/* Try to post a callback-message to the tcpip_thread mbox. Same as  */
err_t tcpip_callbackmsg_trycallback_fromisr(struct tcpip_callback_msg *msg)
/* Try to post a callback-message to the tcpip_thread mbox. Same as  */
err_t tcpip_callbackmsg_trycallback_fromisr(struct tcpip_callback_msg *msg)
{
  LWIP_ASSERT("Invalid mbox", sys_mbox_valid_val(tcpip_mbox));
  return sys_mbox_trypost_fromisr(&tcpip_mbox, msg);
}