x/vmware-nsx
Code Issues Proposed changes

GRE tunnels should include local_ip.

Browse Source 
This addresses the issue of having one or more multi-homed host.

Because you may only specify one local IP for a quantum agent, and
other hosts could be routed across different subnets (even for small
installations, for various reasons), it's important to also specify
the used local_ip when setting up the GRE tunnels. As long as the
address is routable on both ends, this will work. If the local_ip is
not specified, then traffic will mysteriously be dropped on one end
where the IP does not match the expected IP in the GRE tunnel.

Bug: https://bugs.launchpad.net/quantum/+bug/1184696

Change-Id: I5d612bf9e4f6652af8b155cdd1748d73ac4539ff
Signed-off-by: Adin Scannell <adin@scannell.ca>
This commit is contained in:
Adin Scannell 2013-05-27 13:21:42 -04:00
parent a8e4cb916c
commit c98ec24961
4 changed files with 17 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
neutron/agent/linux/ovs_lib.py
View File

@ -165,7 +165,7 @@ class OVSBridge:
flow_str = ",".join(flow_expr_arr)
self.run_ofctl("del-flows", [flow_str])
def add_tunnel_port(self, port_name, remote_ip,
def add_tunnel_port(self, port_name, remote_ip, local_ip,
tunnel_type=constants.TYPE_GRE,
vxlan_udp_port=constants.VXLAN_UDP_PORT):
self.run_vsctl(["add-port", self.br_name, port_name])
@ -178,6 +178,8 @@ class OVSBridge:
vxlan_udp_port)
self.set_db_attribute("Interface", port_name, "options:remote_ip",
remote_ip)
self.set_db_attribute("Interface", port_name, "options:local_ip",
local_ip)
self.set_db_attribute("Interface", port_name, "options:in_key", "flow")
self.set_db_attribute("Interface", port_name, "options:out_key",
"flow")

5
neutron/plugins/openvswitch/agent/ovs_neutron_agent.py
View File

@ -302,8 +302,8 @@ class OVSNeutronAgent(sg_rpc.SecurityGroupAgentRpcCallbackMixin):
if tunnel_ip == self.local_ip:
return
tun_name = '%s-%s' % (tunnel_type, tunnel_id)
self.tun_br.add_tunnel_port(tun_name, tunnel_ip, tunnel_type,
self.vxlan_udp_port)
self.tun_br.add_tunnel_port(tun_name, tunnel_ip, self.local_ip,
tunnel_type, self.vxlan_udp_port)
def create_rpc_dispatcher(self):
'''Get the rpc dispatcher for this manager.
@ -713,6 +713,7 @@ class OVSNeutronAgent(sg_rpc.SecurityGroupAgentRpcCallbackMixin):
tun_name = '%s-%s' % (tunnel_type, tunnel_id)
self.tun_br.add_tunnel_port(tun_name,
tunnel['ip_address'],
self.local_ip,
tunnel_type,
self.vxlan_udp_port)
except Exception as e:

12
neutron/tests/unit/openvswitch/test_ovs_lib.py
View File

@ -185,7 +185,8 @@ class OVS_Lib_Test(base.BaseTestCase):
def test_add_tunnel_port(self):
pname = "tap99"
ip = "9.9.9.9"
local_ip = "1.1.1.1"
remote_ip = "9.9.9.9"
ofport = "6"
utils.execute(["ovs-vsctl", self.TO, "add-port",
@ -193,7 +194,10 @@ class OVS_Lib_Test(base.BaseTestCase):
utils.execute(["ovs-vsctl", self.TO, "set", "Interface",
pname, "type=gre"], root_helper=self.root_helper)
utils.execute(["ovs-vsctl", self.TO, "set", "Interface",
pname, "options:remote_ip=" + ip],
pname, "options:remote_ip=" + remote_ip],
root_helper=self.root_helper)
utils.execute(["ovs-vsctl", self.TO, "set", "Interface",
pname, "options:local_ip=" + local_ip],
root_helper=self.root_helper)
utils.execute(["ovs-vsctl", self.TO, "set", "Interface",
pname, "options:in_key=flow"],
@ -206,7 +210,9 @@ class OVS_Lib_Test(base.BaseTestCase):
root_helper=self.root_helper).AndReturn(ofport)
self.mox.ReplayAll()
self.assertEqual(self.br.add_tunnel_port(pname, ip), ofport)
self.assertEqual(
self.br.add_tunnel_port(pname, remote_ip, local_ip),
ofport)
self.mox.VerifyAll()
def test_add_patch_port(self):

3
neutron/tests/unit/openvswitch/test_ovs_tunnel.py
View File

@ -346,7 +346,8 @@ class TunnelTest(base.BaseTestCase):
self.mox.VerifyAll()
def testTunnelUpdate(self):
self.mock_tun_bridge.add_tunnel_port('gre-1', '10.0.10.1', 'gre', 4789)
self.mock_tun_bridge.add_tunnel_port('gre-1', '10.0.10.1', '10.0.0.1',
'gre', 4789)
self.mox.ReplayAll()
a = ovs_neutron_agent.OVSNeutronAgent(self.INT_BRIDGE,
self.TUN_BRIDGE,