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authorYasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>2007-07-07 22:23:42 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-07-10 22:17:18 -0700
commitceceae1b1555a9afcb8dacf90df5fa1f20fd5466 (patch)
tree008841923a297be92566c8da42f516ffe6c2cdc1 /include/net/netfilter
parentecfab2c9fe5597221c2b30dec48634a2361a0d08 (diff)
[NETFILTER]: nf_conntrack: use extension infrastructure for helper
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/netfilter')
-rw-r--r--include/net/netfilter/nf_conntrack.h26
-rw-r--r--include/net/netfilter/nf_conntrack_core.h3
-rw-r--r--include/net/netfilter/nf_conntrack_extend.h3
-rw-r--r--include/net/netfilter/nf_conntrack_helper.h5
4 files changed, 11 insertions, 26 deletions
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index c31382d3ef1..f1e0fee9aa9 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -294,32 +294,6 @@ static inline struct nf_conn_nat *nfct_nat(const struct nf_conn *ct)
offset = ALIGN(offset, __alignof__(struct nf_conn_nat));
return (struct nf_conn_nat *) ((void *)ct + offset);
}
-
-static inline struct nf_conn_help *nfct_help(const struct nf_conn *ct)
-{
- unsigned int offset = sizeof(struct nf_conn);
-
- if (!(ct->features & NF_CT_F_HELP))
- return NULL;
- if (ct->features & NF_CT_F_NAT) {
- offset = ALIGN(offset, __alignof__(struct nf_conn_nat));
- offset += sizeof(struct nf_conn_nat);
- }
-
- offset = ALIGN(offset, __alignof__(struct nf_conn_help));
- return (struct nf_conn_help *) ((void *)ct + offset);
-}
-#else /* No NAT */
-static inline struct nf_conn_help *nfct_help(const struct nf_conn *ct)
-{
- unsigned int offset = sizeof(struct nf_conn);
-
- if (!(ct->features & NF_CT_F_HELP))
- return NULL;
-
- offset = ALIGN(offset, __alignof__(struct nf_conn_help));
- return (struct nf_conn_help *) ((void *)ct + offset);
-}
#endif /* CONFIG_NF_NAT_NEEDED */
#endif /* __KERNEL__ */
#endif /* _NF_CONNTRACK_H */
diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h
index 9fb906688ff..3bf7d05ea64 100644
--- a/include/net/netfilter/nf_conntrack_core.h
+++ b/include/net/netfilter/nf_conntrack_core.h
@@ -30,6 +30,9 @@ extern void nf_conntrack_cleanup(void);
extern int nf_conntrack_proto_init(void);
extern void nf_conntrack_proto_fini(void);
+extern int nf_conntrack_helper_init(void);
+extern void nf_conntrack_helper_fini(void);
+
struct nf_conntrack_l3proto;
extern struct nf_conntrack_l3proto *nf_ct_find_l3proto(u_int16_t pf);
/* Like above, but you already have conntrack read lock. */
diff --git a/include/net/netfilter/nf_conntrack_extend.h b/include/net/netfilter/nf_conntrack_extend.h
index 8a988d13646..05357dc5d2d 100644
--- a/include/net/netfilter/nf_conntrack_extend.h
+++ b/include/net/netfilter/nf_conntrack_extend.h
@@ -5,9 +5,12 @@
enum nf_ct_ext_id
{
+ NF_CT_EXT_HELPER,
NF_CT_EXT_NUM,
};
+#define NF_CT_EXT_HELPER_TYPE struct nf_conn_help
+
/* Extensions: optional stuff which isn't permanently in struct. */
struct nf_ct_ext {
u8 offset[NF_CT_EXT_NUM];
diff --git a/include/net/netfilter/nf_conntrack_helper.h b/include/net/netfilter/nf_conntrack_helper.h
index 8c72ac9f0ab..b43a75ba44a 100644
--- a/include/net/netfilter/nf_conntrack_helper.h
+++ b/include/net/netfilter/nf_conntrack_helper.h
@@ -10,6 +10,7 @@
#ifndef _NF_CONNTRACK_HELPER_H
#define _NF_CONNTRACK_HELPER_H
#include <net/netfilter/nf_conntrack.h>
+#include <net/netfilter/nf_conntrack_extend.h>
struct module;
@@ -52,4 +53,8 @@ extern void nf_ct_helper_put(struct nf_conntrack_helper *helper);
extern int nf_conntrack_helper_register(struct nf_conntrack_helper *);
extern void nf_conntrack_helper_unregister(struct nf_conntrack_helper *);
+static inline struct nf_conn_help *nfct_help(const struct nf_conn *ct)
+{
+ return nf_ct_ext_find(ct, NF_CT_EXT_HELPER);
+}
#endif /*_NF_CONNTRACK_HELPER_H*/