netdev - Re: net: usb: cdc_ncm: add support IFF

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Message-ID: <9d3b0a25-0aef-4bf6-b7c9-e00c6ada73cf@email.android.com>
Date:	Tue, 08 Jan 2013 22:27:51 +0000
From:	Bjørn Mork <bjorn@...k.no>
To:	Wei Shuai <cpuwolf@...il.com>,
	"'Greg Kroah-Hartman'" <gregkh@...uxfoundation.org>,
	"'Alexey Orishko'" <alexey.orishko@...ricsson.com>,
	"'Hans Petter Selasky'" <hans.petter.selasky@...ricsson.com>
CC:	linux-usb@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: net: usb: cdc_ncm: add support  IFF_NOARP

Wei Shuai <cpuwolf@...il.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, struct usb_interface *intf)
>{
>	...
> 	/*  cannot do ARP */
> 	dev->net->flags |= IFF_NOARP;
>	...
>}
>
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Are you sure all CDC NCM devices will handle this? Maybe the buggy device need a device specific quirk instead? 


Bjørn
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