From: Stephen Hemminger <shemminger@vyatta.com>
To: Stephen Hemminger <shemminger@vyatta.com>
Cc: bridge@lists.linux-foundation.org,
rahul bhardwaj <rahul_bhardwaj36in@yahoo.co.in>
Subject: Re: [Bridge] BRCTL is displaying only 32 bridge interfaces even /proc/net/dev is showing more then that
Date: Tue, 31 Mar 2009 13:50:38 -0700 [thread overview]
Message-ID: <20090331135038.6f5fc421@nehalam> (raw)
In-Reply-To: <20090330180331.4d2307d7@nehalam>
On Mon, 30 Mar 2009 18:03:31 -0700
Stephen Hemminger <shemminger@vyatta.com> wrote:
> On Fri, 20 Mar 2009 15:15:50 +0530 (IST)
> rahul bhardwaj <rahul_bhardwaj36in@yahoo.co.in> wrote:
>
> > Hi All,
> > I am using Linux 2.6.15 kernel. I want to create 4094 bridge interface but I am able to see only 32 bridge interfaces with the help of "brctl show". I am able see other interfaces into /proc/net/dev but brctl is not showing more then 32. It is also not allowing any operations (add/del) over those interfaces. Is it correct behaviour or I have do some changes in some settings.
> > Could anybody please help me in this?
> >
> 2.6.15 is old, so I could well be wrong, but as I remember:
> The old interface (via ioctl) only had room for 32 bridges, so probably that
> was it. When interface changed to sysfs that was addressed.
> _______________________________________________
> Bridge mailing list
> Bridge@lists.linux-foundation.org
> https://lists.linux-foundation.org/mailman/listinfo/bridge
>
Did you try updating the bridge utils. The older versions had MAX_BRIDGES
defined as 32, and the code was written such that it read the whole configuration
multiple times.
Current code has MAX_BRIDGES=1024, but that is only used on older kernels
that don't support sysfs. With sysfs the interface just walks the contents
of /sys/class/net and that can handle as many interfaces as you have memory for.
No kernel change should be needed.
prev parent reply other threads:[~2009-03-31 20:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-20 9:45 [Bridge] BRCTL is displaying only 32 bridge interfaces even /proc/net/dev is showing more then that rahul bhardwaj
2009-03-31 1:03 ` Stephen Hemminger
2009-03-31 20:50 ` Stephen Hemminger [this message]
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