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@xxxxxxxxxxxxxx>
To: Enrico Mioso <mrkiko.rs@xxxxxxxxx>, Bjørn Mork <bjorn@xxxxxxx>
Cc: Kevin Zhu <Mingying.Zhu@xxxxxxxxxxxxxx>,
Eli Britstein <Eli.Britstein@xxxxxxxxxxxxxx>,
Alex Strizhevsky <alexxst@xxxxxxxxx>,
"youtux@xxxxxxxxx" <youtux@xxxxxxxxx>,
"linux-usb@xxxxxxxxxxxxxxx" <linux-usb@xxxxxxxxxxxxxxx>,
"netdev@xxxxxxxxxxxxxxx" <netdev@xxxxxxxxxxxxxxx>
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@xxxxxxxxx]
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@xxxxxxxxx; linux-usb@xxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx
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@xxxxxxx>
To: Kevin Zhu <Mingying.Zhu@xxxxxxxxxxxxxx>
Cc: Enrico Mioso <mrkiko.rs@xxxxxxxxx>,
Eli Britstein <Eli.Britstein@xxxxxxxxxxxxxx>,
Alex Strizhevsky <alexxst@xxxxxxxxx>,
Midge Shaojun Tan <ShaojunMidge.Tan@xxxxxxxxxxxxxx>,
"youtux@xxxxxxxxx" <youtux@xxxxxxxxx>,
"linux-usb@xxxxxxxxxxxxxxx" <linux-usb@xxxxxxxxxxxxxxx>,
"netdev@xxxxxxxxxxxxxxx" <netdev@xxxxxxxxxxxxxxx>
Subject: Re: Is this 32-bit NCM?y
Kevin Zhu <Mingying.Zhu@xxxxxxxxxxxxxx> 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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