FXP_CB_COMMAND_S
FXP_CB_COMMAND_S);
FXP_CB_COMMAND_S | FXP_CB_COMMAND_I);
sc->fxp_desc.tx_last->tx_cb->cb_command &= htole16(~FXP_CB_COMMAND_S);
tcbp->cb_command = htole16(FXP_CB_COMMAND_NOP | FXP_CB_COMMAND_S);