t4_eq_credit
eq->tse_spg = t4_eq_credit(eq, eq->tse_qsize);
struct fl_desc *fld = t4_eq_credit(eq, eq->tse_pidx);
t4_eq_host_credit_t *hc = t4_eq_credit(eq, eq->tse_pidx);
struct fw_eth_tx_pkts_wr *wr = t4_eq_credit(eq, eq->tse_pidx);
struct fw_eth_tx_pkt_wr *wr = t4_eq_credit(eq, eq->tse_pidx);
*(struct fw_eq_flush_wr *)t4_eq_credit(eq, eq->tse_pidx) = wr;
uint64_t *src = t4_eq_credit(eq, credit_idx);