src: support for redundant dedicated links

This patch adds support for redundant dedicated links. You can add
a pool of dedicated links that can be used if the current active
fails.

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

1 files changed, 16 insertions, 0 deletions

diff --git a/src/netlink.c b/src/netlink.c
index 92fbf00..2266201 100644
--- a/src/netlink.c
+++ b/src/netlink.c
@@ -114,6 +114,22 @@ struct nfct_handle *nl_init_request_handler(void)
 	return h;
 }
 
+struct nlif_handle *nl_init_interface_handler(void)
+{
+	struct nlif_handle *h;
+	h = nlif_open();
+	if (h == NULL)
+		return NULL;
+
+	if (nlif_query(h) == -1) {
+		free(h);
+		return NULL;
+	}
+	fcntl(nlif_fd(h), F_SETFL, O_NONBLOCK);
+
+	return h;
+}
+
 static int warned = 0;
 
 void nl_resize_socket_buffer(struct nfct_handle *h)