Re: [dpdk-dev] Does I210 NIC support Flow director filters?

[Kamraan Nasim <knasim@sidebandnetworks.com>]

>>> update the RSS RETA table so that traffic doesn't get sent
>> to that queue via RSS. Is that what you are asking?

Thanks Bruce, that's exactly it.  Basically each filter will forward
traffic to a unique RSS queue which can allow me to calculate filter match
statistics for that queue(or filter). At that point I would like to drop
the filtered packet. Is there any way to drop the filtered packet in the
RSS queue without doing a rte_eth_rx_burst() and dropping it then?

--Kam

On Thu, Jan 15, 2015 at 9:44 AM, Bruce Richardson <
bruce.richardson@intel.com> wrote:

> On Wed, Jan 14, 2015 at 04:59:17PM -0500, Kamraan Nasim wrote:
> > Many thanks Helin and Bruce :)
> >
> > Now if 1Gb NICs don't support fdir filters then im wondering how would we
> > count the number of packets matching a filter.
> >
> > Regular 5tuple filters don't have any stats similar to "fdirmatch"(in the
> > rte_eth_stats <http://dpdk.org/doc/api/structrte__eth__stats.html>
> struct).
> > One way I can think of is to use regular ibytes/ipackets stats for the
> > queue to which the packets are being redirected in the 5tuple filter but
> > this seems a bit hacky + there is no way to distinguish this packet
> > throughput from the regular traffic that the NIC is forwarding to that
> > specific queue.
> >
> > Is there a way to EXCLUSIVELY bind a 5tuple filter to an RSS queue so
> that
> > only matched traffic is forwarded there?
> >
> >
> > --Kam
> >
>
> What you can do is use a 5-tuple filter to send traffic to a queue. What
> you
> can also do is update the RSS RETA table so that traffic doesn't get sent
> to that queue via RSS. Is that what you are asking?
>
> /Bruce
>
> > On Wed, Jan 14, 2015 at 5:27 AM, Bruce Richardson <
> > bruce.richardson@intel.com> wrote:
> >
> > > On Tue, Jan 13, 2015 at 11:21:08PM -0500, Kamraan Nasim wrote:
> > > > Hello,
> > > >
> > > > I've been using DPDK fdir filter APIs for 82599 NIC(Niantic) and they
> > > work
> > > > very well.
> > > >
> > > > Was wondering if I these could also be used for I210, 1Gbps NICs?
> > > >
> > > > The other option is to use 5tuple
> filters(rte_eth_dev_add_5tuple_filter
> > > > <
> > >
> http://dpdk.org/doc/api/rte__ethdev_8h.html#aaa28adafa65a4f47d4aeceaf1b08381b
> > > >),
> > > > however these do not support IPv6 yet.
> > > >
> > > >
> > > > Have people in the community had any luck with configuring L3/L4
> hardware
> > > > filters for the I210 NIC?
> > > >
> > > > Thanks,
> > > > Kam
> > >
> > > Flow director filters are not supported for 1G NICs. Sorry.
> > >
> > > /Bruce
> > >
>