xfrmi: introduce XFRM interfaces support

XFRM interfaces were introduced in kernel 4.19.
This commit adds link support for these interfaces.

Signed-off-by: Eyal Birger <eyal.birger@gmail.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/tests/test-create-xfrmi.c b/tests/test-create-xfrmi.c
new file mode 100644
index 00000000..3a01a4ff
--- /dev/null
+++ b/tests/test-create-xfrmi.c
@@ -0,0 +1,49 @@
+#include <netlink/route/link/xfrmi.h>
+#include <netlink-private/netlink.h>
+
+int main(int argc, char *argv[])
+{
+	struct nl_cache *link_cache;
+	struct rtnl_link *link;
+	struct nl_sock *sk;
+	int err, if_index;
+
+	sk = nl_socket_alloc();
+	if ((err = nl_connect(sk, NETLINK_ROUTE)) < 0) {
+		nl_perror(err, "Unable to connect socket");
+		return err;
+	}
+
+	err = rtnl_link_alloc_cache(sk, AF_UNSPEC, &link_cache);
+	if (err < 0) {
+		nl_perror(err, "Unable to allocate cache");
+		return err;
+	}
+
+	if_index = rtnl_link_name2i(link_cache, "eth0");
+	if (!if_index) {
+		fprintf(stderr, "Unable to lookup eth0");
+		return -1;
+	}
+
+	link = rtnl_link_xfrmi_alloc();
+	if (!link) {
+		nl_perror(err, "Unable to allocate link");
+		return -1;
+
+	}
+
+	rtnl_link_set_name(link, "ipsec0");
+	rtnl_link_xfrmi_set_link(link, if_index);
+	rtnl_link_xfrmi_set_if_id(link, 16);
+
+	err = rtnl_link_add(sk, link, NLM_F_CREATE);
+	if (err < 0) {
+		nl_perror(err, "Unable to add link");
+		return err;
+	}
+
+	rtnl_link_put(link);
+	nl_close(sk);
+	return 0;
+}