1 files changed, 206 insertions, 0 deletions
diff --git a/nuttx/net/uip/uip-listen.c b/nuttx/net/uip/uip-listen.c
new file mode 100644
index 000000000..edbb9d469
--- /dev/null
+++ b/nuttx/net/uip/uip-listen.c
@@ -0,0 +1,206 @@
+/****************************************************************************
+ * net/uip/uip-listen.c
+ *
+ *   Copyright (C) 2007 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * A direct leverage of logic from uIP which also has b BSD style license
+ *
+ *   Author: Adam Dunkels <adam@dunkels.com>
+ *   Copyright (c) 2001-2003, Adam Dunkels.
+ *   All rights reserved.
+ *
+ * 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.
+ * 3. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#ifdef CONFIG_NET
+
+#include <sys/types.h>
+#include <net/uip/uipopt.h>
+
+#include "uip-internal.h"
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/* The uip_listenports list all currently listening ports. */
+
+static uint16 uip_listenports[UIP_LISTENPORTS];
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: uip_listeninit
+ *
+ * Description:
+ *   Setup the listening data structures
+ *
+ * Assumptions:
+ *   Called early in the inialization phase while the system is still
+ *   single-threaded.
+ *
+ ****************************************************************************/
+
+void uip_listeninit(void)
+{
+  int ndx;
+  for (ndx = 0; ndx < UIP_LISTENPORTS; ndx++)
+    {
+      uip_listenports[ndx] = 0;
+    }
+}
+
+/****************************************************************************
+ * Function: uip_unlisten
+ *
+ * Description:
+ *   Stop listening on a port
+ *
+ * Assumptions:
+ *   Called from normal user code.
+ *
+ ****************************************************************************/
+
+int uip_unlisten(uint16 port)
+{
+  irqstate_t flags;
+  int ndx;
+  int ret = -EINVAL;
+
+  flags = irqsave();
+  for (ndx = 0; ndx < UIP_LISTENPORTS; ndx++)
+    {
+      if (uip_listenports[ndx] == port)
+        {
+          uip_listenports[ndx] = 0;
+          ret = OK;
+          break;
+        }
+    }
+  irqrestore(flags);
+  return ret;
+}
+
+/****************************************************************************
+ * Function: uip_listen
+ *
+ * Description:
+ *   Start listening on a port
+ *
+ * Assumptions:
+ *   Called from normal user code.
+ *
+ ****************************************************************************/
+
+int uip_listen(uint16 port)
+{
+  irqstate_t flags;
+  int ndx;
+  int ret = -ENOBUFS;
+
+  flags = irqsave();
+  for (ndx = 0; ndx < UIP_LISTENPORTS; ndx++)
+    {
+      if (uip_listenports[ndx] == 0)
+        {
+          uip_listenports[ndx] = port;
+          ret = OK;
+          break;
+        }
+    }
+  irqrestore(flags);
+  return ret;
+}
+
+/****************************************************************************
+ * Function: uip_islistener
+ *
+ * Description:
+ *   Return TRUE is there is a listener for the specified port
+ *
+ * Assumptions:
+ *   Called at interrupt level
+ *
+ ****************************************************************************/
+
+boolean uip_islistener(uint16 portno)
+{
+  int ndx;
+  for (ndx = 0; ndx < UIP_LISTENPORTS; ndx++)
+    {
+      if (uip_listenports[ndx] == portno)
+        {
+          return TRUE;
+        }
+    }
+  return FALSE;
+}
+
+/****************************************************************************
+ * Function: uip_accept
+ *
+ * Description:
+ *   Accept the new connection for the specified listening port.
+ *
+ * Assumptions:
+ *   Called at interrupt level
+ *
+ ****************************************************************************/
+
+int uip_accept(struct uip_conn *conn, uint16 portno)
+{
+  struct uip_conn *listener;
+  int ret = ERROR;
+  
+  /* The interrupt logic has already allocated and initialized a TCP
+   * connection -- now check if is an application in place to accept the
+   * connection.
+   */
+
+  listener = uip_tcplistener(portno);
+  if (listener && listener->accept)
+    {
+      /* Yes.. accept the connection */
+
+      ret = listener->accept(listener->accept_private, conn);
+    }
+   return ret;
+}
+
+#endif /* CONFIG_NET */