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netfilter: netns ebtables: ebtable_nat in netns

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Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Alexey Dobriyan 2008-11-04 14:30:46 +01:00 committed by Patrick McHardy
parent 4aad10938d
commit b71b30a626
2 changed files with 33 additions and 15 deletions
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1
include/net/netns/x_tables.h
View File

@ -10,5 +10,6 @@ struct netns_xt {
struct list_head tables[NFPROTO_NUMPROTO];
struct ebt_table *broute_table;
struct ebt_table *frame_filter;
struct ebt_table *frame_nat;
};
#endif

47
net/bridge/netfilter/ebtable_nat.c
View File

@ -50,48 +50,47 @@ static int check(const struct ebt_table_info *info, unsigned int valid_hooks)
return 0;
}
static struct ebt_table __frame_nat =
static struct ebt_table frame_nat =
{
.name = "nat",
.table = &initial_table,
.valid_hooks = NAT_VALID_HOOKS,
.lock = __RW_LOCK_UNLOCKED(__frame_nat.lock),
.lock = __RW_LOCK_UNLOCKED(frame_nat.lock),
.check = check,
.me = THIS_MODULE,
};
static struct ebt_table *frame_nat;
static unsigned int
ebt_nat_dst(unsigned int hook, struct sk_buff *skb, const struct net_device *in
ebt_nat_in(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_nat);
return ebt_do_table(hook, skb, in, out, dev_net(in)->xt.frame_nat);
}
static unsigned int
ebt_nat_src(unsigned int hook, struct sk_buff *skb, const struct net_device *in
ebt_nat_out(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_nat);
return ebt_do_table(hook, skb, in, out, dev_net(out)->xt.frame_nat);
}
static struct nf_hook_ops ebt_ops_nat[] __read_mostly = {
{
.hook = ebt_nat_dst,
.hook = ebt_nat_out,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_LOCAL_OUT,
.priority = NF_BR_PRI_NAT_DST_OTHER,
},
{
.hook = ebt_nat_src,
.hook = ebt_nat_out,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_POST_ROUTING,
.priority = NF_BR_PRI_NAT_SRC,
},
{
.hook = ebt_nat_dst,
.hook = ebt_nat_in,
.owner = THIS_MODULE,
.pf = PF_BRIDGE,
.hooknum = NF_BR_PRE_ROUTING,
@ -99,23 +98,41 @@ static struct nf_hook_ops ebt_ops_nat[] __read_mostly = {
},
};
static int __net_init frame_nat_net_init(struct net *net)
{
net->xt.frame_nat = ebt_register_table(net, &frame_nat);
if (IS_ERR(net->xt.frame_nat))
return PTR_ERR(net->xt.frame_nat);
return 0;
}
static void __net_exit frame_nat_net_exit(struct net *net)
{
ebt_unregister_table(net->xt.frame_nat);
}
static struct pernet_operations frame_nat_net_ops = {
.init = frame_nat_net_init,
.exit = frame_nat_net_exit,
};
static int __init ebtable_nat_init(void)
{
int ret;
frame_nat = ebt_register_table(&init_net, &__frame_nat);
if (IS_ERR(frame_nat))
return PTR_ERR(frame_nat);
ret = register_pernet_subsys(&frame_nat_net_ops);
if (ret < 0)
return ret;
ret = nf_register_hooks(ebt_ops_nat, ARRAY_SIZE(ebt_ops_nat));
if (ret < 0)
ebt_unregister_table(frame_nat);
unregister_pernet_subsys(&frame_nat_net_ops);
return ret;
}
static void __exit ebtable_nat_fini(void)
{
nf_unregister_hooks(ebt_ops_nat, ARRAY_SIZE(ebt_ops_nat));
ebt_unregister_table(frame_nat);
unregister_pernet_subsys(&frame_nat_net_ops);
}
module_init(ebtable_nat_init);