MC7430 Connection problem

[Erik Kazandjian]

Hi,

I managed to set an ip address on my interface and pass data once. 
However this was a lucky shot as I can not reproduce it.

This is what I have done.

I rebooted the pi

ifconfig  wwan0  down
echo Y > /sys/class/net/wwan0/qmi/raw_ip
ifconfig  wwan0  up

The strange thing that I noticed here is that my wwan0 interface no 
longer has a hw address ?

wwan0     Link encap:UNSPEC  HWaddr 
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
           UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500 Metric:1
           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
           TX packets:54 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:1000
           RX bytes:0 (0.0 B)  TX bytes:11670 (11.3 KiB)

wwan1     Link encap:Ethernet  HWaddr 86:10:a5:53:2a:0a
           inet addr:169.254.80.97  Bcast:169.254.255.255 Mask:255.255.0.0
           inet6 addr: fe80::5d36:cbca:3f4f:c40f/64 Scope:Link
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
           TX packets:56 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:1000
           RX bytes:0 (0.0 B)  TX bytes:12074 (11.7 KiB)

I set modem in standby, this causes the modem to dettach (as it 
automatically attaches when it comes up)

qmicli -d /dev/cdc-wdm0 --dms-set-operating-mode=low-power

Then I bring it online again

qmicli -d /dev/cdc-wdm0 --dms-set-operating-mode=online

This command causes the modem to attach again. So then I stop the network

qmicli -d /dev/cdc-wdm0  --wds-stop-network=disable-autoconnect

Network cancelled... releasing resources
[/dev/cdc-wdm0] Network stopped

When I than try to setup the network mannually (not usin gqmi-network) I 
get the following message

qmicli -d /dev/cdc-wdm0 --wds-start-network=apn='internet',ip-type=4 
--client-no-release-cid

error: couldn't start network: QMI protocol error (26): 'NoEffect'
[/dev/cdc-wdm0] Client ID not released:
     Service: 'wds'
         CID: '42'

Which makes the following call fail.

qmicli -d /dev/cdc-wdm0  --wds-get-current-settings
error: couldn't get current settings: QMI protocol error (15): 'OutOfCall'


Using the same set of commands I managed to get it working once. So I'm 
still not clear how I can reproduce the successfull case

Thanks for any help

Erik






On 10/02/2017 10:45 PM, Bjørn Mork wrote:
> Aleksander Morgado <aleksander at aleksander.es> writes:
>
>> Ah, true... then no idea why it didn't allow updating that... first
>> time I've seen this.
>>
>> Erik, can you manually run this?
>> $ sudo -s
>> # echo Y > /sys/class/net/wwan0/qmi/raw_ip
> The driver will refuse to change mode if the netdev is running.  I.e. if
> the interface is up.  It should log an error and the write should return
> -EBUSY in this case.
>
> The driver will also notify other drivers of the upcoming type change,
> allowing them to block it.  This will prevent mode change if you have
> added the wwanX device to a bridge for example (which isn't a good idea
> for a raw ip device).  The sysfs write should still return an
> appropriate error code.
>
>
>
>
> Bjørn