From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754213AbYIJRlT (ORCPT ); Wed, 10 Sep 2008 13:41:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751817AbYIJRlD (ORCPT ); Wed, 10 Sep 2008 13:41:03 -0400 Received: from smtp-out.google.com ([216.239.33.17]:56521 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751744AbYIJRlB (ORCPT ); Wed, 10 Sep 2008 13:41:01 -0400 DomainKey-Signature: a=rsa-sha1; s=beta; d=google.com; c=nofws; q=dns; h=date:from:to:cc:subject:message-id:mime-version:content-type; b=KL1dl6YCTDOkusQ+t5KJv1qjmatQuYptGsFlWdmJsvW0+tEibg81bFOHrlygrbWGS eNoNARh3qZbdZGF4fKBKg== Date: Wed, 10 Sep 2008 10:40:26 -0700 (PDT) From: Ranjit Manomohan To: davem@davemloft.net, kaber@trash.net, akpm@linux-foundation.org, lizf@cn.fujitsu.com, menage@google.com, tgraf@suug.ch cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH 0/2] Traffic control cgroups subsystem Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Incorporated fixes suggested by Li Zefan. Please consider for net-next-2.6. This patch provides a simple resource controller (cgroup_tc) based on the cgroups infrastructure to manage network traffic. The cgroup_tc resource controller can be used to schedule and shape traffic belonging to the task(s) in a particular cgroup. The implementation consists of two parts: 1) A resource controller (cgroup_tc) that is used to associate packets from a particular task belonging to a cgroup with a traffic control class id ( tc_classid). This tc_classid is propagated to all sockets created by tasks in the cgroup and will be used for classifying packets at the link layer. 2) A new traffic control classifier (cls_cgroup) that can classify packets based on the tc_classid field in the socket to specific destination classes. An example of the use of this resource controller would be to limit the traffic from all tasks from a file_server cgroup to 100Mbps. We could achieve this by doing: # make a cgroup of file transfer processes and assign it a arbitrary unique # classid of 0x1234 - this will be used later to direct packets. mkdir -p /dev/cgroup mount -t cgroup tc -otc /dev/cgroup mkdir /dev/cgroup/file_transfer echo 0x1234 > /dev/cgroup/file_transfer/tc.classid echo $PID_OF_FILE_XFER_PROCESS > /dev/cgroup/file_transfer/tasks # Now create a HTB class that rate limits traffic to 100mbits and attach # a filter to direct all traffic from cgroup file_transfer to this new class. tc qdisc add dev eth0 root handle 1: htb tc class add dev eth0 parent 1: classid 1:10 htb rate 100mbit ceil 100mbit tc filter add dev eth0 parent 1: handle 800 protocol ip prio 1 cgroup value 0x1234 classid 1:10 Signed-off-by: Ranjit Manomohan ---