Point to Point interface over qmi_wwan device

[Tang Nguyen]

--------------------------------------------
On Wed, 10/5/16, Bjørn Mork <bjorn at mork.no> wrote:

 Subject: Re: Point to Point interface over qmi_wwan device
 To: "Tang Nguyen" <tang_nguyen at yahoo.com>
 Cc: "Dan Williams" <dcbw at redhat.com>, "Reinhard Speyerer" <rspmn at arcor.de>, "libqmi (development)" <libqmi-devel at lists.freedesktop.org>
 Date: Wednesday, October 5, 2016, 9:26 AM
 
 Tang Nguyen <tang_nguyen at yahoo.com>
 writes:
 
 > I try to use
 --set-expected-data-format=raw-ip command, but I got error
 message of non-existence
 "'/sys/class/net/wwan-6-1.ip/qmi/raw_ip' 
 file.
 > I found Bjon's patch : https://patchwork.ozlabs.org/patch/552408/
 from patchwork regarding about raw-ip support in
 qmi_wwan driver.  
 > Is this patch
 already available in upstream kernel , or it will happen
 soon ? 
 
 >It's in Linux
 >v4.5 and later.
 
 
 >Bjørn

Applying cleanly Bjon's patch to kernel 3.14.68, I can set raw-ip data format, but not able to make a connection. Do i need to apply another patch to get it work.

[05 Oct 2016, 14:06:07] [Debug] [/dev/cdc-wdm0] Opening device with flags 'sync, net-raw-ip, net-no-qos-header'...
[05 Oct 2016, 14:06:07] [Debug] [/dev/cdc-wdm0] Running sync...
[05 Oct 2016, 14:06:07] [Debug] [/dev/cdc-wdm0] Sent message...
<<<<<< RAW:
<<<<<<   length = 12
<<<<<<   data   = 01:0B:00:00:00:00:00:01:27:00:00:00

[05 Oct 2016, 14:06:07] [Debug] [/dev/cdc-wdm0] Sent message (translated)...
<<<<<< QMUX:
<<<<<<   length  = 11
<<<<<<   flags   = 0x00
<<<<<<   service = "ctl"
<<<<<<   client  = 0
<<<<<< QMI:
<<<<<<   flags       = "none"
<<<<<<   transaction = 1
<<<<<<   tlv_length  = 0
<<<<<<   message     = "Sync" (0x0027)

[05 Oct 2016, 14:06:07] [Debug] [/dev/cdc-wdm0] Received message...
>>>>>> RAW:
>>>>>>   length = 19
>>>>>>   data   = 01:12:00:80:00:00:01:01:27:00:07:00:02:04:00:00:00:00:00

[05 Oct 2016, 14:06:07] [Debug] [/dev/cdc-wdm0] Received message (translated)...
>>>>>> QMUX:
>>>>>>   length  = 18
>>>>>>   flags   = 0x80
>>>>>>   service = "ctl"
>>>>>>   client  = 0
>>>>>> QMI:
>>>>>>   flags       = "response"
>>>>>>   transaction = 1
>>>>>>   tlv_length  = 7
>>>>>>   message     = "Sync" (0x0027)
>>>>>> TLV:
>>>>>>   type       = "Result" (0x02)
>>>>>>   length     = 4
>>>>>>   value      = 00:00:00:00
>>>>>>   translated = SUCCESS

[05 Oct 2016, 14:06:07] [Debug] [/dev/cdc-wdm0] Sync operation finished
[05 Oct 2016, 14:06:07] [Debug] [/dev/cdc-wdm0] Setting network port data format...
[05 Oct 2016, 14:06:07] [Debug] [/dev/cdc-wdm0] Sent message...
<<<<<< RAW:
<<<<<<   length = 21
<<<<<<   data   = 01:14:00:00:00:00:00:02:26:00:09:00:10:02:00:02:00:01:01:00:00

[05 Oct 2016, 14:06:07] [Debug] [/dev/cdc-wdm0] Sent message (translated)...
<<<<<< QMUX:
<<<<<<   length  = 20
<<<<<<   flags   = 0x00
<<<<<<   service = "ctl"
<<<<<<   client  = 0
<<<<<< QMI:
<<<<<<   flags       = "none"
<<<<<<   transaction = 2
<<<<<<   tlv_length  = 9
<<<<<<   message     = "Set Data Format" (0x0026)
<<<<<< TLV:
<<<<<<   type       = "Protocol" (0x10)
<<<<<<   length     = 2
<<<<<<   value      = 02:00
<<<<<<   translated = raw-ip
<<<<<< TLV:
<<<<<<   type       = "Format" (0x01)
<<<<<<   length     = 1
<<<<<<   value      = 00
<<<<<<   translated = absent

[05 Oct 2016, 14:06:07] [Debug] [/dev/cdc-wdm0] Received message...
>>>>>> RAW:
>>>>>>   length = 19
>>>>>>   data   = 01:12:00:80:00:00:01:02:26:00:07:00:02:04:00:01:00:46:00

[05 Oct 2016, 14:06:07] [Debug] [/dev/cdc-wdm0] Received message (translated)...
>>>>>> QMUX:
>>>>>>   length  = 18
>>>>>>   flags   = 0x80
>>>>>>   service = "ctl"
>>>>>>   client  = 0
>>>>>> QMI:
>>>>>>   flags       = "response"
>>>>>>   transaction = 2
>>>>>>   tlv_length  = 7
>>>>>>   message     = "Set Data Format" (0x0026)
>>>>>> TLV:
>>>>>>   type       = "Result" (0x02)
>>>>>>   length     = 4
>>>>>>   value      = 01:00:46:00
>>>>>>   translated = FAILURE: InvalidOperation