zebra: Add initial zebra tracepoint support

Add initial zebra tracepoint support infrastructure
as well as add a frr_zebra:netlink_interface
callback.

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

1 files changed, 57 insertions, 0 deletions

diff --git a/zebra/zebra_trace.h b/zebra/zebra_trace.h
new file mode 100644
index 0000000000..14be95dca4
--- /dev/null
+++ b/zebra/zebra_trace.h
@@ -0,0 +1,57 @@
+/* Tracing for zebra
+ *
+ * Copyright (C) 2020  NVIDIA Corporation
+ * Donald Sharp
+ *
+ * This program 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 of the License, or (at your option)
+ * any later version.
+ *
+ * This program 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 this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#if !defined(__ZEBRA_TRACE_H__) || defined(TRACEPOINT_HEADER_MULTI_READ)
+#define __ZEBRA_TRACE_H__
+
+#include "lib/trace.h"
+
+#ifdef HAVE_LTTNG
+
+#undef TRACEPOINT_PROVIDER
+#define TRACEPOINT_PROVIDER frr_zebra
+
+#undef TRACEPOINT_INCLUDE
+#define TRACEPOINT_INCLUDE "zebra/zebra_trace.h"
+
+#include <lttng/tracepoint.h>
+
+#include <lib/ns.h>
+#include <lib/table.h>
+
+TRACEPOINT_EVENT(
+	frr_zebra,
+	netlink_interface,
+	TP_ARGS(
+		struct nlmsghdr *, h,
+		ns_id_t, ns_id,
+		int, startup),
+	TP_FIELDS(
+		ctf_integer_hex(intptr_t, h, h)
+		ctf_integer(uint32_t, ns_id, ns_id)
+		ctf_integer(uint32_t, startup, startup)
+		)
+	)
+
+#include <lttng/tracepoint-event.h>
+
+#endif /* HAVE_LTTNG */
+
+#endif /* __ZEBRA_TRACE_H__ */