[Devel] Re: [patch 0/1] [RFC][net namespace] veth ioctl management

Daniel Lezcano dlezcano at fr.ibm.com
Tue Feb 20 01:24:39 PST 2007


Eric W. Biederman wrote:
> Daniel Lezcano <dlezcano at fr.ibm.com> writes:
> 
>> I will have look to *your* etun interface. But, PLEASE, look at the net
>> namespace network patches (L2/L3) which were rfc'ed, posted several months ago.
> 
> I have, and I have commented.
> 
>> Unfortunatly, you didn't say that when Andrey sent it this summer and when
>> Dmitry ported it to the namespaces and when it was integrated to lxc patchset by
>> Cedric and when I put the L3 namespace on top of it.
> 
> Mostly it is six of one half a dozen of the other as far as the actual implementation
> is concerned.  The practical difference is etun is not tied in any way shape or
> form to namespaces, whereas veth appears to be.
> 
>> Eric, opensource is about collaboration.
> 
> Yes.  Exactly.  That is why I am suggesting that we try to use something
> simpler than ioctl.

Why, don't you send a patch with your etun driver on top of the network 
namespace patches ? So we will be able to try it ...

> The process is about collaborating to find the best technical solution
> we can find in a timely manner.
> 
> Currently the L2 stuff derived from OpenVZ appears to be completely
> unmergable because of how the patchset is constructed. 
> 
> I am very frustrated that you are attacking me about not cooperating.
> I have made comments (that were hopefully constructive) all along the
> way.  At some points in time I was busy so I could not look at things
> in detail, but I have tried across the whole spectrum of the
> namespaces effort.  I finally sat down and wrote my own network
> namespace implementation because some very important points were not
> getting addressed 

Which ones ?
Why did you directly code before discussing with us about these points ?

>and I had some novel ideas on how to solve some of
> the problems. So I figured the contrast would be useful.  The
> containers list wasn't my primary audience of my RFC but I was
> surprised that I received no comments there.

Probably because you send directly a *big* patch touching a lot of file. 
Personnaly, I was quite surprise to discover you were working on your 
own network namespace while we were all working togheter to find a 
common solution L2/L3. This is an individualist behavior.


> Plus this is the biggest problem I see with the OpenVZ derived network
> namespace effort is lack of cooperation with the people who matter.
> The maintainers of the network stack.  Sure people who are actually
> going to use a network namespace have to agree that the code will
> solve the problem in a usable way but if the maintainers of the
> network stack don't like or can't be interested the code is never
> going anywhere.

Sure.
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