netlink: add getter and check existence functions

This patch adds nl_get_conntrack and it changes the behaviour of
nl_exist_conntrack. Now, nl_get_conntrack requests the kernel for
a conntrack and updates the cached entry. On the other hand,
nl_exist_conntrack only inquiries for the existence of the
entry.

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

1 files changed, 4 insertions, 0 deletions

diff --git a/include/netlink.h b/include/netlink.h
index a46fe11..a7b7dda 100644
--- a/include/netlink.h
+++ b/include/netlink.h
@@ -10,6 +10,8 @@ int nl_init_event_handler(void);
 
 int nl_init_dump_handler(void);
 
+int nl_init_request_handler(void);
+
 int nl_init_overrun_handler(void);
 
 int nl_overrun_request_resync(void);
@@ -20,6 +22,8 @@ int nl_dump_conntrack_table(void);
 
 int nl_exist_conntrack(struct nf_conntrack *ct);
 
+int nl_get_conntrack(struct nf_conntrack *ct);
+
 int nl_create_conntrack(struct nf_conntrack *ct);
 
 int nl_update_conntrack(struct nf_conntrack *ct);