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Message-ID: <50FFE3A9.5070003@redhat.com> Date: Wed, 23 Jan 2013 21:20:41 +0800 From: Jason Wang <jasowang@...hat.com> To: "Michael S. Tsirkin" <mst@...hat.com> CC: netdev@...r.kernel.org Subject: Re: tun mq failure On 01/23/2013 09:18 PM, Michael S. Tsirkin wrote: > On Wed, Jan 23, 2013 at 08:08:07PM +0800, Jason Wang wrote: >> On 01/23/2013 07:06 PM, Hannes Frederic Sowa wrote: >>> On Wed, Jan 23, 2013 at 12:05:16PM +0200, Michael S. Tsirkin wrote: >>>> This is when trying to start a VPN using some old openvpn binary so MQ >>>> is not set. >>>> >>>> So >>>> 1. I think we should limit allocation of MQ to when MQ flag is set in SETIFF. >>>> 2. order 7 allocation is 2^^7 pages - about half a megabyte of contigious >>>> memory. This is quite likely to fail. >>>> Let's start with a small limit on number of queues, like 8? >>>> Then we know it will succeed. >>>> Longer term we might want to solve it differently. >>> This has been come up before: >>> http://thread.gmane.org/gmane.linux.network/255647/focus=255902 >>> >>> I think a solution to this problem is still outstanding. >>> >> I draft a patch in the reply of in that thread, but didn't get feedback >> from reporter. > Yes it's essentialy same. > So can you please submit an official patch with proper > subject commit log and signature? Ok, will post the patch soon. -- 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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