Mike:

UDP tests in my vrf unit test suite are failing. git bisect points to:


dsa@kenny:~/kernel-2.git$ git bisect good
e858fae2b0b8f41f0bed2cdffde25e7c97da38a7 is the first bad commit
commit e858fae2b0b8f41f0bed2cdffde25e7c97da38a7
Author: Mike Rapoport <r...@linux.vnet.ibm.com>
Date:   Wed Jun 8 16:09:21 2016 +0300

    virtio_net: use common code for virtio_net_hdr and skb GSO conversion

Replace open coded conversion between virtio_net_hdr to skb GSO info with
    virtio_net_hdr_{from,to}_skb

    Signed-off-by: Mike Rapoport <r...@linux.vnet.ibm.com>
    Signed-off-by: David S. Miller <da...@davemloft.net>

:040000 040000 7e53f434e2d3a50ac685ce153dd92fc1a207de0e 470864c731ae7dd680f9807d2a1a359c715a4270 M drivers


On console I get the following:

[   80.414134] skbuff: bad partial csum: csum=34/6 len=40
[   80.416105] eth1: bad gso: type: 0, size: 0


Nothing special on the setup -- shell scripts and qemu commands that have worked fine for years. Host OS is debian/jessie:

dsa@kenny:dsa-ns:~$ /usr/bin/qemu-system-x86_64 --version
QEMU emulator version 2.1.2 (Debian 1:2.1+dfsg-12+deb8u6), Copyright (c) 2003-2008 Fabrice Bellard

Networking arg:

-netdev type=tap,vhost=on,ifname=vm01-eth1,script=no,downscript=no,id=netdev1
-device virtio-net-pci,mac=02:e0:f9:1c:b9:74,netdev=netdev1,romfile=

tap device is connected to a bridge.

David

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