Hi Bruce,
Thank you very much for these comments which really make sense for me. I will
correct these problems in the next version.
Thanks again.
Cheng
> -----Original Message-----
> From: Bruce Richardson <bruce.richard...@intel.com>
> Sent: Monday, July 13, 2020 9:28 PM
> To: Jiang, Cheng1 <cheng1.ji...@intel.com>
> Cc: dev@dpdk.org; Fu, Patrick <patrick...@intel.com>
> Subject: Re: [PATCH 20.11] raw/ioat: added a flag to control copying handle
> parameters
>
> On Mon, Jul 13, 2020 at 07:15:19AM +0000, Cheng Jiang wrote:
> > Added a flag which controls whether rte_ioat_enqueue_copy and
> > rte_ioat_completed_copies function should process handle parameters to
> > improve the performance when handle parameters are not necessary to
> > use. This is targeting
> > 20.11 release.
> >
> > Signed-off-by: Cheng Jiang <cheng1.ji...@intel.com>
> > ---
> > drivers/raw/ioat/ioat_rawdev.c | 1 +
> > drivers/raw/ioat/rte_ioat_rawdev.h | 14 +++++++++++---
> > 2 files changed, 12 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/raw/ioat/ioat_rawdev.c
> > b/drivers/raw/ioat/ioat_rawdev.c index 87fd088aa..5bf030785 100644
> > --- a/drivers/raw/ioat/ioat_rawdev.c
> > +++ b/drivers/raw/ioat/ioat_rawdev.c
> > @@ -57,6 +57,7 @@ ioat_dev_configure(const struct rte_rawdev *dev,
> rte_rawdev_obj_t config)
> > return -EINVAL;
> >
> > ioat->ring_size = params->ring_size;
> > + ioat->hdls_enable = params->hdls_enable;
> > if (ioat->desc_ring != NULL) {
> > rte_memzone_free(ioat->desc_mz);
> > ioat->desc_ring = NULL;
> > diff --git a/drivers/raw/ioat/rte_ioat_rawdev.h
> > b/drivers/raw/ioat/rte_ioat_rawdev.h
> > index f765a6557..daca04dd3 100644
> > --- a/drivers/raw/ioat/rte_ioat_rawdev.h
> > +++ b/drivers/raw/ioat/rte_ioat_rawdev.h
> > @@ -35,6 +35,7 @@
> > */
> > struct rte_ioat_rawdev_config {
> > unsigned short ring_size;
> > + bool hdls_enable;
> > };
> >
> You need a doxygen comment on the new structure member (and add to
> existing one). While it's fairly clear what ring_size parameter should do, the
> hdls_enable one needs a proper explanation.
>
> I also think you might want to investigate changing it to "hdls_disable"
> so that the default zero-value is the current behaviour. Requiring it to be
> set
> as 1 means that existing code will likely recompile but fail to work.
> For example, the ioat_rawdev_autotest fails on completion checks now.
