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test-udev.py
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#!/usr/bin/python3
import json
import shutil
import logging
import unittest
import subprocess
from staslib import defs, iputil, log, trid, udev
IP = shutil.which('ip')
TRADDR4 = '1.2.3.4'
TRADDR4_REV = '4.3.2.1'
TRADDR6 = 'FE80::aaaa:BBBB:cccc:dddd'
TRADDR6_REV = 'fe80::DDDD:cccc:bbbb:AAAA'
def traddr(family, reverse=False):
if reverse:
return TRADDR4_REV if family == 4 else TRADDR6_REV
return TRADDR4 if family == 4 else TRADDR6
def get_tids_to_test(family, src_ip, ifname):
return [
(
1,
trid.TID(
{
'transport': 'tcp',
'traddr': traddr(family),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': src_ip,
'host-iface': ifname,
'host-nqn': '',
}
),
True,
),
(
2,
trid.TID(
{
'transport': 'blah',
'traddr': traddr(family),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': src_ip,
'host-iface': ifname,
'host-nqn': '',
}
),
False,
),
(
3,
trid.TID(
{
'transport': 'tcp',
'traddr': traddr(family, reverse=True),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': src_ip,
'host-iface': ifname,
'host-nqn': '',
}
),
False,
),
(
4,
trid.TID(
{
'transport': 'tcp',
'traddr': traddr(family),
'trsvcid': '8010',
'subsysnqn': 'hello',
'host-traddr': src_ip,
'host-iface': ifname,
'host-nqn': '',
}
),
False,
),
(
5,
trid.TID(
{
'transport': 'tcp',
'traddr': traddr(family),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': '255.255.255.255',
'host-iface': ifname,
'host-nqn': '',
}
),
False,
),
(
6,
trid.TID(
{
'transport': 'tcp',
'traddr': traddr(family),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': src_ip,
'host-iface': 'blah',
'host-nqn': '',
}
),
False,
),
(
7,
trid.TID(
{
'transport': 'tcp',
'traddr': traddr(family),
'trsvcid': '8009',
'subsysnqn': 'bob',
'host-traddr': src_ip,
'host-iface': ifname,
'host-nqn': '',
}
),
False,
),
(
8,
trid.TID(
{
'transport': 'tcp',
'traddr': traddr(family),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-iface': ifname,
'host-nqn': '',
}
),
True,
),
(
9,
trid.TID(
{
'transport': 'tcp',
'traddr': traddr(family),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': src_ip,
'host-nqn': '',
}
),
True,
),
(
10,
trid.TID(
{
'transport': 'tcp',
'traddr': traddr(family),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-nqn': '',
}
),
True,
),
(
11,
trid.TID(
{
'transport': 'tcp',
'traddr': traddr(family),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': src_ip,
'host-iface': ifname,
'host-nqn': '',
}
),
True,
),
(
12,
trid.TID(
{
'transport': 'tcp',
'traddr': traddr(family),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-iface': ifname,
'host-nqn': '',
}
),
True,
),
]
class DummyDevice: ...
class Test(unittest.TestCase):
'''Unit tests for class Udev'''
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
def setUp(self):
log.init(syslog=False)
self.logger = logging.getLogger()
self.logger.setLevel(logging.INFO)
# Retrieve the list of Interfaces and all the associated IP addresses
# using standard bash utility (ip address).
try:
cmd = [IP, '-j', 'address', 'show']
p = subprocess.run(cmd, stdout=subprocess.PIPE, check=True)
ifaces = json.loads(p.stdout.decode().strip())
except subprocess.CalledProcessError:
ifaces = []
self.ifaces = {}
for iface in ifaces:
addr_info = iface.get('addr_info')
if addr_info:
ifname = iface['ifname']
self.ifaces[ifname] = {}
for info in addr_info:
family = 4 if info['family'] == 'inet' else 6
self.ifaces[ifname].setdefault(family, []).append(info['local'])
@classmethod
def tearDownClass(cls):
'''Release resources'''
udev.shutdown()
def test_get_device(self):
dev = udev.UDEV.get_nvme_device('null')
self.assertEqual(dev.device_node, '/dev/null')
def test_get_bad_device(self):
self.assertIsNone(udev.UDEV.get_nvme_device('bozo'))
def test_get_key_from_attr(self):
device = udev.UDEV.get_nvme_device('null')
devname = udev.UDEV.get_key_from_attr(device, 'uevent', 'DEVNAME=', '\n')
self.assertEqual(devname, 'null')
devname = udev.UDEV.get_key_from_attr(device, 'uevent', 'DEVNAME', '\n')
self.assertEqual(devname, 'null')
devmode = udev.UDEV.get_key_from_attr(device, 'uevent', 'DEVMODE', '\n')
self.assertEqual(devmode, '0666')
bogus = udev.UDEV.get_key_from_attr(device, 'bogus', 'BOGUS', '\n')
self.assertEqual(bogus, '')
def test_is_dc_device(self):
device = DummyDevice()
device.children = ['vera', 'Chuck', 'Dave']
device.attributes = {}
self.assertFalse(udev.UDEV.is_dc_device(device))
device.attributes = {'subsysnqn': defs.WELL_KNOWN_DISC_NQN.encode('utf-8')}
self.assertTrue(udev.UDEV.is_dc_device(device))
device.attributes = {'cntrltype': 'discovery'.encode('utf-8')}
self.assertTrue(udev.UDEV.is_dc_device(device))
device.attributes = {}
device.children = []
self.assertTrue(udev.UDEV.is_dc_device(device))
def test_is_ioc_device(self):
device = DummyDevice()
device.children = []
device.attributes = {}
self.assertFalse(udev.UDEV.is_ioc_device(device))
device.attributes = {'cntrltype': 'io'.encode('utf-8')}
self.assertTrue(udev.UDEV.is_ioc_device(device))
device.attributes = {}
device.children = ['vera', 'Chuck', 'Dave']
self.assertTrue(udev.UDEV.is_ioc_device(device))
def test__cid_matches_tid(self):
ifaces = iputil.net_if_addrs()
for ifname, addrs in self.ifaces.items():
# <ifaces> contains a subset of the interfaces found in <self.ifaces>.
# So, let's make sure that we only test with the interfaces found in both.
if ifname not in ifaces:
continue
##############################################
# IPV4
ipv4_addrs = addrs.get(4, [])
for src_ipv4 in ipv4_addrs:
cid = {
'transport': 'tcp',
'traddr': traddr(4),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': src_ipv4,
'host-iface': ifname,
'src-addr': src_ipv4,
'host-nqn': '',
}
cid_legacy = {
'transport': 'tcp',
'traddr': traddr(4),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': src_ipv4,
'host-iface': ifname,
'src-addr': '', # Legacy
'host-nqn': '',
}
for case_id, tid, match in get_tids_to_test(4, src_ipv4, ifname):
self.assertEqual(
match, udev.UDEV._cid_matches_tid(tid, cid, ifaces), msg=f'Test Case {case_id} failed'
)
if case_id != 8:
self.assertEqual(
match,
udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces),
msg=f'Legacy Test Case {case_id} failed',
)
cid_legacy = {
'transport': 'tcp',
'traddr': traddr(4),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': '',
'host-iface': '',
'src-addr': '', # Legacy
'host-nqn': '',
}
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(4),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': '1.1.1.1',
'host-nqn': '',
}
)
self.assertEqual(
True, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case A4.1 failed'
)
cid_legacy = {
'transport': 'tcp',
'traddr': traddr(4),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': '',
'host-iface': ifname,
'src-addr': '', # Legacy
'host-nqn': '',
}
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(4),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-nqn': '',
}
)
self.assertEqual(
True, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case A4.2 failed'
)
self.assertEqual(
True,
udev.UDEV._cid_matches_tcp_tid_legacy(tid, cid_legacy, ifaces),
msg=f'Legacy Test Case A4.3 failed',
)
cid_legacy = {
'transport': 'tcp',
'traddr': traddr(4),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': src_ipv4,
'host-iface': '',
'src-addr': '', # Legacy
'host-nqn': '',
}
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(4),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': '1.1.1.1',
'host-nqn': '',
}
)
self.assertEqual(
False, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case B4 failed'
)
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(4),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-iface': 'blah',
'host-nqn': '',
}
)
self.assertEqual(
False, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case C4 failed'
)
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(4),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-iface': ifname,
'host-nqn': '',
}
)
self.assertEqual(
True, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case D4 failed'
)
cid_legacy = {
'transport': 'tcp',
'traddr': traddr(4),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': '',
'host-iface': ifname,
'src-addr': '', # Legacy
'host-nqn': '',
}
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(4),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': '1.1.1.1',
'host-iface': 'blah',
'host-nqn': '',
}
)
self.assertEqual(
False, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case E4 failed'
)
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(4),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': '1.1.1.1',
'host-nqn': '',
}
)
self.assertEqual(
False, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case F4 failed'
)
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(4),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': ipv4_addrs[0],
'host-nqn': '',
}
)
match = len(ipv4_addrs) == 1 and iputil.get_ipaddress_obj(
ipv4_addrs[0], ipv4_mapped_convert=True
) == iputil.get_ipaddress_obj(tid.host_traddr, ipv4_mapped_convert=True)
self.assertEqual(
match, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case G4 failed'
)
##############################################
# IPV6
ipv6_addrs = addrs.get(6, [])
for src_ipv6 in ipv6_addrs:
cid = {
'transport': 'tcp',
'traddr': traddr(6),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': src_ipv6,
'host-iface': ifname,
'src-addr': src_ipv6,
'host-nqn': '',
}
cid_legacy = {
'transport': 'tcp',
'traddr': traddr(6),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': src_ipv6,
'host-iface': ifname,
'src-addr': '', # Legacy
'host-nqn': '',
}
for case_id, tid, match in get_tids_to_test(6, src_ipv6, ifname):
self.assertEqual(
match, udev.UDEV._cid_matches_tid(tid, cid, ifaces), msg=f'Test Case {case_id} failed'
)
self.assertEqual(
match,
udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces),
msg=f'Legacy Test Case {case_id} failed',
)
cid_legacy = {
'transport': 'tcp',
'traddr': traddr(6),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': '',
'host-iface': '',
'src-addr': '', # Legacy
'host-nqn': '',
}
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(6),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': 'AAAA::FFFF',
'host-nqn': '',
}
)
self.assertEqual(
True, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case A6.1 failed'
)
cid_legacy = {
'transport': 'tcp',
'traddr': traddr(6),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': '',
'host-iface': ifname,
'src-addr': '', # Legacy
'host-nqn': '',
}
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(6),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-nqn': '',
}
)
self.assertEqual(
True, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case A6.2 failed'
)
self.assertEqual(
True,
udev.UDEV._cid_matches_tcp_tid_legacy(tid, cid_legacy, ifaces),
msg=f'Legacy Test Case A6.3 failed',
)
cid_legacy = {
'transport': 'tcp',
'traddr': traddr(6),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': src_ipv6,
'host-iface': '',
'src-addr': '', # Legacy
'host-nqn': '',
}
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(6),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': 'AAAA::FFFF',
'host-nqn': '',
}
)
self.assertEqual(
False, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case B6 failed'
)
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(6),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-iface': 'blah',
'host-nqn': '',
}
)
self.assertEqual(
False, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case C6 failed'
)
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(6),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-iface': ifname,
'host-nqn': '',
}
)
self.assertEqual(
True, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case D6 failed'
)
cid_legacy = {
'transport': 'tcp',
'traddr': traddr(6),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': '',
'host-iface': ifname,
'src-addr': '', # Legacy
'host-nqn': '',
}
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(6),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': 'AAA::BBBB',
'host-iface': 'blah',
'host-nqn': '',
}
)
self.assertEqual(
False, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case E6 failed'
)
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(6),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': 'AAA::BBB',
'host-nqn': '',
}
)
self.assertEqual(
False, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case F6 failed'
)
tid = trid.TID(
{
'transport': 'tcp',
'traddr': traddr(6),
'trsvcid': '8009',
'subsysnqn': 'hello',
'host-traddr': ipv6_addrs[0],
'host-nqn': '',
}
)
match = len(ipv6_addrs) >= 1 and iputil.get_ipaddress_obj(
ipv6_addrs[0], ipv4_mapped_convert=True
) == iputil.get_ipaddress_obj(tid.host_traddr, ipv4_mapped_convert=True)
self.assertEqual(
match, udev.UDEV._cid_matches_tid(tid, cid_legacy, ifaces), msg=f'Legacy Test Case G6 failed'
)
##############################################
# FC
cid = {
'transport': 'fc',
'traddr': 'ABC',
'trsvcid': '',
'subsysnqn': 'hello',
'host-traddr': 'AAA::BBBB',
'host-iface': '',
'src-addr': '',
'host-nqn': '',
}
tid = trid.TID(
{
'transport': 'fc',
'traddr': 'ABC',
'trsvcid': '',
'subsysnqn': 'hello',
'host-traddr': 'AAA::BBBB',
'host-nqn': '',
}
)
self.assertEqual(True, udev.UDEV._cid_matches_tid(tid, cid, ifaces), msg=f'Test Case FC-1 failed')
tid = trid.TID(
{
'transport': 'fc',
'traddr': 'ABC',
'trsvcid': '',
'subsysnqn': 'hello',
'host-traddr': 'BBBB::AAA',
'host-nqn': '',
}
)
self.assertEqual(False, udev.UDEV._cid_matches_tid(tid, cid, ifaces), msg=f'Test Case FC-2 failed')
##############################################
# RDMA
cid = {
'transport': 'rdma',
'traddr': '2.3.4.5',
'trsvcid': '4444',
'subsysnqn': 'hello',
'host-traddr': '5.4.3.2',
'host-iface': '',
'src-addr': '',
'host-nqn': '',
}
tid = trid.TID(
{
'transport': 'rdma',
'traddr': '2.3.4.5',
'trsvcid': '4444',
'subsysnqn': 'hello',
'host-traddr': '5.4.3.2',
'host-nqn': '',
}
)
self.assertEqual(True, udev.UDEV._cid_matches_tid(tid, cid, ifaces), msg=f'Test Case RDMA-1 failed')
tid = trid.TID(
{
'transport': 'rdma',
'traddr': '2.3.4.5',
'trsvcid': '4444',
'subsysnqn': 'hello',
'host-traddr': '5.5.6.6',
'host-nqn': '',
}
)
self.assertEqual(False, udev.UDEV._cid_matches_tid(tid, cid, ifaces), msg=f'Test Case RDMA-2 failed')
tid = trid.TID(
{
'transport': 'rdma',
'traddr': '2.3.4.5',
'trsvcid': '4444',
'subsysnqn': 'hello',
'host-nqn': '',
}
)
self.assertEqual(True, udev.UDEV._cid_matches_tid(tid, cid, ifaces), msg=f'Test Case RDMA-3 failed')
if __name__ == '__main__':
unittest.main()