Messages in this thread | | | Subject | RE: [git patches] net driver updates | Date | Wed, 20 Feb 2008 21:57:08 -0800 | From | "Divy Le Ray" <> |
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> -----Original Message----- > From: David Miller [mailto:davem@davemloft.net] > Sent: Wednesday, February 20, 2008 9:47 PM > To: krkumar2@in.ibm.com > Cc: Divy Le Ray; jeff@garzik.org; linux-kernel@vger.kernel.org; > netdev@vger.kernel.org > Subject: Re: [git patches] net driver updates > > From: Krishna Kumar2 <krkumar2@in.ibm.com> > Date: Thu, 21 Feb 2008 09:13:49 +0530 > > > Hi Divy, > > > > > > Explain why, so I can include it in the changelog please... > > > > > > Hi Jeff, > > > > > > The first part of the patch removes the !netif_queue_stopped(dev). > > > It opens the race discussed a while ago between Stephen hemminger > and > > > David Miller: > > > http://marc.info/?l=linux-netdev&m=113383224512427&w=2 > > > > I feel this race cannot happen anymore. I think the fix for that race > was > > to introduce the > > __LINK_STATE_QDISC_RUNNING bit thus eliminating any races between > CPU's. If > > one > > CPU has called xmit, the other CPU will enqueue skbs (by holding the > > queue_lock) and > > exit from qdisc_run since it finds the bit set already. > > And the race is talking about LLTX, which S2IO doesn't use as > far as I can tell.
Dave,
The driver is cxgb3 here, it uses LLTX.
Cheers, Divy
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