - packet_raw = ipt_register_table(&init_net, &__packet_raw, - &initial_table.repl); - if (IS_ERR(packet_raw)) - return PTR_ERR(packet_raw); + ret = register_pernet_subsys(&iptable_raw_net_ops); + if (ret < 0) + return ret; /* Register hooks */ ret = nf_register_hooks(ipt_ops, ARRAY_SIZE(ipt_ops)); @@ -110,14 +127,14 @@ static int __init iptable_raw_init(void) return ret; cleanup_table: - ipt_unregister_table(packet_raw); + unregister_pernet_subsys(&iptable_raw_net_ops); return ret; } static void __exit iptable_raw_fini(void) { nf_unregister_hooks(ipt_ops, ARRAY_SIZE(ipt_ops)); - ipt_unregister_table(packet_raw); + unregister_pernet_subsys(&iptable_raw_net_ops); } module_init(iptable_raw_init); |
