Hi,

I know this change is not easy to review, but at the same time
we are getting close to the release date.  I am afraid that
delaying the acceptance will reduce its exposure and testing.

Please let me know the questions you might have to help you
reviewing this patchset.

Thanks,
fbl



On Thu, Dec 07, 2017 at 12:22:18AM -0200, 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.
> 
> 
> ChangeLog:
> 
> * V3:
>   - Fixed long line (Greg)
>   - Rewrote assuming that the kernel will not send negative
>     numbers as valid network namespace id. (Ben, Flavio, Jiri)
> 
> * V2:
>   - report and close unexpected file descriptors (Ben)
> 
> Flavio Leitner (6):
>   netlink: provide network namespace id from a msg.
>   netnsid: update device only if netnsid 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                                |  14 +-
>  lib/dpif-netlink.h                                |   1 +
>  lib/netdev-linux.c                                | 312 
> ++++++++++++++++++++--
>  lib/netlink-notifier.c                            |   2 +-
>  lib/netlink-protocol.h                            |   6 +
>  lib/netlink-socket.c                              |  80 +++++-
>  lib/netlink-socket.h                              |   4 +-
>  lib/netnsid.h                                     | 139 ++++++++++
>  tests/ofproto-macros.at                           |   1 +
>  tests/ovn-controller-vtep.at                      |   1 +
>  utilities/nlmon.c                                 |  10 +-
>  17 files changed, 549 insertions(+), 44 deletions(-)
>  create mode 100644 lib/netnsid.h
> 
> -- 
> 2.14.3
> 
> _______________________________________________
> dev mailing list
> d...@openvswitch.org
> https://mail.openvswitch.org/mailman/listinfo/ovs-dev

-- 
Flavio

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