On 24/03/2022 09:09, Zhang, Qi Z wrote:
-----Original Message-----
From: Wu, Wenjun1 <wenjun1...@intel.com>
Sent: Monday, February 28, 2022 3:36 PM
To: dev@dpdk.org; Zhang, Qi Z <qi.z.zh...@intel.com>; Yang, Qiming
<qiming.y...@intel.com>
Cc: Van Haaren, Harry <harry.van.haa...@intel.com>; Su, Simei
<simei...@intel.com>; Wu, Wenjun1 <wenjun1...@intel.com>
Subject: [PATCH v4] net/ice: improve performance of RX timestamp offload
Previously, each time a burst of packets is received, SW reads HW register
and assembles it and the timestamp from descriptor together to get the
complete 64 bits timestamp.
This patch optimizes the algorithm. The SW only needs to check the
monotonicity of the low 32bits timestamp to avoid crossing borders.
Each time before SW receives a burst of packets, it should check the time
difference between current time and last update time to avoid the low 32
bits timestamp cycling twice.
Signed-off-by: Wenjun Wu <wenjun1...@intel.com>
Added cc stable
Hi Qi. The DPDK documentation has guidance about what should be
backported to LTS [0] and distinguishes between fixes and performance
improvements. Please try and stick with this when applying patches or
let LTS maintainers know if there is a debatable case.
thanks,
Kevin.
[0]
http://doc.dpdk.org/guides-21.11/contributing/stable.html#what-changes-should-be-backported
Acked-by: Qi Zhang <qi.z.zh...@intel.com>
Applied to dpdk-next-net-intel.
Thanks
Qi
