[00/10] ethdev: datapath-focused flow rules management

Message ID 20220118050221.3914960-1-akozyrev@nvidia.com (mailing list archive)


Alexander Kozyrev Jan. 18, 2022, 5:02 a.m. UTC
  Three major changes to a generic RTE Flow API were implemented in order
to speed up flow rule insertion/destruction and adapt the API to the
needs of a datapath-focused flow rules management applications:

1. Pre-configuration hints.
Application may give us some hints on what type of resources are needed.
Introduce the configuration routine to prepare all the needed resources
inside a PMD/HW before any flow rules are created at the init stage.

2. Flow grouping using templates.
Use the knowledge about which flow rules are to be used in an application
and prepare item and action templates for them in advance. Group flow rules
with common patterns and actions together for better resource management.

3. Queue-based flow management.
Perform flow rule insertion/destruction asynchronously to spare the datapath
from blocking on RTE Flow API and allow it to continue with packet processing.
Enqueue flow rules operations and poll for the results later.

testpmd examples are part of the patch series. PMD changes will follow.

RFC: https://patchwork.dpdk.org/project/dpdk/cover/20211006044835.3936226-1-akozyrev@nvidia.com/

Signed-off-by: Alexander Kozyrev <akozyrev@nvidia.com>

Alexander Kozyrev (10):
  ethdev: introduce flow pre-configuration hints
  ethdev: add flow item/action templates
  ethdev: bring in async queue-based flow rules operations
  app/testpmd: implement rte flow configure
  app/testpmd: implement rte flow item/action template
  app/testpmd: implement rte flow table
  app/testpmd: implement rte flow queue create flow
  app/testpmd: implement rte flow queue drain
  app/testpmd: implement rte flow queue dequeue
  app/testpmd: implement rte flow queue indirect action

 app/test-pmd/cmdline_flow.c                   | 1484 ++++++++++++++++-
 app/test-pmd/config.c                         |  731 ++++++++
 app/test-pmd/testpmd.h                        |   61 +
 doc/guides/prog_guide/img/rte_flow_q_init.svg |   71 +
 .../prog_guide/img/rte_flow_q_usage.svg       |   60 +
 doc/guides/prog_guide/rte_flow.rst            |  319 ++++
 doc/guides/rel_notes/release_22_03.rst        |   19 +
 doc/guides/testpmd_app_ug/testpmd_funcs.rst   |  350 +++-
 lib/ethdev/rte_flow.c                         |  332 ++++
 lib/ethdev/rte_flow.h                         |  680 ++++++++
 lib/ethdev/rte_flow_driver.h                  |  103 ++
 lib/ethdev/version.map                        |   16 +
 12 files changed, 4203 insertions(+), 23 deletions(-)
 create mode 100644 doc/guides/prog_guide/img/rte_flow_q_init.svg
 create mode 100644 doc/guides/prog_guide/img/rte_flow_q_usage.svg