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 <csvej...@us.ibm.com>
---
ovn/northd/ovn-northd.8.xml | 1 +
ovn/northd/ovn-northd.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/ovn/northd/ovn-northd.8.xml b/ovn/northd/ovn-northd.8.xml
index 6bc83ea..0a49b11 100644
--- a/ovn/northd/ovn-northd.8.xml
+++ b/ovn/northd/ovn-northd.8.xml
@@ -1011,6 +1011,7 @@ icmp4 {
arp {
eth.dst = ff:ff:ff:ff:ff:ff;
arp.spa = reg1;
+ arp.tpa = reg0;
arp.op = 1; /* ARP request. */
output;
};
diff --git a/ovn/northd/ovn-northd.c b/ovn/northd/ovn-northd.c
index f4b4435..afcd7fd 100644
--- a/ovn/northd/ovn-northd.c
+++ b/ovn/northd/ovn-northd.c
@@ -2693,6 +2693,7 @@ build_lrouter_flows(struct hmap *datapaths, struct hmap
*ports,
"arp { "
"eth.dst = ff:ff:ff:ff:ff:ff; "
"arp.spa = reg1; "
+ "arp.tpa = reg0; "
"arp.op = 1; " /* ARP request */
"output; "
"};");
--
2.6.1
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