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/****************************************************************************
* net/tcp/tcp_ipselect.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>
#ifdef CONFIG_NET
#include <stdint.h>
#include <debug.h>
#include <net/if.h>
#include <nuttx/net/netdev.h>
#include <nuttx/net/tcp.h>
#include "tcp/tcp.h"
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Function: tcp_ipv4_select
*
* Description:
* Configure to send or receive an TCP IPv4 packet
*
****************************************************************************/
#ifdef CONFIG_NET_IPv4
void tcp_ipv4_select(FAR struct net_driver_s *dev)
{
/* Clear a bit in the d_flags to distinguish this from an IPv6 packet */
IFF_SET_IPv4(dev->d_flags);
/* Set the offset to the beginning of the TCP data payload */
dev->d_appdata = &dev->d_buf[IPv4TCP_HDRLEN + NET_LL_HDRLEN(dev)];
}
#endif /* CONFIG_NET_IPv4 */
/****************************************************************************
* Function: tcp_ipv6_select
*
* Description:
* Configure to send or receive an TCP IPv6 packet
*
****************************************************************************/
#ifdef CONFIG_NET_IPv6
void tcp_ipv6_select(FAR struct net_driver_s *dev)
{
/* Set a bit in the d_flags to distinguish this from an IPv6 packet */
IFF_SET_IPv6(dev->d_flags);
/* Set the offset to the beginning of the TCP data payload */
dev->d_appdata = &dev->d_buf[IPv6TCP_HDRLEN + NET_LL_HDRLEN(dev)];
}
#endif /* CONFIG_NET_IPv6 */
#endif /* CONFIG_NET */
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