[NETFILTER]: x_tables: per-netns xt_tables

In fact all we want is per-netns set of rules, however doing that will
unnecessary complicate routines such as ipt_hook()/ipt_do_table, so
make full xt_table array per-netns.

Every user stubbed with init_net for a while.

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 12 insertions, 12 deletions

diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index 060de950e6a..0da50a4a657 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -870,7 +870,7 @@ static int get_info(void __user *user, int *len, int compat)
 	if (compat)
 		xt_compat_lock(NF_ARP);
 #endif
-	t = try_then_request_module(xt_find_table_lock(NF_ARP, name),
+	t = try_then_request_module(xt_find_table_lock(&init_net, NF_ARP, name),
 				    "arptable_%s", name);
 	if (t && !IS_ERR(t)) {
 		struct arpt_getinfo info;
@@ -926,7 +926,7 @@ static int get_entries(struct arpt_get_entries __user *uptr, int *len)
 		return -EINVAL;
 	}
 
-	t = xt_find_table_lock(NF_ARP, get.name);
+	t = xt_find_table_lock(&init_net, NF_ARP, get.name);
 	if (t && !IS_ERR(t)) {
 		struct xt_table_info *private = t->private;
 		duprintf("t->private->number = %u\n",
@@ -966,7 +966,7 @@ static int __do_replace(const char *name, unsigned int valid_hooks,
 		goto out;
 	}
 
-	t = try_then_request_module(xt_find_table_lock(NF_ARP, name),
+	t = try_then_request_module(xt_find_table_lock(&init_net, NF_ARP, name),
 				    "arptable_%s", name);
 	if (!t || IS_ERR(t)) {
 		ret = t ? PTR_ERR(t) : -ENOENT;
@@ -1132,7 +1132,7 @@ static int do_add_counters(void __user *user, unsigned int len, int compat)
 		goto free;
 	}
 
-	t = xt_find_table_lock(NF_ARP, name);
+	t = xt_find_table_lock(&init_net, NF_ARP, name);
 	if (!t || IS_ERR(t)) {
 		ret = t ? PTR_ERR(t) : -ENOENT;
 		goto free;
@@ -1604,7 +1604,7 @@ static int compat_get_entries(struct compat_arpt_get_entries __user *uptr,
 	}
 
 	xt_compat_lock(NF_ARP);
-	t = xt_find_table_lock(NF_ARP, get.name);
+	t = xt_find_table_lock(&init_net, NF_ARP, get.name);
 	if (t && !IS_ERR(t)) {
 		struct xt_table_info *private = t->private;
 		struct xt_table_info info;
@@ -1751,7 +1751,7 @@ int arpt_register_table(struct arpt_table *table,
 		return ret;
 	}
 
-	new_table = xt_register_table(table, &bootstrap, newinfo);
+	new_table = xt_register_table(&init_net, table, &bootstrap, newinfo);
 	if (IS_ERR(new_table)) {
 		xt_free_table_info(newinfo);
 		return PTR_ERR(new_table);
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index 1b7c09e4a00..bc22ea421a9 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -1112,7 +1112,7 @@ static int get_info(void __user *user, int *len, int compat)
 	if (compat)
 		xt_compat_lock(AF_INET);
 #endif
-	t = try_then_request_module(xt_find_table_lock(AF_INET, name),
+	t = try_then_request_module(xt_find_table_lock(&init_net, AF_INET, name),
 				    "iptable_%s", name);
 	if (t && !IS_ERR(t)) {
 		struct ipt_getinfo info;
@@ -1170,7 +1170,7 @@ get_entries(struct ipt_get_entries __user *uptr, int *len)
 		return -EINVAL;
 	}
 
-	t = xt_find_table_lock(AF_INET, get.name);
+	t = xt_find_table_lock(&init_net, AF_INET, get.name);
 	if (t && !IS_ERR(t)) {
 		struct xt_table_info *private = t->private;
 		duprintf("t->private->number = %u\n", private->number);
@@ -1208,7 +1208,7 @@ __do_replace(const char *name, unsigned int valid_hooks,
 		goto out;
 	}
 
-	t = try_then_request_module(xt_find_table_lock(AF_INET, name),
+	t = try_then_request_module(xt_find_table_lock(&init_net, AF_INET, name),
 				    "iptable_%s", name);
 	if (!t || IS_ERR(t)) {
 		ret = t ? PTR_ERR(t) : -ENOENT;
@@ -1383,7 +1383,7 @@ do_add_counters(void __user *user, unsigned int len, int compat)
 		goto free;
 	}
 
-	t = xt_find_table_lock(AF_INET, name);
+	t = xt_find_table_lock(&init_net, AF_INET, name);
 	if (!t || IS_ERR(t)) {
 		ret = t ? PTR_ERR(t) : -ENOENT;
 		goto free;
@@ -1924,7 +1924,7 @@ compat_get_entries(struct compat_ipt_get_entries __user *uptr, int *len)
 	}
 
 	xt_compat_lock(AF_INET);
-	t = xt_find_table_lock(AF_INET, get.name);
+	t = xt_find_table_lock(&init_net, AF_INET, get.name);
 	if (t && !IS_ERR(t)) {
 		struct xt_table_info *private = t->private;
 		struct xt_table_info info;
@@ -2075,7 +2075,7 @@ int ipt_register_table(struct xt_table *table, const struct ipt_replace *repl)
 		return ret;
 	}
 
-	new_table = xt_register_table(table, &bootstrap, newinfo);
+	new_table = xt_register_table(&init_net, table, &bootstrap, newinfo);
 	if (IS_ERR(new_table)) {
 		xt_free_table_info(newinfo);
 		return PTR_ERR(new_table);