Point to Point interface over qmi_wwan device

[Bjørn Mork]

Dan Williams <dcbw at redhat.com> writes:
> On Tue, 2016-10-04 at 22:49 +0200, Reinhard Speyerer wrote:
>
>> that matches the results from my tests with a MC7304. For MSM9x15
>> based devices like the MC7304 the use of DHCP seems to be a trigger
>> to
>> pass IPv4 traffic over the network interface as long as it is set to
>> Ethernet mode. Only using a qmi_wwan version with raw IP support and
>> switching the mobile use raw IP with qmicli made this configuration
>> work for me without using a DHCP client.
>
> Yeah, that was going to be my next suggestion.  Use rawip mode:
>
> qmicli -d /dev/cdc-wdm0 --wda-set-data-format=raw-ip
> qmicli -d /dev/cdc-wdm0 --set-expected-data-format=raw-ip
>
> or, if your device is older and doesn't have the QMI WDA service:
>
> qmicli -d /dev/cdc-wdm0 --device-open-net="net-raw-ip|net-no-qos-header" --dms-get-ids
> qmicli -d /dev/cdc-wdm0 --set-expected-data-format=raw-ip
>
> At least, I think those are the right commands.  I'm sure Bjorn will
> correct me...

Like I would remember anything :)

Anyway, the DHCP required for ethernet mode really makes a lot of
sense. They are probably using the DHCP transaction to configure MAC
addresses. DHCP and ethernet mode are both there to support "legacy
operation" anyway.


Bjørn