Change in osmocom-bb[master]: layer23: Introduce netdev.{c,h}

Attention is currently required from: laforge. pespin has posted comments on this change. ( https://gerrit.osmocom.org/c/osmocom-bb/+/30993 )

Change subject: layer23: Introduce netdev.{c,h} ......................................................................

Patch Set 4:

(1 comment)

Patchset:

PS4:

I'm not sure if we really want to import all that legacy code from osmo-ggsn, which back then suppor […]

We can later on move that to libosmocore or libosmonetif if we want, but for now I'd like to keep it here.

Regarding dropping non-linux stuff, I'm fine dropping it but I'd prefer doing that as a followup patch since in this one I'm mostly importing stuff as much as is as it can be.