Add support for fragmentation
Bug #1838405 reported by
Lucas Alvares Gomes
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
networking-ovn |
Fix Released
|
Medium
|
Lucas Alvares Gomes |
Bug Description
Core OVN now supports fragmentation (see commit message [0] for more details), networking-ovn should add supports for it.
Reported upstream at: https:/
Reported downstream at: https:/
Changed in networking-ovn: | |
assignee: | nobody → Lucas Alvares Gomes (lucasagomes) |
tags: | added: rfe |
Changed in networking-ovn: | |
status: | New → Confirmed |
importance: | Undecided → Medium |
Changed in networking-ovn: | |
status: | Confirmed → In Progress |
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Reviewed: https:/ /review. opendev. org/671766 /git.openstack. org/cgit/ openstack/ networking- ovn/commit/ ?id=d7e950002d7 bcf1bbebab5cd28 9b59d65366492e
Committed: https:/
Submitter: Zuul
Branch: master
commit d7e950002d7bcf1 bbebab5cd289b59 d65366492e
Author: Lucas Alvares Gomes <email address hidden>
Date: Fri Jul 19 16:22:24 2019 +0100
OVN to emit ICMP "fragmentation needed" packets
A new configuration option called "ovn_emit_ need_to_ frag" has been added
and defaults to False. Reason being, it requires a specific kernel
version for it to work (upstream >= 5.2). It's also possible to find out
if OVN supports that operation by running the following command as root:
$ ovs-appctl -t ovs-vswitchd dpif/show- dp-features br-int
(check for "Check pkt length action: Yes").
WARNING: Enabling this option without kernel support will result in a
real performance degradation.
At earlier versions of this patch we thought about having networking-ovn
to discover if this option is supported or not (by issuing that
ovs-appctl command above) but, since networking-ovn doesn't run in the
network nodes we thought that an upper level tool (such as puppet-ovn or
TripleO) could do a better job at checking for it and configuring things
accordingly.
Closes-Bug: #1838405 cd5e01990acacd5 99ced3bbd91
Change-Id: I089f95b40803a6
Signed-off-by: Lucas Alvares Gomes <email address hidden>