1 files changed, 127 insertions, 0 deletions
diff --git a/bfdd/event.c b/bfdd/event.c
new file mode 100644
index 0000000..654928b
--- /dev/null
+++ b/bfdd/event.c
@@ -0,0 +1,127 @@
+/*********************************************************************
+ * Copyright 2017-2018 Network Device Education Foundation, Inc. ("NetDEF")
+ *
+ * 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
+ *
+ * event.c: implements the BFD loop event handlers.
+ *
+ * Authors
+ * -------
+ * Rafael Zalamena <rzalamena@opensourcerouting.org>
+ */
+
+#include <zebra.h>
+
+#include "bfd.h"
+
+void tv_normalize(struct timeval *tv);
+
+void tv_normalize(struct timeval *tv)
+{
+	/* Remove seconds part from microseconds. */
+	tv->tv_sec = tv->tv_usec / 1000000;
+	tv->tv_usec = tv->tv_usec % 1000000;
+}
+
+void bfd_recvtimer_update(struct bfd_session *bs)
+{
+	struct timeval tv = {.tv_sec = 0, .tv_usec = bs->detect_TO};
+
+	/* Remove previous schedule if any. */
+	bfd_recvtimer_delete(bs);
+
+	/* Don't add event if peer is deactivated. */
+	if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN) ||
+	    bs->sock == -1)
+		return;
+
+	tv_normalize(&tv);
+
+	thread_add_timer_tv(master, bfd_recvtimer_cb, bs, &tv,
+			    &bs->recvtimer_ev);
+}
+
+void bfd_echo_recvtimer_update(struct bfd_session *bs)
+{
+	struct timeval tv = {.tv_sec = 0, .tv_usec = bs->echo_detect_TO};
+
+	/* Remove previous schedule if any. */
+	bfd_echo_recvtimer_delete(bs);
+
+	/* Don't add event if peer is deactivated. */
+	if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN) ||
+	    bs->sock == -1)
+		return;
+
+	tv_normalize(&tv);
+
+	thread_add_timer_tv(master, bfd_echo_recvtimer_cb, bs, &tv,
+			    &bs->echo_recvtimer_ev);
+}
+
+void bfd_xmttimer_update(struct bfd_session *bs, uint64_t jitter)
+{
+	struct timeval tv = {.tv_sec = 0, .tv_usec = jitter};
+
+	/* Remove previous schedule if any. */
+	bfd_xmttimer_delete(bs);
+
+	/* Don't add event if peer is deactivated. */
+	if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN) ||
+	    bs->sock == -1)
+		return;
+
+	tv_normalize(&tv);
+
+	thread_add_timer_tv(master, bfd_xmt_cb, bs, &tv, &bs->xmttimer_ev);
+}
+
+void bfd_echo_xmttimer_update(struct bfd_session *bs, uint64_t jitter)
+{
+	struct timeval tv = {.tv_sec = 0, .tv_usec = jitter};
+
+	/* Remove previous schedule if any. */
+	bfd_echo_xmttimer_delete(bs);
+
+	/* Don't add event if peer is deactivated. */
+	if (CHECK_FLAG(bs->flags, BFD_SESS_FLAG_SHUTDOWN) ||
+	    bs->sock == -1)
+		return;
+
+	tv_normalize(&tv);
+
+	thread_add_timer_tv(master, bfd_echo_xmt_cb, bs, &tv,
+			    &bs->echo_xmttimer_ev);
+}
+
+void bfd_recvtimer_delete(struct bfd_session *bs)
+{
+	THREAD_OFF(bs->recvtimer_ev);
+}
+
+void bfd_echo_recvtimer_delete(struct bfd_session *bs)
+{
+	THREAD_OFF(bs->echo_recvtimer_ev);
+}
+
+void bfd_xmttimer_delete(struct bfd_session *bs)
+{
+	THREAD_OFF(bs->xmttimer_ev);
+}
+
+void bfd_echo_xmttimer_delete(struct bfd_session *bs)
+{
+	THREAD_OFF(bs->echo_xmttimer_ev);
+}