sctp_pdapi_event
struct sctp_pdapi_event sn_pdapi_event;
struct sctp_pdapi_event *pdapi;
m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
pdapi = mtod(m_notify, struct sctp_pdapi_event *);
memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);