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authorPablo Neira Ayuso <pablo@netfilter.org>2012-02-05 02:44:51 (GMT)
committerPablo Neira Ayuso <pablo@netfilter.org>2012-03-07 16:40:46 (GMT)
commit544d5c7d9f4d1ec4f170bc5bcc522012cb7704bc (patch)
treed7e4eff56efb23801a5ad0e4720efe13c68672ca /include/net
parent076a0ca02644657b13e4af363f487ced2942e9cb (diff)
downloadlinux-544d5c7d9f4d1ec4f170bc5bcc522012cb7704bc.tar.xz
netfilter: ctnetlink: allow to set expectfn for expectations
This patch allows you to set expectfn which is specifically used by the NAT side of most of the existing conntrack helpers. I have added a symbol map that uses a string as key to look up for the function that is attached to the expectation object. This is the best solution I came out with to solve this issue. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/netfilter/nf_conntrack_helper.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_conntrack_helper.h b/include/net/netfilter/nf_conntrack_helper.h
index f1c1311..5767dc2 100644
--- a/include/net/netfilter/nf_conntrack_helper.h
+++ b/include/net/netfilter/nf_conntrack_helper.h
@@ -69,4 +69,17 @@ extern int nf_conntrack_broadcast_help(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
unsigned int timeout);
+struct nf_ct_helper_expectfn {
+ struct list_head head;
+ const char *name;
+ void (*expectfn)(struct nf_conn *ct, struct nf_conntrack_expect *exp);
+};
+
+void nf_ct_helper_expectfn_register(struct nf_ct_helper_expectfn *n);
+void nf_ct_helper_expectfn_unregister(struct nf_ct_helper_expectfn *n);
+struct nf_ct_helper_expectfn *
+nf_ct_helper_expectfn_find_by_name(const char *name);
+struct nf_ct_helper_expectfn *
+nf_ct_helper_expectfn_find_by_symbol(const void *symbol);
+
#endif /*_NF_CONNTRACK_HELPER_H*/