With the vast amounts of data being transported around networks and stored in 
storage systems, reducing data size is becoming ever more important.

There are both software libraries and hardware devices available that provide 
compression, but no common API.
Such an API is proposed in this patchset, which supports the following features:

- Deflate Algorithm (https://tools.ietf.org/html/rfc1951)
- LZS algorithm (https://tools.ietf.org/html/rfc2395)
- Static and Dynamic Huffman encoding.
- Compression levels
- Checksum generation
- Asynchronous burst API
- private_xform - a place for PMDs to hold private data derived from
  a xform and used by stateless operations.
- stream - a place for PMDs to hold private data derived from
  a xform and also maintain state and history data. For
  stateful flows.

Signed-off-by: Fiona Trahe <fiona.tr...@intel.com>
Signed-off-by: Pablo de Lara pablo.de.lara.gua...@intel.com
Signed-off-by: Shally Verma <shally.ve...@caviumnetworks.com>
Signed-off-by: Ashish Gupta <ashish.gu...@caviumnetworks.com>

Changes in v5:
 - Make rte_compressdev_is_valid_dev, rte_compressdev_pmd_get_dev
   functions internal
 - Add rte_comp.h to API doc
 - Remove unused rte_comp_op_get_user_data,
   rte_comp_op_get_user_data_size functions
 - Fix comment
 - Move private data size arg out of PMD init params structure
 - Split out of space error status into two
 - Make rte_comp_op_alloc, rte_comp_op_bulk_alloc, rte_comp_free,
   rte_compressdev_enqueue_burst and rte_compressdev_dequeue_burst
   functions not inline.
 - Move rte_compressdev and rte_compressdev_data structures out of
   rte_compressdev.h, making them internal to the API
 - Remove unneeded driver registration (used in cryptodev, for multi PMD
 - Remove unneeded includes
 - rte_comp_op_bulk_alloc returns now 0 on success, instead of the
   number of allocated operations
 - Move internals macros to rte_compressdev_internals.h, to avoid
   exposing them unnecessarily

Changes in v4:
 - Fix build (missing ";")
 - Change order in common_base, so compression is placed after security

Changes in v3:
 - Remove rte_comp_op_ctod helper functions
 - Remove param_range_check macro
 - Rename from phys_addr to iova_addr
 - Remove rte_comp_algo_strings
 - Rename rte_compressdev_pmd_is_valid_dev to rte_compressdev_is_valid_dev
 - Remove feature flags from compressdev
 - Support hash operations
 - Add shareable priv xform in feature flags, instead of returnin it
   on xform creation
 - Allow max number of queue pairs to be 0, meaning that there is no
 - Add invalid configuration checks
 - Add capability helper functions

Changes in v2:
 - Add stream APIs
 - Remove session
 - Add SHAREABLE / NON_SHAREABLE private_xform types
 - Add algo enum 'UNSPECIFIED' to fix warning in capabilities
 - Change one remaining log to use dynamic logging.
 - Add rte_cache_aligned keyword to op
 - Rename enums with better names _ALGO, __CHECKSUM, _HUFFMAN_
 - Use const keyword when passing xform
 - Remove qp_count fn from dev_ops as never used
 - Remove max_nb_queue-pairs from compressdev_init_param as never used
 - Clarify device configure and start sequence
   and clarified usage. 
 - Add stream and private_xform sizes to device config for use in
   mempool creation
 - Add capability helper fn
 - Use Base2 log value for window size on xforms
 - Add Meson build
 - Update Map file
 - Change order in doxy file
 - Update Release note 

Fiona Trahe (12):
  compressdev: add basic device management
  compressdev: add queue pair management
  compressdev: add compression specific data
  compressdev: add enqueue/dequeue functions
  compressdev: add operation management
  compressdev: support stateless operations
  compressdev: support stateful operations
  compressdev: add device feature flags
  compressdev: add compression service feature flags
  compressdev: add device stats
  compressdev: add device capabilities
  compressdev: get device id from name

Shally Verma (1):
  compressdev: support hash operations

 MAINTAINERS                                        |   7 +
 config/common_base                                 |   6 +
 config/rte_config.h                                |   3 +
 doc/api/doxy-api-index.md                          |   2 +
 doc/api/doxy-api.conf                              |   1 +
 doc/guides/rel_notes/release_18_05.rst             |   6 +
 lib/Makefile                                       |   3 +
 lib/librte_compressdev/Makefile                    |  31 +
 lib/librte_compressdev/meson.build                 |  12 +
 lib/librte_compressdev/rte_comp.c                  | 207 ++++++
 lib/librte_compressdev/rte_comp.h                  | 464 +++++++++++++
 lib/librte_compressdev/rte_compressdev.c           | 734 +++++++++++++++++++++
 lib/librte_compressdev/rte_compressdev.h           | 536 +++++++++++++++
 lib/librte_compressdev/rte_compressdev_internal.h  | 123 ++++
 lib/librte_compressdev/rte_compressdev_pmd.c       | 160 +++++
 lib/librte_compressdev/rte_compressdev_pmd.h       | 390 +++++++++++
 lib/librte_compressdev/rte_compressdev_version.map |  42 ++
 lib/meson.build                                    |   2 +-
 mk/rte.app.mk                                      |   1 +
 19 files changed, 2729 insertions(+), 1 deletion(-)
 create mode 100644 lib/librte_compressdev/Makefile
 create mode 100644 lib/librte_compressdev/meson.build
 create mode 100644 lib/librte_compressdev/rte_comp.c
 create mode 100644 lib/librte_compressdev/rte_comp.h
 create mode 100644 lib/librte_compressdev/rte_compressdev.c
 create mode 100644 lib/librte_compressdev/rte_compressdev.h
 create mode 100644 lib/librte_compressdev/rte_compressdev_internal.h
 create mode 100644 lib/librte_compressdev/rte_compressdev_pmd.c
 create mode 100644 lib/librte_compressdev/rte_compressdev_pmd.h
 create mode 100644 lib/librte_compressdev/rte_compressdev_version.map


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