tee_shm_get_size
.u.fmem.size = tee_shm_get_size(shm),
msg_arg->params->u.tmem.size = tee_shm_get_size(shm);
arg->params[0].u.tmem.size = tee_shm_get_size(shm);
oic->in_msg.size = tee_shm_get_size(oic->in_shm);
oic->out_msg.size = tee_shm_get_size(oic->out_shm);