netdev - Re: Is this 32-bit NCM?y

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Message-ID: <alpine.LNX.2.03.1412041124250.9684@gmail.com>
Date:	Thu, 4 Dec 2014 11:24:59 +0100 (CET)
From:	Enrico Mioso <mrkiko.rs@...il.com>
To:	Midge Shaojun Tan <ShaojunMidge.Tan@...iocodes.com>
cc:	Bjørn Mork <bjorn@...k.no>,
	Kevin Zhu <Mingying.Zhu@...iocodes.com>,
	Eli Britstein <Eli.Britstein@...iocodes.com>,
	Alex Strizhevsky <alexxst@...il.com>,
	"youtux@...il.com" <youtux@...il.com>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: Is this 32-bit NCM?y

Congratulations!
Your modification to the driver work; the disable of padding itself alone did not.
With the modified file version I am able to use the device with no problems.
Congratulations guys.



On Thu, 4 Dec 2014, Midge Shaojun  Tan wrote:

> Date: Thu, 4 Dec 2014 11:10:16
> From: Midge Shaojun  Tan <ShaojunMidge.Tan@...iocodes.com>
> To: Enrico Mioso <mrkiko.rs@...il.com>, Bjørn Mork <bjorn@...k.no>
> Cc: Kevin Zhu <Mingying.Zhu@...iocodes.com>,
>     Eli Britstein <Eli.Britstein@...iocodes.com>,
>     Alex Strizhevsky <alexxst@...il.com>,
>     "youtux@...il.com" <youtux@...il.com>,
>     "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
>     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
> Subject: Re: Is this 32-bit NCM?y
> 
> Hi all,
>
> I test OK with kervel 3.16.4
> Need disable other Ethernet network, just like eth1. (Then the DNS and route is OK)
> And also need disable arp, (ifconfig wwan0 -arp up), because China UNICOM don't respond the ARP message.
> With new mode switch string: /etc/usb_modeswitch.d/12d1:14fe
> Please see the patch and check whether it is correct?
>
>
> -----邮件原件-----
> 发件人: Enrico Mioso [mailto:mrkiko.rs@...il.com]
> 发送时间: 2014年12月4日 17:54
> 收件人: Bjørn Mork
> 抄送: Kevin Zhu; Eli Britstein; Alex Strizhevsky; Midge Shaojun Tan; youtux@...il.com; linux-usb@...r.kernel.org; netdev@...r.kernel.org
> 主题: Re: Is this 32-bit NCM?y
>
> Guys!
> Don't forget I can test it - since I have a remote machine with 3.16 kernel and the device, at least for now.
> So - Bjorn: do I need just to disable padding or do I need also to perform some other changes? I am sorry if I ask this a little bit stupidly, but I was alittle bit busy here.
>
>
>
>
>
> On Thu, 4 Dec 2014, Bjørn Mork wrote:
>
>> Date: Thu, 4 Dec 2014 10:19:11
>> From: Bjørn Mork <bjorn@...k.no>
>> To: Kevin Zhu <Mingying.Zhu@...iocodes.com>
>> Cc: Enrico Mioso <mrkiko.rs@...il.com>,
>>     Eli Britstein <Eli.Britstein@...iocodes.com>,
>>     Alex Strizhevsky <alexxst@...il.com>,
>>     Midge Shaojun Tan <ShaojunMidge.Tan@...iocodes.com>,
>>     "youtux@...il.com" <youtux@...il.com>,
>>     "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
>>     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
>> Subject: Re: Is this 32-bit NCM?y
>>
>> Kevin Zhu <Mingying.Zhu@...iocodes.com> writes:
>>
>>> Guys,
>>>
>>> After rearranging the padding, putting NCM0 right after NTH, and
>>> disable ARP (FLAG_NOARP) and handling the offset alignment issue, it
>>> seems it begins to work, though there's still problem with DHCP.
>>
>> Great!  But it would be good to know if _one_ of these changes is
>> enough to make it work.
>>
>>> The DHCP packet's size becomes a large one after the TX function,
>>> which is 16384, the maximum.
>>
>> You can now (from v3.16) disable the padding by setting min_tx_pkt >= tx_max.
>> Something like this should do for a simple test:
>>
>> echo 16384 >/sys/class/net/wwan0/cdc_ncm/min_tx_pkt
>>
>>
>> Bjørn
>>
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