Re: [dpdk-dev] [PATCH v2] net/mlx5: support Flow Tag and Packet Header miniCQEs

[Raslan Darawsheh <rasland@nvidia.com>]

Hi,

> -----Original Message-----
> From: Alexander Kozyrev <akozyrev@nvidia.com>
> Sent: Sunday, November 1, 2020 6:15 PM
> To: dev@dpdk.org
> Cc: Raslan Darawsheh <rasland@nvidia.com>; Slava Ovsiienko
> <viacheslavo@nvidia.com>; Matan Azrad <matan@nvidia.com>
> Subject: [PATCH v2] net/mlx5: support Flow Tag and Packet Header miniCQEs
> 
> CQE compression allows us to save the PCI bandwidth and improve
> the performance by compressing several CQEs together to a miniCQE.
> But the miniCQE size is only 8 bytes and this limits the ability
> to successfully keep the compression session in case of various
> traffic patterns.
> 
> The current miniCQE format only keeps the compression session alive
> in case of uniform traffic with the Hash RSS as the only difference.
> There are requests to keep the compression session in case of tagged
> traffic by RTE Flow Mark Id and mixed UDP/TCP and IPv4/IPv6 traffic.
> Add 2 new miniCQE formats in order to achieve the best performance
> for these traffic patterns: Flow Tag and Packet Header miniCQEs.
> 
> The existing rxq_cqe_comp_en devarg is modified to specify the
> desired miniCQE format. Specifying 2 selects Flow Tag format
> for better compression rate in case of RTE Flow Mark traffic.
> Specifying 3 selects Checksum format (existing format for MPRQ).
> Specifying 4 selects L3/L4 Header format for better compression
> rate in case of mixed TCP/UDP and IPv4/IPv6 traffic.
> 
> Signed-off-by: Alexander Kozyrev <akozyrev@nvidia.com>
> ---
> v1:
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatc
> hwork.dpdk.org%2Fpatch%2F82500%2F&amp;data=04%7C01%7Crasland%40
> nvidia.com%7C396c0aafa96b4d3bd57808d87e813f93%7C43083d15727340c1b7
> db39efd9ccc17a%7C0%7C0%7C637398440875666226%7CUnknown%7CTWFpb
> GZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI
> 6Mn0%3D%7C1000&amp;sdata=DuD7YpUNTqLAqTrcRVaGSm%2F4F6gtWK1I
> q8Zh6lcvwtA%3D&amp;reserved=0
>     added ARM and PowerPC support, reworked x86 code
> ---
>  doc/guides/nics/mlx5.rst                 |   8 +
>  doc/guides/rel_notes/release_20_11.rst   |   2 +
>  drivers/common/mlx5/mlx5_devx_cmds.c     |   7 +-
>  drivers/common/mlx5/mlx5_devx_cmds.h     |   1 +
>  drivers/common/mlx5/mlx5_prm.h           |  27 ++-
>  drivers/net/mlx5/mlx5.c                  |   7 +
>  drivers/net/mlx5/mlx5.h                  |   1 +
>  drivers/net/mlx5/mlx5_devx.c             |  44 +++--
>  drivers/net/mlx5/mlx5_rxtx.c             | 151 +++++++++------
>  drivers/net/mlx5/mlx5_rxtx.h             |   2 +
>  drivers/net/mlx5/mlx5_rxtx_vec_altivec.h | 223
> ++++++++++++++++++++++-
>  drivers/net/mlx5/mlx5_rxtx_vec_neon.h    | 141 +++++++++++++-
>  drivers/net/mlx5/mlx5_rxtx_vec_sse.h     | 167 ++++++++++++++---
>  13 files changed, 675 insertions(+), 106 deletions(-)
> 

Patch applied to next-net-mlx,

Kindest regards,
Raslan Darawsheh