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netfilter: arptables in netns for real

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IN, FORWARD -- grab netns from in device, OUT -- from out device.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexey Dobriyan 2008-07-26 17:48:59 -07:00 committed by David S. Miller
parent f858b4869a
commit 3918fed5f3
1 changed files with 30 additions and 9 deletions
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39
net/ipv4/netfilter/arptable_filter.c
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@ -55,32 +55,53 @@ static struct xt_table packet_filter = {
}; };
/* The work comes in here from netfilter.c */ /* The work comes in here from netfilter.c */
static unsigned int arpt_hook(unsigned int hook, static unsigned int arpt_in_hook(unsigned int hook,
struct sk_buff *skb, struct sk_buff *skb,
const struct net_device *in, const struct net_device *in,
const struct net_device *out, const struct net_device *out,
int (*okfn)(struct sk_buff *)) int (*okfn)(struct sk_buff *))
{ {
return arpt_do_table(skb, hook, in, out, init_net.ipv4.arptable_filter); return arpt_do_table(skb, hook, in, out,
dev_net(in)->ipv4.arptable_filter);
}
static unsigned int arpt_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 arpt_do_table(skb, hook, in, out,
dev_net(out)->ipv4.arptable_filter);
}
static unsigned int arpt_forward_hook(unsigned int hook,
struct sk_buff *skb,
const struct net_device *in,
const struct net_device *out,
int (*okfn)(struct sk_buff *))
{
return arpt_do_table(skb, hook, in, out,
dev_net(in)->ipv4.arptable_filter);
} }
static struct nf_hook_ops arpt_ops[] __read_mostly = { static struct nf_hook_ops arpt_ops[] __read_mostly = {
{ {
.hook = arpt_hook, .hook = arpt_in_hook,
.owner = THIS_MODULE, .owner = THIS_MODULE,
.pf = NF_ARP, .pf = NF_ARP,
.hooknum = NF_ARP_IN, .hooknum = NF_ARP_IN,
.priority = NF_IP_PRI_FILTER, .priority = NF_IP_PRI_FILTER,
}, },
{ {
.hook = arpt_hook, .hook = arpt_out_hook,
.owner = THIS_MODULE, .owner = THIS_MODULE,
.pf = NF_ARP, .pf = NF_ARP,
.hooknum = NF_ARP_OUT, .hooknum = NF_ARP_OUT,
.priority = NF_IP_PRI_FILTER, .priority = NF_IP_PRI_FILTER,
}, },
{ {
.hook = arpt_hook, .hook = arpt_forward_hook,
.owner = THIS_MODULE, .owner = THIS_MODULE,
.pf = NF_ARP, .pf = NF_ARP,
.hooknum = NF_ARP_FORWARD, .hooknum = NF_ARP_FORWARD,