lib: Add fccntl configuration command

This replaces the flow_set_* commands with a single fccntl command
that can configure flows and the FRCT instance.

For more details, see "man 3 fccntl".

1 files changed, 67 insertions, 0 deletions

diff --git a/include/ouroboros/fccntl.h b/include/ouroboros/fccntl.h
new file mode 100644
index 00000000..d938439f
--- /dev/null
+++ b/include/ouroboros/fccntl.h
@@ -0,0 +1,67 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2017
+ *
+ * Flow and FRCT connection control
+ *
+ *    Dimitri Staessens <dimitri.staessens@ugent.be>
+ *    Sander Vrijders   <sander.vrijders@ugent.be>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * version 2.1 as published by the Free Software Foundation.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., http://www.fsf.org/about/contact/.
+ */
+
+#ifndef OUROBOROS_FCCNTL_H
+#define OUROBOROS_FCCNTL_H
+
+#include <ouroboros/cdefs.h>
+
+#include <sys/time.h>
+
+/* Flow flags, same values as fcntl.h */
+#define FLOWFRDONLY   00000000 /* Read-only flow        */
+#define FLOWFWRONLY   00000001 /* Write-only flow       */
+#define FLOWFRDWR     00000002 /* Read-write flow       */
+#define FLOWFACCMODE  00000003 /* Access mask           */
+
+#define FLOWFNONBLOCK 00004000 /* Non-blocking flow     */
+#define FLOWFDEFAULT  00000002 /* Default, blocking, rw */
+
+#define FLOWFINVALID  (FLOWFWRONLY | FLOWFRDWR)
+
+/* FRCT flags */
+#define FRCTFRESCNTRL 00000001 /* Feedback from receiver */
+#define FRCTFRTX      00000002 /* Reliable flow          */
+#define FRCTFERRCHCK  00000004 /* Check for errors       */
+#define FRCTFORDERING 00000010 /* Ordered delivery       */
+#define FRCTFPARTIAL  00000020 /* Allow partial delivery */
+
+/* Operations */
+#define FLOWSRCVTIMEO 00000001 /* Set read timeout       */
+#define FLOWGRCVTIMEO 00000002 /* Get read timeout       */
+#define FLOWSSNDTIMEO 00000003 /* Set send timeout       */
+#define FLOWGSNDTIMEO 00000004 /* Get send timeout       */
+#define FLOWGQOSSPEC  00000005 /* Get qosspec_t          */
+#define FLOWSFLAGS    00000006 /* Set flags for flow     */
+#define FLOWGFLAGS    00000007 /* Get flags for flow     */
+#define FRCTSFLAGS    00000010 /* Set flags for FRCT     */
+#define FRCTGFLAGS    00000011 /* Get flags for FRCT     */
+
+__BEGIN_DECLS
+
+int fccntl(int fd,
+           int cmd,
+           ...);
+
+__END_DECLS
+
+#endif /* OUROBOROS_FCCNTL_H */