expect: add new callback interface while keeping backward compatibility

This patch the new expectation callback interface. This change is
like 20ed81b10714dfe78e31e9721e2d4f42b4beabb2 but related to
expectations. The netlink message contains the portID that is useful
to identify the origin of the message.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/internal/object.h b/include/internal/object.h
index cd06b88..04d64b6 100644
--- a/include/internal/object.h
+++ b/include/internal/object.h
@@ -34,6 +34,12 @@ struct nfct_handle {
 	int			(*expect_cb)(enum nf_conntrack_msg_type type, 
 					     struct nf_expect *exp,
 					     void *data);
+
+	/* second version of the expect callback: it includes netlink header */
+	int			(*expect_cb2)(const struct nlmsghdr *nlh,
+					      enum nf_conntrack_msg_type type, 
+					      struct nf_expect *exp,
+					      void *data);
 };
 
 /* container used to pass data to nfnl callbacks */