linux-kernel - Re: [net-next PATCH v3] octeontx2-af: Add debugfs support to dump NIX TM topology

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Message-ID: <ac0226c9-c3a4-4cc5-9323-850f79b7718a@intel.com>
Date: Mon, 3 Jun 2024 14:00:45 +0200
From: Wojciech Drewek <wojciech.drewek@...el.com>
To: Anshumali Gaur <agaur@...vell.com>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
CC: Sunil Goutham <sgoutham@...vell.com>, Linu Cherian <lcherian@...vell.com>,
	Geetha sowjanya <gakula@...vell.com>, Jerin Jacob <jerinj@...vell.com>,
	hariprasad <hkelam@...vell.com>, Subbaraya Sundeep <sbhatta@...vell.com>,
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Subject: Re: [net-next PATCH v3] octeontx2-af: Add debugfs support to dump NIX
 TM topology



On 03.06.2024 13:22, Anshumali Gaur wrote:
> This patch adds support to dump NIX transmit queue topology.
> There are multiple levels of scheduling/shaping supported by
> NIX and a packet traverses through multiple levels before sending
> the packet out. At each level, there are set of scheduling/shaping
> rules applied to a packet flow.
> 
> Each packet traverses through multiple levels
> SQ->SMQ->TL4->TL3->TL2->TL1 and these levels are mapped in a parent-child
> relationship.
> 
> This patch dumps the debug information related to all TM Levels in
> the following way.
> 
> Example:
> $ echo <nixlf> > /sys/kernel/debug/octeontx2/nix/tm_tree
> $ cat /sys/kernel/debug/octeontx2/nix/tm_tree
> 
> A more desriptive set of registers at each level can be dumped
> in the following way.
> 
> Example:
> $ echo <nixlf> > /sys/kernel/debug/octeontx2/nix/tm_topo
> $ cat /sys/kernel/debug/octeontx2/nix/tm_topo
> 
> Signed-off-by: Anshumali Gaur <agaur@...vell.com>
> ---

Thx,
Reviewed-by: Wojciech Drewek <wojciech.drewek@...el.com>

> v3:
>     - Addressed review comments given by Wojciech Drewek
> 	1. Removed unnecessary goto statement
> 	2. Moved valid SQ check before AF mbox
> v2:
>     - Addressed review comments given by Simon Horman
> 	1. Resolved indentation issues
> 
>  .../net/ethernet/marvell/octeontx2/af/rvu.h   |   1 +
>  .../marvell/octeontx2/af/rvu_debugfs.c        | 365 ++++++++++++++++++
>  .../ethernet/marvell/octeontx2/af/rvu_reg.h   |   7 +
>  3 files changed, 373 insertions(+)
> 

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