[dpdk-stable] [PATCH v2 2/5] app/testpmd: enable burst stats for flowgen mode rx path

[Honnappa Nagarahalli]

<snip>

> Subject: Re: [PATCH v2 2/5] app/testpmd: enable burst stats for flowgen mode
> rx path
> 
> On 6/26/2020 11:09 PM, Honnappa Nagarahalli wrote:
> > Enable missing burst stats for rx path for flowgen mode.
> >
> > Fixes: e9e23a617eb8 ("app/testpmd: add flowgen forwarding engine")
> > Cc: stable at dpdk.org
> >
> > Signed-off-by: Honnappa Nagarahalli <honnappa.nagarahalli at arm.com>
> > Reviewed-by: Phil Yang <phil.yang at arm.com>
> > Reviewed-by: Ruifeng Wang <ruifeng.wang at arm.com>
> > Tested-by: Phil Yang <phil.yang at arm.com>
> > ---
> >  app/test-pmd/flowgen.c | 4 ++++
> >  1 file changed, 4 insertions(+)
> >
> > diff --git a/app/test-pmd/flowgen.c b/app/test-pmd/flowgen.c index
> > 4bd351e67..011887c61 100644
> > --- a/app/test-pmd/flowgen.c
> > +++ b/app/test-pmd/flowgen.c
> > @@ -111,6 +111,10 @@ pkt_burst_flow_gen(struct fwd_stream *fs)
> >  	/* Receive a burst of packets and discard them. */
> >  	nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
> >  				 nb_pkt_per_burst);
> > +#ifdef RTE_TEST_PMD_RECORD_BURST_STATS
> > +	fs->rx_burst_stats.pkt_burst_spread[nb_rx]++;
> > +#endif
> > +
> 
> Flow generator is for Tx, what is the point of getting stats for the Rx?
Is there any reason for this mode to receive the packets?
The reason I ask is, the core cycles include the RX call as well. So, we have cycles/packet that includes the RX call and burst stats that does not show the RX burst stats.
Do we need to remove the call to rte_eth_rx_burst API?