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

[Tim Gardner]

On 1/13/23 11:09 AM, Bodong Wang 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(-)
> 
Acked-by: Tim Gardner <tim.gardner at canonical.com>
-- 
-----------
Tim Gardner
Canonical, Inc