sctp_findasoc_ep_asocid_locked
stcb = sctp_findasoc_ep_asocid_locked(inp, sinfo_assoc_id, 1);
stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t)id, 0);
struct sctp_tcb *sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock);