** Changed in: linux (Ubuntu)
       Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1792209

Title:
  net: hns: Avoid hang when link is changed while handling packets

Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Bionic:
  In Progress

Bug description:
  [Impact]
  If an admin uses ethtool to change the link speed or duplex setting while the 
hardware is still processing packets, a hardware hang may result.

  [Test Case]
  While traffic is in-progress, use ethtool to change link speed/duplex.

  [Fix]
  Fixes have been applied upstream:
  455c4401fe7a5 net: hns: add netif_carrier_off before change speed and duplex
  31fabbee8f5c6 net: hns: add the code for cleaning pkt in chip

  [Regression Risk]
  The only Ubuntu-supported system that uses this driver is the HiSilicon D05 
board, on which the fix was explicitly tested.

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