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Date: Sun, 09 Sep 2012 17:39:03 -0400 (EDT) From: David Miller <davem@...emloft.net> To: jengelh@...i.de Cc: eric.dumazet@...il.com, P@...igBrady.com, brutus@...gle.com, edumazet@...gle.com, netdev@...r.kernel.org Subject: Re: [PATCH v2] net-tcp: TCP/IP stack bypass for loopback connections From: Jan Engelhardt <jengelh@...i.de> Date: Sun, 9 Sep 2012 19:54:42 +0200 (CEST) > > On Thursday 2012-08-23 13:40, Eric Dumazet wrote: >>On Thu, 2012-08-23 at 11:57 +0100, Pádraig Brady wrote: >> >>> Just to quantify the loopback testing compat issue. >>> I often do stuff like the following to test latency. >>> Will that be impacted? >>> >>> tc qdisc add dev lo root handle 1:0 netem delay 20msec >>> >> >>Yes this will. At least for tcp traffic this wont "work". >> >>TCP friends bypass layers, by directly queuing skbs to sockets. >> >>-> no iptables, > > If it amounts to that, you will have upset users rather soon. This is over "loopback", you're just being rediculous. %99.9999 of people simply do not care. -- 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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