netdev - Re: RMNET QMAP data aggregation with size greater than 16384

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Date:   Fri, 13 Aug 2021 00:21:21 -0600
From:   subashab@...eaurora.org
To:     Daniele Palmas <dnlplm@...il.com>,
        Bjørn Mork <bjorn@...k.no>
Cc:     Aleksander Morgado <aleksander@...ksander.es>,
        Network Development <netdev@...r.kernel.org>,
        Sean Tranchetti <stranche@...eaurora.org>
Subject: Re: RMNET QMAP data aggregation with size greater than 16384

> Just an heads-up that when I proposed that urb size there were doubts
> about the value (see
> https://patchwork.ozlabs.org/project/netdev/patch/20200909091302.20992-1-dnlplm@gmail.com/#2523774
> and
> https://patchwork.ozlabs.org/project/netdev/patch/20200909091302.20992-1-dnlplm@gmail.com/#2523958):
> it is true that this time you are setting the size just when qmap is
> enabled, but I think that Carl's comment about low-cat chipsets could
> still apply.
> 
> Thanks,
> Daniele
> 

Thanks for bringing this up.

Looks like a tunable would be needed to satisfy all users.
Perhaps we can use 32k as default in mux and passthrough mode but allow 
for changes
there if needed through a sysfs.

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