ACK: [SRU][F:linux-bluefield][PATCH 0/4] Allow devlink instances to change network namespace

[Bartlomiej Zolnierkiewicz]

Acked-by: Bartlomiej Zolnierkiewicz <bartlomiej.zolnierkiewicz at canonical.com>

On Fri, Jan 13, 2023 at 7:10 PM Bodong Wang <bodong at nvidia.com> wrote:
>
> Some drivers, like mlxsw, are not interested in notifications coming in
> for netdevices from other network namespaces. So introduce per-netns
> notifiers and allow to reduce overhead by listening only for
> notifications from the same netns. This is done by first two patches.
>
> After we have per-net notifier, which allows to get only
> notifications relevant to particular network namespace. That is enough
> for drivers that have netdevs local in a particular namespace (cannot
> move elsewhere).
>
> However if netdev can change namespace, per-net notifier cannot be used.
> Introduce dev_net variant that is basically per-net notifier with an
> extension that re-registers the per-net notifier upon netdev namespace
> change. Basically the per-net notifier follows the netdev into
> namespace. This is done by the last two patches.
>
> Jiri Pirko (4):
>   net: push loops and nb calls into helper functions
>   net: introduce per-netns netdevice notifiers
>   net: push code from net notifier reg/unreg into helpers
>   net: introduce dev_net notifier register/unregister variants
>
>  include/linux/netdevice.h   |  23 ++++
>  include/net/net_namespace.h |   5 +-
>  net/core/dev.c              | 238 +++++++++++++++++++++++++++++++-----
>  3 files changed, 237 insertions(+), 29 deletions(-)
>