HLD for ECN and WRED statistics support in SONiC

[rpmarvell]

This document describes the high-level design of

• ECN-marked queue statistics
• WRED-drop port statistics
• WRED-drop queue statistics

Code PR details :

Repo	PR title	State
sonic-swss-common	WRED and ECN stats flexcounter macros and lua script updates for stats capability query	Merged
sonic-sairedis	Statistics capability query is implemented in sairedis and syncd	Approved, Yet to be merged
sonic-swss	WRED and ECN statistics implementation	Approved, yet to be merged
sonic-buildimage	Added new flex counter groups in yang file	Merged
sonic-utilities	CLI support for WRED and ECN statistics feature	Approved, yet to be merged

[zhangyanzhao]

Please update the Command Reference document for your new CLI and update/define YANG model for the updated Config_DB

[zhangyanzhao]

This is reviewed in sonic community and recording is https://zoom.us/rec/share/ftw0da4bBQdfjGpKWj0KpRUS-Jn0FZiiUCD2Ia3oxByheb02XoJfvsKTgYIbDrRP.MaLAuB2VyRHtcHap

[liat-grozovik]

@stephenxs could you please help to review?
IMO sonic design should take into consideration that SAI will not support part of it and thus it should be used by stat capabilities.
also, need to ensure that the out put of the CLIs is aligned with the fact that some capabilities are not available and what should be the cli output for it

[msosyak]

Please update the description with implementation PR references according to pull-request-process

[rpmarvell]

@neethajohn : Could you please help merge this HLD

[zhangyanzhao]

@rpmarvell there are open comments to be addressed in the code PRs, can you please help to check and address? Thanks.

[zhangyanzhao]

approved by Nvidia and merge

[Yuval-Mellanox]

@rpmarvell What is holding merging the code prs?

[rpmarvell]

@rpmarvell What is holding merging the code prs?

Sonic-sairedis review comments are being addressed. It will be merged as soon as the testing is done for the same.

[zhangyanzhao]

Marvell has no time to work on this feature before 5/30.

[zhangyanzhao]

HLD is merged, code PRs have open comments, move to backlog

[zhangyanzhao]

code PRs are not merged, move to backlog