LLC_2_PDU_CMD_SABME
LLC_U_PDU_CMD(pdu) == LLC_2_PDU_CMD_SABME) {
LLC_U_PDU_CMD(pdu) == LLC_2_PDU_CMD_SABME ? 0 : 1;
case LLC_2_PDU_CMD_SABME:
pdu->ctrl_1 |= LLC_2_PDU_CMD_SABME;