MS basic connect extensions: 0d3a or 9d3a?

[Ben Chan]

On Mon, Sep 10, 2018 at 12:05 PM Aleksander Morgado
<aleksander at aleksander.es> wrote:
>
> >> On Mon, Sep 10, 2018 at 5:36 PM, Ben Chan <benchan at chromium.org> wrote:
> >> > Looks like the UUID for basic connect extension is pretty messed up.  It
> >> > isn't listed in http://compliance.usb.org/mbim/.  I'm not sure what to
> >> > expect. majority wins?   Worst case, we will need to carry a quirk in
> >> > libmbim to treat them interchangeable, sigh :(
> >> >
> >> > Service UUID = 3d01dcc5-fef5-4d05-9d3a-bef7058e9aaf
> >> > https://docs.microsoft.com/en-us/windows-hardware/drivers/network/mb-modem-reset-operations
> >> > https://docs.microsoft.com/en-us/windows-hardware/drivers/network/mb-protocol-configuration-operations--pco-
> >> >
> >> > Service UUID = 3d01dcc5-fef5-4d05-0d3a-bef7058e9aaf
> >> > https://docs.microsoft.com/en-us/windows-hardware/drivers/network/mb-multi-sim-operations
> >> > https://docs.microsoft.com/en-us/windows-hardware/drivers/network/mb-network-blacklist-operations
> >> > https://docs.microsoft.com/en-us/windows-hardware/drivers/network/mb-base-stations-information-query-support
> >> > https://docs.microsoft.com/en-us/windows-hardware/drivers/network/mb-provisioned-context-operations
> >> > https://docs.microsoft.com/en-us/windows-hardware/drivers/network/mb-lte-attach-operations:
> >> >
> >>
> >> We need to support both then. The Qualcomm-based DW5821e uses 0d3a,
> >> the Intel based L850-GL uses 9d3a... I'll update libmbim to
> >> transparently decide which one to use the first time a command of that
> >> service is requested.
> >
> > I'm following up on L850-GL, which we made the request to add the
> > MBIM_CID_PCO support. It may be possible to address that in the
> > firmware.
> >
> > libmbim could also do an initial device_services_list query to check
> > which UUID is defined (or, in the worst case, both are defined for
> > different CIDs), and then transparently select the UUID based on the
> > CID.
> >
>
> That is what I was going to do, yes. I don't think we have seen both
> cases at the same time, right?

I can't say for sure as I don't have a modem that supports more than
one CID under the Basic Connectivity Extensions service.

>
>
> --
> Aleksander
> https://aleksander.es