> -----Original Message-----
> From: Alexander Kozyrev <akozy...@nvidia.com>
> Sent: Sunday, November 1, 2020 18:28
> To: dev@dpdk.org
> Cc: Raslan Darawsheh <rasl...@nvidia.com>; Slava Ovsiienko
> <viachesl...@nvidia.com>; Matan Azrad <ma...@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 <akozy...@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viachesl...@nvidia.com>
