You cannot use unistd.h (or any other standard userlevel headers) in the
kernel. Whatever you are trying to do must be done in a different way.
Specifically you cannot use getpid().
What do you want/need getpid for?
Cliff
On Sun, Aug 25, 2013 at 1:35 PM, ndritsos ndrit...@gmail.com wrote:
/rand_unix.c
lines 237 - 420
The function Rand_poll use
1)getpid()
2)close(..)
3)open(...)
4getuid()
and all this functions are defined on unistd.h !
any idea someone how i can run this code on kernel level?
On 08/26/2013 02:23 AM, Cliff Frey wrote:
You cannot use unistd.h (or any
Well, the fact that this was rapidly merged into mainline inspired me to do
a bit more testing, and it found a very basic issue which I just fixed in
mainline, so if you do want to test this, just test mainline.
Cliff
On Sat, Feb 9, 2013 at 6:03 PM, Cliff Frey cl...@meraki.com wrote:
https
I would use a config like this:
Classifier(12/0800)
- CheckIPHeader
- IPClassifier(proto IP-ENCAP) // you could also use the value 4 instead
of IP-ENCAP
If you then wanted to do things with the encapsulated IP packet, you could
do something like
- StripIPHeader
- CheckIPHeader(0)
-
again!
Konstantin
On Thu, Nov 1, 2012 at 3:15 PM, Cliff Frey cl...@meraki.com wrote:
On Thu, Oct 25, 2012 at 5:22 AM, Konstantin Zaykalov zayka...@gmail.com
wrote:
Hi,
I've got a few questions regarding the design of Click router:
1) Why does Click do kernel patching (and fixing
On Thu, Oct 25, 2012 at 5:22 AM, Konstantin Zaykalov zayka...@gmail.comwrote:
Hi,
I've got a few questions regarding the design of Click router:
1) Why does Click do kernel patching (and fixing include files via
fixincludes.pl script) for g++ compiler instead of providing wrapper
functions,
Not directly possible.
The closest that you can do is either using some other macro language (i.e.
the c preprocessor), or making a 2-input, 2-output elementclass, where you
do
my_eltclass [1] - CONFIG_STUFF_GOES_HERE - [1] my_eltclass;
Cliff
On Tue, Jun 19, 2012 at 6:56 AM,
). In my
opinion all of this should require max ~15MB. Is there any way to debug
this problem?
Jakub
2012/6/5 Cliff Frey cl...@meraki.com
Beyers is correct. However, you will still likely be limited to at most a
few hundred MB (and quite possibly much smaller). If you want larger than
You don't want to use KernelHandlerProxy, instead you need to mount
clickfs. click-install can do this for you, or you can run it yourself
mount -t click none /click
you might need to install the proclikefs kernel module first though.
Cliff
On Sun, Apr 29, 2012 at 8:22 AM, Cong Guo
The format changed, it is now
click_chatter(%p{element}, this);
if you run this from your click directory, it should fix up all of your
code:
sed -i -r 's/%\{(element|ip_ptr|ether_ptr|timeval|timestamp)\}/%p{\1}/g'
`git grep -l -E '%\{(element|ip_ptr|ether_ptr|timeval|timestamp)\}'`
Cliff
On
On Thu, Feb 16, 2012 at 10:49 AM, Cliff Frey cl...@meraki.com wrote:
What version of click are you running? Have you made any changes to the
source at all? What options did you use to configure/make?
What is the exact symbol error that you are getting?
Cliff
On Tue, Feb 14, 2012 at 10:26 PM
Hi Ruetee,
Thanks for the bug report! I just fixed this in mainline click, so if you
update to the latest version on github, it should fix the problem.
Cliff
On Tue, Feb 14, 2012 at 1:26 PM, Ruetee Chitpranee ruet...@gmail.comwrote:
Hi,
I'm trying to use *BandwidthRatedSplitter* as a
What version of click are you running? Have you made any changes to the
source at all? What options did you use to configure/make?
What is the exact symbol error that you are getting?
Cliff
On Tue, Feb 14, 2012 at 10:26 PM, udit kumar yudistra...@gmail.com wrote:
Hi,
I am an Mtech student
hmm, this looks like a bug to me.
However, if you use AverageCounter and the byte_rate handler instead of
Counter and the bit_rate handler, it seems to work.
Cliff
On Tue, Feb 14, 2012 at 10:46 AM, Ruetee Chitpranee ruet...@gmail.comwrote:
Hi,
I'm trying to measure bit rate of a source by
You make need to do a clean rebuild if you added the ELEMENT_LIBS line to
your element more recently. (there is a chance that you can just run 'make
elemlist', but I'm not sure)
You can run make with V=1 in order to see the actual linker command that
click is using (instead of just seeing LINK).
debugging info for this crash yet. Can you
think of anything why this can be happening?
Thank you.
Regards,
Harkeerat Bedi
University of Memphis
On Tue, Feb 7, 2012 at 11:04 AM, Cliff Frey cl...@meraki.com wrote:
I'm glad that the suggestions helped out.
You could try various forms of kernel
Not sure if you are still working on this, but it is possible that receive
offload could affect/hurt you by causing non-linear skbs.
to see offload settings:
ethtool -k eth0
disable receive offload:
ethtool -K eth0 gro off lro off
it might be worth a shot if it is still easy for you to test.
this?
I am able to run my package (and debug it using gdb) in user level and do
not experience any issues.
Thank you once again.
Regards,
Harkeerat Bedi
University of Memphis
On Mon, Feb 6, 2012 at 1:11 AM, Cliff Frey cl...@meraki.com wrote:
responses inline
On Sun, Feb 5, 2012 at 10:41
I don't think that anyone on the mailing list can give much support to such
an old version of click.
I don't think that ARPQuerier is the problem, the problem is that you are
running out of memory. You need to find your memory leak and fix it.
Newer versions of click can be configured/compiled
Look at RatedUnqueue/RatedSplitter (and there are BW* versions of those
elements as well)
Also look at DRRSched and StrideSched elements.
Cliff
On Mon, Jan 16, 2012 at 3:36 AM, Ruetee Chitpranee ruet...@gmail.comwrote:
Hi,
I would like to know if any or some standard elements can be
you should be able to see where the packets are getting dropped. Look for
error counters from ifconfig, and look at the drops handlers of each
different element. If any of those is going up, that can point to what the
problem is.
you can actually try just running 'grep . /click/.e/*/drops' to
-install --thread=4 site7_router1.click
thanks!
best
Bingyang
On Sat, Dec 3, 2011 at 12:42 PM, Cliff Frey cl...@meraki.com wrote:
___
click mailing list
click@amsterdam.lcs.mit.edu
https://amsterdam.lcs.mit.edu/mailman/listinfo/click
mature element, and there should not be a
bug there. But the experiment results told me that something got wrong.
Should I use a thread safe queue instead of queue, when I use multithreads?
Thanks
Bingyang
Sent from my iPhone
On Dec 4, 2011, at 12:31 AM, Cliff Frey cl...@meraki.com wrote
if you modify click-align.cc to specify that the FromOcteon element
produces packets that are (4,2) aligned, then you won't get the extra
Align() element.
If you really want to do what you are asking for, you could likely add
-DHAVE_INDIFFERENT_ALIGNMENT to CXXFLAGS/CFLAGS, but I'm not positive
but what should i put on Router or context?
Thanks
On Tue, Oct 25, 2011 at 6:09 PM, Cliff Frey cl...@meraki.com wrote:
You can use the cp_element function to do this.
On Tue, Oct 25, 2011 at 5:08 AM, Xavier Salip saverion...@gmail.comwrote:
Hi list,
How can i relate to an element by it's
You could try adding --disable-linux-symbols to the configure command...
not sure if it'll fix the issue for you or not though.
(this will break click packages... so if you need to use those, then this
isn't the right fix)
If that does fix it, then my guess is that the bug is in click-buildtool
You can look at the HandlerCall interface if you really want to use
read-handlers.
Often in cases like this, it is easier to actually pass a pointer from one
element to another through the config. ARPQuerier can do this with
ARPTable, or etherswitch/spantree.cc does this as well. Search for
, Oct 11, 2011 at 6:46 PM, Cliff Frey cl...@meraki.com wrote:
You can look at the HandlerCall interface if you really want to use
read-handlers.
Often in cases like this, it is easier to actually pass a pointer from one
element to another through the config. ARPQuerier can do
I suspect that you have a local static variable in one of your elements...
something like
void MyElt::myfunc() {
static String foo = foo;
...
}
and I believe that your compiler is adding guards around the initialization
of that variable (in case multiple threads were to try to do it at the
You could try adding BURST 10 or something to your FromDevice configuration
and see if that makes a difference.
You could also try changing tasks_per_iter (there is a top level handler, so
you could add Script(write tasks_per_iter 300) to your config).
I don't actually think that either of the
I find that dot always does a terrible job whenever the graph contains a
cycle. I recommend splitting up elements that generate responses to
requests... so I would use a ccss file that has the following in it:
ICMPPingResponder {
port-split: both;
}
Cliff
On Wed, Oct 5, 2011 at 11:12
-l /tmp/foo.pcap
-rw-r--r-- 1 root root *24* 2011-10-03 09:17 /tmp/foo.pcap
Cliff
On Mon, Oct 3, 2011 at 6:56 AM, Luca Costantino
luca.costant...@gmail.comwrote:
2011/9/30 Cliff Frey cl...@meraki.com:
This works for me:
click -e '
InfiniteSource(DATA packet contents here are ascii, LIMIT
This works for me:
click -e '
InfiniteSource(DATA packet contents here are ascii, LIMIT 1, STOP true)
- UDPIPEncap(192.168.1.2, 1000, 10.0.0.2, 2000)
- IPPrint(PAYLOAD ascii)
- Discard
'
You could also look at FromIPSummaryDump to construct packets manually.
Cliff
On Fri, Sep 30, 2011 at 6:34
The click language man page describes both single and double pipes quite
well:
man doc/click.5
I don't believe that clicky can auto-generate click configurations, but it
is very useful for looking at a pre-built configuration.
Cliff
2011/9/29 Luca Costantino luca.costant...@gmail.com
hi
You can either add a ControlSocket element to your configuration, or run
click with the -p argument to set up a control socket for you. You can then
telnet to the control socket and read/write handlers that way.
http://read.cs.ucla.edu/click/elements/controlsocket
On Thu, Sep 22, 2011 at 7:08
For your first question, I'm not sure what is going on. It is important
that the AggregateCounter is not frozen... perhaps by adding chatter calls
to elements/analysis/aggcounter.cc you can get to the bottom of the issue.
I'm not quite sure what you mean by this second point, but you could add a
Can you please send the config that you are using?
On Sun, Jul 17, 2011 at 6:21 AM, Hamid Farhadi
qq119...@iii.u-tokyo.ac.jpwrote:
Hi
I wanna do this: Tap0 -EtherSwitch - Tap1
To do this I should use FromHost(Tap0). otherwise the switch does not
forward my packets. once I use FromHost(), I
Yes, I am the one responsible for this (broken) code, and I think that your
assessment is correct, and that both the write handler and the configure()
methods should be improved. Ideally we could add a testcase for it too...
but it'll be ok without one.
If you could make a patch and/or submit a
Hi Lars,
Here are elements that Meraki has used for this purpose. If you find them
useful, we can likely commit them in to mainline click.
https://github.com/clifffrey/click/tree/vlan-elements
Cliff
On Thu, May 5, 2011 at 9:23 AM, Bro, Lars lars@siemens.com wrote:
Hi, list
I am
On Fri, Apr 22, 2011 at 12:59 AM, Roberto Riggio
roberto.rig...@create-net.org wrote:
Il 22/04/2011 09:31, Cliff Frey ha scritto:
Oh yes, sorry for misunderstanding.
We actually had issues with KernelTun. We ended up adding a BURST
parameter to it. There are weird interactions between
I would expect that you are _not_ CPU limited. This is what I would expect
to see if FromDevice is just only rarely scheduled.
If you are still worried about fairness, you can set the BURST parameter on
FromDevice to be higher, but I really think that the issue is that
FromDevice's task is not
Author: Cliff Frey cl...@meraki.com
Date: Wed Mar 2 11:01:59 2011
(To/From)UserDevice: cleanups, fixups, features
ToUserDevice is now much more configurable, supporting multiple
encapsulation
types (none, pcap, and length-delimited). It also supports acting like
a
datagram socket
I wanted to benchmark the difference between ThreadSafeQueue and
one-queue-per-thread + RoundRobinScheduler + Unqueue + another-Queue.
However, I ended up finding a bug.
This config:
elementclass Foo {
is :: InfiniteSource - [0] output;
};
f0::Foo,f1::Foo,f2::Foo,f3::Foo,f4::Foo,f5::Foo
-
at the end
of InfintieSource::run_task(). I don't know what's going on. Commenting
out all notification does not help.
Eddie
On 2/24/11 8:12 AM, Cliff Frey wrote:
I wanted to benchmark the difference between ThreadSafeQueue and
one-queue-per-thread + RoundRobinScheduler + Unqueue + another
2011/2/21 Justok Jiang|蒋小可 justo...@gmail.com
Dear all,
I am sure If I could send email to this mailling-list when I have some
Questions about Click.
If It's not appropriate, Please skip this email; but I would be thanksful
if some do me some favor to answer.
Q. 1/
FromDevice(eth1)-
member... no
checking whether skb_shinfo has a ufo_size member...
for many times, maybe something was wrong, could you point it out or give
me some clues?
thx.
2011-02-23
--
Justok Jiang|蒋小可
--
*发件人：* Cliff Frey
*发送时间：* 2011-02
I would say that this is a bug by some definition, but it is a very tricky
one to solve. Specifically, even if you did change the queueing to be in
arpquerier, you would still need a pointer back from arptable - arpquerier
so that if an arp response came in on one querier that updated the
I believe that I can reproduce this, give or take.
if I use this click config:
InfiniteSource
- q1 :: ThreadSafeQueue(CAPACITY 10)
- rs :: RatedUnqueue(RATE 1000)
- q :: ThreadSafeQueue(CAPACITY 1)
- uq :: Unqueue
- c :: Counter
- d :: Discard;
Script(wait 3, print $(c.count) $(uq.scheduled)
Yes, you either need to call push() from your run_timer method, or you need
to schedule a task, and have the task call push(). However, you can only
call push if you have a packet, so one of those methods would need to create
a packet first (either by pulling from a pull input, or by creating a
On Mon, Feb 7, 2011 at 9:29 AM, Eddie Kohler koh...@cs.ucla.edu wrote:
Try CLICK_LALLOC(size) and CLICK_LFREE(pointer, size), which allow larger
allocations than operator new. 'git grep LALLOC'
But you may just be doomed. It is not generally possible to allocate GBs
in
the kernel as far
Eddie very recently made changes to the parser, allowing for new syntax and
types of connections, so I would look at his recent commits.
Cliff
On Fri, Jan 28, 2011 at 11:05 AM, Philip Prindeville
philipp_s...@redfish-solutions.com wrote:
On 1/21/11 6:48 PM, Eddie Kohler wrote:
On 01/21/2011
Hi Chuan,
Assuming that you are running click in userlevel, you should look at the
ControlSocket element. It will open up a socket that you can connect to and
send commands to.
Cliff
On Wed, Jan 19, 2011 at 4:58 AM, wubaochuan wubaoch...@seu.edu.cn wrote:
Hi all,
I am using user level
Can you telnet to that port with the command
telnet 127.0.0.1 1234
or
telnet 10.3.16.138 1234
or
echo read config | nc localhost 1234
?
This will help us see if the problem is with your client.c or with the way
you are running click.
I can connect to a control socket by running the
I actually really like this property of elementclasses. Specifically, an
elementclass is a substitute for an element. In cases like you describe
Philip, i end up writing configs like:
elementclass MyNull { input - output; }
// input/output 0: internet
// input/output 1: LAN
elementclass
of a pipeline in one other
elementclass (for IP packets);
(2) needs to be plumbed to the outputs of several instances of the above
elementclass (for the ARP packets);
Maybe I'm missing something in what you're saying.
On 1/17/11 6:09 PM, Cliff Frey wrote:
I actually really like this property
Thank you for the feedback. I pushed both of these changes to mainline.
Cliff
On Wed, Jan 5, 2011 at 6:30 AM, Ian Rose ianr...@eecs.harvard.edu wrote:
I agree! I wrote something (functionally) similar for my own use and
found it very helpful (but this patch is much cleaner and simpler).
/cd08cd8b7a14310d029ab6911c701a6c1b1cdd0b
https://github.com/clifffrey/click/commit/6e5677a840ecd4991417335834c020ffd58099b0
commit 6e5677a840ecd4991417335834c020ffd58099b0
Author: Cliff Frey cl...@meraki.com
Date: Tue Jan 4 21:51:42 2011
Add easy-to-use userlevel backtrace debugging.
If you run click
Thanks for the report! The function prototype for configure was wrong. I
just committed the fix to mainline.
On Fri, Dec 3, 2010 at 11:19 AM, Roman Chertov rcher...@cs.ucsb.edu wrote:
I am using Click that I pulled from git yesterday, and there is an
interesting
problem with confparse. I
I'm not sure at all what the current best-guess set of patches is to make
patchless fully work. I cobbled together enough patches from the list and
did very very basic testing on my machine, and came up with this branch
https://github.com/clifffrey/click/tree/working-fromhost-fixincludes
It
see call back trace I'll have a look.
Joonwoo.
On Tue, Nov 16, 2010 at 10:23 PM, Cliff Frey cl...@meraki.com wrote:
I'm not sure at all what the current best-guess set of patches is to make
patchless fully work. I cobbled together enough patches from the list
and
did very very basic
Well, you could make it so that click-align knew that there were no
alignment guarantees after your element (assuming that your element actually
does not provide any alignment guarantees)
I think that you would do this by adding a clause in click-align.cc with
your element and
I don't have a setup that I can easily/quickly use to test. All the same,
I'm curious what the interface statistics do during this time on both of the
interfaces (i.e. any errors? how many packets transmitted/received)
Also, I'm curious what was going on inside of ToDevice and FromDevice. The
I have some elements that can be useful for this (basically
Get/Set/StoreEtherAddress elements to go along with Get/Set/StoreIPAddress
elements).
You are welcome to take them from here:
http://github.com/clifffrey/click/tree/add-get-set-etheraddress
If other people on the list would find them
Xianghua,
Thank you for this report, the compile issue that you found should be fixed.
Cliff
On Wed, Oct 20, 2010 at 1:32 PM, Xianghua Xiao xiaoxiang...@gmail.comwrote:
make[1]: Entering directory `/home/xxiao/devel/misc/click/userlevel'
CXX ../lib/master.cc
../lib/master.cc: In member
It sure looks reasonable to me. I'm not actually using the element
personally... the cpu_to_leXX changes should all be no-ops on x86, which is
likely the only architecture that this has been tested on before...
I don't know about the retries part... I might lean towards setting it
to
I am getting the stuck behavior that Beyers describes. However if I add the
script, the problem for the most part goes away.
Specifically, if I use this config:
//
is1::InfiniteSource(DATA \00 00 c0 ae 67 ef 00 00 00 00 00 00 08 00,
I am planning on adding this element to click. If anyone has any
comments/feedback on it, let me know.
Cliff
From 1e1a52e7aa6aa08e362210ba705bac7ca0d5e134 Mon Sep 17 00:00:00 2001
From: Cliff Frey cl...@meraki.com
Date: Wed, 29 Sep 2010 15:55:10 -0700
Subject: [PATCH] add TCPFragmenter element
to bypass this
difficulty?
--- Στις *Πέμ., 19/08/10, ο/η Cliff Frey cl...@meraki.com* έγραψε:
Από: Cliff Frey cl...@meraki.com
Θέμα: Re: [Click] empty queue
Προς: Harald Schioeberg har...@net.t-labs.tu-berlin.de
Κοιν.: Panos Μatzakos magic_pa...@yahoo.gr, cl...@pdos.csail.mit.edu
Ημερομηνία
I agree with Harald,
TimedSource might not be able to fill up a Queue as fast as you think in CPU
bound cases. Specifically if you look at timedsource.cc, you can see that
it pushes at most one packet per timer-execution, and then schedules another
timer for the future (even if TimedSource is
Elements such as ConfParseTest are used exclusively for unit testing
running
git grep -i confparsetest
in the click checkout will show you where it is used, specifically
test/standard/confparse-01.testie
is a test that uses that element
You can run the test with:
./test/testie
if you look at click/lib/glue.cc at the implementation of click_lalloc, you
can see that it will use vmalloc for allocations that are larger than 128kb,
so that would be queue size of 32k for 32 bit machines, or 16k for 64 bit
machines.
I don't believe that ThreadSafeQueue is necessary as long as
CLICK_LALLOC_MAX_SMALL 131072
to
# define CLICK_LALLOC_MAX_SMALL 99
and it's a 64bit kernel, do we expect a problem here?
Thanks,
On Thu, Jul 1, 2010 at 5:01 PM, Cliff Frey cl...@meraki.com wrote:
if you look at click/lib/glue.cc at the implementation of click_lalloc,
you
can see
Perhaps you could add a BURST-type parameter to FromDevice to allow it to
process multiple packets at once, therefore favoring receive? I'm not sure
how easily this could be done while making sure that the fromdevice.cc code
doesn't block... but perhaps it is as easy as changing the 1 argument to
look at the documentation for ControlSocket
http://read.cs.ucla.edu/click/elements/controlsocket
http://read.cs.ucla.edu/click/elements/controlsocketAlthough I'm curious
why you are interested in the LLRPC mechanism. It is generally much easier
to use read, write, or read+param handlers to
Thanks,
Patricio
*From:* Cliff Frey [mailto:cl...@meraki.com]
*Sent:* Friday, May 14, 2010 11:01 AM
*To:* Sanhueza, Patricio
*Subject:* Re: [Click] LLRPC Examples
look at the documentation for ControlSocket
http://read.cs.ucla.edu/click/elements/controlsocket
Although I'm curious why
I believe that the config, exactly as you pasted it, will work just fine.
Specifically, if in MyElement::configure(), you use cp_va_kparse with
cpElementCast, 0, MyOtherElement, _other_elt_ptr,
then I believe that you will see exactly the effect that you want. When
searching for the element
} -- sniffs ARP sender info
* Cliff Frey
*
* Copyright (c) 2009 Meraki, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the Software),
* to deal in the Software without restriction, subject
click already supports exactly what you are talking about!
if you configure it with
./configure --enable-stats=2
then every element is given a 'cycles' read handler.
However, using generic profiling tools is likely to also give you feedback
(with much lower overhead). Perhaps take a look at
First the click configuration is loaded. This means that all elements are
created (including all Script elements) and configured and initialized. At
this point, the click configuration is considered to be loaded. Then
tasks are allowed to run. In your example, the Source element, UnQueue
.
Btw, can you give me any advices on the exponential or poisson arrival
rate source?
Jimmy
On Mon, Mar 8, 2010 at 2:06 AM, Cliff Frey cl...@meraki.com wrote:
You can easily do that with a Script element... you could use either
'read'
or 'print' to display the data.
If you wanted even
You can easily do that with a Script element... you could use either 'read'
or 'print' to display the data.
If you wanted even more control, you could add a ControlSocket to your
config and then write a script that would access the ControlSocket.
Here is an example script element that should do
I'd be curious what the system and interrupt times were on the various
machines. Perhaps there is more linux kernel overhead in the different
configurations. These numbers likely show up in top, or you can read raw
values from /proc/stat and see how they are changing.
Cliff
On Sat, Mar 6, 2010
Jesse,
Generally simple_action() is only used for elements with exactly one input
and one or two outputs.
If you want to make an element that maps many-to-many, then you would need
to define push() and/or pull() methods. There is no need to override the
simple_action method if you override
The problem is that you defined a constructor method, but didn't give it a
body.
inline
VlanTables::PortInfo::PortInfo(bool _trunk,bool _active,VLANPORT_Table
_vlan)
:trunk(_trunk),active(_active),vlan(_vlan) *{ /* must have empty body
here */ }*
In general though, you should probably
you need to use cpElementCast rather than cpElement, see arpquerier.cc for
an example.
On Mon, Feb 8, 2010 at 8:39 AM, David Sesmero Sáez deivid_se...@hotmail.com
wrote:
Hi!
I'm trying to pass one element into other element for using some functions
of the element in the other element.. My
Take a look at click/elements/standard/counter.cc to see a simple example of
one element that uses a handler of another... you can pass the handlers as
config parameters of your elements.
In some cases, it can be easier to just pass the element itself... For
instance you can pass an ARPTable
Could this issue be related to the fact that the interface that i'm using
is a wireless interface running in monitor mode (madwifi driver)?
Yes, this could definitely be related to the issue. As I said, I believe
that click assumes that all FromDevice elements will always push packets
with 4
Without knowing anything for sure, I suspect that your ethernet driver has a
bug in the transmit side when transmitting traffic faster than the wire
rate.
You could try a configuration like
InfiniteSource(LENGTH 1000) - EtherEncap(...) - Queue - ToDevice;
and I imagine that you would see the
a ShifterAligner.
Cliff
On Thu, Jan 21, 2010 at 1:59 PM, Roberto Riggio
roberto.rig...@create-net.org wrote:
Actually wifidecal pulls 8 bytes (wifi header + llc) and pushes 14 bytes
(ethernet header), shouldn't this require
the 2 bytes offset Align(4 2)?
R.
On 01/21/2010 07:24 PM, Cliff
Yes, it is possible, that is exactly what READ_PARAM is for. I just looked
through the click elements/ source code for READ_PARAM to find an example...
I would look at
elements/ip/iproutetable.cc:lookup_handler
in the most recent git sources for an example.
Cliff
On Mon, Jan 11, 2010 at 2:29
You need to run tests and see for yourself. Clearly it depends on the size
of the configuration as well. I know that we end up loading a very large
click configuration (~2000 click elements) on a 200MHz mips device
in approximately 1 second.
If super fast configuration changes are required, you
Do you really care about latency? Or just overall performance (which is
limited by the sum of the per-element latency)? Are these measurements when
_new_ mappings are being created or using existing mappings?
Are these packets unique already? or is expensive_uniquify being called?
You can try
The easiest way I have gotten around this is to use LinkUnqueue instead (It
is not exactly a drop-in replacement though, as it is pull-to-push).
However it would also be possible to set up a timer in the BandwidthShaper
element and put the task to sleep.
Cliff
On Mon, Dec 14, 2009 at 9:39 AM,
The way Roberto suggests is the highest-performance option. (pass one
element as a configuration parameter to another element)
If you want to actually use a read handler, look at the HandlerCall class...
and the cpHandlerCallRead definition in confparse.hh... and it should be
fairly easy to set
but not the softirq?
I can't distinguish between irq and softirq at driver , FromDevice and
ToDevice.
2009/11/29 Cliff Frey cl...@meraki.com
56% softirq implies to me that 56% of the time is spent in the packet
receive functions in your ethernet or wireless driver as click should
not be running
Your config looks reasonable to me.
How are you measuring performance? I know if you are running TCP on the
devices as well (if you are testing tcp-to-the-device rather than forwarding
perfomance) that can slow things down (because of TCP checksumming and
because linux will keep a copy of every
Luca,
You need to add a FromHost element to your config which will receive packets
from Linux, and a ToHost element that will deliver packets to Linux.
Cliff
On Thu, Nov 19, 2009 at 10:10 AM, Luca Belforte
luca.belfo...@student.uclouvain.be wrote:
I put here my click configuration
I'm
, 2009 at 10:48 AM, Luca Belforte
luca.belfo...@student.uclouvain.be wrote:
Hello Cliff,
thanks, this sound what i was searching for. (Strange that the xorp
generator script doesn't use it)
Did you have an example on how i can configure it?
Thanks
Luca
Cliff Frey wrote:
Luca,
You
With some work, you can change Classifier/IPFilter/IPClassifier to be
reconfigurable, which might allow this to be possible. I have always done
this sort of task by writing my own element, but I'm not exactly sure what
you want to do.
Cliff
On Wed, Aug 26, 2009 at 6:39 AM, blues man
I would look at click/lib/notifier.cc:downstream_full_signal for an example
of using Router::downstream_elements(...), which could likely do what you
want..
However given your actual end goal, I think that you might want to do this a
different way I would wonder if
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