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authorPablo Neira Ayuso <pablo@netfilter.org>2006-01-05 12:19:05 -0800
committerDavid S. Miller <davem@davemloft.net>2006-01-05 12:19:05 -0800
commitc1d10adb4a521de5760112853f42aaeefcec96eb (patch)
treec7ba283aa0b9016c8403fa6589b7b3418f71acda /include/net
parent205d67c7d942c057648148fefb17e46f77e3efd6 (diff)
downloadop-kernel-dev-c1d10adb4a521de5760112853f42aaeefcec96eb.zip
op-kernel-dev-c1d10adb4a521de5760112853f42aaeefcec96eb.tar.gz
[NETFILTER]: Add ctnetlink port for nf_conntrack
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/netfilter/nf_conntrack.h31
-rw-r--r--include/net/netfilter/nf_conntrack_helper.h2
-rw-r--r--include/net/netfilter/nf_conntrack_l3proto.h15
-rw-r--r--include/net/netfilter/nf_conntrack_protocol.h26
4 files changed, 72 insertions, 2 deletions
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index cc48256..64b82b7 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -94,6 +94,9 @@ struct nf_conn
/* Current number of expected connections */
unsigned int expecting;
+ /* Unique ID that identifies this conntrack*/
+ unsigned int id;
+
/* Helper. if any */
struct nf_conntrack_helper *helper;
@@ -140,6 +143,9 @@ struct nf_conntrack_expect
/* Usage count. */
atomic_t use;
+ /* Unique ID */
+ unsigned int id;
+
/* Flags */
unsigned int flags;
@@ -190,6 +196,31 @@ static inline void nf_ct_put(struct nf_conn *ct)
nf_conntrack_put(&ct->ct_general);
}
+extern struct nf_conntrack_tuple_hash *
+__nf_conntrack_find(const struct nf_conntrack_tuple *tuple,
+ const struct nf_conn *ignored_conntrack);
+
+extern void nf_conntrack_hash_insert(struct nf_conn *ct);
+
+extern struct nf_conntrack_expect *
+__nf_conntrack_expect_find(const struct nf_conntrack_tuple *tuple);
+
+extern struct nf_conntrack_expect *
+nf_conntrack_expect_find(const struct nf_conntrack_tuple *tuple);
+
+extern void nf_ct_unlink_expect(struct nf_conntrack_expect *exp);
+
+extern void nf_ct_remove_expectations(struct nf_conn *ct);
+
+extern void nf_conntrack_flush(void);
+
+extern struct nf_conntrack_helper *
+nf_ct_helper_find_get( const struct nf_conntrack_tuple *tuple);
+extern void nf_ct_helper_put(struct nf_conntrack_helper *helper);
+
+extern struct nf_conntrack_helper *
+__nf_conntrack_helper_find_byname(const char *name);
+
/* call to create an explicit dependency on nf_conntrack. */
extern void need_nf_conntrack(void);
diff --git a/include/net/netfilter/nf_conntrack_helper.h b/include/net/netfilter/nf_conntrack_helper.h
index 5a66b2a..86ec817 100644
--- a/include/net/netfilter/nf_conntrack_helper.h
+++ b/include/net/netfilter/nf_conntrack_helper.h
@@ -33,6 +33,8 @@ struct nf_conntrack_helper
unsigned int protoff,
struct nf_conn *ct,
enum ip_conntrack_info conntrackinfo);
+
+ int (*to_nfattr)(struct sk_buff *skb, const struct nf_conn *ct);
};
extern int nf_conntrack_helper_register(struct nf_conntrack_helper *);
diff --git a/include/net/netfilter/nf_conntrack_l3proto.h b/include/net/netfilter/nf_conntrack_l3proto.h
index 01663e5..67856eb 100644
--- a/include/net/netfilter/nf_conntrack_l3proto.h
+++ b/include/net/netfilter/nf_conntrack_l3proto.h
@@ -14,6 +14,8 @@
#include <linux/seq_file.h>
#include <net/netfilter/nf_conntrack.h>
+struct nfattr;
+
struct nf_conntrack_l3proto
{
/* Next pointer. */
@@ -70,6 +72,12 @@ struct nf_conntrack_l3proto
u_int32_t (*get_features)(const struct nf_conntrack_tuple *tuple);
+ int (*tuple_to_nfattr)(struct sk_buff *skb,
+ const struct nf_conntrack_tuple *t);
+
+ int (*nfattr_to_tuple)(struct nfattr *tb[],
+ struct nf_conntrack_tuple *t);
+
/* Module (if any) which this is connected to. */
struct module *me;
};
@@ -81,11 +89,16 @@ extern int nf_conntrack_l3proto_register(struct nf_conntrack_l3proto *proto);
extern void nf_conntrack_l3proto_unregister(struct nf_conntrack_l3proto *proto);
static inline struct nf_conntrack_l3proto *
-nf_ct_find_l3proto(u_int16_t l3proto)
+__nf_ct_l3proto_find(u_int16_t l3proto)
{
return nf_ct_l3protos[l3proto];
}
+extern struct nf_conntrack_l3proto *
+nf_ct_l3proto_find_get(u_int16_t l3proto);
+
+extern void nf_ct_l3proto_put(struct nf_conntrack_l3proto *p);
+
/* Existing built-in protocols */
extern struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv4;
extern struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv6;
diff --git a/include/net/netfilter/nf_conntrack_protocol.h b/include/net/netfilter/nf_conntrack_protocol.h
index b3afda3..1f33737 100644
--- a/include/net/netfilter/nf_conntrack_protocol.h
+++ b/include/net/netfilter/nf_conntrack_protocol.h
@@ -12,6 +12,7 @@
#include <net/netfilter/nf_conntrack.h>
struct seq_file;
+struct nfattr;
struct nf_conntrack_protocol
{
@@ -66,6 +67,18 @@ struct nf_conntrack_protocol
enum ip_conntrack_info *ctinfo,
int pf, unsigned int hooknum);
+ /* convert protoinfo to nfnetink attributes */
+ int (*to_nfattr)(struct sk_buff *skb, struct nfattr *nfa,
+ const struct nf_conn *ct);
+
+ /* convert nfnetlink attributes to protoinfo */
+ int (*from_nfattr)(struct nfattr *tb[], struct nf_conn *ct);
+
+ int (*tuple_to_nfattr)(struct sk_buff *skb,
+ const struct nf_conntrack_tuple *t);
+ int (*nfattr_to_tuple)(struct nfattr *tb[],
+ struct nf_conntrack_tuple *t);
+
/* Module (if any) which this is connected to. */
struct module *me;
};
@@ -80,12 +93,23 @@ extern struct nf_conntrack_protocol nf_conntrack_generic_protocol;
extern struct nf_conntrack_protocol **nf_ct_protos[PF_MAX];
extern struct nf_conntrack_protocol *
-nf_ct_find_proto(u_int16_t l3proto, u_int8_t protocol);
+__nf_ct_proto_find(u_int16_t l3proto, u_int8_t protocol);
+
+extern struct nf_conntrack_protocol *
+nf_ct_proto_find_get(u_int16_t l3proto, u_int8_t protocol);
+
+extern void nf_ct_proto_put(struct nf_conntrack_protocol *p);
/* Protocol registration. */
extern int nf_conntrack_protocol_register(struct nf_conntrack_protocol *proto);
extern void nf_conntrack_protocol_unregister(struct nf_conntrack_protocol *proto);
+/* Generic netlink helpers */
+extern int nf_ct_port_tuple_to_nfattr(struct sk_buff *skb,
+ const struct nf_conntrack_tuple *tuple);
+extern int nf_ct_port_nfattr_to_tuple(struct nfattr *tb[],
+ struct nf_conntrack_tuple *t);
+
/* Log invalid packets */
extern unsigned int nf_ct_log_invalid;
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