[ovs-build] Failed: ovsrobot/ovs#544 (series_94391 - 2525322)

[Travis CI]

Build Update for ovsrobot/ovs
-------------------------------------

Build: #544
Status: Failed

Duration: 41 mins and 44 secs
Commit: 2525322 (series_94391)
Author: Nitin Katiyar
Message: Avoid packet drop on LACP bond after link up

Problem:

========
During port DOWN->UP of link (slave) in a LACP bond, after receiving the
LACPDU with SYNC set for both actor and partner, the bond-slave remains
"disabled" until OVS main thread runs LACP state machine and eventually
"enables" the bond-slave. With this, we have observed delays in the order
of 350ms and packets are  dropped in OVS due to bond-admissibility check
(packets received on slave in "disabled" state are dropped).

Fix:
====
When a LACPDU is received, evaluate whether LACP slave can be enabled
(slave_may_enable()) and set LACP slave's may_enable from the datapath
thread itself. When may_enable = TRUE, it means L1 state is UP and
LACP-SYNC is done and it is waiting for the main thread to enable the
slave. Relax the check in bond_check_admissibility() to check for both
"enable" and "may_enable" of the LACP slave. This would avoid dropping
of packets until the main thread enables the slave from bundle_run().

Signed-off-by: Manohar Krishnappa Chidambaraswamy <manukc at gmail.com>
Co-authored-by: Manohar Krishnappa Chidambaraswamy <manukc at gmail.com>
Signed-off-by: Nitin Katiyar <nitin.katiyar at ericsson.com>
Signed-off-by: 0-day Robot <robot at bytheb.org>

View the changeset: https://github.com/ovsrobot/ovs/commit/25253220fb05

View the full build log and details: https://travis-ci.org/ovsrobot/ovs/builds/499103473?utm_medium=notification&utm_source=email

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