pptp_echo_rq
struct pptp_echo_rq *echo_rq;
if (lpkt < sizeof(struct pptp_echo_rq)) {
(int)sizeof(struct pptp_echo_rq));
echo_rq = (struct pptp_echo_rq *)pkt;
struct pptp_echo_rq *echo_rq;
echo_rq = (struct pptp_echo_rq *)bytebuffer_pointer(_this->send_buf);
if (echo_rq == NULL || lpkt < sizeof(struct pptp_echo_rq)) {
memset(echo_rq, 0, sizeof(struct pptp_echo_rq));
pptp_init_header(&echo_rq->header, sizeof(struct pptp_echo_rq),
pptp_ctrl_output(_this, NULL, sizeof(struct pptp_echo_rq));