Partial implementation of a simple network routing table.

6 files changed, 646 insertions, 0 deletions

diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog
index ca448cd4a..d130c9cf0 100644
--- a/nuttx/ChangeLog
+++ b/nuttx/ChangeLog
@@ -5688,4 +5688,7 @@
 	  now functional.  From Max Holtzberg (2013-9-30).
 	* tools/define.sh:  'cut' long because as it once did.  Script
 	  adapted to observed behavior (2013-9-30).
+	* include/nuttx/net/route.h and net/net_*route.c:  Partial
+	  implementation of a routing table. Not yet hooked into the
+	  build system (2013-10-1)
 
diff --git a/nuttx/include/nuttx/net/route.h b/nuttx/include/nuttx/net/route.h
new file mode 100644
index 000000000..9fa761726
--- /dev/null
+++ b/nuttx/include/nuttx/net/route.h
@@ -0,0 +1,162 @@
+/****************************************************************************
+ * include/nuttx/net/route.h
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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 __INCLUDE_NUTTX_NET_ROUTE_H
+#define __INCLUDE_NUTTX_NET_ROUTE_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/net/uip/uip.h>
+
+#ifdef CONFIG_NET_ROUTE
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+/* Configuration ************************************************************/
+
+#ifndef CONFIG_NET_MAXROUTES
+#  define CONFIG_NET_MAXROUTES 4
+#endif
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+/* This structure describes one entry in the routing table */
+
+struct net_route_s
+{
+  bool         inuse;    /* TRUE: This entry contains a valid route */
+  uint8_t      minor;    /* Ethernet device minor */
+  uip_ipaddr_t target;   /* The destination network */
+  uip_ipaddr_t netmask;  /* The network address mask */
+  uip_ipaddr_t gateway;  /* Route packets via a gateway */
+};
+
+/* Type of the call out function pointer provided to net_foreachroute() */
+
+typedef int (*route_handler_t)(FAR struct net_route_s *route, FAR void *arg);
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/* This is the routing table */
+
+EXTERN struct net_route_s g_routes[CONFIG_NET_MAXROUTES];
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: net_addroute
+ *
+ * Description:
+ *   Add a new route to the routing table
+ *
+ * Parameters:
+ *
+ * Returned Value:
+ *   OK on success; Negated errno on failure.
+ *
+ ****************************************************************************/
+
+int net_addroute(uip_ipaddr_t target, uip_ipaddr_t netmask,
+                 uip_ipaddr_t gateway, int devno);
+
+/****************************************************************************
+ * Function: net_delroute
+ *
+ * Description:
+ *   Remove an existing route from the routing table
+ *
+ * Parameters:
+ *
+ * Returned Value:
+ *   OK on success; Negated errno on failure.
+ *
+ ****************************************************************************/
+
+int net_delroute(uip_ipaddr_t target, uip_ipaddr_t netmask);
+
+/****************************************************************************
+ * Function: net_findroute
+ *
+ * Description:
+ *   Given an IP address, return a copy of the routing table contents
+ *
+ * Parameters:
+ *
+ * Returned Value:
+ *   OK on success; Negated errno on failure.
+ *
+ ****************************************************************************/
+
+int net_findroute(uip_ipaddr_t target, FAR struct net_route_s *route);
+
+/****************************************************************************
+ * Function: net_foreachroute
+ *
+ * Description:
+ *   Traverse the route table
+ *
+ * Parameters:
+ *
+ * Returned Value:
+ *   OK on success; Negated errno on failure.
+ *
+ ****************************************************************************/
+
+int net_foreachroute(route_handler_t handler, FAR void *arg);
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CONFIG_NET_ROUTE */
+#endif /* __INCLUDE_NUTTX_NET_ROUTE_H */
diff --git a/nuttx/net/net_addroute.c b/nuttx/net/net_addroute.c
new file mode 100644
index 000000000..fd4e7de9a
--- /dev/null
+++ b/nuttx/net/net_addroute.c
@@ -0,0 +1,120 @@
+/****************************************************************************
+ * net/net_addroute.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <errno.h>
+
+#include <nuttx/net/route.h>
+
+#include "net_internal.h"
+
+#if defined(CONFIG_NET) && defined(CONFIG_NET_ROUTE)
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: net_available
+ *
+ * Description:
+ *   Return 1 if the route is available
+ *
+ * Parameters:
+ *   route - The next route to examine
+ *   arg   - The new route entry (cast to void*)
+ *
+ * Returned Value:
+ *   OK on success; Negated errno on failure.
+ *
+ ****************************************************************************/
+
+static int net_available(FAR struct net_route_s *route, FAR void *arg)
+{
+  if (!route->inuse)
+    {
+      memcpy(route, arg, sizeof(struct net_route_s));
+      return 1;
+    }
+
+  return 0;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: net_addroute
+ *
+ * Description:
+ *   Add a new route to the routing table
+ *
+ * Parameters:
+ *
+ * Returned Value:
+ *   OK on success; Negated errno on failure.
+ *
+ ****************************************************************************/
+
+int net_addroute(uip_ipaddr_t target, uip_ipaddr_t netmask,
+                 uip_ipaddr_t gateway, int devno)
+{
+  struct net_route_s route;
+
+  /* Format the new route table entry */
+
+  route.inuse = true;
+  route.minor = devno;
+  uip_ipaddr_copy(route.target, target);
+  uip_ipaddr_copy(route.netmask, netmask);
+  uip_ipaddr_copy(route.gateway, gateway);
+
+  /* Then add the new entry to the table */
+
+  return net_foreachroute(net_available, &route) ? OK : -EAGAIN;
+}
+
+#endif /* CONFIG_NET && CONFIG_NET_SOCKOPTS && !CONFIG_DISABLE_CLOCK */
diff --git a/nuttx/net/net_delroute.c b/nuttx/net/net_delroute.c
new file mode 100644
index 000000000..08d9ad154
--- /dev/null
+++ b/nuttx/net/net_delroute.c
@@ -0,0 +1,132 @@
+/****************************************************************************
+ * net/net_delroute.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <errno.h>
+
+#include <nuttx/net/route.h>
+
+#include "net_internal.h"
+
+#if defined(CONFIG_NET) && defined(CONFIG_NET_ROUTE)
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+struct route_match_s
+{
+  uip_ipaddr_t target;           /* The target IP address to match */
+  FAR struct net_route_s *route; /* The location to return the route */
+};
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: net_match
+ *
+ * Description:
+ *   Return 1 if the route is available
+ *
+ * Parameters:
+ *   route - The next route to examine
+ *   arg   - The match values (cast to void*)
+ *
+ * Returned Value:
+ *   0 if the entry is not a match; 1 if the entry matched and was cleared.
+ *
+ ****************************************************************************/
+
+static int net_match(FAR struct net_route_s *route, FAR void *arg)
+{
+  FAR struct route_match_s *match = ( FAR struct route_match_s *)arg;
+
+  /* To match, the entry has to be in use, the masked target addresses must
+   * be the same.  In the event of multiple matches, only the first is
+   * returned.
+   */
+
+  if (route->inuse &&
+      uip_ipaddr_maskcmp(route->target, match->target, route>netmask))
+    {
+      /* They match.. clear the route table entry */
+
+      memcpy(match->route, route, sizeof(struct net_route_s));
+      return 1;
+    }
+
+  return 0;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: net_findroute
+ *
+ * Description:
+ *   Given an IP address, return a copy of the routing table contents
+ *
+ * Parameters:
+ *
+ * Returned Value:
+ *   OK on success; Negated errno on failure.
+ *
+ ****************************************************************************/
+
+int net_findroute(uip_ipaddr_t target, FAR struct net_route_s *route);
+{
+  struct route_match_s match;
+
+  /* Set up the comparison structure */
+
+  uip_ipaddr_copy(match.target, target);
+  uip_ipaddr_copy(match.netmask, netmask);
+
+  /* Then remove the entry from the routing table */
+
+  return net_foreachroute(net_match, &match) ? OK : -ENOENT;
+}
+
+#endif /* CONFIG_NET && CONFIG_NET_ROUTE */
diff --git a/nuttx/net/net_findroute.c b/nuttx/net/net_findroute.c
new file mode 100644
index 000000000..252f9a098
--- /dev/null
+++ b/nuttx/net/net_findroute.c
@@ -0,0 +1,132 @@
+/****************************************************************************
+ * net/net_delroute.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <errno.h>
+
+#include <nuttx/net/route.h>
+
+#include "net_internal.h"
+
+#if defined(CONFIG_NET) && defined(CONFIG_NET_ROUTE)
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+struct route_match_s
+{
+  uip_ipaddr_t target;   /* The target IP address to match */
+  uip_ipaddr_t netmask;  /* The network mask to match */
+};
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: net_match
+ *
+ * Description:
+ *   Return 1 if the route is available
+ *
+ * Parameters:
+ *   route - The next route to examine
+ *   arg   - The match values (cast to void*)
+ *
+ * Returned Value:
+ *   0 if the entry is not a match; 1 if the entry matched and was cleared.
+ *
+ ****************************************************************************/
+
+static int net_match(FAR struct net_route_s *route, FAR void *arg)
+{
+  FAR struct route_match_s *match = ( FAR struct route_match_s *)arg;
+
+  /* To match, the entry has to be in use, the masked target address must
+   * be the same, and the masks must be the same.
+   */
+
+  if (route->inuse &&
+      uip_ipaddr_maskcmp(route->target, match->target, match->netmask) &&
+      uip_ipaddr_cmp(route->target, match->netmask))
+    {
+      /* They match.. clear the route table entry */
+
+      memset(route, 0, sizeof(struct net_route_s));
+      return 1;
+    }
+
+  return 0;
+}
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: net_delroute
+ *
+ * Description:
+ *   Remove an existing route from the routing table
+ *
+ * Parameters:
+ *
+ * Returned Value:
+ *   OK on success; Negated errno on failure.
+ *
+ ****************************************************************************/
+
+int net_delroute(uip_ipaddr_t target, uip_ipaddr_t netmask);
+{
+  struct route_match_s match;
+
+  /* Set up the comparison structure */
+
+  uip_ipaddr_copy(match.target, target);
+  uip_ipaddr_copy(match.netmask, netmask);
+
+  /* Then remove the entry from the routing table */
+
+  return net_foreachroute(net_match, &match) ? OK : -ENOENT;
+}
+
+#endif /* CONFIG_NET && CONFIG_NET_SOCKOPTS && !CONFIG_DISABLE_CLOCK */
diff --git a/nuttx/net/net_foreachroute.c b/nuttx/net/net_foreachroute.c
new file mode 100644
index 000000000..4c82a688b
--- /dev/null
+++ b/nuttx/net/net_foreachroute.c
@@ -0,0 +1,97 @@
+/****************************************************************************
+ * net/net_foreachroute.c
+ *
+ *   Copyright (C) 2013 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
+ * COPYRIGHT OWNER 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <errno.h>
+
+#include <nuttx/net/route.h>
+
+#include "net_internal.h"
+
+#if defined(CONFIG_NET) && defined(CONFIG_NET_ROUTE)
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/* This is the routing table */
+
+struct net_route_s g_routes[CONFIG_NET_MAXROUTES];
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function: net_foreachroute
+ *
+ * Description:
+ *   Traverse the route table
+ *
+ * Parameters:
+ *
+ * Returned Value:
+ *   0 if in use; 1 if avaialble and the new entry was added
+ *
+ ****************************************************************************/
+
+int net_foreachroute(route_handler_t handler, FAR void *arg)
+{
+  uip_lock_t save;
+  int ret = 0;
+  int i;
+
+  /* Prevent concurrent access to the routing table */
+
+  save = uip_lock();
+
+  for (i = 0; i < CONFIG_NET_MAXROUTES && ret == 0; i++)
+    {
+      ret = handler(&g_route[i], arg);
+    }
+
+  /* Unlock uIP */
+
+  uip_unlock(save);
+  return ret;
+}
+
+#endif /* CONFIG_NET && CONFIG_NET_SOCKOPTS && !CONFIG_DISABLE_CLOCK */