> -----Original Message-----
> From: Verma, Shally [mailto:shally.ve...@cavium.com]
> Sent: Saturday, July 7, 2018 7:34 AM
> To: De Lara Guarch, Pablo <pablo.de.lara.gua...@intel.com>; Gupta, Ashish
> <ashish.gu...@cavium.com>; Trahe, Fiona <fiona.tr...@intel.com>; Daly, Lee
> <lee.d...@intel.com>
> Cc: dev@dpdk.org
> Subject: RE: [PATCH v5 3/4] compressdev: replace mbuf scatter gather flag
>
>
>
> >-----Original Message-----
> >From: Pablo de Lara [mailto:pablo.de.lara.gua...@intel.com]
> >Sent: 06 July 2018 10:58
> >To: Verma, Shally <shally.ve...@cavium.com>; Gupta, Ashish
> ><ashish.gu...@cavium.com>; fiona.tr...@intel.com; lee.d...@intel.com
> >Cc: dev@dpdk.org; Pablo de Lara <pablo.de.lara.gua...@intel.com>
> >Subject: [PATCH v5 3/4] compressdev: replace mbuf scatter gather flag
> >
> >External Email
> >
> >The current mbuf scatter gather feature flag is too ambiguous, as it is
> >not clear if input and/or output buffers can be scatter gather mbufs or
> >not.
> >
> >Therefore, three new flags will replace this flag:
> >- RTE_COMP_FF_OOP_SGL_IN_SGL_OUT
> >- RTE_COMP_FF_OOP_SGL_IN_FB_OUT
> >- RTE_COMP_FF_OOP_LB_IN_SGL_OUT
> >
> >Note that out-of-place flat buffers is supported by default and
> >in-place is not supported by the library.
> >
> >Signed-off-by: Pablo de Lara <pablo.de.lara.gua...@intel.com>
> >Acked-by: Fiona Trahe <fiona.tr...@intel.com>
> >---
> >
> >v5:
> >- Replaced left "Flat Buffer" with "Linear Buffer" (Shally)
> >- Rephrased comment about new feature flags (Shally)
> >
> >v4:
> >- Replaced FB (Flat Buffers) with LB (Linear Buffers) (Shally)
> >- Add extra explanation on comments about Linear Buffers vs
> > Scatter-gather lists
> >
> >v3:
> >- Replaced Out-of-place with OOP
> >- Added new feature flags in default.ini
> >
> >v2:
> >- Fixed typos
> >- Rephrased comments
> >
> > doc/guides/compressdevs/features/default.ini | 34 +++++++++++++++----------
> ---
> > doc/guides/compressdevs/overview.rst | 14 ++++++++++++
> > doc/guides/rel_notes/release_18_08.rst | 6 +++++
> > lib/librte_compressdev/rte_comp.c | 8 +++++--
> > lib/librte_compressdev/rte_comp.h | 31 +++++++++++++++++--------
> > 5 files changed, 65 insertions(+), 28 deletions(-)
> >
> ...
>
> >diff --git a/doc/guides/compressdevs/overview.rst
> >b/doc/guides/compressdevs/overview.rst
> >index d01c1a966..70bbe82b7 100644
> >--- a/doc/guides/compressdevs/overview.rst
> >+++ b/doc/guides/compressdevs/overview.rst
> >@@ -16,3 +16,17 @@ Supported Feature Flags
> > - "Pass-through" feature flag refers to the ability of the PMD
> > to let input buffers pass-through it, copying the input to the output,
> > without making any modifications to it (no compression done).
> >+
> >+ - "OOP SGL In SGL Out" feature flag stands for
> >+ "Out-of-place Scatter-gather list Input, Scatter-gater list Output",
> >+ which means PMD supports different scatter-gather styled input and
> >output
> buffers
> >+ (i.e. both can consists of multiple segments).
> >+
> >+ - "OOP SGL In LB Out" feature flag stands for
> >+ "Out-of-place Scatter-gather list Input, Linear Buffers Output",
> >+ which means PMD supports input from scatter-gathered styled buffers,
> outputting linear buffers
> >+ (i.e. single segment).
> >+
> >+ - "OOP LB In SGL Out" feature flag stands for
> >+ "Out-of-place Linear Buffers Input, Scatter-gather list Output",
> >+ which means PMD supports input from linear buffer, outputting scatter-
> gathered styled buffers.
>
> ....
>
> >diff --git a/lib/librte_compressdev/rte_comp.h
> >b/lib/librte_compressdev/rte_comp.h
> >index 5b513c77e..274b5eadf 100644
> >--- a/lib/librte_compressdev/rte_comp.h
> >+++ b/lib/librte_compressdev/rte_comp.h
> >@@ -30,23 +30,34 @@ extern "C" {
> > /**< Stateful compression is supported */
> > #define RTE_COMP_FF_STATEFUL_DECOMPRESSION (1ULL << 1)
> > /**< Stateful decompression is supported */
> >-#define RTE_COMP_FF_MBUF_SCATTER_GATHER (1ULL << 2)
> >-/**< Scatter-gather mbufs are supported */
> >-#define RTE_COMP_FF_ADLER32_CHECKSUM (1ULL << 3)
> >+#define RTE_COMP_FF_OOP_SGL_IN_SGL_OUT (1ULL << 2)
> >+/**< Out-of-place Scatter-gather (SGL) buffers,
> >+ * with multiple segments, are supported in input and output */
> >+#define RTE_COMP_FF_OOP_SGL_IN_LB_OUT (1ULL << 3)
> >+/**< Out-of-place Scatter-gather (SGL) buffers are supported
> >+ * in input, combined with linear buffers (LB), with a
> >+ * single segment, in output
> >+ */
> >+#define RTE_COMP_FF_OOP_LB_IN_SGL_OUT (1ULL << 4)
> >+/**< Out-of-place Scatter-gather (SGL) mbufs are supported
> >+ * in output, combined with linear buffers (LB) in input */
> [Shally] Similar rephrase here please.
Ok, I am replacing "mbufs" with "buffers". I won't clarify what SGL and LB
means,
as it is done in the previous macros.
I will make this change on the fly as I am applying this patch, as it is the
last comment,
I believe.
Thanks,
Pablo
>
> Rest,
> Acked-by: Shally Verma <shally.ve...@caviumnetworks.com>
