LCP_ECHO_REQ      217 drivers/net/wan/hdlc_ppp.c 	if (pid == PID_LCP && (code == LCP_ECHO_REQ || code == LCP_ECHO_REPLY))
LCP_ECHO_REQ      496 drivers/net/wan/hdlc_ppp.c 		case LCP_ECHO_REQ: /* send Echo-Reply */
LCP_ECHO_REQ      592 drivers/net/wan/hdlc_ppp.c 			ppp_tx_cp(proto->dev, PID_LCP, LCP_ECHO_REQ,