From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Liu Subject: Re: dynamically set bandwidth limits of a virtual interface Date: Thu, 27 Dec 2012 12:33:19 +0000 Message-ID: <1356611599.19238.13.camel@iceland> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Rohit Damkondwar Cc: wei.liu2@citrix.com, "xen-devel@lists.xen.org" List-Id: xen-devel@lists.xenproject.org On Thu, 2012-12-27 at 08:46 +0000, Rohit Damkondwar wrote: > Hi all. I want to set bandwidth limits to a virtual interface > dynamically(without restarting virtual machine). I have been browsing > xen source code 4.1.3. I looked into libxen folder(xen_vif.c) and > hotplug(linux) folder. Earlier in xen 3.0 , xenvif struture > (driver/net/xen-netback/ > interface.c + common.h) and tx_add_credit function could be used to > modify rate limits. I want to change bandwidth limits dynamically of a > virtual interface in xen 4.1.3. Where should I look for in xen 4.1.3? > > Please help. > Xen vif has a parameter called 'rate', I don't know whether it suits you. Also, you can have a look at external tool like tc(8). My vague thought is that Vif is just another interface in Dom0, tc(8) should be able to traffic-shape Vif. Last but not least, patches are always welcomed. ;-) Wei.