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authorPatrick McHardy <kaber@trash.net>2010-02-15 18:13:33 +0100
committerPatrick McHardy <kaber@trash.net>2010-02-15 18:13:33 +0100
commit5d0aa2ccd4699a01cfdf14886191c249d7b45a01 (patch)
tree6ea81b5eede26bd6a04bcc3cd79770c334139381 /include
parent8fea97ec1772bbf553d89187340ef624d548e115 (diff)
netfilter: nf_conntrack: add support for "conntrack zones"
Normally, each connection needs a unique identity. Conntrack zones allow to specify a numerical zone using the CT target, connections in different zones can use the same identity. Example: iptables -t raw -A PREROUTING -i veth0 -j CT --zone 1 iptables -t raw -A OUTPUT -o veth1 -j CT --zone 1 Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/netfilter/xt_CT.h2
-rw-r--r--include/net/ip.h3
-rw-r--r--include/net/ipv6.h3
-rw-r--r--include/net/netfilter/nf_conntrack.h5
-rw-r--r--include/net/netfilter/nf_conntrack_core.h3
-rw-r--r--include/net/netfilter/nf_conntrack_expect.h9
-rw-r--r--include/net/netfilter/nf_conntrack_extend.h2
-rw-r--r--include/net/netfilter/nf_conntrack_zones.h23
8 files changed, 43 insertions, 7 deletions
diff --git a/include/linux/netfilter/xt_CT.h b/include/linux/netfilter/xt_CT.h
index 7fd0effe131..1b564106891 100644
--- a/include/linux/netfilter/xt_CT.h
+++ b/include/linux/netfilter/xt_CT.h
@@ -5,7 +5,7 @@
struct xt_ct_target_info {
u_int16_t flags;
- u_int16_t __unused;
+ u_int16_t zone;
u_int32_t ct_events;
u_int32_t exp_events;
char helper[16];
diff --git a/include/net/ip.h b/include/net/ip.h
index fb63371c07a..7bc47873e3f 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -352,8 +352,11 @@ enum ip_defrag_users {
IP_DEFRAG_LOCAL_DELIVER,
IP_DEFRAG_CALL_RA_CHAIN,
IP_DEFRAG_CONNTRACK_IN,
+ __IP_DEFRAG_CONNTRACK_IN_END = IP_DEFRAG_CONNTRACK_IN + USHORT_MAX,
IP_DEFRAG_CONNTRACK_OUT,
+ __IP_DEFRAG_CONNTRACK_OUT_END = IP_DEFRAG_CONNTRACK_OUT + USHORT_MAX,
IP_DEFRAG_CONNTRACK_BRIDGE_IN,
+ __IP_DEFRAG_CONNTRACK_BRIDGE_IN = IP_DEFRAG_CONNTRACK_BRIDGE_IN + USHORT_MAX,
IP_DEFRAG_VS_IN,
IP_DEFRAG_VS_OUT,
IP_DEFRAG_VS_FWD
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 299bbf5adfb..639ec53ea08 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -355,8 +355,11 @@ struct inet_frag_queue;
enum ip6_defrag_users {
IP6_DEFRAG_LOCAL_DELIVER,
IP6_DEFRAG_CONNTRACK_IN,
+ __IP6_DEFRAG_CONNTRACK_IN = IP6_DEFRAG_CONNTRACK_IN + USHORT_MAX,
IP6_DEFRAG_CONNTRACK_OUT,
+ __IP6_DEFRAG_CONNTRACK_OUT = IP6_DEFRAG_CONNTRACK_OUT + USHORT_MAX,
IP6_DEFRAG_CONNTRACK_BRIDGE_IN,
+ __IP6_DEFRAG_CONNTRACK_BRIDGE_IN = IP6_DEFRAG_CONNTRACK_BRIDGE_IN + USHORT_MAX,
};
struct ip6_create_arg {
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index 5b7d8835523..bde095f7e84 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -198,7 +198,8 @@ extern void *nf_ct_alloc_hashtable(unsigned int *sizep, int *vmalloced, int null
extern void nf_ct_free_hashtable(void *hash, int vmalloced, unsigned int size);
extern struct nf_conntrack_tuple_hash *
-__nf_conntrack_find(struct net *net, const struct nf_conntrack_tuple *tuple);
+__nf_conntrack_find(struct net *net, u16 zone,
+ const struct nf_conntrack_tuple *tuple);
extern void nf_conntrack_hash_insert(struct nf_conn *ct);
extern void nf_ct_delete_from_lists(struct nf_conn *ct);
@@ -267,7 +268,7 @@ extern void
nf_ct_iterate_cleanup(struct net *net, int (*iter)(struct nf_conn *i, void *data), void *data);
extern void nf_conntrack_free(struct nf_conn *ct);
extern struct nf_conn *
-nf_conntrack_alloc(struct net *net,
+nf_conntrack_alloc(struct net *net, u16 zone,
const struct nf_conntrack_tuple *orig,
const struct nf_conntrack_tuple *repl,
gfp_t gfp);
diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h
index 5a449b44ba3..dffde8e6920 100644
--- a/include/net/netfilter/nf_conntrack_core.h
+++ b/include/net/netfilter/nf_conntrack_core.h
@@ -49,7 +49,8 @@ nf_ct_invert_tuple(struct nf_conntrack_tuple *inverse,
/* Find a connection corresponding to a tuple. */
extern struct nf_conntrack_tuple_hash *
-nf_conntrack_find_get(struct net *net, const struct nf_conntrack_tuple *tuple);
+nf_conntrack_find_get(struct net *net, u16 zone,
+ const struct nf_conntrack_tuple *tuple);
extern int __nf_conntrack_confirm(struct sk_buff *skb);
diff --git a/include/net/netfilter/nf_conntrack_expect.h b/include/net/netfilter/nf_conntrack_expect.h
index 4b47ec19ef3..11e815084fc 100644
--- a/include/net/netfilter/nf_conntrack_expect.h
+++ b/include/net/netfilter/nf_conntrack_expect.h
@@ -74,13 +74,16 @@ int nf_conntrack_expect_init(struct net *net);
void nf_conntrack_expect_fini(struct net *net);
struct nf_conntrack_expect *
-__nf_ct_expect_find(struct net *net, const struct nf_conntrack_tuple *tuple);
+__nf_ct_expect_find(struct net *net, u16 zone,
+ const struct nf_conntrack_tuple *tuple);
struct nf_conntrack_expect *
-nf_ct_expect_find_get(struct net *net, const struct nf_conntrack_tuple *tuple);
+nf_ct_expect_find_get(struct net *net, u16 zone,
+ const struct nf_conntrack_tuple *tuple);
struct nf_conntrack_expect *
-nf_ct_find_expectation(struct net *net, const struct nf_conntrack_tuple *tuple);
+nf_ct_find_expectation(struct net *net, u16 zone,
+ const struct nf_conntrack_tuple *tuple);
void nf_ct_unlink_expect(struct nf_conntrack_expect *exp);
void nf_ct_remove_expectations(struct nf_conn *ct);
diff --git a/include/net/netfilter/nf_conntrack_extend.h b/include/net/netfilter/nf_conntrack_extend.h
index e192dc17c58..2d2a1f9a61d 100644
--- a/include/net/netfilter/nf_conntrack_extend.h
+++ b/include/net/netfilter/nf_conntrack_extend.h
@@ -8,6 +8,7 @@ enum nf_ct_ext_id {
NF_CT_EXT_NAT,
NF_CT_EXT_ACCT,
NF_CT_EXT_ECACHE,
+ NF_CT_EXT_ZONE,
NF_CT_EXT_NUM,
};
@@ -15,6 +16,7 @@ enum nf_ct_ext_id {
#define NF_CT_EXT_NAT_TYPE struct nf_conn_nat
#define NF_CT_EXT_ACCT_TYPE struct nf_conn_counter
#define NF_CT_EXT_ECACHE_TYPE struct nf_conntrack_ecache
+#define NF_CT_EXT_ZONE_TYPE struct nf_conntrack_zone
/* Extensions: optional stuff which isn't permanently in struct. */
struct nf_ct_ext {
diff --git a/include/net/netfilter/nf_conntrack_zones.h b/include/net/netfilter/nf_conntrack_zones.h
new file mode 100644
index 00000000000..0bbb2bd51e8
--- /dev/null
+++ b/include/net/netfilter/nf_conntrack_zones.h
@@ -0,0 +1,23 @@
+#ifndef _NF_CONNTRACK_ZONES_H
+#define _NF_CONNTRACK_ZONES_H
+
+#include <net/netfilter/nf_conntrack_extend.h>
+
+#define NF_CT_DEFAULT_ZONE 0
+
+struct nf_conntrack_zone {
+ u16 id;
+};
+
+static inline u16 nf_ct_zone(const struct nf_conn *ct)
+{
+#ifdef CONFIG_NF_CONNTRACK_ZONES
+ struct nf_conntrack_zone *nf_ct_zone;
+ nf_ct_zone = nf_ct_ext_find(ct, NF_CT_EXT_ZONE);
+ if (nf_ct_zone)
+ return nf_ct_zone->id;
+#endif
+ return NF_CT_DEFAULT_ZONE;
+}
+
+#endif /* _NF_CONNTRACK_ZONES_H */