[dpdk-dev] [PATCH v2 6/6] app/testpmd: add mempool flags parameter

David Marchand david.marchand at redhat.com
Wed Mar 20 10:23:56 CET 2019


On Wed, Mar 20, 2019 at 12:37 AM Jerin Jacob Kollanukkaran <
jerinj at marvell.com> wrote:

> On Tue, 2019-03-19 at 15:12 +0800, Xiaolong Ye wrote:
> > When create rte_mempool, flags can be parsed from command line.
> > Now, it is possible for testpmd to create a af_xdp friendly
> > mempool (which enable zero copy).
> >
> > Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
> > Signed-off-by: Xiaolong Ye <xiaolong.ye at intel.com>
> > ---
> >  app/test-pmd/parameters.c             | 12 ++++++++++++
> >  app/test-pmd/testpmd.c                | 17 ++++++++++-------
> >  app/test-pmd/testpmd.h                |  1 +
> >  doc/guides/testpmd_app_ug/run_app.rst |  4 ++++
>
> If I understand it correctly, The user needs to change all the
> application in order to avail zero copy feature of XDP.
>
> If so,
>
> How about creating wrapper mempool driver for xdp at drivers/mempool/?
> and mempool's best mempool feature to select the required mempool
> driver for XDP at runtime without changing the apps.
>
> see rte_mbuf_best_mempool_ops()
> see struct eth_dev_ops::pool_ops_supported
>

Glab to read this, I was under the same impression :-)


-- 
David Marchand


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