Mon, 14 Nov 2011 10:59:39 +0000
Hi all,
I'm on the trail of how to get the net_cls.classid working with
traffic control. Any help with this very much appreciated, I just
can't get it working. I sent the forwarded message below to the LARTC
mailing list.
Cheers,
----- Forwarded message from Ben Green <ben@bristolwireless.net> -----
Date: Fri, 11 Nov 2011 13:36:58 +0000
From: Ben Green <ben@bristolwireless.net>
Subject: Trouble with Linux-Vserver, Cgroups and TC
To: LARTC Mailing List <lartc@mailman.ds9a.nl>
Hi all,
I'm having trouble understanding what I'm meant to do with the
net_cls.classid setting which cgroups provides. I want to be able tag
packets emanating from a particular virtual server. As a bit of
background - linux-vserver uses cgroups for resource control. Each
virtual server has it's own cgroup and process within it are
automatically added to that cgroup. When a net_cls.classid value is
set, the packets supposedly get a handle which can then be shaped (any
program that is within a cgroup and opens a socket should have it's
packets marked in this way).
The only documentation I can find are these two pages (one deleted):
http://webcache.googleusercontent.com/search?q=cache%3aN3M0Ifnt7Q0J%3avger.kernel.org/netconf2009_slides/Network%2520Control%2520Group%2520Whitepaper.odt+%22network+control+group+whitepaper%22&cd=1&hl=en&ct=clnk&source=www.google.com
http://www.linuxtopia.org/online_books/rhel6/rhel_6_resource_management/rhel_6_resource_management_sec-net_cls.html
So far I've tried attached the htb qdisc with sfq underneath as per
the LARTC, and tried with no joy to get the packets from one
net_cls.classid cgroup to go into them. I can do a whole host of
filters and things easily but
The two documents give completely different guidelines about how to
set the handle for each group, which isn't a good place to start
experimenting from.
So my questions are:
* Have I missed some documentation? Where should I look for more?
* What is the correct way to specify a major and minor handle number
in net_cls.classid?
* Is there a way to see if packets are actually tagged correctly
(other than by trying to filter them as if they were tagged/had
handles, which is my only current way I know about)?
* What else do you need to know from me to help me get this sorted?
Cheers,
==
From Ben Green
----- End forwarded message -----
==
From Ben Green
Subject: Trouble with Linux-Vserver, Cgroups and TC
From: Ben Green <ben@bristolwireless.net>
Date: Fri,
11 Nov 2011 13:36:58 +0000
Hi all,
I'm having trouble understanding what I'm meant to do with the
net_cls.classid setting which cgroups provides. I want to be able tag
packets emanating from a particular virtual server. As a bit of
background - linux-vserver uses cgroups for resource control. Each
virtual server has it's own cgroup and process within it are
automatically added to that cgroup. When a net_cls.classid value is
set, the packets supposedly get a handle which can then be shaped (any
program that is within a cgroup and opens a socket should have it's
packets marked in this way).
The only documentation I can find are these two pages (one deleted):
http://webcache.googleusercontent.com/search?q=cache%3aN3M0Ifnt7Q0J%3avger.kernel.org/netconf2009_slides/Network%2520Control%2520Group%2520Whitepaper.odt+%22network+control+group+whitepaper%22&cd=1&hl=en&ct=clnk&source=www.google.com
http://www.linuxtopia.org/online_books/rhel6/rhel_6_resource_management/rhel_6_resource_management_sec-net_cls.html
So far I've tried attached the htb qdisc with sfq underneath as per
the LARTC, and tried with no joy to get the packets from one
net_cls.classid cgroup to go into them. I can do a whole host of
filters and things easily but
The two documents give completely different guidelines about how to
set the handle for each group, which isn't a good place to start
experimenting from.
So my questions are:
* Have I missed some documentation? Where should I look for more?
* What is the correct way to specify a major and minor handle number
in net_cls.classid?
* Is there a way to see if packets are actually tagged correctly
(other than by trying to filter them as if they were tagged/had
handles, which is my only current way I know about)?
* What else do you need to know from me to help me get this sorted?
Cheers,
==
From Ben Green
Fri, 11 Nov 2011 13:36:58 +0000