CMD_FLEX
tx_cmd->cmd.command = CMD_FLEX | CmdTx;
rfd->cmd = CMD_FLEX;
rfd->cmd = CMD_EOL|CMD_FLEX;
lp->rfds[i].cmd = CMD_FLEX;
lp->rfds[rx_ring_size-1].cmd = CMD_EOL|CMD_FLEX;
rfd->cmd = CMD_EOL|CMD_FLEX;
rfd->v_prev->cmd = CMD_FLEX;
tx_cmd->cmd.command = SWAP16(CMD_FLEX | CmdTx);
rfd->cmd = SWAP16(CMD_FLEX);
rfd->cmd = SWAP16(CMD_EOL|CMD_FLEX);
dma->rfds[i].cmd = SWAP16(CMD_FLEX);
dma->rfds[rx_ring_size-1].cmd = SWAP16(CMD_EOL|CMD_FLEX);
rfd->cmd = SWAP16(CMD_EOL|CMD_FLEX);
rfd->v_prev->cmd = SWAP16(CMD_FLEX);