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Date: Fri, 27 Jan 2012 13:55:14 -0800 From: Jesse Gross <jesse@...ira.com> To: Joseph Glanville <joseph.glanville@...onvm.com.au> Cc: Eric Dumazet <eric.dumazet@...il.com>, David Miller <davem@...emloft.net>, steweg@...t.sk, kuznet@....inr.ac.ru, jmorris@...ei.org, yoshfuji@...ux-ipv6.org, kaber@...sh.net, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [patch v4, kernel version 3.2.1] net/ipv4/ip_gre: Ethernet multipoint GRE over IP On Fri, Jan 27, 2012 at 2:54 AM, Joseph Glanville <joseph.glanville@...onvm.com.au> wrote: > Under pathological load OVS suffers in benchmarks, continual > establishment of new flows is really not good for it - I haven't > observed this personally though. > It does however worry me that this could be used as a viable DoS.. I > don't really know what could be done to mitigate this however. OVS allows each input port to have a separate genl socket associated with it for the purpose of sending flow misses to userspace. Currently userspace uses this to round-robin around these sockets when handling flow setup requests in order to prevent one port from DoSing the others. -- 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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