From: Gao feng <gaofeng@xxxxxxxxxxxxxx>
we can allow users in uninit net namespace to operate ipt_CLUSTERIP
now.
Signed-off-by: Gao feng <gaofeng@xxxxxxxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
---
net/ipv4/netfilter/ipt_CLUSTERIP.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index c93dfd2..ecd808a 100644
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -99,7 +99,8 @@ clusterip_config_put(struct clusterip_config *c)
static inline void
clusterip_config_entry_put(struct clusterip_config *c)
{
- struct clusterip_net *cn = net_generic(&init_net, clusterip_net_id);
+ struct net *net = dev_net(c->dev);
+ struct clusterip_net *cn = net_generic(net, clusterip_net_id);
local_bh_disable();
if (atomic_dec_and_lock(&c->entries, &cn->lock)) {
@@ -381,7 +382,7 @@ static int clusterip_tg_check(const struct xt_tgchk_param *par)
/* FIXME: further sanity checks */
- config = clusterip_config_find_get(&init_net, e->ip.dst.s_addr, 1);
+ config = clusterip_config_find_get(par->net, e->ip.dst.s_addr, 1);
if (!config) {
if (!(cipinfo->flags & CLUSTERIP_FLAG_NEW)) {
pr_info("no config found for %pI4, need 'new'\n",
@@ -395,7 +396,7 @@ static int clusterip_tg_check(const struct xt_tgchk_param *par)
return -EINVAL;
}
- dev = dev_get_by_name(&init_net, e->ip.iniface);
+ dev = dev_get_by_name(par->net, e->ip.iniface);
if (!dev) {
pr_info("no such interface %s\n",
e->ip.iniface);
@@ -503,6 +504,7 @@ arp_mangle(unsigned int hook,
struct arphdr *arp = arp_hdr(skb);
struct arp_payload *payload;
struct clusterip_config *c;
+ struct net *net = dev_net(in ? in : out);
/* we don't care about non-ethernet and non-ipv4 ARP */
if (arp->ar_hrd != htons(ARPHRD_ETHER) ||
@@ -519,7 +521,7 @@ arp_mangle(unsigned int hook,
/* if there is no clusterip configuration for the arp reply's
* source ip, we don't want to mangle it */
- c = clusterip_config_find_get(&init_net, payload->src_ip, 0);
+ c = clusterip_config_find_get(net, payload->src_ip, 0);
if (!c)
return NF_ACCEPT;
--
1.7.10.4
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