Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux (Ubuntu Bionic)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1860987
Title:
openvswitch: same tcp session encapsulated with different udp src port
for ovs vxlan tunnel
Status in linux package in Ubuntu:
Fix Released
Status in openvswitch package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
Confirmed
Status in openvswitch source package in Bionic:
Triaged
Status in linux source package in Focal:
Confirmed
Status in openvswitch source package in Focal:
Fix Released
Status in linux source package in Groovy:
Fix Released
Status in openvswitch source package in Groovy:
Fix Released
Status in linux source package in Hirsute:
Fix Released
Status in openvswitch source package in Hirsute:
Fix Released
Status in linux source package in Impish:
Fix Released
Status in openvswitch source package in Impish:
Fix Released
Bug description:
[SRU Justification]
[Impact]
Packets encapsulated into a vxlan tunnel with openvswitch don't have
the same udp source port for the first packet and the following ones
of the same TCP flow in a DOCKER scenario usecase.
In fact, when using the kernel datapath, the upcall don't include skb hash
info relatived. As VXLAN module uses
the skb hash to select UDP src port, the source port is different for the
first packet.
More information can be found here:
https://mail.openvswitch.org/pipermail/ovs-dev/2019-October/364062.html
This has been fixed in the next release openvswitch 2.13 by the following
upstream commits:
- 0442bfb11d6ccb ("ofproto-dpif-upcall: Echo HASH attribute back to
datapath.")
- c4d8a4e0399910 ("ofproto-dpif: Fix using uninitialized execute hash.")
- 924d94a695a6ca ("ofproto-dpif-upcall: Fix using uninitialized upcall hash.")
https://github.com/openvswitch/ovs/commit/0442bfb11d6ccbf11754ef1d6de603b970465302
https://github.com/openvswitch/ovs/commit/c4d8a4e039991030c1298dbd1335d209cb437875
https://github.com/openvswitch/ovs/commit/924d94a695a6ca54b83d4bd42ec196ba53947c6d
The bug exists since the beginning of vxlan support in openvswitch.
== Fix ==
Backport the requested patches to Focal (5.4), Disco (5.0), Bionic (4.15) and
Xenial (4.4).
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