/****************************************************************************
 * examples/tcpblaster/tcpblaster_netinit.c
 *
 *   Copyright (C) 2018 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 "config.h"

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

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

#include "netutils/netlib.h"

#include "tcpblaster.h"

#ifdef CONFIG_EXAMPLES_TCPBLASTER_INIT

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

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

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

#if defined(CONFIG_EXAMPLES_TCPBLASTER_INIT) && \
    defined(CONFIG_EXAMPLES_TCPBLASTER_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_TCPBLASTER_INIT && CONFIG_EXAMPLES_TCPBLASTER_IPv6 && !CONFIG_NET_ICMPv6_AUTOCONF */

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

void tcpblaster_initialize(void)
{
#ifndef CONFIG_EXAMPLES_TCPBLASTER_IPv6
  struct in_addr addr;
#endif
#ifdef CONFIG_EXAMPLES_TCPBLASTER_NOMAC
  uint8_t mac[IFHWADDRLEN];
#endif

#if defined(CONFIG_EXAMPLES_TCPBLASTER_INIT) && \
    defined(CONFIG_EXAMPLES_TCPBLASTER_IPv6) && \
    !defined(CONFIG_NET_ICMPv6_AUTOCONF)
  /* Our host IPv6 address */

  g_ipv6_hostaddr[0] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6ADDR_1);
  g_ipv6_hostaddr[1] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6ADDR_2);
  g_ipv6_hostaddr[2] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6ADDR_3);
  g_ipv6_hostaddr[3] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6ADDR_4);
  g_ipv6_hostaddr[4] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6ADDR_5);
  g_ipv6_hostaddr[5] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6ADDR_6);
  g_ipv6_hostaddr[6] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6ADDR_7);
  g_ipv6_hostaddr[7] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6ADDR_8);

  /* Default routine IPv6 address */

  g_ipv6_draddr[0] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_DRIPv6ADDR_1);
  g_ipv6_draddr[1] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_DRIPv6ADDR_2);
  g_ipv6_draddr[2] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_DRIPv6ADDR_3);
  g_ipv6_draddr[3] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_DRIPv6ADDR_4);
  g_ipv6_draddr[4] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_DRIPv6ADDR_5);
  g_ipv6_draddr[5] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_DRIPv6ADDR_6);
  g_ipv6_draddr[6] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_DRIPv6ADDR_7);
  g_ipv6_draddr[7] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_DRIPv6ADDR_8);

  /* IPv6 netmask */

  g_ipv6_netmask[0] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6NETMASK_1);
  g_ipv6_netmask[1] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6NETMASK_2);
  g_ipv6_netmask[2] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6NETMASK_3);
  g_ipv6_netmask[3] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6NETMASK_4);
  g_ipv6_netmask[4] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6NETMASK_5);
  g_ipv6_netmask[5] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6NETMASK_6);
  g_ipv6_netmask[6] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6NETMASK_7);
  g_ipv6_netmask[7] = HTONS(CONFIG_EXAMPLES_TCPBLASTER_IPv6NETMASK_8);

#endif

  /* Many embedded network interfaces must have a software assigned MAC */

#ifdef CONFIG_EXAMPLES_TCPBLASTER_NOMAC
  mac[0] = 0x00;
  mac[1] = 0xe0;
  mac[2] = 0xde;
  mac[3] = 0xad;
  mac[4] = 0xbe;
  mac[5] = 0xef;
  netlib_setmacaddr(DEVNAME, mac);
#endif

#ifdef CONFIG_EXAMPLES_TCPBLASTER_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);

  /* 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);

#endif /* CONFIG_NET_ICMPv6_AUTOCONF */
#else /* CONFIG_EXAMPLES_TCPBLASTER_IPv6 */

  /* Set up our host address */

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

  /* Set up the default router address */

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

  /* Setup the subnet mask */

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

#endif /* CONFIG_EXAMPLES_TCPBLASTER_IPv6 */
}

#endif /* CONFIG_EXAMPLES_TCPBLASTER_INIT */
