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Date: Fri, 13 Feb 2015 11:34:45 +0800 From: yzhu1 <Yanjun.Zhu@...driver.com> To: Fan Du <fengyuleidian0615@...il.com> CC: Stephen Hemminger <stephen@...workplumber.org>, <netdev@...r.kernel.org>, <mst@...hat.com>, <jasowang@...hat.com>, <viro@...iv.linux.org.uk>, <davem@...emloft.net> Subject: Re: [PATCH 1/1] tun: change speed from 10M to dynamically configured On 02/13/2015 11:25 AM, Fan Du wrote: > 于 2015年02月13日 10:45, yzhu1 写道: >> On 02/12/2015 08:55 PM, Stephen Hemminger wrote: >>> On Thu, 12 Feb 2015 13:35:23 +0800 >>> Zhu Yanjun <Yanjun.Zhu@...driver.com> wrote: >>> >>>> From: Zhu Yanjun <yanjun.zhu@...driver.com> >>>> >>>> The default speed of normal nic is 1000M while the default speed >>>> of tun is 10M. Now the default speed of tun is changed to 1000M. >>>> And there are 3 options: 10M, 100M and 1000M to the speed of tun. >>>> The command "ethtool -s tun0 speed 10/100/1000" can configure the >>>> speed of tun dynamically. >>>> >>>> CC: Michael S. Tsirkin <mst@...hat.com> >>>> CC: Jason Wang <jasowang@...hat.com> >>>> CC: Al Viro <viro@...iv.linux.org.uk> >>>> Signed-off-by: Zhu Yanjun <yanjun.zhu@...driver.com> >>>> Signed-off-by: Zhu Yanjun <Yanjun.Zhu@...driver.com> >>> Why limit to 10/100/1000 speed? >>> Ethtool speed can be any value >> Thanks for your comments. >> >> Yes. But the real physical nic speed often 10M, 100M and 1000M. >> This simulates the physical nic. > ^^^^^^^^^^^^^^^ > then a speed control logical would be needed to effect the > corresponding speed > when tun/tap gets/puts packets corresponding to the speed setting. > > What's the benefit when changing speed from 10Mb/s to 1000Mb/s? > > Just xia bibi ;) :-P Thanks for your reply. This speed is just for user space application. There is no any speed control logic here.:-( Zhu Yanjun > > > > -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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