nuttx-apps/examples/udp/udp_netinit.c

/****************************************************************************
 * apps/examples/udp/udp_netinit.c
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include "config.h"

#include <stdbool.h>
#include <stdio.h>
#include <debug.h>

#include <arpa/inet.h>
#include <netinet/in.h>

#include "netutils/netlib.h"

#include "udp.h"

#ifdef CONFIG_EXAMPLES_UDP_NETINIT

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

#ifdef CONFIG_EXAMPLES_UDP_DEVNAME
#  define DEVNAME CONFIG_EXAMPLES_UDP_DEVNAME
#else
#  define DEVNAME "eth0"
#endif

/****************************************************************************
 * Private Data
 ****************************************************************************/

#if defined(CONFIG_EXAMPLES_UDP_IPv6) && !defined(CONFIG_NET_ICMPv6_AUTOCONF)
/* Our host IPv6 address */

static const uint16_t g_ipv6_hostaddr[8];

/* Default routine IPv6 address */

static const uint16_t g_ipv6_draddr[8];

/* IPv6 netmask */

static const uint16_t g_ipv6_netmask[8];

#endif /* CONFIG_EXAMPLES_UDP_IPv6 && !CONFIG_NET_ICMPv6_AUTOCONF */

static bool g_initialized;

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * udp_netinit
 ****************************************************************************/

int udp_netinit(void)
{
#if defined(CONFIG_EXAMPLES_UDP_IPv6) && !defined(CONFIG_NET_ICMPv6_AUTOCONF)
  /* Our host IPv6 address */

  g_ipv6_hostaddr[0] = HTONS(CONFIG_EXAMPLES_UDP_IPv6ADDR_1);
  g_ipv6_hostaddr[1] = HTONS(CONFIG_EXAMPLES_UDP_IPv6ADDR_2);
  g_ipv6_hostaddr[2] = HTONS(CONFIG_EXAMPLES_UDP_IPv6ADDR_3);
  g_ipv6_hostaddr[3] = HTONS(CONFIG_EXAMPLES_UDP_IPv6ADDR_4);
  g_ipv6_hostaddr[4] = HTONS(CONFIG_EXAMPLES_UDP_IPv6ADDR_5);
  g_ipv6_hostaddr[5] = HTONS(CONFIG_EXAMPLES_UDP_IPv6ADDR_6);
  g_ipv6_hostaddr[6] = HTONS(CONFIG_EXAMPLES_UDP_IPv6ADDR_7);
  g_ipv6_hostaddr[7] = HTONS(CONFIG_EXAMPLES_UDP_IPv6ADDR_8);

  /* Default routine IPv6 address */

  g_ipv6_draddr[0] = HTONS(CONFIG_EXAMPLES_UDP_DRIPv6ADDR_1);
  g_ipv6_draddr[1] = HTONS(CONFIG_EXAMPLES_UDP_DRIPv6ADDR_2);
  g_ipv6_draddr[2] = HTONS(CONFIG_EXAMPLES_UDP_DRIPv6ADDR_3);
  g_ipv6_draddr[3] = HTONS(CONFIG_EXAMPLES_UDP_DRIPv6ADDR_4);
  g_ipv6_draddr[4] = HTONS(CONFIG_EXAMPLES_UDP_DRIPv6ADDR_5);
  g_ipv6_draddr[5] = HTONS(CONFIG_EXAMPLES_UDP_DRIPv6ADDR_6);
  g_ipv6_draddr[6] = HTONS(CONFIG_EXAMPLES_UDP_DRIPv6ADDR_7);
  g_ipv6_draddr[7] = HTONS(CONFIG_EXAMPLES_UDP_DRIPv6ADDR_8);

  /* IPv6 netmask */

  g_ipv6_netmask[0] = HTONS(CONFIG_EXAMPLES_UDP_IPv6NETMASK_1);
  g_ipv6_netmask[1] = HTONS(CONFIG_EXAMPLES_UDP_IPv6NETMASK_2);
  g_ipv6_netmask[2] = HTONS(CONFIG_EXAMPLES_UDP_IPv6NETMASK_3);
  g_ipv6_netmask[3] = HTONS(CONFIG_EXAMPLES_UDP_IPv6NETMASK_4);
  g_ipv6_netmask[4] = HTONS(CONFIG_EXAMPLES_UDP_IPv6NETMASK_5);
  g_ipv6_netmask[5] = HTONS(CONFIG_EXAMPLES_UDP_IPv6NETMASK_6);
  g_ipv6_netmask[6] = HTONS(CONFIG_EXAMPLES_UDP_IPv6NETMASK_7);
  g_ipv6_netmask[7] = HTONS(CONFIG_EXAMPLES_UDP_IPv6NETMASK_8);
#endif /* CONFIG_EXAMPLES_UDP_IPv6 && !CONFIG_NET_ICMPv6_AUTOCONF */

  if (!g_initialized)
    {
#ifdef CONFIG_EXAMPLES_UDP_IPv6
#ifdef CONFIG_NET_ICMPv6_AUTOCONF
      /* Perform ICMPv6 auto-configuration */

      netlib_icmpv6_autoconfiguration(DEVNAME);

#else /* CONFIG_NET_ICMPv6_AUTOCONF */

      /* Set up our fixed host address */

      netlib_set_ipv6addr(DEVNAME,
                          (FAR const struct in6_addr *)g_ipv6_hostaddr);

      /* Set up the default router address */

      netlib_set_dripv6addr(DEVNAME,
                            (FAR const struct in6_addr *)g_ipv6_draddr);

      /* Setup the subnet mask */

      netlib_set_ipv6netmask(DEVNAME,
                            (FAR const struct in6_addr *)g_ipv6_netmask);

#endif /* CONFIG_NET_ICMPv6_AUTOCONF */
#else /* CONFIG_EXAMPLES_UDP_IPv6 */

      struct in_addr addr;

      /* Set up our host address */

      addr.s_addr = HTONL(CONFIG_EXAMPLES_UDP_IPADDR);
      netlib_set_ipv4addr(DEVNAME, &addr);

      /* Set up the default router address */

      addr.s_addr = HTONL(CONFIG_EXAMPLES_UDP_DRIPADDR);
      netlib_set_dripv4addr(DEVNAME, &addr);

      /* Setup the subnet mask */

      addr.s_addr = HTONL(CONFIG_EXAMPLES_UDP_NETMASK);
      netlib_set_ipv4netmask(DEVNAME, &addr);

#endif /* CONFIG_EXAMPLES_UDP_IPv6 */

      /* New versions of netlib_set_ipvXaddr will not bring the network up,
       * So ensure the network is really up at this point.
       */

      netlib_ifup(DEVNAME);
      g_initialized = true;
    }

  return 0;
}

#endif /* CONFIG_EXAMPLES_UDP_NETINIT */