On Tue, 14 Nov 2017 14:54:20 -0800
Gregory Rose <[email protected]> wrote:

> On 11/9/2017 9:30 AM, Flavio Leitner wrote:
> > Today Open vSwitch doesn't know about network namespaces (netns), but
> > users are moving internal ports to other namespaces.  Although packets
> > are still flowing, the daemon fails to find out basic port information,
> > like if it is UP or DOWN, for instance.
> >
> > This patchset rely on a new kernel vport API recently accepted to find
> > out the new network namespace ID of a bridge's port. This information
> > along with the port's name recorded in the database is used to match the
> > corresponding netlink messages.
> >
> > This patchset also leverages another kernel API that allows the daemon
> > to listen to all netlink messages from all netns which has an ID assigned
> > into it.  This and the previous change allows the userspace to track ports
> > in other network namespaces.
> >
> > If any of the APIs aren't available, it falls back to the older APIs to
> > not break backwards compatibility.
> >
> >
> > Flavio Leitner (8):
> >    netlink: provide network namespace id from a msg.
> >    netdev-linux: initialize netns as invalid.
> >    vport: retrieve the netnsid if available.
> >    netdev: update device info only if netns matches.
> >    netdev-linux: use netlink to update netdev.
> >    netlink linux: enable listening to all nsids
> >    nlmon: added netns support.
> >    netdev-linux: fail ops not supporting remote netns.
> >
> >   configure.ac                                      |   3 +-
> >   datapath/linux/compat/include/linux/openvswitch.h |   2 +
> >   lib/automake.mk                                   |   1 +
> >   lib/daemon-unix.c                                 |   3 +-
> >   lib/daemon.man                                    |   6 +-
> >   lib/daemon.xml                                    |   8 +-
> >   lib/dpif-netlink.c                                |  12 +-
> >   lib/dpif-netlink.h                                |   2 +
> >   lib/netdev-linux.c                                | 314 
> > ++++++++++++++++++++--
> >   lib/netlink-notifier.c                            |   2 +-
> >   lib/netlink-protocol.h                            |   6 +
> >   lib/netlink-socket.c                              |  80 +++++-
> >   lib/netlink-socket.h                              |   6 +-
> >   lib/netns.h                                       | 119 ++++++++
> >   tests/ofproto-macros.at                           |   1 +
> >   tests/ovn-controller-vtep.at                      |   1 +
> >   utilities/nlmon.c                                 |   9 +-
> >   17 files changed, 531 insertions(+), 44 deletions(-)
> >   create mode 100644 lib/netns.h
> >  
> 
> Besides one little nit in patch 3 it all looks good.  I'll let someone 
> who knows the namespace code
> better than I give it an ack but...
> 
> Reviewed-by: Greg Rose <[email protected]>
> Tested-by: Greg Rose <[email protected]>

Thanks for the review and tests!

Jiri is busy and he works inside of the kernel so maybe someone else
can review?

-- 
Flavio
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