On Wed, 27 Jan 2021 18:01:17 +0100 Loic Poulain wrote:
> MBIM has initially been specified by USB-IF for transporting data (IP)
> between a modem and a host over USB. However some modern modems also
> support MBIM over PCIe (via MHI). In the same way as QMAP(rmnet), it
> allows to aggregate IP packets and to perform context multiplexing.
> 
> This change adds minimal MBIM support to MHI, allowing to support MBIM
> only modems. MBIM being based on USB NCM, it reuses some helpers from
> the USB stack, but the cdc-mbim driver is too USB coupled to be reused.
> 
> At some point it would be interesting to move on a factorized solution,
> having a generic MBIM network lib or dedicated MBIM netlink virtual
> interface support.
> 
> This code has been highly inspired from the mhi_mbim downstream driver
> (Carl Yin <carl....@quectel.com>).
> 
> Signed-off-by: Loic Poulain <loic.poul...@linaro.org>

Does the existing MBIM over USB NCM also show up as a netdev?

Let's CC Dan and Bjorn on MBIM-related code, they may have opinions.

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