lib: Add a basic mlag.h file

This is the start of a series of commits that will allow FRR to
be integrated into mlag.

Zebra and Pim will both need mlag state for the router.  As such we will
need to provide a abstract about this state through the zapi.

This is the start of the common header that both Pim and Zebra will
be using.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/lib/mlag.h b/lib/mlag.h
new file mode 100644
index 000000000..05fbd1b8a
--- /dev/null
+++ b/lib/mlag.h
@@ -0,0 +1,31 @@
+/* mlag header.
+ * Copyright (C) 2018 Cumulus Networks, Inc.
+ *                    Donald Sharp
+ *
+ * This file is part of FRR.
+ *
+ * FRR is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * FRR is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with FRR; see the file COPYING.  If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+#ifndef __MLAG_H__
+#define __MLAG_H__
+
+enum mlag_role {
+	MLAG_ROLE_NONE,
+	MLAG_ROLE_PRIMARY,
+	MLAG_ROLE_SECONDARY
+};
+
+#endif