[dpdk-dev] [PATCH] vhost: don't stall if guest is slow

[Yuanhan Liu]

On Tue, Dec 08, 2015 at 03:30:43AM +0100, Thomas Monjalon wrote:
> 2015-12-08 10:23, Yuanhan Liu:
> > On Mon, Dec 07, 2015 at 04:50:21PM -0800, Stephen Hemminger wrote:
> > > When guest is booting (or any othertime guest is busy) it is possible
> > > for the small receive ring (256) to get full. If this happens the
> > > vhost library should just return normally. It's current behavior
> > > of logging just creates massive log spew/overflow which could even
> > > act as a DoS attack against host.
> > > 
> > > Reported-by: Nathan Law <nlaw at brocade.com>
> > > Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
> > 
> > Acked-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>
> 
> Yuanhan, please what is your opinion about the balance benefit/risk
> of this patch for 2.2?

Thomas,

I agree with Stephen that such log is not necessary as it's a fair
normal case. However, I see no too much benefit/risk for 2.2: it
just removes a debug log after all.

	--yliu