nuttx/net/utils/net_udpchksum.c

/****************************************************************************
 * net/utils/net_udpchksum.c
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * 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 <nuttx/config.h>
#include <nuttx/net/netdev.h>

#include "utils/utils.h"

#ifdef CONFIG_NET_UDP

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

/****************************************************************************
 * Name: udp_ipv4_chksum
 *
 * Description:
 *   Calculate the UDP/IPv4 checksum of the packet in d_buf and d_appdata.
 *
 ****************************************************************************/

#if defined(CONFIG_NET_UDP_CHECKSUMS) && defined(CONFIG_NET_IPv4)
uint16_t udp_ipv4_chksum(FAR struct net_driver_s *dev)
{
  return ipv4_upperlayer_chksum(dev, IP_PROTO_UDP);
}
#endif

/****************************************************************************
 * Name: udp_ipv6_chksum
 *
 * Description:
 *   Calculate the UDP/IPv6 checksum of the packet in d_buf and d_appdata.
 *
 ****************************************************************************/

#if defined(CONFIG_NET_UDP_CHECKSUMS) && defined(CONFIG_NET_IPv6)
uint16_t udp_ipv6_chksum(FAR struct net_driver_s *dev)
{
  return ipv6_upperlayer_chksum(dev, IP_PROTO_UDP, IPv6_HDRLEN);
}
#endif

#endif /* CONFIG_NET_UDP */