ca273dc953
This gives a lot of operational problems later. It's definitely reasonable
to be able to create tap interfaces in other namespaces, and this is
still possible (see below for syntax).
However, changing the runtime netns makes the netlink listener much more
complicated because it will have to listen on not just one netns, but all
of them, for netlink updates.
So, for now, let's remove the ability to set the namespace in the API.
Still possible:
- set at startup.conf in lcpng { netns <x> }
- force creating in 'lcpng create ... netns <x>'
This will nudge folks to create one singular namespace (say,
'dataplane', in the startup.conf), and then handle all netlink messages
in that namespace only.
This code was taken from VPP's src/plugins/linux-cp/ directory, originally by: Signed-off-by: Neale Ranns nranns@cisco.com Signed-off-by: Matthew Smith mgsmith@netgate.com Signed-off-by: Jon Loeliger jdl@netgate.com Signed-off-by: Pim van Pelt pim@ipng.nl Signed-off-by: Neale Ranns neale@graphiant.com
See previous work: https://gerrit.fd.io/r/c/vpp/+/30759 (interface mirroring) https://gerrit.fd.io/r/c/vpp/+/31122 (netlink listener)
It's intended to be re-submitted for review as a cleanup/rewrite of the existing Linux CP interface mirror and netlink syncer.