[ovs-dev] [PATCH ovn] Fix virtual port binding when the parents are scheduled in the same chassis

numans at ovn.org numans at ovn.org
Wed Oct 16 17:00:18 UTC 2019


From: Numan Siddique <numans at ovn.org>

If a virtual port has 2 parents and if both of them are scheduled
on the same chassis, then virtual port binding doesn't work.

For virtual port binding we have the below logical flows:
inport == p1 && !is_chassis_resident("vip-port") && arp .. actions=bind_vport(vip-port); next;
inport == p2 && !is_chassis_resident("vip-port") && arp .. actions=bind_vport(vip-port); next;

Since we have !is_chassis_resident, as soon as p1 binds the port, the corresponding OF flows
for both the logical flows above are deleted. Because of this, when p2 becomes the
parent of vip-port it can't bind it.

This patch fixes this issue by removing this condition.

Reported-at: https://bugzilla.redhat.com/show_bug.cgi?id=1762341
Signed-off-by: Numan Siddique <numans at ovn.org>
---
 northd/ovn-northd.8.xml |  2 +-
 northd/ovn-northd.c     |  3 +--
 tests/ovn.at            | 39 ++++++++++++++++++++++++++++++++-------
 3 files changed, 34 insertions(+), 10 deletions(-)

diff --git a/northd/ovn-northd.8.xml b/northd/ovn-northd.8.xml
index b5dfcd183..d3e0e5ef2 100644
--- a/northd/ovn-northd.8.xml
+++ b/northd/ovn-northd.8.xml
@@ -580,7 +580,7 @@
           column with the match
         </p>
         <pre>
-<code>inport == <var>P</var> &amp;&amp; !is_chassis_resident(<var>V</var>) &amp;&amp; ((arp.op == 1 &amp;&amp; arp.spa == <var>VIP</var> &amp;&amp; arp.tpa == <var>VIP</var>) || (arp.op == 2 &amp;&amp; arp.spa == <var>VIP</var>))</code>
+<code>inport == <var>P</var> &amp;&amp; &amp;&amp; ((arp.op == 1 &amp;&amp; arp.spa == <var>VIP</var> &amp;&amp; arp.tpa == <var>VIP</var>) || (arp.op == 2 &amp;&amp; arp.spa == <var>VIP</var>))</code>
         </pre>
 
         <p>
diff --git a/northd/ovn-northd.c b/northd/ovn-northd.c
index d0844dd64..ea8ad7c2d 100644
--- a/northd/ovn-northd.c
+++ b/northd/ovn-northd.c
@@ -5250,11 +5250,10 @@ build_lswitch_flows(struct hmap *datapaths, struct hmap *ports,
 
                 ds_clear(&match);
                 ds_put_format(&match, "inport == \"%s\" && "
-                              "!is_chassis_resident(%s) && "
                               "((arp.op == 1 && arp.spa == %s && "
                               "arp.tpa == %s) || (arp.op == 2 && "
                               "arp.spa == %s))",
-                              vparent, op->json_key, virtual_ip, virtual_ip,
+                              vparent, virtual_ip, virtual_ip,
                               virtual_ip);
                 ds_clear(&actions);
                 ds_put_format(&actions,
diff --git a/tests/ovn.at b/tests/ovn.at
index d14136748..6bdb9e8ed 100644
--- a/tests/ovn.at
+++ b/tests/ovn.at
@@ -15637,7 +15637,7 @@ ovn-nbctl lsp-set-addresses sw0-vir "50:54:00:00:00:10 10.0.0.10"
 ovn-nbctl lsp-set-port-security sw0-vir "50:54:00:00:00:10 10.0.0.10"
 ovn-nbctl lsp-set-type sw0-vir virtual
 ovn-nbctl set logical_switch_port sw0-vir options:virtual-ip=10.0.0.10
-ovn-nbctl set logical_switch_port sw0-vir options:virtual-parents=sw0-p1,sw0-p2
+ovn-nbctl set logical_switch_port sw0-vir options:virtual-parents=sw0-p1,sw0-p2,sw0-p3
 
 ovn-nbctl lsp-add sw0 sw0-p1
 ovn-nbctl lsp-set-addresses sw0-p1 "50:54:00:00:00:03 10.0.0.3"
@@ -15649,7 +15649,7 @@ ovn-nbctl lsp-set-port-security sw0-p2 "50:54:00:00:00:04 10.0.0.4 10.0.0.10"
 
 ovn-nbctl lsp-add sw0 sw0-p3
 ovn-nbctl lsp-set-addresses sw0-p3 "50:54:00:00:00:05 10.0.0.5"
-ovn-nbctl lsp-set-port-security sw0-p3 "50:54:00:00:00:05 10.0.0.5"
+ovn-nbctl lsp-set-port-security sw0-p3 "50:54:00:00:00:05 10.0.0.5 10.0.0.10"
 
 # Create the second logical switch with one port
 ovn-nbctl ls-add sw1
@@ -15680,8 +15680,9 @@ ovn-nbctl --wait=hv sync
 ovn-sbctl dump-flows sw0 | grep ls_in_arp_rsp | grep bind_vport > lflows.txt
 
 AT_CHECK([cat lflows.txt], [0], [dnl
-  table=11(ls_in_arp_rsp      ), priority=100  , match=(inport == "sw0-p1" && !is_chassis_resident("sw0-vir") && ((arp.op == 1 && arp.spa == 10.0.0.10 && arp.tpa == 10.0.0.10) || (arp.op == 2 && arp.spa == 10.0.0.10))), action=(bind_vport("sw0-vir", inport); next;)
-  table=11(ls_in_arp_rsp      ), priority=100  , match=(inport == "sw0-p2" && !is_chassis_resident("sw0-vir") && ((arp.op == 1 && arp.spa == 10.0.0.10 && arp.tpa == 10.0.0.10) || (arp.op == 2 && arp.spa == 10.0.0.10))), action=(bind_vport("sw0-vir", inport); next;)
+  table=11(ls_in_arp_rsp      ), priority=100  , match=(inport == "sw0-p1" && ((arp.op == 1 && arp.spa == 10.0.0.10 && arp.tpa == 10.0.0.10) || (arp.op == 2 && arp.spa == 10.0.0.10))), action=(bind_vport("sw0-vir", inport); next;)
+  table=11(ls_in_arp_rsp      ), priority=100  , match=(inport == "sw0-p2" && ((arp.op == 1 && arp.spa == 10.0.0.10 && arp.tpa == 10.0.0.10) || (arp.op == 2 && arp.spa == 10.0.0.10))), action=(bind_vport("sw0-vir", inport); next;)
+  table=11(ls_in_arp_rsp      ), priority=100  , match=(inport == "sw0-p3" && ((arp.op == 1 && arp.spa == 10.0.0.10 && arp.tpa == 10.0.0.10) || (arp.op == 2 && arp.spa == 10.0.0.10))), action=(bind_vport("sw0-vir", inport); next;)
 ])
 
 ovn-sbctl dump-flows lr0 | grep lr_in_arp_resolve | grep "reg0 == 10.0.0.10" \
@@ -15729,6 +15730,29 @@ AT_CHECK([cat lflows.txt], [0], [dnl
   table=11(lr_in_arp_resolve  ), priority=100  , match=(outport == "lr0-sw0" && reg0 == 10.0.0.10), action=(eth.dst = 50:54:00:00:00:03; next;)
 ])
 
+# From sw0-p3 send GARP for 10.0.0.10. hv1 should claim sw0-vir
+# and sw0-p3 should be its virtual_parent.
+eth_src=505400000005
+eth_dst=ffffffffffff
+spa=$(ip_to_hex 10 0 0 10)
+tpa=$(ip_to_hex 10 0 0 10)
+send_garp 1 2 $eth_src $eth_dst $spa $tpa
+
+OVS_WAIT_UNTIL([test x$(ovn-sbctl --bare --columns chassis find port_binding \
+logical_port=sw0-vir) = x$hv1_ch_uuid], [0], [])
+
+OVS_WAIT_UNTIL([test x$(ovn-sbctl --bare --columns virtual_parent find port_binding \
+logical_port=sw0-vir) = xsw0-p3])
+
+ovn-sbctl dump-flows lr0 | grep lr_in_arp_resolve | grep "reg0 == 10.0.0.10" \
+> lflows.txt
+
+# There should be an arp resolve flow to resolve the virtual_ip with the
+# sw0-p2's MAC.
+AT_CHECK([cat lflows.txt], [0], [dnl
+  table=11(lr_in_arp_resolve  ), priority=100  , match=(outport == "lr0-sw0" && reg0 == 10.0.0.10), action=(eth.dst = 50:54:00:00:00:05; next;)
+])
+
 # send the garp from sw0-p2 (in hv2). hv2 should claim sw0-vir
 # and sw0-p2 shpuld be its virtual_parent.
 eth_src=505400000004
@@ -15747,7 +15771,7 @@ ovn-sbctl dump-flows lr0 | grep lr_in_arp_resolve | grep "reg0 == 10.0.0.10" \
 > lflows.txt
 
 # There should be an arp resolve flow to resolve the virtual_ip with the
-# sw0-p2's MAC.
+# sw0-p3's MAC.
 AT_CHECK([cat lflows.txt], [0], [dnl
   table=11(lr_in_arp_resolve  ), priority=100  , match=(outport == "lr0-sw0" && reg0 == 10.0.0.10), action=(eth.dst = 50:54:00:00:00:04; next;)
 ])
@@ -15792,7 +15816,7 @@ AT_CHECK([cat lflows.txt], [0], [dnl
 ])
 
 # Now send arp reply from sw0-p2. hv2 should claim sw0-vir
-# and sw0-p2 shpuld be its virtual_parent.
+# and sw0-p2 should be its virtual_parent.
 eth_src=505400000004
 eth_dst=ffffffffffff
 spa=$(ip_to_hex 10 0 0 10)
@@ -15835,7 +15859,8 @@ ovn-nbctl --wait=hv set logical_switch_port sw0-vir options:virtual-ip=10.0.0.10
 ovn-sbctl dump-flows sw0 | grep ls_in_arp_rsp | grep bind_vport > lflows.txt
 
 AT_CHECK([cat lflows.txt], [0], [dnl
-  table=11(ls_in_arp_rsp      ), priority=100  , match=(inport == "sw0-p1" && !is_chassis_resident("sw0-vir") && ((arp.op == 1 && arp.spa == 10.0.0.10 && arp.tpa == 10.0.0.10) || (arp.op == 2 && arp.spa == 10.0.0.10))), action=(bind_vport("sw0-vir", inport); next;)
+  table=11(ls_in_arp_rsp      ), priority=100  , match=(inport == "sw0-p1" && ((arp.op == 1 && arp.spa == 10.0.0.10 && arp.tpa == 10.0.0.10) || (arp.op == 2 && arp.spa == 10.0.0.10))), action=(bind_vport("sw0-vir", inport); next;)
+  table=11(ls_in_arp_rsp      ), priority=100  , match=(inport == "sw0-p3" && ((arp.op == 1 && arp.spa == 10.0.0.10 && arp.tpa == 10.0.0.10) || (arp.op == 2 && arp.spa == 10.0.0.10))), action=(bind_vport("sw0-vir", inport); next;)
 ])
 
 ovn-nbctl --wait=hv remove logical_switch_port sw0-vir options virtual-parents
-- 
2.21.0



More information about the dev mailing list