For Trusty, I also applied one prereq patch due to build failures. The
prereq patch I added was:
commit e3d605ed441cf4d113f9a1cf9e1b3f7cabe0d781
Author: KY Srinivasan <k...@microsoft.com>
Date: Sat Mar 8 19:23:16 2014 -0800
Drivers: net: hyperv: Enable receive side IP checksum offload
This prereq patch was not a clean cherry pick, so I had to backport it.
I'll review my backport, and see if it was done properly.
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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 Trusty:
In Progress
Status in linux source package in Vivid:
In Progress
Status in linux source package in Xenial:
In Progress
Status in linux source package in Yakkety:
In Progress
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 <sthem...@microsoft.com>
https://patchwork.ozlabs.org/patch/685660/
When this patch is committed I will include the commit ID in this bug.
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