RE: [v6,net-next,15/15] net: fec: add AF_XDP zero-copy support

[Wei Fang]

> > +	bdp->cbd_bufaddr = cpu_to_fec32(dma);
> > +	bdp->cbd_datlen = cpu_to_fec16(len);
> > +
> > +	if (fep->bufdesc_ex) {
> > +		struct bufdesc_ex *ebdp = (struct bufdesc_ex *)bdp;
> > +
> > +		if (fep->quirks & FEC_QUIRK_HAS_AVB)
> > +			estatus |= FEC_TX_BD_FTYPE(txq->bd.qid);
> > +
> > +		ebdp->cbd_bdu = 0;
> > +		ebdp->cbd_esc = cpu_to_fec32(estatus);
> > +	}
> > +
> > +	status |= (BD_ENET_TX_READY | BD_ENET_TX_TC);
> > +	bdp->cbd_sc = cpu_to_fec16(status);
> > +	dma_wmb();
> 
> Is there a missing dma_wmb() before setting BD_ENET_TX_READY?

Yes, my bad, I will fix it.