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From: "Yang, Zhiyong" <zhiyong.yang@intel.com>
To: Yuanhan Liu <yliu@fridaylinux.org>
CC: "dev@dpdk.org" <dev@dpdk.org>, "Wang, Zhihong" <zhihong.wang@intel.com>,
 "Mcnamara, John" <john.mcnamara@intel.com>, "thomas@monjalon.net"
 <thomas@monjalon.net>, Olivier Matz <olivier.matz@6wind.com>
Thread-Topic: [dpdk-dev] [PATCH] doc: announce API and ABI change for ethdev
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Date: Fri, 4 Aug 2017 05:36:42 +0000
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 <20170804040728.GE9612@yliu-home>
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Subject: Re: [dpdk-dev] [PATCH] doc: announce API and ABI change for ethdev
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Hi, yuanhan:

> -----Original Message-----
> From: Yuanhan Liu [mailto:yliu@fridaylinux.org]
> Sent: Friday, August 4, 2017 12:07 PM
> To: Yang, Zhiyong <zhiyong.yang@intel.com>
> Cc: dev@dpdk.org; Wang, Zhihong <zhihong.wang@intel.com>; Mcnamara,
> John <john.mcnamara@intel.com>; oilvier.matz@6wind.com;
> thomas@monjalon.net
> Subject: Re: [dpdk-dev] [PATCH] doc: announce API and ABI change for ethd=
ev
>=20
> On Wed, Jul 12, 2017 at 03:58:46PM +0800, Zhiyong Yang wrote:
> >   This is an API/ABI change notice for DPDK 17.11 on redefinition of
>=20
> Don't put 2 whitespace char indentation here.
>=20
> > port_id. port_id is defined as uint8_t by now, which is just ranged
> > from 0 to 255. For more and more scenerioes, more than 256 devices are
> > needed to support for vdev scalability.
> >
> >   It is necessary for redefinition of port_id to extend from 1 bytes
> > to 2 bytes. All ethdev APIs and use cases related to port_id will be
> > changed at the same time.
> >
> > Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>
> > ---
> >  doc/guides/rel_notes/deprecation.rst | 4 ++++
> >  1 file changed, 4 insertions(+)
> >
> > diff --git a/doc/guides/rel_notes/deprecation.rst
> > b/doc/guides/rel_notes/deprecation.rst
> > index 257dcba..f265980 100644
> > --- a/doc/guides/rel_notes/deprecation.rst
> > +++ b/doc/guides/rel_notes/deprecation.rst
> > @@ -54,6 +54,10 @@ Deprecation Notices
> >    Target release for removal of the legacy API will be defined once mo=
st
> >    PMDs have switched to rte_flow.
> >
> > +* ABI/API changes are planned for 17.11 in the "rte_eth_dev_data" stru=
cture.
>=20
> That's for ABI only and you missed the API part. Meaning, you need also m=
ention
> that all APIs have port_id parameter will be changed too.
>=20
> Also, rte_eth_dev_data is not the only structure has ABI changes. There a=
re few
> more (for instance, rte_port_ethdev.h). As said before, you don't have to=
 list all
> of them, but at least you should not list one example only as it seems th=
at's the
> only structure has ABI change.
>=20
> > +  Change the definition of port_id from 8bits to 16bits in order to
> > + support  more than 256 devices in DPDK.
>=20
> 8bits -> 8 bits. You might want to reword it further. Besides that, this =
change is
> indeed needed. Thus,
>=20
> Acked-by: Yuanhan Liu <yliu@fridaylinux.org>
>=20
> 	--yliu

Thank you, yuanhan. I have reworded and sent v2  according to your comments=
.

Zhiyong Yang

> > +
> >  * librte_table: The ``key_mask`` parameter will be added to all the ha=
sh tables
> >    that currently do not have it, as well as to the hash compute functi=
on
> prototype.
> >    The non-"do-sig" versions of the hash tables will be removed
> > --
> > 2.9.3