Function netconn_apimsg

components/net/lwip/lwip-2.1.2/src/api/api_lib.c:117–136

* Call the lower part of a netconn_* function * This function is then running in the thread context * of tcpip_thread and has exclusive access to lwIP core code. * * @param fn function to call * @param apimsg a struct containing the function to call and its parameters * @return ERR_OK if the function was called, another err_t if not */

 * @return ERR_OK if the function was called, another err_t if not
 */
static err_t
netconn_apimsg(tcpip_callback_fn fn, struct api_msg *apimsg)
{
  err_t err;

#ifdef LWIP_DEBUG
  /* catch functions that don't set err */
  apimsg->err = ERR_VAL;
#endif /* LWIP_DEBUG */

#if LWIP_NETCONN_SEM_PER_THREAD
  apimsg->op_completed_sem = LWIP_NETCONN_THREAD_SEM_GET();
#endif /* LWIP_NETCONN_SEM_PER_THREAD */

  err = tcpip_send_msg_wait_sem(fn, apimsg, LWIP_API_MSG_SEM(apimsg));
  if (err == ERR_OK) {
    return apimsg->err;
  }
  return err;
}

/**
 * Create a new netconn (of a specific type) that has a callback function.