-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
On Friday 07 September 2012 11:55:53 Ming Lei wrote:
On Fri, Sep 7, 2012 at 1:56 AM, Oliver Neukum oneu...@suse.de wrote:
On Friday 07 September 2012 00:09:13 Ming Lei wrote:
On Thu, Sep 6, 2012 at 4:30 PM, Bjørn Mork bj...@mork.no wrote:
Ming Lei tom.leim...@gmail.com writes:
Looks
On Thursday 06 September 2012 10:17:46 Bjørn Mork wrote:
Not really related, but I am still worrying how MBIM is going to fit
into the usbnet model where you have a strict relation between one
netdev and one USB interface. Do you see any way usbnet could be
extended to manage a list of
On Friday 07 September 2012 14:01:23 Alexey ORISHKO wrote:
The experience from early implementations and prototyping of NCM was that
using NCM with 4-8kB NTB increased max throughput in loop-mode by a factor
of 5-6 even 8-10 times compared to using ECM. One real-world example was
modem for
-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.
Oliver Neukum oneu...@suse.de writes:
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.
It seems to me that this can be fixed introducing a method for bundling,
which tells
Ming Lei tom.leim...@gmail.com writes:
On Thu, Sep 6, 2012 at 4:12 AM, Oliver Neukum oneu...@suse.de wrote:
Hi,
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.
The
On Thursday 06 September 2012 10:13:01 Alexey ORISHKO wrote:
-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
On Thu, 2012-09-06 at 10:50 +0200, Oliver Neukum wrote:
On Thursday 06 September 2012 10:13:01 Alexey ORISHKO wrote:
Rx path:
4. IP packets are cloned to separate skb and length of actual data
set to eth packet size, while skb size is still the same as skb
containing full NTB frame. This
On Thu, 2012-09-06 at 11:11 +0200, Eric Dumazet wrote:
Really skb_clone() use should be removed from cdc_ncm_rx_fixup()
Unless you expect 10Gbit speed from this driver, skb_clone() is the
worst possible strategy.
Allocating fresh skbs of the right size permits better memory use and
On Thu, Sep 6, 2012 at 4:30 PM, Bjørn Mork bj...@mork.no wrote:
Ming Lei tom.leim...@gmail.com writes:
On Thu, Sep 6, 2012 at 4:12 AM, Oliver Neukum oneu...@suse.de wrote:
Hi,
looking at cdc-ncm it seeems to me that cdc-ncm is forced to play
very dirty games because usbnet doesn't have a
On Friday 07 September 2012 00:09:13 Ming Lei wrote:
On Thu, Sep 6, 2012 at 4:30 PM, Bjørn Mork bj...@mork.no wrote:
Ming Lei tom.leim...@gmail.com writes:
Looks the introduced .tx_bundle is not necessary since .tx_fixup is OK.
The minidriver does not have any information about tx in
On Fri, Sep 7, 2012 at 1:56 AM, Oliver Neukum oneu...@suse.de wrote:
On Friday 07 September 2012 00:09:13 Ming Lei wrote:
On Thu, Sep 6, 2012 at 4:30 PM, Bjørn Mork bj...@mork.no wrote:
Ming Lei tom.leim...@gmail.com writes:
Looks the introduced .tx_bundle is not necessary since .tx_fixup
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