RE: [linux-vrf-core] "ip route show vrf X"

[Robert M. <ro...@ip...>]

Hi James,

Please see inline...

> -----Original Message-----
> From: James R. Leu [mailto:jl...@mi...]
> Sent: Friday, October 25, 2002 9:46 AM
> To: Robert May
> Cc: lin...@li...
> Subject: Re: [linux-vrf-core] "ip route show vrf X"
>
>
> Hello,
>
> On Fri, Oct 25, 2002 at 08:31:33AM -0700, Robert May wrote:
> >
> > Hi James,
> >
> > One other behavior I observed is that periodically, my system seems to
> > freeze for 1-2 seconds.  As far as I know, I am not executing
> anything to
> > initiate this behavior.
> >
> > Has anyone else encountered this ?
>
> You're the first one to report this bug :-)
>
> > Have you introduced any blocking calls into the kernel patch ?
>
> Not that I know, but I do modify some search code associated with
> TCP, UDP, and raw sockets.  Were you running any aplications that would
> have been creating new sockets at these times?  Now when you say
> 'periodically'
> how often?  At regualr intervals?  I'm wondering if there is some sort of
> TCP timer that is firing and executing a long search with a lock held.

It seems to be occurring somewhat randomly from what I can tell.  I am not
running any other applications that are creating sockets.

The only event I can think that might be causing this is traffic received on
one of the interfaces.  I have one Windows PC that's connected to one of the
networks, and if it's gateway is down (say, if I unplug the ethernet cable),
it starts spitting lots of traffic onto the internal network.  I will try to
see if I can duplicate the problem this way..

>
> > When compiling my kernel, I have only enabled the following (other then
> > defaults):
> >  * Networking Options -> Advanced Router -> Policy Routing
> >  * Networking Options -> GRE tunneling support (loadable module)
> >  * Network Device Support -> Approp. NIC support
>
> Just for for a sanity check: what NIC are you using, and have you
> run this same kernel version without VRF support?

I'm using 3c900 series drivers.  I have used this build several times,
though never with the 2.4.19 kernel specifically.

>
> Thanks!
>
> >
> > Thanks,
> > -Robert.
> >
> >
> > > -----Original Message-----
> > > From: lin...@li...
> > > [mailto:lin...@li...]On Behalf
> Of James R.
> > > Leu
> > > Sent: Friday, October 25, 2002 8:52 AM
> > > To: Robert May
> > > Cc: lin...@li...
> > > Subject: Re: [linux-vrf-core] "ip route show vrf X"
> > >
> > >
> > > Thank you for your bug reports.  The next release will
> contain the fixes.
> > > I expect to make the next release early next week.
> > >
> > >
> > > On Fri, Oct 25, 2002 at 07:38:05AM -0700, Robert May wrote:
> > > >
> > > > Hi all,
> > > >
> > > > While testing the iproute2 patch, I discovered the
> following behavior:
> > > >
> > > > Giving command "ip route show vrf X" causes ip utility to
> > > display all routes
> > > > for all VRFs, regardless of vrf SELECTOR.  In other words, it
> > > ignores the
> > > > selector.  I think that if "vrf X" selector is not given, all
> > > routes should
> > > > be shown.  If provided, it should only display the routes
> for that VRF.
> > > >
> > > > Attached patch provides the fix for this.  It should be
> applied after
> > > > linux-vrf iproute2 patch.
> > > >
> > > > Best regards,
> > > > -Robert.
> > >
> > >
> > >
> > > --
> > > James R. Leu
> > >
> > >
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> >
> >
> >
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> --
> James R. Leu
>
>