--- /dev/null
+/*
+ * "Copyright (c) 2008 The Regents of the University of California.
+ * All rights reserved."
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose, without fee, and without written agreement is
+ * hereby granted, provided that the above copyright notice, the following
+ * two paragraphs and the author appear in all copies of this software.
+ *
+ * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
+ * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
+ * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS."
+ *
+ */
+/*
+ * Implementation of user-mode driver and IP gateway using a node
+ * running IPBaseStation as 802.15.4 hardware. Uses kernel tun
+ * interface to route addresses.
+ *
+ */
+#include <stdio.h>
+#include <stdint.h>
+#include <unistd.h>
+
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+uint16_t shortAddr;
+int tun_fd;
+char *tun_dev = "/dev/net/tun";
+
+void usage(char **args) {
+ fprintf(stderr, "\n\t%s <my-short-addr>\n\n", args[0]);
+}
+
+int create_tunnel() {
+ struct ifreq ifr;
+ if ((tun_fd = open(tun_dev, O_RDWR)) < 0) {
+ fprintf(stderr, "Failed to open '%s' : ", tun_dev);
+ perror("");
+ return 1;
+ }
+ ifr.irf_flags = IFF_TAP | IFF_NO_PI;
+ str
+
+ return 0;
+}
+
+int main(int argc, char **argv) {
+ if (argc != 2) {
+ usage(argv);
+ return 1;
+ }
+ shortAddr = atoi(argv[1]);
+
+ if (create_tunnel())
+ return 1;
+
+ sleep(20);
+
+ return 0;
+}