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Date:	Fri, 23 May 2014 11:33:46 +0200
From:	Bjørn Mork <bjorn@...k.no>
To:	Jim Baxter <jim_baxter@...tor.com>
Cc:	David Miller <davem@...emloft.net>, <eric.dumazet@...il.com>,
	<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<netdev@...r.kernel.org>, <kamal@...onical.com>,
	<edumazet@...gle.com>, <mszeredi@...e.cz>, <fw@...len.de>
Subject: Re: skbuff truesize incorrect.

Jim Baxter <jim_baxter@...tor.com> writes:

>> I'll create and test a patch for the cdc_ncm host driver unless someone
>> else wants to do that. I haven't really played with the gadget driver
>> before, so I'd prefer if someone knowing it (Jim maybe?) could take care
>> of it.  If not, then I can always make an attempt using dummy_hcd to
>> test it.
> I can create a patch for the host driver, I will issue the gadget patch
> first to resolve any issues, the fix would be similar.

Well, I couldn't help myself.  I just had to test it.  The attached
patch works for me, briefly tested with an Ericsson H5321gw NCM device.
I have no ideas about the performance impact as that modem is limited to
21 Mbps HSDPA.


Bjørn


View attachment "0001-net-cdc_ncm-reduce-skb-truesize-in-rx-path.patch" of type "text/x-diff" (1402 bytes)

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