[PATCH v7 0/4] ethdev: add RTE_FLOW_ITEM_TYPE_COMPARE

[Suanming Mou <suanmingm@nvidia.com>]

The new item type is added for the case user wants to match traffic
based on packet field compare result with other fields or immediate
value.

e.g. take advantage the compare item user will be able to accumulate
a IPv4/TCP packet's TCP data_offset and IPv4 IHL field to a tag
register, then compare the tag register with IPv4 header total length
to understand the packet has payload or not.

The supported operations can be as below:
 - RTE_FLOW_ITEM_COMPARE_EQ (equal)
 - RTE_FLOW_ITEM_COMPARE_NE (not equal)
 - RTE_FLOW_ITEM_COMPARE_LT (less than)
 - RTE_FLOW_ITEM_COMPARE_LE (less than or equal)
 - RTE_FLOW_ITEM_COMPARE_GT (great than)
 - RTE_FLOW_ITEM_COMPARE_GE (great than or equal)

V7:
 - Moved release notes to API.
 - Optimize comment descriptions.

V6:
 - fix typo and style issue.
 - adjust flow_field description.

V5:
 - rebase on top of next-net
 - add sample detail for rte_flow_field.

V4:
 - rebase on top of the latest version.
 - move ACTION_MODIFY_PATTERN_SIZE and modify_field_ids rename
   to first patch.
 - add comparison flow create sample in testpmd_funcs.rst.

V3:
 - fix code style missing empty line in rte_flow.rst.
 - fix missing the ABI change release notes.

V2:
 - Since modify field data struct is experiment, rename modify
   field data directly instead of adding new flow field struct.


Suanming Mou (4):
  ethdev: rename action modify field data structure
  ethdev: move flow field data structures
  ethdev: add compare item
  net/mlx5: add compare item support

 app/test-pmd/cmdline_flow.c                 | 416 +++++++++++++++++++-
 doc/guides/nics/features/default.ini        |   1 +
 doc/guides/nics/features/mlx5.ini           |   1 +
 doc/guides/nics/mlx5.rst                    |   7 +
 doc/guides/prog_guide/rte_flow.rst          |   9 +-
 doc/guides/rel_notes/release_24_03.rst      |  10 +
 doc/guides/testpmd_app_ug/testpmd_funcs.rst |  24 ++
 drivers/net/mlx5/mlx5_flow.c                |   4 +-
 drivers/net/mlx5/mlx5_flow.h                |   9 +-
 drivers/net/mlx5/mlx5_flow_dv.c             |  10 +-
 drivers/net/mlx5/mlx5_flow_hw.c             |  73 ++++
 lib/ethdev/rte_flow.c                       |   1 +
 lib/ethdev/rte_flow.h                       | 330 +++++++++-------
 13 files changed, 726 insertions(+), 169 deletions(-)

-- 
2.34.1