isisd: Provide statistics about sent/received PDU count

Signed-off-by: Christian Franke <chris@opensourcerouting.org>

1 files changed, 104 insertions, 0 deletions

diff --git a/isisd/isis_pdu_counter.c b/isisd/isis_pdu_counter.c
new file mode 100644
index 000000000..90bb758c2
--- /dev/null
+++ b/isisd/isis_pdu_counter.c
@@ -0,0 +1,104 @@
+/*
+ * IS-IS Routing protocol - isis_pdu_counter.c
+ * Copyright (C) 2018 Christian Franke, for NetDEF Inc.
+ *
+ * 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
+ */
+
+#include <zebra.h>
+
+#include "vty.h"
+
+#include "isisd/isis_pdu_counter.h"
+#include "isisd/isisd.h"
+#include "isisd/isis_circuit.h"
+#include "isisd/isis_pdu.h"
+
+static int pdu_type_to_counter_index(uint8_t pdu_type)
+{
+	switch (pdu_type) {
+	case L1_LAN_HELLO:
+		return L1_LAN_HELLO_INDEX;
+	case L2_LAN_HELLO:
+		return L2_LAN_HELLO_INDEX;
+	case P2P_HELLO:
+		return P2P_HELLO_INDEX;
+	case L1_LINK_STATE:
+		return L1_LINK_STATE_INDEX;
+	case L2_LINK_STATE:
+		return L2_LINK_STATE_INDEX;
+	case FS_LINK_STATE:
+		return FS_LINK_STATE_INDEX;
+	case L1_COMPLETE_SEQ_NUM:
+		return L1_COMPLETE_SEQ_NUM_INDEX;
+	case L2_COMPLETE_SEQ_NUM:
+		return L2_COMPLETE_SEQ_NUM_INDEX;
+	case L1_PARTIAL_SEQ_NUM:
+		return L1_PARTIAL_SEQ_NUM_INDEX;
+	case L2_PARTIAL_SEQ_NUM:
+		return L2_PARTIAL_SEQ_NUM_INDEX;
+	default:
+		return -1;
+	}
+}
+
+static const char *pdu_counter_index_to_name(enum pdu_counter_index index)
+{
+	switch(index) {
+	case L1_LAN_HELLO_INDEX:
+		return " L1 IIH";
+	case L2_LAN_HELLO_INDEX:
+		return " L2 IIH";
+	case P2P_HELLO_INDEX:
+		return "P2P IIH";
+	case L1_LINK_STATE_INDEX:
+		return " L1 LSP";
+	case L2_LINK_STATE_INDEX:
+		return " L2 LSP";
+	case FS_LINK_STATE_INDEX:
+		return " FS LSP";
+	case L1_COMPLETE_SEQ_NUM_INDEX:
+		return "L1 CSNP";
+	case L2_COMPLETE_SEQ_NUM_INDEX:
+		return "L2 CSNP";
+	case L1_PARTIAL_SEQ_NUM_INDEX:
+		return "L1 PSNP";
+	case L2_PARTIAL_SEQ_NUM_INDEX:
+		return "L2 PSNP";
+	default:
+		return "???????";
+	}
+}
+
+void pdu_counter_count(pdu_counter_t counter, uint8_t pdu_type)
+{
+	int index = pdu_type_to_counter_index(pdu_type);
+
+	if (index < 0)
+		return;
+
+	counter[index]++;
+}
+
+void pdu_counter_print(struct vty *vty, const char *prefix,
+		       pdu_counter_t counter)
+{
+	for (int i = 0; i < PDU_COUNTER_SIZE; i++) {
+		if (!counter[i])
+			continue;
+		vty_out(vty, "%s%s: %" PRIu64 "\n", prefix,
+			pdu_counter_index_to_name(i), counter[i]);
+	}
+}