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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (c) 2014-2018 Linaro Limited
*/
/**
* @file
*
* ODP UDP header
*/
#ifndef ODPH_UDP_H_
#define ODPH_UDP_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <odp_api.h>
#include <odp/helper/chksum.h>
/**
* @addtogroup odph_protocols
* @{
*/
/** UDP header length */
#define ODPH_UDPHDR_LEN 8
/** UDP header */
typedef struct ODP_PACKED {
odp_u16be_t src_port; /**< Source port */
odp_u16be_t dst_port; /**< Destination port */
odp_u16be_t length; /**< UDP datagram length in bytes (header+data) */
odp_u16be_t chksum; /**< UDP header and data checksum (0 if not used)*/
} odph_udphdr_t;
/**
* UDP checksum
*
* This function calculates the UDP checksum given an odp packet.
*
* @param pkt calculate chksum for pkt
* @return checksum value in BE endianness
*/
static inline uint16_t odph_ipv4_udp_chksum(odp_packet_t pkt)
{
uint16_t chksum;
int rc;
rc = odph_udp_tcp_chksum(pkt, ODPH_CHKSUM_RETURN, &chksum);
return (rc == 0) ? chksum : 0;
}
/** @cond _ODP_HIDE_FROM_DOXYGEN_ */
ODP_STATIC_ASSERT(sizeof(odph_udphdr_t) == ODPH_UDPHDR_LEN,
"ODPH_UDPHDR_T__SIZE_ERROR");
/** @endcond */
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif
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