Adds scenario for IPv6 addresses

* Checks the way how  IPv6 addresses assigned to vNIC
* Eliminates hardcoded IPv4 subnet creation.
* Fixes problem with creating FIP for port with few addresses.
* Adds ping6 to remote_client

Partially implements: blueprint ipv6-api-testing-parity
Change-Id: I728edf0165ba47b6f8930f2fb3d08bd29cfbb317

1 files changed, 26 insertions, 9 deletions

diff --git a/tempest/scenario/manager.py b/tempest/scenario/manager.py
index 522aa4333..8911ff0ee 100644
--- a/tempest/scenario/manager.py
+++ b/tempest/scenario/manager.py
@@ -596,22 +596,31 @@ class NetworkScenarioTest(ScenarioTest):
             cidr_in_use = self._list_subnets(tenant_id=tenant_id, cidr=cidr)
             return len(cidr_in_use) != 0
 
-        tenant_cidr = netaddr.IPNetwork(CONF.network.tenant_network_cidr)
+        ip_version = kwargs.pop('ip_version', 4)
+
+        if ip_version == 6:
+            tenant_cidr = netaddr.IPNetwork(
+                CONF.network.tenant_network_v6_cidr)
+            num_bits = CONF.network.tenant_network_v6_mask_bits
+        else:
+            tenant_cidr = netaddr.IPNetwork(CONF.network.tenant_network_cidr)
+            num_bits = CONF.network.tenant_network_mask_bits
+
         result = None
+        str_cidr = None
         # Repeatedly attempt subnet creation with sequential cidr
         # blocks until an unallocated block is found.
-        for subnet_cidr in tenant_cidr.subnet(
-                CONF.network.tenant_network_mask_bits):
+        for subnet_cidr in tenant_cidr.subnet(num_bits):
             str_cidr = str(subnet_cidr)
             if cidr_in_use(str_cidr, tenant_id=network.tenant_id):
                 continue
 
             subnet = dict(
                 name=data_utils.rand_name(namestart),
-                ip_version=4,
                 network_id=network.id,
                 tenant_id=network.tenant_id,
                 cidr=str_cidr,
+                ip_version=ip_version,
                 **kwargs
             )
             try:
@@ -642,12 +651,17 @@ class NetworkScenarioTest(ScenarioTest):
         self.addCleanup(self.delete_wrapper, port.delete)
         return port
 
-    def _get_server_port_id(self, server, ip_addr=None):
+    def _get_server_port_id_and_ip4(self, server, ip_addr=None):
         ports = self._list_ports(device_id=server['id'],
                                  fixed_ip=ip_addr)
         self.assertEqual(len(ports), 1,
                          "Unable to determine which port to target.")
-        return ports[0]['id']
+        # it might happen here that this port has more then one ip address
+        # as in case of dual stack- when this port is created on 2 subnets
+        for ip46 in ports[0]['fixed_ips']:
+            ip = ip46['ip_address']
+            if netaddr.valid_ipv4(ip):
+                return ports[0]['id'], ip
 
     def _get_network_by_name(self, network_name):
         net = self._list_networks(name=network_name)
@@ -663,11 +677,14 @@ class NetworkScenarioTest(ScenarioTest):
         if not client:
             client = self.network_client
         if not port_id:
-            port_id = self._get_server_port_id(thing)
+            port_id, ip4 = self._get_server_port_id_and_ip4(thing)
+        else:
+            ip4 = None
         _, result = client.create_floatingip(
             floating_network_id=external_network_id,
             port_id=port_id,
-            tenant_id=thing['tenant_id']
+            tenant_id=thing['tenant_id'],
+            fixed_ip_address=ip4
         )
         floating_ip = net_resources.DeletableFloatingIp(
             client=client,
@@ -676,7 +693,7 @@ class NetworkScenarioTest(ScenarioTest):
         return floating_ip
 
     def _associate_floating_ip(self, floating_ip, server):
-        port_id = self._get_server_port_id(server)
+        port_id, _ = self._get_server_port_id_and_ip4(server)
         floating_ip.update(port_id=port_id)
         self.assertEqual(port_id, floating_ip.port_id)
         return floating_ip