netdev - [patch net-next 0/3] net: introduce per-netns netdevice notifiers and use them in mlxsw

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Message-Id: <20190930081511.26915-1-jiri@resnulli.us>
Date:   Mon, 30 Sep 2019 10:15:08 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, idosch@...lanox.com, pabeni@...hat.com,
        edumazet@...gle.com, petrm@...lanox.com, sd@...asysnail.net,
        f.fainelli@...il.com, stephen@...workplumber.org,
        mlxsw@...lanox.com
Subject: [patch net-next 0/3] net: introduce per-netns netdevice notifiers and use them in mlxsw

From: Jiri Pirko <jiri@...lanox.com>

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 also a preparation for upcoming patchset "devlink: allow devlink
instances to change network namespace". This resolves deadlock during
reload mlxsw into initial netns made possible by
328fbe747ad4 ("net: Close race between {un, }register_netdevice_notifier() and setup_net()/cleanup_net()").

Jiri Pirko (3):
  net: push loops and nb calls into helper functions
  net: introduce per-netns netdevice notifiers
  mlxsw: spectrum: Use per-netns netdevice notifier registration

 .../net/ethernet/mellanox/mlxsw/spectrum.c    |   9 +-
 include/linux/netdevice.h                     |   6 +
 include/net/net_namespace.h                   |   6 +-
 net/core/dev.c                                | 176 +++++++++++++++---
 4 files changed, 165 insertions(+), 32 deletions(-)

-- 
2.21.0