From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Fastabend Subject: Re: tc filter show not displaying anything Date: Thu, 15 Dec 2011 21:00:09 -0800 Message-ID: <4EEAD059.5010907@intel.com> References: <1324010915.8451.319.camel@denise.theartistscloset.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: "netdev@vger.kernel.org" To: "John A. Sullivan III" Return-path: Received: from mga02.intel.com ([134.134.136.20]:55086 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750743Ab1LPFAL (ORCPT ); Fri, 16 Dec 2011 00:00:11 -0500 In-Reply-To: <1324010915.8451.319.camel@denise.theartistscloset.com> Sender: netdev-owner@vger.kernel.org List-ID: On 12/15/2011 8:48 PM, John A. Sullivan III wrote: > Hello, all. I'm starting to feel really stupid and showing my newbidity > to tc. I do a: > tc filter show dev eth1 > and nothing is displayed but I suspect the filter is there because if I > try to add it again, the kernel complains with: > RTNETLINK answers: File exists > We have an error talking to the kernel > > Here is what I have put together so far (disregard the silly ports - it > is just for netcat testing): > > tc qdisc add dev eth1 root handle 1: hfsc default 20 > tc class add dev eth1 parent 1: classid 1:1 hfsc sc rate 1490kbit ul rate 1490kbit > tc class add dev eth1 parent 1:1 classid 1:20 hfsc rt rate 800kbit ls rate 200kbit > tc qdisc add dev eth1 parent 1:20 handle 1201 sfq perturb 10 > tc class add dev eth1 parent 1:1 classid 1:10 hfsc rt umax 16000kbit dmax 13ms rate 400kbit ls rate 1000kbit > tc qdisc add dev eth1 parent 1:10 handle 1101 sfq perturb 10 > iptables -t mangle -A POSTROUTING -p 6 --syn --dport 443 -j CONNMARK --set-mark 0x10 > iptables -t mangle -A POSTROUTING -p 6 -j CONNMARK --restore-mark > > I then did: > > root@testswitch01:~# tc filter add dev eth1 parent 1:1 protocol ip prio 1 handle 0x10 fw flowid 1:10 > root@testswitch01:~# tc filter show dev eth1 > root@testswitch01:~# tc filter show parent 1:1 > > What simple, practical thing did I mangle? Thanks - John > #tc filter show dev eth1 parent 1:1 works here.