Re: [PATCH v2] net-tcp: TCP/IP stack bypass for loopback connections

From: Jan Engelhardt <redacted>
Date: Sun, 9 Sep 2012 19:54:42 +0200 (CEST)

On Thursday 2012-08-23 13:40, Eric Dumazet wrote:

quoted

On Thu, 2012-08-23 at 11:57 +0100, Pádraig Brady wrote:

quoted

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.