Re: [dpdk-dev] [PATCH 0/2] net/mlx5: add reclaim memory mode devarg

[Raslan Darawsheh <rasland@mellanox.com>]

Hi,
> -----Original Message-----
> From: Suanming Mou <suanmingm@mellanox.com>
> Sent: Monday, June 1, 2020 9:10 AM
> To: Slava Ovsiienko <viacheslavo@mellanox.com>; Matan Azrad
> <matan@mellanox.com>
> Cc: Raslan Darawsheh <rasland@mellanox.com>; dev@dpdk.org
> Subject: [PATCH 0/2] net/mlx5: add reclaim memory mode devarg
> 
> Currently, when flow destroyed, some memory resources may still be kept
> as cached to help next time create flow more efficiently.
> 
> Some system may need the resources to be more flexible with flow create
> and destroy.  After peak time, with millions of flows destroyed, the
> system would prefer the resources to be reclaimed completely, no cache
> is needed. Then the resources can be allocated and used by other
> components. The system is not so sensitive about the flow insertion
> rate, but more care about the resources.
> 
> Both DPDK mlx5 PMD driver and the low level component rdma-core have
> provided the flow resources to be configured cached or not, but there is
> no APIs or parameters exposed to user to configure the flow resources
> cache mode. In this case, introduce a new PMD devarg to let user
> configure the flow resources cache mode will be helpful.
> 
> This commit is to add a new "reclaim_mem_mode" to help user configure if
> the destroyed flows' cache resources should be kept or not.
> 
> Their will be three mode can be chosen:
> 1. 0(none). It means the flow resources will be cached as usual. The
> resources will be cached, helpful with flow insertion rate.
> 2. 1(light). It will only enable the DPDK PMD level resources reclaim.
> 3. 2(aggressive). Both DPDK PMD level and rdma-core low level will be
> configured as reclaimed mode.
> 
> With these three mode, user can configure the resources cache mode with
> different levels.
> 
> Suanming Mou (2):
>   common/mlx5: add memory reclaim glue function
>   net/mlx5: add reclaim memory mode devarg
> 
>  doc/guides/nics/mlx5.rst               | 20 ++++++++++++++++++++
>  doc/guides/rel_notes/release_20_08.rst |  6 ++++++
>  drivers/common/mlx5/Makefile           |  5 +++++
>  drivers/common/mlx5/meson.build        |  2 ++
>  drivers/common/mlx5/mlx5_glue.c        | 13 +++++++++++++
>  drivers/common/mlx5/mlx5_glue.h        |  1 +
>  drivers/net/mlx5/mlx5.c                | 24 +++++++++++++++++++++++-
>  drivers/net/mlx5/mlx5.h                | 13 +++++++++++++
>  8 files changed, 83 insertions(+), 1 deletion(-)
> 
> --
> 1.8.3.1

Series rebased and applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh