netutils: Add a helper function to convert a string to a 6loWPAN node address

include/netutils/netlib.h

@@ -118,6 +118,7 @@ int netlib_getmacaddr(FAR const char *ifname, FAR uint8_t *macaddr);
 /* Get IEEE802.15.4 MAC driver node address */
 
 int netlib_setnodeaddr(FAR const char *ifname, FAR const uint8_t *nodeaddr);
+bool netlib_nodeaddrconv(FAR const char *hwstr, FAR uint8_t *hw);
 #endif
 
 /* IP address support */

netutils/netlib/Makefile

@@ -87,7 +87,7 @@ CSRCS += netlib_setmacaddr.c netlib_getmacaddr.c
 endif
 
 ifeq ($(CONFIG_NET_6LOWPAN),y)
-CSRCS += netlib_setnodeaddr.c
+CSRCS += netlib_setnodeaddr.c netlib_nodeaddrconv.c 
 endif
 
 # IGMP support

netutils/netlib/netlib_nodeaddrconv.c

@@ -0,0 +1,109 @@
+/****************************************************************************
+ * netutils/netlib/netlib_nodeaddrconv.c
+ *
+ *   Copyright (C) 2017 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 <stdint.h>
+#include <stdbool.h>
+#include <string.h>
+
+#include <nuttx/net/sixlowpan.h>
+
+#include "netutils/netlib.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: netlib_nodeaddrconv
+ ****************************************************************************/
+
+bool netlib_nodeaddrconv(FAR const char *hwstr, FAR uint8_t *hw)
+{
+  unsigned char tmp;
+  unsigned char i;
+  unsigned char j;
+  char ch;
+
+  /* Form xx:xx or xx:xx:xx:xx:xx:xx:xx:xx for extended Rime address */
+
+  if (strlen(hwstr) != 3 * NET_6LOWPAN_RIMEADDR_SIZE - 1)
+    {
+      return false;
+    }
+
+  tmp = 0;
+
+  for (i = 0; i < NET_6LOWPAN_RIMEADDR_SIZE; ++i)
+    {
+      j = 0;
+      do
+        {
+          ch = *hwstr++;
+          if (++j > 3)
+           {
+             return false;
+           }
+
+          if (ch == ':' || ch == '\0')
+            {
+              *hw++ = tmp;
+              tmp = 0;
+            }
+          else if (ch >= '0' && ch <= '9')
+            {
+              tmp = (tmp << 4) + (ch - '0');
+            }
+          else if (ch >= 'a' && ch <= 'f')
+            {
+              tmp = (tmp << 4) + (ch - 'a' + 10);
+            }
+          else if (ch >= 'A' && ch <= 'F')
+            {
+              tmp = (tmp << 4) + (ch - 'A' + 10);
+            }
+          else
+            {
+              return false;
+            }
+        }
+      while (ch != ':' && ch != 0);
+    }
+
+  return true;
+}

netutils/netlib/netlib_setnodeaddr.c

@@ -49,6 +49,8 @@
 #include <netinet/in.h>
 #include <net/if.h>
 
+#include <nuttx/net/sixlowpan.h>
+
 #include "netutils/netlib.h"
 
 #if defined(CONFIG_NET_6LOWPAN) && CONFIG_NSOCKET_DESCRIPTORS > 0
@@ -65,7 +67,7 @@
  *
  * Parameters:
  *   ifname   The name of the interface to use
- *   nodeaddr Node address to set, size must be CONFIG_NET_6LOWPAN_RIMEADDR_SIZE
+ *   nodeaddr Node address to set, size must be NET_6LOWPAN_RIMEADDR_SIZE
  *
  * Return:
  *   0 on success; -1 on failure
@@ -92,7 +94,7 @@ int netlib_setnodeaddr(FAR const char *ifname, FAR const uint8_t *nodeaddr)
           /* Put the new MAC address into the request */
 
           req.ifr_hwaddr.sa_family = AF_INET6;
-          memcpy(&req.ifr_hwaddr.sa_data, nodeaddr, CONFIG_NET_6LOWPAN_RIMEADDR_SIZE);
+          memcpy(&req.ifr_hwaddr.sa_data, nodeaddr, NET_6LOWPAN_RIMEADDR_SIZE);
 
           /* Perform the ioctl to set the MAC address */