Signed-off-by: David Gibson <david(a)gibson.dropbear.id.au>
---
avocado/common.py | 67 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 67 insertions(+)
diff --git a/avocado/common.py b/avocado/common.py
index 94308b8..d859c5d 100644
--- a/avocado/common.py
+++ b/avocado/common.py
@@ -7,6 +7,7 @@
# Copyright Red Hat
# Author: David Gibson <david(a)gibson.dropbear.id.au>
+import ipaddress
import json
import os.path
import sys
@@ -38,6 +39,11 @@ class NsTool:
def pid(self):
return self.pid
+ def relative_pid(self, relative_to):
+ cmd = '{} info -p {}'.format(NSTOOL, self.sockpath)
+ txt = relative_to.system_output(cmd)
+ return int(txt)
+
def _xcmd(self, cmd, sudo=False):
if sudo:
opts = '--keep-caps'
@@ -71,6 +77,24 @@ class NsToolUnshare(NsTool):
self.holder.stop()
+def ll_addr(x, ifname):
+ ifinfo = json.loads(x('ip -6 -j addr show {}'.format(ifname)))
+ for adinfo in ifinfo[0]['addr_info']:
+ if adinfo['scope'] != 'link':
+ continue
+ if adinfo.get('tentative') is True:
+ continue
+ return ipaddress.ip_address(adinfo['local'])
+ return None
+
+
+def slaac_wait(x, ifname):
+ addr = None
+ while addr is None:
+ addr = ll_addr(x, ifname)
+ return addr
+
+
#
# Tests for the test infrastructure itself
#
@@ -144,3 +168,46 @@ class NsConnectTests(BaseTest):
def test_connect(self):
hostns = NsTool(self.sockpath)
hostns.system_output('true')
+
+
+class SlaacWaitTests(BaseTest):
+ def setUp(self):
+ super().setUp()
+
+ self.ns1 = NsToolUnshare(self.workdir, 'ns1', '-Ucn')
+ self.ns2 = NsToolUnshare(self.workdir, 'ns2', '-n',
parent=self.ns1)
+
+ def tearDown(self):
+ del(self.ns2)
+ del(self.ns1)
+
+ super().tearDown()
+
+ def test_slaac_wait(self, sysctls={}):
+ TESTMAC = '02:aa:bb:cc:dd:ee'
+ TESTIP = ipaddress.ip_address('fe80::aa:bbff:fecc:ddee')
+
+ self.ns1.system_output('ip link add type veth', sudo=True)
+ relpid = self.ns2.relative_pid(self.ns1)
+ self.ns1.system_output(
+ 'ip link set veth1 netns {}'.format(relpid), sudo=True)
+ self.ns1.system_output(
+ 'ip link set dev veth0 address {}'.format(TESTMAC), sudo=True)
+
+ for (key, val) in sysctls.items():
+ self.ns1.system_output(
+ 'sysctl net.ipv6.conf.veth0.{}={}'.format(key, val),
sudo=True)
+ self.ns2.system_output(
+ 'sysctl net.ipv6.conf.veth1.{}={}'.format(key, val),
sudo=True)
+
+ self.ns2.system_output('ip link set veth1 up', sudo=True)
+ self.ns1.system_output('ip link set veth0 up', sudo=True)
+
+ addr = slaac_wait(self.ns1.system_output, 'veth0')
+ self.assertEqual(addr, TESTIP)
+
+ def test_optimistic_dad(self):
+ self.test_slaac_wait({'optimistic_dad': 1})
+
+ def test_no_dad(self):
+ self.test_slaac_wait({'accept_dad': 0})
--
2.40.0