Hi Pablo,
The Chained mbufs feature in doc/guides/compressdevs/features/default.ini needs
updating with this change.
Also while you're updating it I think we wanted to rename By-Pass? To Pass-thru?
Fiona
> -----Original Message-----
> From: De Lara Guarch, Pablo
> Sent: Wednesday, June 27, 2018 1:16 PM
> To: Trahe, Fiona <fiona.tr...@intel.com>; ashish.gu...@caviumnetworks.com;
> Daly, Lee
> <lee.d...@intel.com>
> Cc: dev@dpdk.org; De Lara Guarch, Pablo <pablo.de.lara.gua...@intel.com>
> Subject: [PATCH v2 1/2] compressdev: replace mbuf scatter gather flag
>
> 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_OUT_OF_PLACE_SGL_IN_SGL_OUT
> - RTE_COMP_FF_OUT_OF_PLACE_SGL_IN_FB_OUT
> - RTE_COMP_FF_OUT_OF_PLACE_FB_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>
> ---
>
> Changes in v2:
> - Fixed typos
> - Rephrased comments
>
> doc/guides/rel_notes/release_18_08.rst | 6 ++++++
> lib/librte_compressdev/rte_comp.c | 8 ++++++--
> lib/librte_compressdev/rte_comp.h | 30 ++++++++++++++++++++----------
> 3 files changed, 32 insertions(+), 12 deletions(-)
>
> diff --git a/doc/guides/rel_notes/release_18_08.rst
> b/doc/guides/rel_notes/release_18_08.rst
> index bc0124295..18c8b4bd1 100644
> --- a/doc/guides/rel_notes/release_18_08.rst
> +++ b/doc/guides/rel_notes/release_18_08.rst
> @@ -60,6 +60,12 @@ API Changes
> Also, make sure to start the actual text at the margin.
> =========================================================
>
> +* compressdev: Feature flag ``RTE_COMP_FF_MBUF_SCATTER_GATHER`` is
> + replaced with the following more explicit flags:
> + - ``RTE_COMP_FF_OUT_OF_PLACE_SGL_IN_SGL_OUT``
> + - ``RTE_COMP_FF_OUT_OF_PLACE_SGL_IN_FB_OUT``
> + - ``RTE_COMP_FF_OUT_OF_PLACE_FB_IN_SGL_OUT``
> +
>
> ABI Changes
> -----------
> diff --git a/lib/librte_compressdev/rte_comp.c
> b/lib/librte_compressdev/rte_comp.c
> index d596ba872..ea7692ae7 100644
> --- a/lib/librte_compressdev/rte_comp.c
> +++ b/lib/librte_compressdev/rte_comp.c
> @@ -14,8 +14,12 @@ rte_comp_get_feature_name(uint64_t flag)
> return "STATEFUL_COMPRESSION";
> case RTE_COMP_FF_STATEFUL_DECOMPRESSION:
> return "STATEFUL_DECOMPRESSION";
> - case RTE_COMP_FF_MBUF_SCATTER_GATHER:
> - return "MBUF_SCATTER_GATHER";
> + case RTE_COMP_FF_OUT_OF_PLACE_SGL_IN_SGL_OUT:
> + return "OUT_OF_PLACE_SGL_IN_SGL_OUT";
> + case RTE_COMP_FF_OUT_OF_PLACE_SGL_IN_FB_OUT:
> + return "OUT_OF_PLACE_SGL_IN_FB_OUT";
> + case RTE_COMP_FF_OUT_OF_PLACE_FB_IN_SGL_OUT:
> + return "OUT_OF_PLACE_FB_IN_SGL_OUT";
> case RTE_COMP_FF_MULTI_PKT_CHECKSUM:
> return "MULTI_PKT_CHECKSUM";
> case RTE_COMP_FF_ADLER32_CHECKSUM:
> diff --git a/lib/librte_compressdev/rte_comp.h
> b/lib/librte_compressdev/rte_comp.h
> index 5b513c77e..f3742dafb 100644
> --- a/lib/librte_compressdev/rte_comp.h
> +++ b/lib/librte_compressdev/rte_comp.h
> @@ -30,23 +30,33 @@ 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_OUT_OF_PLACE_SGL_IN_SGL_OUT (1ULL << 2)
> +/**< Out-of-place Scatter-gather (SGL) mbufs are
> + * supported in input and output
> + */
> +#define RTE_COMP_FF_OUT_OF_PLACE_SGL_IN_FB_OUT (1ULL << 3)
> +/**< Out-of-place Scatter-gather (SGL) mbufs are supported
> + * in input, combined with flat buffers (FB) in output
> + */
> +#define RTE_COMP_FF_OUT_OF_PLACE_FB_IN_SGL_OUT (1ULL << 4)
> +/**< Out-of-place Scatter-gather (SGL) mbufs are supported
> + * in output, combined with flat buffers (FB) in input
> + */
> +#define RTE_COMP_FF_ADLER32_CHECKSUM (1ULL << 5)
> /**< Adler-32 Checksum is supported */
> -#define RTE_COMP_FF_CRC32_CHECKSUM (1ULL << 4)
> +#define RTE_COMP_FF_CRC32_CHECKSUM (1ULL << 6)
> /**< CRC32 Checksum is supported */
> -#define RTE_COMP_FF_CRC32_ADLER32_CHECKSUM (1ULL << 5)
> +#define RTE_COMP_FF_CRC32_ADLER32_CHECKSUM (1ULL << 7)
> /**< Adler-32/CRC32 Checksum is supported */
> -#define RTE_COMP_FF_MULTI_PKT_CHECKSUM (1ULL << 6)
> +#define RTE_COMP_FF_MULTI_PKT_CHECKSUM (1ULL << 8)
> /**< Generation of checksum across multiple stateless packets is supported */
> -#define RTE_COMP_FF_SHA1_HASH (1ULL << 7)
> +#define RTE_COMP_FF_SHA1_HASH (1ULL << 9)
> /**< SHA1 Hash is supported */
> -#define RTE_COMP_FF_SHA2_SHA256_HASH (1ULL << 8)
> +#define RTE_COMP_FF_SHA2_SHA256_HASH (1ULL << 10)
> /**< SHA256 Hash of SHA2 family is supported */
> -#define RTE_COMP_FF_NONCOMPRESSED_BLOCKS (1ULL << 9)
> +#define RTE_COMP_FF_NONCOMPRESSED_BLOCKS (1ULL << 11)
> /**< Creation of non-compressed blocks using RTE_COMP_LEVEL_NONE is
> supported */
> -#define RTE_COMP_FF_SHAREABLE_PRIV_XFORM (1ULL << 10)
> +#define RTE_COMP_FF_SHAREABLE_PRIV_XFORM (1ULL << 12)
> /**< Private xforms created by the PMD can be shared
> * across multiple stateless operations. If not set, then app needs
> * to create as many priv_xforms as it expects to have stateless
> --
> 2.14.4
