From: "Wang, Haiyue" <haiyue.wang@intel.com>
To: Olivier Matz <olivier.matz@6wind.com>,
"Yigit, Ferruh" <ferruh.yigit@intel.com>
Cc: "Guo, Jia" <jia.guo@intel.com>,
"Wu, Jingjing" <jingjing.wu@intel.com>,
"Zhang, Qi Z" <qi.z.zhang@intel.com>,
"Xing, Beilei" <beilei.xing@intel.com>,
"dev@dpdk.org" <dev@dpdk.org>,
"Richardson, Bruce" <bruce.richardson@intel.com>
Subject: Re: [dpdk-dev] [PATCH v8] net/iavf: support flex desc metadata extraction
Date: Mon, 26 Oct 2020 11:41:19 +0000 [thread overview]
Message-ID: <BN8PR11MB37956F93964A82FBE3614CC7F7190@BN8PR11MB3795.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20201026093715.GJ1898@platinum>
Hi Olivier,
> -----Original Message-----
> From: Olivier Matz <olivier.matz@6wind.com>
> Sent: Monday, October 26, 2020 17:37
> To: Yigit, Ferruh <ferruh.yigit@intel.com>
> Cc: Guo, Jia <jia.guo@intel.com>; Wu, Jingjing <jingjing.wu@intel.com>; Zhang, Qi Z
> <qi.z.zhang@intel.com>; Xing, Beilei <beilei.xing@intel.com>; dev@dpdk.org; Wang, Haiyue
> <haiyue.wang@intel.com>; Richardson, Bruce <bruce.richardson@intel.com>
> Subject: Re: [PATCH v8] net/iavf: support flex desc metadata extraction
>
> Hi,
>
> On Wed, Oct 14, 2020 at 01:31:39PM +0100, Ferruh Yigit wrote:
> > On 10/13/2020 9:17 AM, Jeff Guo wrote:
> > > Enable metadata extraction for flexible descriptors in AVF, that would
> > > allow network function directly get metadata without additional parsing
> > > which would reduce the CPU cost for VFs. The enabling metadata
> > > extractions involve the metadata of VLAN/IPv4/IPv6/IPv6-FLOW/TCP/MPLS
> > > flexible descriptors, and the VF could negotiate the capability of
> > > the flexible descriptor with PF and correspondingly configure the
> > > specific offload at receiving queues.
> > >
> > > Signed-off-by: Jeff Guo <jia.guo@intel.com>
> > > Acked-by: Haiyue Wang <haiyue.wang@intel.com>
>
> [...]
>
> > > +EXPERIMENTAL {
> > > + global:
> > > +
> > > + # added in 20.11
> > > + rte_net_iavf_dynfield_proto_xtr_metadata_offs;
> > > + rte_net_iavf_dynflag_proto_xtr_vlan_mask;
> > > + rte_net_iavf_dynflag_proto_xtr_ipv4_mask;
> > > + rte_net_iavf_dynflag_proto_xtr_ipv6_mask;
> > > + rte_net_iavf_dynflag_proto_xtr_ipv6_flow_mask;
> > > + rte_net_iavf_dynflag_proto_xtr_tcp_mask;
> > > + rte_net_iavf_dynflag_proto_xtr_ip_offset_mask;
> >
> > As a namespace previously "rte_pmd_xxx" was used for PMD specific APIs, can
> > you please switch to that?
> > 'rte_net_' is used by the 'librte_net' library.
> >
> > Above list is the dynfield values, what is the correct usage for dynfields,
> > 1- Put dynfileds names in to the header, and application does a lookup
> > ('rte_mbuf_dynfield_lookup()') to get the dynfield values.
> > or
> > 2- Expose dynfield values to be accessed directly from application, as done above.
> >
> > @Oliver, can you please support.
> >
> > I can see (1) has advantage of portability if more than one PMD supports
> > same dynfield names, but that sees not a case for above ones.
>
> If I understand the question correctly, this is the same that was
> discussed here:
>
> http://inbox.dpdk.org/dev/20191030165626.w3flq5wdpitpsv2v@platinum/
>
> To me, exporting the variables containing the dynfield offsets is easier
> to use: we don't need to have additional private variables to store them
> in each API users (usually one static variable per file, which can be
> heavy).
No issue for one PMD, but if two PMDs share the same dynfields, the application
has to use two namespace variables to access the same value, like:
if (mb->ol_flags & PMD_A_DYNFIELD_B_MASK)
else if (mb->ol_flags & PMD_B_DYNFIELD_B_MASK)
This make the application code a little duplicated. ;-)
>
> Olivier
next prev parent reply other threads:[~2020-10-26 11:41 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-09 2:54 [dpdk-dev] [PATCH v1] " Jeff Guo
2020-09-17 3:00 ` Wang, Haiyue
2020-09-18 2:41 ` Guo, Jia
2020-09-23 7:45 ` [dpdk-dev] [PATCH v2] " Jeff Guo
2020-09-23 7:52 ` [dpdk-dev] [PATCH v3] " Jeff Guo
2020-09-23 8:10 ` Wang, Haiyue
2020-09-23 8:22 ` Guo, Jia
2020-09-23 15:36 ` [dpdk-dev] [PATCH v4] " Jeff Guo
2020-09-25 6:23 ` [dpdk-dev] [PATCH v5] " Jeff Guo
2020-09-25 6:33 ` Wang, Haiyue
2020-09-27 2:08 ` [dpdk-dev] [PATCH v6] " Jeff Guo
2020-09-27 3:00 ` Zhang, Qi Z
2020-09-28 15:59 ` Ferruh Yigit
2020-09-28 16:17 ` Wang, Haiyue
2020-09-28 16:21 ` Bruce Richardson
2020-09-28 16:29 ` Wang, Haiyue
2020-09-29 2:27 ` Guo, Jia
2020-09-29 6:10 ` [dpdk-dev] [PATCH v7] " Jeff Guo
2020-09-29 6:12 ` Jeff Guo
2020-10-13 8:17 ` [dpdk-dev] [PATCH v8] " Jeff Guo
2020-10-13 10:10 ` Zhang, Qi Z
2020-10-14 12:31 ` Ferruh Yigit
2020-10-14 14:03 ` Bruce Richardson
2020-10-15 3:40 ` Guo, Jia
2020-10-15 5:26 ` Guo, Jia
2020-10-15 8:33 ` Ferruh Yigit
2020-10-26 9:37 ` Olivier Matz
2020-10-26 11:41 ` Wang, Haiyue [this message]
2020-10-15 3:41 ` [dpdk-dev] [PATCH v9] " Jeff Guo
2020-10-27 5:04 ` [dpdk-dev] [PATCH v10] " Jeff Guo
2020-10-27 5:21 ` Wang, Haiyue
2020-10-27 8:27 ` Guo, Jia
2020-10-27 11:55 ` Zhang, Qi Z
2020-10-30 2:54 ` [dpdk-dev] [PATCH v11] " Jeff Guo
2020-10-30 8:34 ` [dpdk-dev] [PATCH v12] " Jeff Guo
2020-10-30 8:40 ` Jeff Guo
2020-10-30 9:35 ` Zhang, Qi Z
2020-10-30 10:51 ` Ferruh Yigit
2020-10-30 11:14 ` Zhang, Qi Z
2020-10-30 16:03 ` Ferruh Yigit
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=BN8PR11MB37956F93964A82FBE3614CC7F7190@BN8PR11MB3795.namprd11.prod.outlook.com \
--to=haiyue.wang@intel.com \
--cc=beilei.xing@intel.com \
--cc=bruce.richardson@intel.com \
--cc=dev@dpdk.org \
--cc=ferruh.yigit@intel.com \
--cc=jia.guo@intel.com \
--cc=jingjing.wu@intel.com \
--cc=olivier.matz@6wind.com \
--cc=qi.z.zhang@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).