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SubjectRe: [PATCH v2 00/17] net: introduce Qualcomm IPA driver
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On Wed, 2019-06-19 at 12:47 -0600, Subash Abhinov Kasiviswanathan
wrote:
> > > There is a n:1 relationship between rmnet and IPA.
> > > rmnet does the de-muxing to multiple netdevs based on the mux id
> > > in the MAP header for RX packets and vice versa.
> >
> > Oh, so you mean that even though IPA supports multiple channels
> > and multiple netdev instances for a physical device, all the
> > rmnet devices end up being thrown into a single channel in IPA?
> >
> > What are the other channels for in IPA? I understand that there
> > is one channel for commands that is separate, while the others
> > are for network devices, but that seems to make no sense if
> > we only use a single channel for rmnet data.
> >
>
> AFAIK, the other channels are for use cases like tethering.
> There is only a single channel which is used for RX
> data which is then de-muxed using rmnet.

That seems odd, since tethering is no different than any other data
channel in QMI, just that it may have a different APN and QoS
guarantees.

Dan

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