netutils/netlib: Add one wireless IOCTL wrapper. For now, this is just a test to be sure that the wireless IOCTL definitions are in place.

include/netutils/netlib.h

@@ -3,7 +3,7 @@
  * Various non-standard APIs to support netutils.  All non-standard and
  * intended only for internal use.
  *
- *   Copyright (C) 2007, 2009, 2011m 2015 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007, 2009, 2011, 2015, 2017 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Some of these APIs derive from uIP.  uIP also has a BSD style license:
@@ -135,6 +135,10 @@ uint8_t netlib_ipv6netmask2prefix(FAR const uint16_t *mask);
 void netlib_prefix2ipv6netmask(uint8_t preflen, FAR struct in6_addr *netmask);
 #endif
 
+#ifdef CONFIG_NETDEV_WIRELESS_IOCTL
+int netlib_setessid(FAR const char *ifname, FAR const char *essid);
+#endif
+
 #ifdef CONFIG_NET_ARP
 /* ARP Table Support */
 

netutils/netlib/Makefile

@@ -74,6 +74,12 @@ CSRCS += netlib_server.c netlib_listenon.c
 endif
 endif
 
+# These require wireless IOCTL support */
+
+ifeq ($(CONFIG_NETDEV_WIRELESS_IOCTL),y)
+CSRCS += netlib_setessid.c
+endif
+
 # No MAC address support for SLIP (Ethernet only)
 
 ifeq ($(CONFIG_NET_ETHERNET),y)

netutils/netlib/netlib_setessid.c

@@ -0,0 +1,128 @@
+/****************************************************************************
+ * netutils/netlib/netlib_setessid.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 <nuttx/config.h>
+#if defined(CONFIG_NET) && CONFIG_NSOCKET_DESCRIPTORS > 0
+
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include <netinet/in.h>
+#include <net/if.h>
+
+#include <nuttx/wireless/wireless.h>
+
+#include "netutils/netlib.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+/* The address family that we used to create the socket and in the IOCTL
+ * data really does not matter.  It should, however, be valid in the current
+ * configuration.
+ */
+
+#if defined(CONFIG_NET_IPv4)
+#  define PF_INETX PF_INET
+#  define AF_INETX AF_INET
+#elif defined(CONFIG_NET_IPv6)
+#  define PF_INETX PF_INET6
+#  define AF_INETX AF_INET6
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: netlib_setessid
+ *
+ * Description:
+ *   Set the wireless access point ESSID
+ *
+ * Parameters:
+ *   ifname   The name of the interface to use
+ *   essid  MAC address to set, size must be IFHWADDRLEN
+ *
+ * Return:
+ *   0 on success; -1 on failure
+ *
+ ****************************************************************************/
+
+int netlib_setessid(FAR const char *ifname, FAR const char *essid)
+{
+  int ret = ERROR;
+
+  if (ifname != NULL && essid != NULL)
+    {
+      /* Get a socket (only so that we get access to the INET subsystem) */
+
+      int sockfd = socket(PF_INETX, NETLIB_SOCK_IOCTL, 0);
+      if (sockfd >= 0)
+        {
+          struct iwreq req;
+
+          /* Put the driver name into the request */
+
+          strncpy(req.ifrn_name, ifname, IFNAMSIZ);
+
+          /* Put the new ESSID into the request */
+
+          req.u.essid.pointer = (FAR void *)essid;
+          req.u.essid.length  = strlen(essid) + 1;
+          req.u.essid.flags   = 1;
+
+          /* Perform the ioctl to set the MAC address */
+
+          ret = ioctl(sockfd, SIOCSIWESSID, (unsigned long)&req);
+          close(sockfd);
+        }
+    }
+
+  return ret;
+}
+
+#endif /* CONFIG_NET && CONFIG_NSOCKET_DESCRIPTORS */