>> Some additional information about this device, forgetting about the APP1
>> port issue...
>>
>> The MC8790 is really a Direct-IP capable device, but without DHCP.
>
> Interesting. Let's try to figure out how to support that. Maybe
> export the raw fwattr and let userspace figure it out instead?
>
>> The
>> sierra_net kernel driver filters the wwan port in the following check:
>>
>> /* test whether firmware supports DHCP */
>> if (!(status == sizeof(fwattr) &&
>> (fwattr & SWI_GET_FW_ATTR_MASK))) {
>> /* found incompatible firmware version */
>> dev_err(&dev->udev->dev, "Incompatible driver and firmware"
>> " versions\n");
>> kfree(priv);
>> return -ENODEV;
>> }
>>
>> If that check is removed, we get a wwan0 which can get connected with
>> AT!SCACT, but DHCP won't work on it. I could get the static IP to set
>> with AT!SCPADDR, though, but I couldn't get proper gateway or DNS
>> addresses. After using the x.x.x.1 address as default route, I could
>> actually ping the Internet...
>
> The sierra_net driver sets IFF_NOARP so you shouldn't really need any
> gateway address at all. Just set the default route out on the correct
> dev:
>
> ip route add default dev wwan0
>
>
AT!SCACT?2
!SCACT: 2,0
OK
AT!SCACT=1,2
+CME ERROR: 0
AT!SCACT=1,2
OK
AT!SCPADDR=2
!SCPADDR: 2,"212.73.52.125"
OK
$> sudo ifconfig wwan0 up
$> sudo ifconfig wwan0 212.73.52.125
$> sudo ip route add default dev wwan0
$> ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=49 time=331 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=49 time=341 ms
...
Seems to work?
--
Aleksander
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