[v15,0/5] Add PIE support for HQoS library

  DPDK sched library is equipped with mechanism that secures it from the bufferbloat problem
which is a situation when excess buffers in the network cause high latency and latency
variation. Currently, it supports RED for active queue management. However, more
advanced queue management is required to address this problem and provide desirable
quality of service to users.

This solution (RFC) proposes usage of new algorithm called "PIE" (Proportional Integral
controller Enhanced) that can effectively and directly control queuing latency to address
the bufferbloat problem.

The implementation of mentioned functionality includes modification of existing and
adding a new set of data structures to the library, adding PIE related APIs.
This affects structures in public API/ABI. That is why deprecation notice is going
to be prepared and sent.

Liguzinski, WojciechX (5):
  sched: add PIE based congestion management
  example/qos_sched: add PIE support
  example/ip_pipeline: add PIE support
  doc/guides/prog_guide: added PIE
  app/test: add tests for PIE

 app/test/meson.build                         |    4 +
 app/test/test_pie.c                          | 1065 ++++++++++++++++++
 config/rte_config.h                          |    1 -
 doc/guides/prog_guide/glossary.rst           |    3 +
 doc/guides/prog_guide/qos_framework.rst      |   60 +-
 doc/guides/prog_guide/traffic_management.rst |   13 +-
 drivers/net/softnic/rte_eth_softnic_tm.c     |    6 +-
 examples/ip_pipeline/tmgr.c                  |  142 +--
 examples/qos_sched/app_thread.c              |    1 -
 examples/qos_sched/cfg_file.c                |  127 ++-
 examples/qos_sched/cfg_file.h                |    5 +
 examples/qos_sched/init.c                    |   27 +-
 examples/qos_sched/main.h                    |    3 +
 examples/qos_sched/profile.cfg               |  196 ++--
 lib/sched/meson.build                        |   10 +-
 lib/sched/rte_pie.c                          |   86 ++
 lib/sched/rte_pie.h                          |  398 +++++++
 lib/sched/rte_sched.c                        |  241 ++--
 lib/sched/rte_sched.h                        |   63 +-
 lib/sched/version.map                        |    4 +
 20 files changed, 2171 insertions(+), 284 deletions(-)
 create mode 100644 app/test/test_pie.c
 create mode 100644 lib/sched/rte_pie.c
 create mode 100644 lib/sched/rte_pie.h
  

> -----Original Message-----
> From: Liguzinski, WojciechX <wojciechx.liguzinski@intel.com>
> Sent: Tuesday, October 19, 2021 9:19 AM
> To: dev@dpdk.org; Singh, Jasvinder <jasvinder.singh@intel.com>;
> Dumitrescu, Cristian <cristian.dumitrescu@intel.com>
> Cc: Ajmera, Megha <megha.ajmera@intel.com>
> Subject: [PATCH v15 0/5] Add PIE support for HQoS library
> 
> DPDK sched library is equipped with mechanism that secures it from the
> bufferbloat problem
> which is a situation when excess buffers in the network cause high latency
> and latency
> variation. Currently, it supports RED for active queue management.
> However, more
> advanced queue management is required to address this problem and
> provide desirable
> quality of service to users.
> 
> This solution (RFC) proposes usage of new algorithm called "PIE"
> (Proportional Integral
> controller Enhanced) that can effectively and directly control queuing latency
> to address
> the bufferbloat problem.
> 
> The implementation of mentioned functionality includes modification of
> existing and
> adding a new set of data structures to the library, adding PIE related APIs.
> This affects structures in public API/ABI. That is why deprecation notice is
> going
> to be prepared and sent.
> 
> Liguzinski, WojciechX (5):
>   sched: add PIE based congestion management
>   example/qos_sched: add PIE support
>   example/ip_pipeline: add PIE support
>   doc/guides/prog_guide: added PIE
>   app/test: add tests for PIE
> 
>  app/test/meson.build                         |    4 +
>  app/test/test_pie.c                          | 1065 ++++++++++++++++++
>  config/rte_config.h                          |    1 -
>  doc/guides/prog_guide/glossary.rst           |    3 +
>  doc/guides/prog_guide/qos_framework.rst      |   60 +-
>  doc/guides/prog_guide/traffic_management.rst |   13 +-
>  drivers/net/softnic/rte_eth_softnic_tm.c     |    6 +-
>  examples/ip_pipeline/tmgr.c                  |  142 +--
>  examples/qos_sched/app_thread.c              |    1 -
>  examples/qos_sched/cfg_file.c                |  127 ++-
>  examples/qos_sched/cfg_file.h                |    5 +
>  examples/qos_sched/init.c                    |   27 +-
>  examples/qos_sched/main.h                    |    3 +
>  examples/qos_sched/profile.cfg               |  196 ++--
>  lib/sched/meson.build                        |   10 +-
>  lib/sched/rte_pie.c                          |   86 ++
>  lib/sched/rte_pie.h                          |  398 +++++++
>  lib/sched/rte_sched.c                        |  241 ++--
>  lib/sched/rte_sched.h                        |   63 +-
>  lib/sched/version.map                        |    4 +
>  20 files changed, 2171 insertions(+), 284 deletions(-)
>  create mode 100644 app/test/test_pie.c
>  create mode 100644 lib/sched/rte_pie.c
>  create mode 100644 lib/sched/rte_pie.h
> 
> --
> 2.25.1

Series-acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>