diff --git a/manila/share/drivers/service_instance.py b/manila/share/drivers/service_instance.py
index 30e11635e1..c670eca7e5 100644
--- a/manila/share/drivers/service_instance.py
+++ b/manila/share/drivers/service_instance.py
@@ -833,7 +833,8 @@ class NeutronNetworkHelper(BaseNetworkhelper):
 
         if router_id and subnet_id:
             ports = self.neutron_api.list_ports(
-                fields=['fixed_ips', 'device_id', 'device_owner'])
+                fields=['device_id', 'device_owner'],
+                fixed_ips=['subnet_id=%s' % subnet_id])
             # NOTE(vponomaryov): iterate ports to get to know whether current
             # subnet is used or not. We will not remove it from router if it
             # is used.
@@ -843,12 +844,10 @@ class NeutronNetworkHelper(BaseNetworkhelper):
                 # we know that it is VM. We continue only if both are 'True'.
                 if (port['device_id'] and
                         port['device_owner'].startswith('compute:')):
-                    for fixed_ip in port['fixed_ips']:
-                        if fixed_ip['subnet_id'] == subnet_id:
-                            # NOTE(vponomaryov): There are other share servers
-                            # exist that use this subnet. So, do not remove it
-                            # from router.
-                            return
+                    # NOTE(vponomaryov): There are other share servers
+                    # exist that use this subnet. So, do not remove it
+                    # from router.
+                    return
             try:
                 # NOTE(vponomaryov): there is no other share servers or
                 # some VMs that use this subnet. So, remove it from router.
diff --git a/manila/tests/share/drivers/test_service_instance.py b/manila/tests/share/drivers/test_service_instance.py
index 358f6847df..2ea1a4352c 100644
--- a/manila/tests/share/drivers/test_service_instance.py
+++ b/manila/tests/share/drivers/test_service_instance.py
@@ -1687,8 +1687,7 @@ class NeutronNetworkHelperTestCase(test.TestCase):
     def test_teardown_network_subnet_is_used(self):
         server_details = dict(subnet_id='foo', router_id='bar')
         fake_ports = [
-            {'fixed_ips': [{'subnet_id': server_details['subnet_id']}],
-             'device_id': 'fake_device_id',
+            {'device_id': 'fake_device_id',
              'device_owner': 'compute:foo'},
         ]
         instance = self._init_neutron_network_plugin()
@@ -1706,19 +1705,16 @@ class NeutronNetworkHelperTestCase(test.TestCase):
             service_instance.neutron.API.router_remove_interface.called)
         self.assertFalse(service_instance.neutron.API.update_subnet.called)
         service_instance.neutron.API.list_ports.assert_called_once_with(
-            fields=['fixed_ips', 'device_id', 'device_owner'])
+            fields=['device_id', 'device_owner'], fixed_ips=['subnet_id=foo'])
 
     def test_teardown_network_subnet_not_used(self):
         server_details = dict(subnet_id='foo', router_id='bar')
         fake_ports = [
-            {'fixed_ips': [{'subnet_id': server_details['subnet_id']}],
-             'device_id': 'fake_device_id',
+            {'device_id': 'fake_device_id',
              'device_owner': 'network:router_interface'},
-            {'fixed_ips': [{'subnet_id': 'bar' + server_details['subnet_id']}],
-             'device_id': 'fake_device_id',
+            {'device_id': 'fake_device_id',
              'device_owner': 'compute'},
-            {'fixed_ips': [{'subnet_id': server_details['subnet_id']}],
-             'device_id': '',
+            {'device_id': '',
              'device_owner': 'compute'},
         ]
         instance = self._init_neutron_network_plugin()
@@ -1737,13 +1733,12 @@ class NeutronNetworkHelperTestCase(test.TestCase):
         (service_instance.neutron.API.update_subnet.
             assert_called_once_with('foo', ''))
         service_instance.neutron.API.list_ports.assert_called_once_with(
-            fields=['fixed_ips', 'device_id', 'device_owner'])
+            fields=['device_id', 'device_owner'], fixed_ips=['subnet_id=foo'])
 
     def test_teardown_network_subnet_not_used_and_get_error_404(self):
         server_details = dict(subnet_id='foo', router_id='bar')
         fake_ports = [
-            {'fixed_ips': [{'subnet_id': server_details['subnet_id']}],
-             'device_id': 'fake_device_id',
+            {'device_id': 'fake_device_id',
              'device_owner': 'fake'},
         ]
         instance = self._init_neutron_network_plugin()
@@ -1763,13 +1758,12 @@ class NeutronNetworkHelperTestCase(test.TestCase):
         (service_instance.neutron.API.update_subnet.
             assert_called_once_with('foo', ''))
         service_instance.neutron.API.list_ports.assert_called_once_with(
-            fields=['fixed_ips', 'device_id', 'device_owner'])
+            fields=['device_id', 'device_owner'], fixed_ips=['subnet_id=foo'])
 
     def test_teardown_network_subnet_not_used_get_unhandled_error(self):
         server_details = dict(subnet_id='foo', router_id='bar')
         fake_ports = [
-            {'fixed_ips': [{'subnet_id': server_details['subnet_id']}],
-             'device_id': 'fake_device_id',
+            {'device_id': 'fake_device_id',
              'device_owner': 'fake'},
         ]
         instance = self._init_neutron_network_plugin()
@@ -1790,7 +1784,7 @@ class NeutronNetworkHelperTestCase(test.TestCase):
             assert_called_once_with('bar', 'foo'))
         self.assertFalse(service_instance.neutron.API.update_subnet.called)
         service_instance.neutron.API.list_ports.assert_called_once_with(
-            fields=['fixed_ips', 'device_id', 'device_owner'])
+            fields=['device_id', 'device_owner'], fixed_ips=['subnet_id=foo'])
 
     def test_setup_network_and_connect_share_server_to_tenant_net(self):
         def fake_create_port(*aargs, **kwargs):
diff --git a/releasenotes/notes/bug-1879754-teardown-network-d1887cdf6eb83388.yaml b/releasenotes/notes/bug-1879754-teardown-network-d1887cdf6eb83388.yaml
new file mode 100644
index 0000000000..e71beb11a2
--- /dev/null
+++ b/releasenotes/notes/bug-1879754-teardown-network-d1887cdf6eb83388.yaml
@@ -0,0 +1,5 @@
+---
+fixes:
+  - Fixed unneeded all ports list request to Neutron
+    in service instance helper module on tearing down
+    service subnet, Neutron can filter them by subnet_id itself.