[ovs-git] [openvswitch/ovs] d59aaf: ovn: Fix ARP request flow for unknown IP in lroute...

[GitHub]

  Branch: refs/heads/branch-2.6
  Home:   https://github.com/openvswitch/ovs
  Commit: d59aaf015c02eae03a19b055dee1c96af3e47903
      https://github.com/openvswitch/ovs/commit/d59aaf015c02eae03a19b055dee1c96af3e47903
  Author: Chandra S Vejendla <csvejend at us.ibm.com>
  Date:   2016-08-16 (Tue, 16 Aug 2016)

  Changed paths:
    M ovn/northd/ovn-northd.8.xml
    M ovn/northd/ovn-northd.c
    M tests/ovn.at

  Log Message:
  -----------
  ovn: Fix ARP request flow for unknown IP in lrouter

TPA in arp requests generated for unknown MAC-to-IP bindings is currently set
to DST_IP of the original packet. These arps will not be resolved when the
DST_IP is rechable via the default gateway. This patch fixes the issue by
setting the TPA to reg0. In routing stage reg0 is set to IP of the default
gateway when the packet has to go through the default gateway, otherwise reg0
is set to the DST_IP of the original packet.

Signed-off-by: Chandra Sekhar Vejendla <csvejend at us.ibm.com>
Signed-off-by: Gurucharan Shetty <guru at ovn.org>