[PATCH v2 0/5] net/failsafe: fixes for sub-device removal and configuration

[Sandeep Penigalapati]

This series collects fixes for the fail-safe PMD found while testing
live migration of a VF-backed sub-device (iavf) paired with a virtio-net
standby sub-device.

- double release of the sub-device port on hot-unplug;
- NULL queue-release op on sub-devices that do not implement it;
- MAC address pool size off-by-one and replay of zeroed MAC slots;
- unsupported link-status control (-ENOTSUP) treated as fatal;
- sub-device removal not detected without the RMV interrupt (e.g. VFIO
  device release), now handled through a bus device-event callback.

v2:
- patch 2/5: add an explicit ETH(sdev) != NULL check before dereferencing
  in fs_rx_queue_release()/fs_tx_queue_release().
- patch 5/5: clarify in a comment that a secondary process detects the
  removal via the shared sub_device state checked by fs_rx_unsafe()/
  fs_tx_unsafe() in the burst path.


Sandeep Penigalapati (5):
  net/failsafe: fix double release of sub-device port
  net/failsafe: fix queue release without sub-device op
  net/failsafe: fix MAC address pool size and replay
  net/failsafe: ignore unsupported link status update
  net/failsafe: detect sub-device removal via device event

 drivers/net/failsafe/failsafe_ether.c   | 40 ++++++++++--
 drivers/net/failsafe/failsafe_ops.c     | 29 ++++++++-
 drivers/net/failsafe/failsafe_private.h | 13 ++--
 drivers/net/failsafe/failsafe_rxtx.c    | 83 +------------------------
 4 files changed, 67 insertions(+), 98 deletions(-)

-- 
2.34.1