[PATCH 3/6] drivers/nfb: do not report zero-sized TX burst

[Martin Spinler]

On Mon, 2022-02-14 at 13:35 +0000, Ferruh Yigit wrote:
> On 2/14/2022 11:25 AM, spinler at cesnet.cz wrote:
> > From: Martin Spinler <spinler at cesnet.cz>
> > 
> > Zero-sized TX burst floods the log no more.
> > 
> 
> If you want this patch to be backported, you can update
> commit log as fix and add fixes & stable tags.

I don't think it is a fix, rather an unplesant behaviour in a specific
application. It doesn't happen in the test-pmd app.

> 
> > Signed-off-by: Martin Spinler <spinler at cesnet.cz>
> > ---
> >   drivers/net/nfb/nfb_tx.h | 5 ++++-
> >   1 file changed, 4 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/net/nfb/nfb_tx.h b/drivers/net/nfb/nfb_tx.h
> > index d3cbe3e6b3..910020e9e9 100644
> > --- a/drivers/net/nfb/nfb_tx.h
> > +++ b/drivers/net/nfb/nfb_tx.h
> > @@ -136,7 +136,10 @@ nfb_eth_ndp_tx(void *queue,
> >   
> >   	struct ndp_packet packets[nb_pkts];
> >   
> > -	if (unlikely(ndp->queue == NULL || nb_pkts == 0)) {
> > +	if (unlikely(nb_pkts == 0))
> > +		return 0;
> > +
> > +	if (unlikely(ndp->queue == NULL)) {
> >   		RTE_LOG(ERR, PMD, "TX invalid arguments!\n");
> >   		return 0;
> >   	}
>