[PATCH net-next 0/6] net: hold instance lock around NETDEV_DOWN and NETDEV_GOING_DOWN

[Stanislav Fomichev <sdf.kernel@gmail.com>]

NETDEV_UP and NETDEV_REGISTER already run under the per-device
instance lock. The teardown side does not. Make it symmetric so
ops-locked drivers can rely on the lock being held in both
directions.

Stanislav Fomichev (6):
  net: hold instance lock around NETDEV_DOWN/GOING_DOWN
  net: dsa: hold instance lock on close-on-shutdown paths
  net: mtk_eth_soc: hold instance lock around DMA-device-swap close
  net: rtnetlink: take instance lock inside rtnl_configure_link
  net: require instance lock for NETDEV_DOWN/GOING_DOWN notifiers
  net: document NETDEV_UNREGISTER unlocked rationale

 Documentation/networking/netdevices.rst     | 10 ++++++++++
 drivers/net/ethernet/mediatek/mtk_eth_soc.c |  5 +++++
 net/core/dev.c                              |  5 +++++
 net/core/lock_debug.c                       |  4 ++--
 net/core/rtnetlink.c                        | 17 ++++++++++-------
 net/dsa/dsa.c                               | 20 +++++++++++++++++---
 net/dsa/user.c                              | 19 +++++++++++++++++--
 7 files changed, 66 insertions(+), 14 deletions(-)

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2.53.0-Meta