1 files changed, 52 insertions, 0 deletions
diff --git a/ldpd/keepalive.c b/ldpd/keepalive.c
new file mode 100644
index 0000000..7a71989
--- /dev/null
+++ b/ldpd/keepalive.c
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: ISC
+/*	$OpenBSD$ */
+
+/*
+ * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
+ */
+
+#include <zebra.h>
+
+#include "ldpd.h"
+#include "ldpe.h"
+#include "log.h"
+#include "ldp_debug.h"
+
+void
+send_keepalive(struct nbr *nbr)
+{
+	struct ibuf	*buf;
+	uint16_t	 size;
+
+	size = LDP_HDR_SIZE + LDP_MSG_SIZE;
+	if ((buf = ibuf_open(size)) == NULL)
+		fatal(__func__);
+
+	gen_ldp_hdr(buf, size);
+	size -= LDP_HDR_SIZE;
+	gen_msg_hdr(buf, MSG_TYPE_KEEPALIVE, size);
+
+	debug_kalive_send("keepalive: lsr-id %pI4", &nbr->id);
+
+	evbuf_enqueue(&nbr->tcp->wbuf, buf);
+	nbr->stats.kalive_sent++;
+}
+
+int
+recv_keepalive(struct nbr *nbr, char *buf, uint16_t len)
+{
+	struct ldp_msg msg;
+
+	memcpy(&msg, buf, sizeof(msg));
+	if (len != LDP_MSG_SIZE) {
+		session_shutdown(nbr, S_BAD_MSG_LEN, msg.id, msg.type);
+		return (-1);
+	}
+
+	debug_kalive_recv("keepalive: lsr-id %pI4", &nbr->id);
+
+	if (nbr->state != NBR_STA_OPER)
+		nbr_fsm(nbr, NBR_EVT_KEEPALIVE_RCVD);
+
+	return (0);
+}