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-rw-r--r--ldpd/keepalive.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/ldpd/keepalive.c b/ldpd/keepalive.c
new file mode 100644
index 0000000..b031271
--- /dev/null
+++ b/ldpd/keepalive.c
@@ -0,0 +1,63 @@
+/* $OpenBSD$ */
+
+/*
+ * Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#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);
+}