H Bjørn,
-Original Message-
From: Bjørn Mork [mailto:bj...@mork.no]
Sent: Tuesday, January 22, 2013 10:54 AM
If you add ZLP for NTBs of dwNtbOutMaxSize, you are heavily affecting
CPU load, increasing interrupt load by factor of 2 in high load
traffic scenario and possibly
-Original Message-
From: Bjørn Mork [mailto:bj...@mork.no]
We normally avoid sending ZLPs by padding NTBs with a zero byte if the
NTB is shorter than dwNtbOutMaxSize, resulting in a short USB packet
instead of a ZLP. But in the case where the NTB length is exactly
dwNtbOutMaxSize
-Original Message-
From: Oliver Neukum [mailto:oneu...@suse.de]
On Monday 21 January 2013 15:47:13 Bjørn Mork wrote:
But I wonder if this isn't really a generic problem in usbnet. The
FLAG_MULTI_PACKET test here seems completely bogus:
if (length % dev-maxpacket == 0) {
-Original Message-
From: David Miller [mailto:da...@davemloft.net]
Sent: Monday, January 21, 2013 8:23 PM
To: bj...@mork.no
Cc: net...@vger.kernel.org; linux-usb@vger.kernel.org;
gsua...@smithmicro.com; Alexey ORISHKO; oneu...@suse.de
Subject: Re: [PATCH net 0/3] cdc_ncm
On Mon, Jan 21, 2013 at 9:16 PM, Bjørn Mork bj...@mork.no wrote:
Alexey ORISHKO alexey.oris...@stericsson.com wrote:
There are still a couple of questions I am wondering about though. The most
important one: what is Windows 8 doing different from us? Does anyone know? I
do not have
On Fri, Jan 18, 2013 at 10:17 PM, Bjørn Mork bj...@mork.no wrote:
Some Sierra Wireless firmwares support CDC MBIM but have no CDC
Union funtional descriptor. This violates the MBIM specification,
I don't believe Sierra Wireless violates MBIM specification.
See in the specification: there are
Hi,
On Tue, Jan 8, 2013 at 2:14 PM, Wei Shuai cpuw...@gmail.com wrote:
Hi Alexey,
Recently I met a Modem which cannot do ARP. But I found our
cdc_ncm_bind() function cannot handle this special case. Do you have any
plan to handle it?
static int cdc_ncm_bind(struct usbnet *dev,
On Fri, Oct 19, 2012 at 11:30 AM, Bjørn Mork bj...@mork.no wrote:
Bjørn Mork bj...@mork.no writes:
Alexey Orishko alexey.oris...@gmail.com writes:
OK, I did some more experiments, and I am wondering if the real firmware
problem is in the MBIM descriptor. It is
CDC MBIM
On Fri, Oct 19, 2012 at 2:18 PM, Bjørn Mork bj...@mork.no wrote:
OK, I may have misunderstood you here. Quoting the errata text:
quote
If bit D5 is set in the bmNetworkCapabilities field of function’s NCM
Functional Descriptor, the host may set wLength either to 4 or to
8. If wLength
On Fri, Oct 19, 2012 at 12:09 AM, Bjørn Mork bj...@mork.no wrote:
Oliver Neukum oli...@neukum.org writes:
On Thursday 18 October 2012 22:40:55 Bjørn Mork wrote:
If the device refuses our updated value, then we must be prepared
to receive URBs as big as the device wants to send. Set rx_max
to
-Original Message-
From: Oliver Neukum [mailto:oneu...@suse.de]
here is the patch that does everything I consider theoretically
necessary to have bundling of frames in usbnet and adapting cdc-ncm to
it.
I'd appreciate any review in case I am doing something stupid.
I had a
-Original Message-
From: Oliver Neukum [mailto:oneu...@suse.de]
Sent: Friday, September 21, 2012 10:35 AM
To: Alexey ORISHKO; bj...@mork.no; net...@vger.kernel.org; linux-
u...@vger.kernel.org
Subject: removing the timer from cdc-ncm
Hi,
here is the patch that does everything I
-Original Message-
From: Oliver Neukum [mailto:oli...@neukum.org]
Sent: Friday, September 07, 2012 8:23 PM
There is a temptation to send full NTBs even with a single IP packet,
But it will lead to wasted USB bandwidth and reduced ability to send
real data for other functions in
-Original Message-
From: Ming Lei [mailto:tom.leim...@gmail.com]
Sent: Friday, September 07, 2012 2:58 PM
Several issues need to be improved:
Tx path:
1. IP packets must be accumulated in one NTB. Currently it's done via
data copy.
Preferred way would be a possibility to have
-Original Message-
From: Oliver Neukum [mailto:oneu...@suse.de]
Sent: Friday, September 07, 2012 3:09 PM
Until we do something with network device framework in order to get
access to upper layer Tx queue we need to utilize timer.
Could you explain your reasoning? From what you
-Original Message-
From: Oliver Neukum [mailto:oneu...@suse.de]
looking at cdc-ncm it seeems to me that cdc-ncm is forced to play very
dirty games because usbnet doesn't have a notion about aggregating
packets for a single transfer.
Several issues need to be improved:
Tx path:
1.
On Thu, Sep 6, 2012 at 2:35 PM, Frank Hoffmann
frank.hoffm...@thesycon.de wrote:
I'm not sure if it is also required to initialize the wNtbInMaxDatagrams
field because 0 (no limit) is a valid value.
It is not required. The limit was removed in one of the patches earlier.
/alexey
--
To
On Tue, Sep 4, 2012 at 3:45 PM, Bjørn Mork bj...@mork.no wrote:
Yes. But this time with some hope of multi-vendor support, given that
Microsoft points to it for Windows 8 Mobile Broadband device support:
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