fxp_cb_tx
struct fxp_cb_tx *txp;
bzero(sc->sc_ctrl->tx_cb, sizeof(struct fxp_cb_tx) * FXP_NTXCB);
sizeof(struct fxp_cb_tx) * FXP_NTXCB);
struct fxp_cb_tx *txc;
struct fxp_cb_tx *cbl_base; /* base of TxCB list */
sizeof(struct fxp_cb_tx), (p))
struct fxp_cb_tx *tx_cb;
struct fxp_cb_tx tx_cb[FXP_NTXCB];