group.of.nepali.translators team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Thanks for the update, Chris.

** No longer affects: linux (Ubuntu Trusty)

** No longer affects: linux (Ubuntu Vivid)

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https://bugs.launchpad.net/bugs/1636656

Title:
  [Hyper-V] netvsc: fix incorrect receive checksum offloading

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Yakkety:
  Fix Committed

Bug description:
  The Hyper-V netvsc driver was looking at the incorrect status bits
  in the checksum info. It was setting the receive checksum unnecessary
  flag based on the IP header checksum being correct. The checksum
  flag is skb is about TCP and UDP checksum status. Because of this
  bug, any packet received with bad TCP checksum would be passed
  up the stack and to the application causing data corruption.
  The problem is reproducible via netcat and netem.

  This had a side effect of not doing receive checksum offload
  on IPv6. The driver was also also always doing checksum offload
  independent of the checksum setting done via ethtool.

  Signed-off-by: Stephen Hemminger <sthemmin@xxxxxxxxxxxxx>

  https://patchwork.ozlabs.org/patch/685660/

  When this patch is committed I will include the commit ID in this bug.

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