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

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Date:	Thu, 4 Dec 2014 10:28:27 +0100 (CET)
From:	Enrico Mioso <mrkiko.rs@...il.com>
To:	Kevin Zhu <Mingying.Zhu@...iocodes.com>
cc:	Bjørn Mork <bjorn@...k.no>,
	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

Ok - but... you can upgrade your OS to that without any effort - simply apt-get-installing the required linux-image-3.16 package plus the -extra package. It's nothing more in case.
thank you kevin, thank you Bjorn.

Enrico



On Thu, 4 Dec 2014, Kevin Zhu wrote:

> Date: Thu, 4 Dec 2014 10:26:20
> From: Kevin Zhu <Mingying.Zhu@...iocodes.com>
> To: Bjørn Mork <bjorn@...k.no>
> 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
> 
> I will find it out. And I don't have v3.16 and I'm not going to upgrade
> my OS to that. Sorry. So I would just stick to v3.13. Anyway, that size
> is wrong, it should be fixed.
>
> Regards,
> Kevin
>
> On 12/04/2014 05:19 PM, Bjørn Mork wrote:
>> 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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