text: /****************************************************************************
   * net/net_initialize.c
   *
   *   Copyright (C) 2007-2009, 2011-2015, 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>
  #ifdef CONFIG_NET
  
  #include <debug.h>
  
  #include <nuttx/net/net.h>
  
  #include "socket/socket.h"
  #include "devif/devif.h"
  #include "netdev/netdev.h"
  #include "ipforward/ipforward.h"
  #include "arp/arp.h"
  #include "sixlowpan/sixlowpan.h"
  #include "neighbor/neighbor.h"
  #include "icmp/icmp.h"
  #include "icmpv6/icmpv6.h"
  #include "tcp/tcp.h"
  #include "udp/udp.h"
  #include "pkt/pkt.h"
  #include "ieee802154/ieee802154.h"
  #include "local/local.h"
  #include "igmp/igmp.h"
  #include "route/route.h"
  #include "usrsock/usrsock.h"
  #include "utils/utils.h"
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: net_setup
   *
   * Description:
   *   This is called from the OS initialization logic at power-up reset in
   *   order to configure networking data structures.  This is called prior
   *   to platform-specific driver initialization so that the networking
   *   subsystem is prepared to deal with network driver initialization
   *   actions.
   *
   *   Actions performed in this initialization phase assume that base OS
   *   facilities such as semaphores are available but this logic cannot
   *   depend upon OS resources such as interrupts or timers which are not
   *   yet available.
   *
   * Input Parameters:
   *   None
   *
   * Returned Value:
   *   None
   *
   ****************************************************************************/
  
  void net_setup(void)
  {
    /* Initialize the locking facility */
  
    net_lockinitialize();
  
    /* Clear the ARP table */
  
    arp_reset();
  
  #ifdef CONFIG_NET_IPv6
    /* Initialize the Neighbor Table data structures */
  
    neighbor_initialize();
  
  #ifdef CONFIG_NET_6LOWPAN
    /* Initialize 6LoWPAN data structures */
  
    sixlowpan_initialize();
  #endif
  #endif /* CONFIG_NET_IPv6 */
  
    /* Initialize the device interface layer */
  
    devif_initialize();
  
  #ifdef HAVE_FWDALLOC
    /* Initialize IP forwarding support */
  
    ipfwd_initialize();
  #endif
  
  #ifdef CONFIG_NET_PKT
    /* Initialize packet socket support */
  
    pkt_initialize();
  #endif
  
  #ifdef CONFIG_NET_ICMP_SOCKET
    /* Initialize IPPPROTO_ICMP socket support */
  
    icmp_sock_initialize();
  #endif
  
  #ifdef CONFIG_NET_ICMPv6_SOCKET
    /* Initialize IPPPROTO_ICMP6 socket support */
  
    icmpv6_sock_initialize();
  #endif
  
  #ifdef CONFIG_NET_IEEE802154
    /* Initialize IEEE 802.15.4  socket support */
  
    ieee802154_initialize();
  #endif
  
  #ifdef CONFIG_NET_LOCAL
    /* Initialize the local, "Unix domain" socket support */
  
    local_initialize();
  #endif
  
  #ifdef NET_TCP_HAVE_STACK
    /* Initialize the listening port structures */
  
    tcp_listen_initialize();
  
    /* Initialize the TCP/IP connection structures */
  
    tcp_initialize();
  
    /* Initialize the TCP/IP write buffering */
  
  #ifdef CONFIG_NET_TCP_WRITE_BUFFERS
    tcp_wrbuffer_initialize();
  #endif
  #endif /* CONFIG_NET_TCP */
  
  #ifdef NET_UDP_HAVE_STACK
    /* Initialize the UDP connection structures */
  
    udp_initialize();
  #endif
  
  #ifdef CONFIG_NET_IGMP
    /* Initialize IGMP support */
  
    igmp_initialize();
  #endif
  
  #ifdef CONFIG_NET_ROUTE
    /* Initialize the routing table */
  
    net_init_route();
  #endif
  
  #ifdef CONFIG_NET_USRSOCK
    /* Initialize the user-space socket API */
  
    usrsock_initialize();
  #endif
  }
  
  /****************************************************************************
   * Name: net_initialize
   *
   * Description:
   *   This function is called from the OS initialization logic at power-up
   *   reset AFTER initialization of hardware facilities such as timers and
   *   interrupts.   This logic completes the initialization started by
   *   net_setup().
   *
   * Input Parameters:
   *   None
   *
   * Returned Value:
   *   None
   *
   ****************************************************************************/
  
  void net_initialize(void)
  {
    /* Initialize the periodic ARP timer */
  
    arp_timer_initialize();
  }
  
  #endif /* CONFIG_NET */
  