linux-kernel - Re: [net-next v1] net: wwan: t7xx: Parameterize data plane RX BAT and FAG count

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Message-ID: <20250515180858.2568d930@kernel.org>
Date: Thu, 15 May 2025 18:08:58 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Jinjian Song <jinjian.song@...ocom.com>
Cc: chandrashekar.devegowda@...el.com, chiranjeevi.rapolu@...ux.intel.com,
 haijun.liu@...iatek.com, m.chetan.kumar@...ux.intel.com,
 ricardo.martinez@...ux.intel.com, loic.poulain@...aro.org,
 ryazanov.s.a@...il.com, johannes@...solutions.net, davem@...emloft.net,
 edumazet@...gle.com, pabeni@...hat.com, linux-kernel@...r.kernel.org,
 netdev@...r.kernel.org, linux-doc@...r.kernel.org,
 angelogioacchino.delregno@...labora.com,
 linux-arm-kernel@...ts.infradead.org, matthias.bgg@...il.com,
 corbet@....net, linux-mediatek@...ts.infradead.org, helgaas@...nel.org,
 danielwinkler@...gle.com, korneld@...gle.com, andrew+netdev@...n.ch,
 horms@...nel.org, rafael.wang@...ocom.com
Subject: Re: [net-next v1] net: wwan: t7xx: Parameterize data plane RX BAT
 and FAG count

On Wed, 14 May 2025 18:47:28 +0800 Jinjian Song wrote:
> The DMA buffer for data plane RX is currently fixed, being parameterized
> to allow configuration.

Module parameters are discouraged, they are pretty poor as an API since
they apply to all devices in the system. Can you describe what "frg"
and "bat" are ? One of the existing APIs likely covers them.
Please also describe the scope (are they per netdev or some sort of
device level params)?
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