netdev - Re: [PATCH net-next v9 2/4] ethtool: provide customized dim profile management

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Date: Wed, 24 Apr 2024 08:52:49 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Heng Qi <hengqi@...ux.alibaba.com>
Cc: netdev@...r.kernel.org, virtualization@...ts.linux.dev, "David S .
 Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Paolo
 Abeni <pabeni@...hat.com>, Jason Wang <jasowang@...hat.com>, "Michael S .
 Tsirkin" <mst@...hat.com>, Brett Creeley <bcreeley@....com>, Ratheesh
 Kannoth <rkannoth@...vell.com>, Alexander Lobakin
 <aleksander.lobakin@...el.com>, Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, Tal
 Gilboa <talgi@...dia.com>, Jonathan Corbet <corbet@....net>,
 linux-doc@...r.kernel.org, Maxime Chevallier
 <maxime.chevallier@...tlin.com>, Jiri Pirko <jiri@...nulli.us>, Paul
 Greenwalt <paul.greenwalt@...el.com>, Ahmed Zaki <ahmed.zaki@...el.com>,
 Vladimir Oltean <vladimir.oltean@....com>, Kory Maincent
 <kory.maincent@...tlin.com>, Andrew Lunn <andrew@...n.ch>,
 "justinstitt@...gle.com" <justinstitt@...gle.com>
Subject: Re: [PATCH net-next v9 2/4] ethtool: provide customized dim profile
 management

On Wed, 24 Apr 2024 21:10:55 +0800 Heng Qi wrote:
> >> This doesn't work because the first level of sub-nesting of
> >> ETHTOOL_A_COALESCE_RX_CQE_PROFILE is ETHTOOL_A_PROFILE_IRQ_MODERATION.  
> > So declare a policy for IRQ_MODERATION which has one entry -> nested
> > profile policy?  
> 
> Still doesn't work because one profile corresponds to 5 IRQ_MODERATION sub-nests.

I don't get it. Can you show the code you used and the failure / error
you get?

> In the same example, strset also uses NLA_NESTED.

Likely just because it's older code.