mgmtd: Bringup MGMTD daemon and datastore module support

Features added in this commit:
1. Bringup/shutdown new management daemon 'mgmtd' along with FRR.
2. Support for Startup, Candidate and Running DBs.
3. Lock/Unlock DS feature using pthread lock.
4. Load config from a JSON file onto candidate DS.
5. Save config to a JSON file from running/candidate DS.
6. Dump candidate or running DS contents on the terminal or a file in
   JSON/XML format.
7. Maintaining commit history (Full rollback support to be added in
   future commits).
8. Addition of debug commands.

Co-authored-by: Yash Ranjan <ranjany@vmware.com>
Co-authored-by: Abhinay Ramesh <rabhinay@vmware.com>
Co-authored-by: Ujwal P <ujwalp@vmware.com>
Signed-off-by: Pushpasis Sarkar <pushpasis@gmail.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/mgmtd/mgmt.c b/mgmtd/mgmt.c
new file mode 100644
index 0000000000..1901bde620
--- /dev/null
+++ b/mgmtd/mgmt.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * FRR Management Daemon (MGMTD) program
+ *
+ * Copyright (C) 2021  Vmware, Inc.
+ *		       Pushpasis Sarkar
+ */
+
+#include <zebra.h>
+#include "mgmtd/mgmt.h"
+#include "mgmtd/mgmt_ds.h"
+#include "mgmtd/mgmt_memory.h"
+
+bool mgmt_debug_be;
+bool mgmt_debug_fe;
+bool mgmt_debug_ds;
+bool mgmt_debug_txn;
+
+/* MGMTD process wide configuration.  */
+static struct mgmt_master mgmt_master;
+
+/* MGMTD process wide configuration pointer to export.  */
+struct mgmt_master *mm;
+
+void mgmt_master_init(struct thread_master *master, const int buffer_size)
+{
+	memset(&mgmt_master, 0, sizeof(struct mgmt_master));
+
+	mm = &mgmt_master;
+	mm->master = master;
+	mm->terminating = false;
+	mm->socket_buffer = buffer_size;
+	mm->perf_stats_en = true;
+}
+
+void mgmt_init(void)
+{
+
+	/* Initialize datastores */
+	mgmt_ds_init(mm);
+
+	/* MGMTD VTY commands installation.  */
+	mgmt_vty_init();
+}
+
+void mgmt_terminate(void)
+{
+	mgmt_ds_destroy();
+}