238 lines
7.2 KiB
C
238 lines
7.2 KiB
C
|
/****************************************************************************
|
||
|
|
* net/udp/udp_finddev.c
|
||
|
|
*
|
||
|
|
* Copyright (C) 2015 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) && defined(CONFIG_NET_UDP)
|
||
|
|
|
||
|
|
#include <nuttx/net/netdev.h>
|
||
|
|
#include <nuttx/net/ip.h>
|
||
|
|
|
||
|
|
#include "netdev/netdev.h"
|
||
|
|
#include "udp/udp.h"
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Private Data
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Private Functions
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Public Functions
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Function: udp_find_ipv4_device
|
||
|
|
*
|
||
|
|
* Description:
|
||
|
|
* Select the network driver to use with the IPv4 UDP transaction.
|
||
|
|
*
|
||
|
|
* Input Parameters:
|
||
|
|
* conn - UDP connection structure (not currently used).
|
||
|
|
*
|
||
|
|
* Returned Value:
|
||
|
|
* A pointer to the network driver to use.
|
||
|
|
*
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
#ifdef CONFIG_NET_IPv4
|
||
|
|
FAR struct net_driver_s *udp_find_ipv4_device(FAR struct udp_conn_s *conn,
|
||
|
|
in_addr_t ipv4addr)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_NETDEV_MULTINIC
|
||
|
|
FAR struct net_driver_s *dev;
|
||
|
|
|
||
|
|
/* There are multiple network devices. We need to select the device that
|
||
|
|
* is going to route the UDP packet based on the provided IP address.
|
||
|
|
*/
|
||
|
|
|
||
|
|
return netdev_findby_ipv4addr(conn->u.ipv4.laddr, ipv4addr);
|
||
|
|
|
||
|
|
#else
|
||
|
|
/* There is only a single network device... the one at the head of the
|
||
|
|
* g_netdevices list.
|
||
|
|
*/
|
||
|
|
|
||
|
|
return g_netdevices;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
#endif /* CONFIG_NET_IPv4 */
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Function: udp_find_ipv6_device
|
||
|
|
*
|
||
|
|
* Description:
|
||
|
|
* Select the network driver to use with the IPv6 UDP transaction.
|
||
|
|
*
|
||
|
|
* Input Parameters:
|
||
|
|
* conn - UDP connection structure (not currently used).
|
||
|
|
*
|
||
|
|
* Returned Value:
|
||
|
|
* A pointer to the network driver to use.
|
||
|
|
*
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
#ifdef CONFIG_NET_IPv6
|
||
|
|
FAR struct net_driver_s *udp_find_ipv6_device(FAR struct udp_conn_s *conn,
|
||
|
|
net_ipv6addr_t ipv6addr)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_NETDEV_MULTINIC
|
||
|
|
FAR struct net_driver_s *dev;
|
||
|
|
|
||
|
|
/* There are multiple network devices. We need to select the device that
|
||
|
|
* is going to route the UDP packet based on the provided IP address.
|
||
|
|
*/
|
||
|
|
|
||
|
|
return netdev_findby_ipv6addr(conn->u.ipv6.laddr, ipv6addr);
|
||
|
|
|
||
|
|
#else
|
||
|
|
/* There is only a single network device... the one at the head of the
|
||
|
|
* g_netdevices list.
|
||
|
|
*/
|
||
|
|
|
||
|
|
return g_netdevices;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
#endif /* CONFIG_NET_IPv6 */
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Function: udp_find_laddr_device
|
||
|
|
*
|
||
|
|
* Description:
|
||
|
|
* Select the network driver to use with the UDP transaction using the
|
||
|
|
* locally bound IP address.
|
||
|
|
*
|
||
|
|
* Input Parameters:
|
||
|
|
* conn - UDP connection structure (not currently used).
|
||
|
|
*
|
||
|
|
* Returned Value:
|
||
|
|
* A pointer to the network driver to use.
|
||
|
|
*
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
FAR struct net_driver_s *udp_find_laddr_device(FAR struct udp_conn_s *conn)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_NETDEV_MULTINIC
|
||
|
|
FAR struct net_driver_s *dev;
|
||
|
|
|
||
|
|
/* There are multiple network devices. We need to select the device that
|
||
|
|
* is going to route the UDP packet based on the provided IP address.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef CONFIG_NET_IPv4
|
||
|
|
#ifdef CONFIG_NET_IPv6
|
||
|
|
if (conn->domain == PF_INET)
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
return upd_find_ipv4_device(conn, conn->u.ipv4.laddr);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef CONFIG_NET_IPv6
|
||
|
|
#ifdef CONFIG_NET_IPv4
|
||
|
|
else
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
return upd_find_ipv6_device(conn, conn->u.ipv6.laddr);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#else
|
||
|
|
/* There is only a single network device... the one at the head of the
|
||
|
|
* g_netdevices list.
|
||
|
|
*/
|
||
|
|
|
||
|
|
return g_netdevices;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Function: udp_find_raddr_device
|
||
|
|
*
|
||
|
|
* Description:
|
||
|
|
* Select the network driver to use with the UDP transaction using the
|
||
|
|
* remote IP address.
|
||
|
|
*
|
||
|
|
* Input Parameters:
|
||
|
|
* conn - UDP connection structure (not currently used).
|
||
|
|
*
|
||
|
|
* Returned Value:
|
||
|
|
* A pointer to the network driver to use.
|
||
|
|
*
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
FAR struct net_driver_s *udp_find_raddr_device(FAR struct udp_conn_s *conn)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_NETDEV_MULTINIC
|
||
|
|
FAR struct net_driver_s *dev;
|
||
|
|
|
||
|
|
/* There are multiple network devices. We need to select the device that
|
||
|
|
* is going to route the UDP packet based on the provided IP address.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifdef CONFIG_NET_IPv4
|
||
|
|
#ifdef CONFIG_NET_IPv6
|
||
|
|
if (conn->domain == PF_INET)
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
return upd_find_ipv4_device(conn, conn->u.ipv4.raddr);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef CONFIG_NET_IPv6
|
||
|
|
#ifdef CONFIG_NET_IPv4
|
||
|
|
else
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
return upd_find_ipv6_device(conn, conn->u.ipv6.raddr);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#else
|
||
|
|
/* There is only a single network device... the one at the head of the
|
||
|
|
* g_netdevices list.
|
||
|
|
*/
|
||
|
|
|
||
|
|
return g_netdevices;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* CONFIG_NET && CONFIG_NET_UDP */
|