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From: Ariane Keller <ariane.keller@tik.ee.ethz.ch>
To: Patrick McHardy <kaber@trash.net>
Cc: Ariane Keller <ariane.keller@tik.ee.ethz.ch>,
	Ben Greear <greearb@candelatech.com>,
	Stephen Hemminger <shemminger@linux-foundation.org>,
	netdev@vger.kernel.org, herbert@gondor.apana.org.au,
	Rainer Baumann <baumann@tik.ee.ethz.ch>
Subject: Re: [PATCH 0/2] netem: trace enhancement
Date: Mon, 10 Dec 2007 15:32:14 +0100	[thread overview]
Message-ID: <475D4DEE.2080308@ee.ethz.ch> (raw)
In-Reply-To: <4756A213.2060806@trash.net>

I finally managed to rewrite the netem trace extension to use rtnetlink 
communication for the data transfer for user space to kernel space.

The kernel patch is available here:
http://www.tcn.hypert.net/tcn_kernel_2_6_23_rtnetlink

and the iproute patch is here:
http://www.tcn.hypert.net/tcn_iproute2_2_6_23_rtnetlink

Whenever new data is needed the kernel module sends a notification to 
the user space process. Thereupon the user space process sends a data 
package to the kernel module.
I had to write a new qdisc_notify function (qdisc_notify_pid) since the 
other was acquiring a lock, which we already hold in this situation.

I hope everything works as expected and I'm looking forward for your 
comments.

Thanks!
Ariane

  reply	other threads:[~2007-12-10 14:32 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-11-20 22:11 [PATCH 0/2] netem: trace enhancement Ariane Keller
2007-11-27 13:57 ` Ariane Keller
2007-11-29 21:45   ` Stephen Hemminger
2007-11-29 22:03     ` Patrick McHardy
2007-11-30 16:25       ` Ariane Keller
2007-12-03  7:45         ` Patrick McHardy
2007-12-03  9:12           ` Ariane Keller
2007-12-03 17:35             ` Patrick McHardy
2007-12-03 18:29               ` Ben Greear
2007-12-04 14:45                 ` Ariane Keller
2007-12-04 14:58                   ` Patrick McHardy
2007-12-05 12:57                     ` Ariane Keller
2007-12-05 13:05                       ` Patrick McHardy
2007-12-10 14:32                         ` Ariane Keller [this message]
2007-12-12 23:13                           ` Stephen Hemminger
2007-12-04 17:40                   ` Ben Greear
2007-12-04 17:54                     ` Ariane Keller
2007-12-04 18:07                       ` Ben Greear
2007-12-04 21:41                         ` Ariane Keller
2007-12-04 22:21                           ` Ben Greear
2007-12-05  6:12                             ` Ariane Keller
2007-12-23 19:54                             ` Ariane Keller
2007-12-23 19:54                             ` [PATCH 0/2] netem: trace enhancement: kernel Ariane Keller
2007-12-28 16:08                               ` Patrick McHardy
2007-12-28 21:02                                 ` Ariane Keller
2007-12-23 19:54                             ` [PATCH 0/2] netem: trace enhancement: iproute Ariane Keller

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