SCTP_MSG_FLAG_CHUNKED
#define SCTP_MSG_SET_CHUNKED(mp) ((mp)->b_flag |= SCTP_MSG_FLAG_CHUNKED)
#define SCTP_MSG_CLEAR_CHUNKED(mp)((mp)->b_flag &= ~SCTP_MSG_FLAG_CHUNKED)
#define SCTP_IS_MSG_CHUNKED(mp) ((mp)->b_flag & SCTP_MSG_FLAG_CHUNKED)