From: Vladimir Medvedkin <medvedkinv@gmail.com>
To: Kamraan Nasim <knasim@sidebandnetworks.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>, Jun Du <jdu@sidebandnetworks.com>
Subject: Re: [dpdk-dev] Changes to 5tuple IPv4 filters in dpdk v2.0
Date: Wed, 5 Aug 2015 00:40:36 +0300 [thread overview]
Message-ID: <CANDrEHmcFirq1CHS7TTxZLRjaMt9sUuGBBOmWNjH_B9XjspVqA@mail.gmail.com> (raw)
In-Reply-To: <CAPrTskjdDc1GPUUSCRjG1r+TjodXXd2+=2J7M6c=jV8+-kpRhA@mail.gmail.com>
Hi Kam,
1) The reason is discussed in
http://dpdk.org/ml/archives/dev/2014-September/005179.html
2) No, it's still not supported (on current NICs). At the moment ntuple is
supported only by igb and ixgbe. If you look at
drivers/net/ixgbe/ixgbe_ethdev.c you can see ntuple_filter_to_5tuple
function which translate rte_eth_ntuple_filter to ixgbe_5tuple_filter_info,
so mask can be either UINT32_MAX or 0. It's hardware limitation (see 82599
datasheet 7.1.2.5 L3/L4 5-tuple Filters).
Regards,
Vladimir
2015-08-04 23:44 GMT+03:00 Kamraan Nasim <knasim@sidebandnetworks.com>:
> Hi DPDK community,
>
> I've been using DPDK v1.7 and v1.8 for the past year. On updating to
> v2.0.0, I see that *rte_5tuple_filter* has been deprecated as well as the
> associated install/remove call,* rte_eth_dev_add_5tuple_filter()*
>
> I now see that rte_eth_ntuple_filter has been added in place.
>
> 1) Is there a specific reason for removing backward compatibility? As in is
> there a known issue with rte_5tuple_filter infra that was discovered in
> v2.0?
>
>
> 2) One limitation of rte_5tuple_filter was that it could not be used to
> filter /24 or /16 ip addresses(subnet filtering). I now see that the
> src_ip_mask and dst_ip_mask is 32 bits and a separate
> RTE_NTUPLE_FLAGS_SRC_IP
> <
> http://dpdk.org/doc/api/rte__eth__ctrl_8h.html#aff1204ca0b33628610956f840dd9b206
> >
> has been introduced. Does this imply that we NOW support subnet
> filtering(use mask for wildcard masking)?
>
>
> Any help or pointers on the subject will be greatly appreciated!!!
>
>
> Thanks,
> Kam
>
next prev parent reply other threads:[~2015-08-04 21:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-04 20:44 Kamraan Nasim
2015-08-04 21:40 ` Vladimir Medvedkin [this message]
2015-08-05 14:53 ` Kamraan Nasim
2015-08-05 15:18 ` Vladimir Medvedkin
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