On Wed, 2007-10-10 at 13:51 -0600, Eric W. Biederman wrote:
Yes. Netlink sockets are per-namespace and you can use the namespace
of a netlink socket to look up a netdev.
Ok, thanks. I still haven't really looked into the wireless vs. net
namespaces problem but this will probably help.
Johannes Berg [EMAIL PROTECTED] writes:
On Wed, 2007-10-10 at 13:51 -0600, Eric W. Biederman wrote:
Yes. Netlink sockets are per-namespace and you can use the namespace
of a netlink socket to look up a netdev.
Ok, thanks. I still haven't really looked into the wireless vs. net
namespaces
Eric W. Biederman wrote:
Pavel Emelyanov [EMAIL PROTECTED] writes:
Currently indexes for netdevices come sequentially one by
one, and the same stays true even for devices that are
created for namespaces.
Side effects of this are:
* lo device has not 1 index in a namespace. This may
Pavel Emelyanov [EMAIL PROTECTED] writes:
I know there are several data structures internal to the kernel that
are indexed by ifindex, and not struct net_device *. There is the
iflink field in struct net_device. We need a way to refer to network
devices in other namespaces in rtnetlink in
On Tue, 2007-10-09 at 11:41 -0600, Eric W. Biederman wrote:
So please hold off on this until the kernel has been audited and
we have removed all of the uses of ifindex that assume ifindex is
global, that we can find.
I certainly have this assumption in the wireless code (cfg80211). How
would
Johannes Berg [EMAIL PROTECTED] writes:
On Tue, 2007-10-09 at 11:41 -0600, Eric W. Biederman wrote:
So please hold off on this until the kernel has been audited and
we have removed all of the uses of ifindex that assume ifindex is
global, that we can find.
I certainly have this assumption
Pavel Emelyanov wrote:
Currently indexes for netdevices come sequentially one by
one, and the same stays true even for devices that are
created for namespaces.
Side effects of this are:
* lo device has not 1 index in a namespace. This may break
some userspace that relies on it (and AFAIR
Sorry if this is a dumb question, but what is the model you intend for
SNMP? Do you want each namespace to be its own virtual machine with
its own, separate MIB?
Ifindex's have to uniquely identify the interface (virtual or otherwise)
to remote
queriers (not just local applications), so unless
Pavel Emelyanov [EMAIL PROTECTED] writes:
Currently indexes for netdevices come sequentially one by
one, and the same stays true even for devices that are
created for namespaces.
Side effects of this are:
* lo device has not 1 index in a namespace. This may break
some userspace that
David Stevens [EMAIL PROTECTED] writes:
Sorry if this is a dumb question, but what is the model you intend for
SNMP? Do you want each namespace to be its own virtual machine with
its own, separate MIB?
Each network namespace appears to user space as a completely separate
network stack. So
From: [EMAIL PROTECTED] (Eric W. Biederman)
Date: Tue, 09 Oct 2007 11:43:58 -0600
David Stevens [EMAIL PROTECTED] writes:
Sorry if this is a dumb question, but what is the model you intend for
SNMP? Do you want each namespace to be its own virtual machine with
its own, separate MIB?
From: David Stevens [EMAIL PROTECTED]
Date: Tue, 9 Oct 2007 09:18:25 -0700
Ifindex's have to uniquely identify the interface (virtual or
otherwise) to remote queriers (not just local applications), so
unless you pay the price of separating all the SNMP MIBs per
namespace too, it seems you'll
From: Pavel Emelyanov [EMAIL PROTECTED]
Date: Tue, 09 Oct 2007 16:19:25 +0400
Currently indexes for netdevices come sequentially one by
one, and the same stays true even for devices that are
created for namespaces.
Side effects of this are:
* lo device has not 1 index in a namespace.
David Miller [EMAIL PROTECTED] writes:
From: [EMAIL PROTECTED] (Eric W. Biederman)
Date: Tue, 09 Oct 2007 11:43:58 -0600
David Stevens [EMAIL PROTECTED] writes:
Sorry if this is a dumb question, but what is the model you intend for
SNMP? Do you want each namespace to be its own virtual
From: [EMAIL PROTECTED] (Eric W. Biederman)
Date: Tue, 09 Oct 2007 15:00:10 -0600
Regardless it is early yet and there is plenty of time to revisit this
after we solved the easier and less controversial problems.
Ok.
I would encourage you to learn how the SNMP mibs work, and whether
they
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