tl_discon_ind_alloc
d_mp = tl_discon_ind_alloc(ECONNREFUSED, BADSEQNUM);
d_mp = tl_discon_ind_alloc(ECONNRESET, tep->te_seqno);
d_mp = tl_discon_ind_alloc(reason, tep->te_seqno);
static mblk_t *tl_discon_ind_alloc(uint32_t, t_scalar_t);