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#ifndef UDP_ENB_TASK_H_
#define UDP_ENB_TASK_H_
#include "enb_config.h"
#include "intertask_interface_types.h"
/** \brief UDP recv callback prototype. Will be called every time a payload is
* received on socket.
* \param port Port on which data had been received
* \param address Sender Ipv4 address
* \param buffer Pointer to data (should be freed by user)
* \param length Length of message received
* \param arg_p User provided argument (transparent for wrappers)
* @returns Execution result
*/
typedef int (*udp_recv_callback)(uint16_t port,
uint32_t address,
uint8_t *buffer,
uint32_t length,
void *arg_p);
typedef struct {
int sd; /* Socket descriptor to use */
pthread_t listener_thread; /* Thread affected to recv */
char *local_address; /* Local ipv4 address to use */
uint16_t local_port; /* Local port to use */
task_id_t task_id; /* Task who has requested the new endpoint */
} udp_data_t;
/** \brief Create new datagram connection-less socket and create new thread
* for data in downstream.
* \param ip_addr Local IPv4 address to use
* \param port Local port to use
* \param udp_data_p
* \param recv_callback Pointer to data (should be freed by user)
* \param arg_p Optionnal argument to pass to recv_callback
* @returns < 0 on failure or socket descriptor on success
*/
int udp_create_connection(char *ip_addr, uint16_t port,
udp_data_t *udp_data_p,
udp_recv_callback recv_callback,
void *arg_p);
/** \brief Send buffer to remote peer.
* \param sd socket descriptor to use
* \param port remote port
* \param address remote address
* \param buffer Data buffer to send
* \param length Buffer length
* @returns < 0 on failure or socket descriptor on success
*/
int udp_send_to(int sd, uint16_t port, uint32_t address,
const uint8_t *buffer, uint32_t length);
/** \brief UDP ITTI task on eNB.
* \param args_p
* @returns always NULL
*/
void *udp_eNB_task(void *args_p);
/** \brief init UDP layer.
* \param enb_config_p configuration of eNB
* @returns always 0
*/
int udp_enb_init(const Enb_properties_t *enb_config_p);