Add mDNS support for name service dispatcher

rtemsbsd/include/rtems/mdns.h

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _RTEMS_MDNS_H_
+#define _RTEMS_MDNS_H_
+
+#include <mDNSEmbeddedAPI.h>
+
+#include <rtems.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+/**
+ * @brief Initializes an mDNS resolver instance.
+ *
+ * Calling this function multiple times leads to unpredictable results.
+ *
+ * @param[in] daemon_priority The task priority of the mDNS daemon.
+ * @param[in] rrcachestorage The resource record cache storage.  Use
+ *   mDNS_Init_NoCache in case no cache is desired.
+ * @param[in] rrcachesize The resource record cache entity count of the
+ *   provided storage.  Use mDNS_Init_ZeroCacheSize in case no cache is desired.
+ *
+ * @retval RTEMS_SUCCESSFUL Successful operation.
+ * @retval RTEMS_UNSATISFIED Initialization is incomplete.
+ */
+rtems_status_code rtems_mdns_initialize(rtems_task_priority daemon_priority,
+    CacheEntity *rrcachestorage, mDNSu32 rrcachesize);
+
+/**
+ * @brief Returns the mDNS resolver instance.
+ *
+ * Using of this instance is only allowed after a successful call to
+ * rtems_mdns_initialize().
+ *
+ * @retval instance The mDNS resolver instance.
+ */
+mDNS *rtems_mdns_get_instance(void);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* _RTEMS_MDNS_H_ */