def run_test(ansible_adhoc,
testbed,
conn_graph_facts,
leaf_fanouts,
is_pfc=True,
pause_time=65535):
"""
@Summary: Run test for Ethernet flow control (FC) or priority-based flow control (PFC)
@param ansible_adhoc: Fixture provided by the pytest-ansible package. Source of the various device objects. It is
mandatory argument for the class constructors.
@param testbed: Testbed information
@param conn_graph_facts: Testbed topology connectivity information
@param leaf_fanouts: Leaf fanout switches
@param is_pfc: If this test is for PFC?
@param pause_time: Pause time quanta (0-65535) in the frame. 0 means unpause.
"""
setup_testbed(ansible_adhoc, testbed, leaf_fanouts)
conn_facts = conn_graph_facts['device_conn']
dut_hostname = testbed['dut']
dut_ans = AnsibleHost(ansible_adhoc, dut_hostname)
int_status = dut_ans.show_interface(
command="status")['ansible_facts']['int_status']
""" We only test active physical interfaces """
active_phy_intfs = [intf for intf in int_status if \
intf.startswith('Ethernet') and \
int_status[intf]['admin_state'] == 'up' and \
int_status[intf]['oper_state'] == 'up']
""" Generate PFC or FC packets for active physical interfaces """
for intf in active_phy_intfs:
peer_device = conn_facts[intf]['peerdevice']
peer_port = conn_facts[intf]['peerport']
peer_port_name = eos_to_linux_intf(peer_port)
peerdev_ans = AnsibleHost(ansible_adhoc, peer_device)
if is_pfc:
for priority in range(PRIO_COUNT):
cmd = "sudo python %s -i %s -p %d -t %d -n %d" % (
PFC_GEN_FILE_DEST, peer_port_name, 2**
priority, pause_time, PKT_COUNT)
peerdev_ans.command(cmd)
else:
cmd = "sudo python %s -i %s -g -t %d -n %d" % (
PFC_GEN_FILE_DEST, peer_port_name, pause_time, PKT_COUNT)
peerdev_ans.command(cmd)
""" SONiC takes some time to update counters in database """
time.sleep(5)
""" Check results """
counter_facts = dut_ans.sonic_pfc_counters(method="get")['ansible_facts']
for intf in active_phy_intfs:
if is_pfc:
assert counter_facts[intf]['Rx'] == [str(PKT_COUNT)] * PRIO_COUNT
else:
assert counter_facts[intf]['Rx'] == ['0'] * PRIO_COUNT
def run_test(fanouthosts, duthost, conn_graph_facts, leaf_fanouts, is_pfc=True, pause_time=65535, check_continous_pfc=False):
"""
@Summary: Run test for Ethernet flow control (FC) or priority-based flow control (PFC)
@param duthost: The object for interacting with DUT through ansible
@param conn_graph_facts: Testbed topology connectivity information
@param leaf_fanouts: Leaf fanout switches
@param is_pfc: If this test is for PFC?
@param pause_time: Pause time quanta (0-65535) in the frame. 0 means unpause.
"""
setup_testbed(fanouthosts, duthost, leaf_fanouts)
conn_facts = conn_graph_facts['device_conn'][duthost.hostname]
int_status = duthost.show_interface(command = "status")['ansible_facts']['int_status']
""" We only test active physical interfaces """
active_phy_intfs = [intf for intf in int_status if \
intf.startswith('Ethernet') and \
int_status[intf]['admin_state'] == 'up' and \
int_status[intf]['oper_state'] == 'up']
if not check_continous_pfc:
""" Generate PFC or FC packets for active physical interfaces """
for intf in active_phy_intfs:
peer_device = conn_facts[intf]['peerdevice']
peer_port = conn_facts[intf]['peerport']
peer_port_name = eos_to_linux_intf(peer_port)
peerdev_ans = fanouthosts[peer_device]
if is_pfc:
for priority in range(PRIO_COUNT):
cmd = "sudo python %s -i %s -p %d -t %d -n %d" % (PFC_GEN_FILE_DEST, peer_port_name, 2 ** priority, pause_time, PKT_COUNT)
peerdev_ans.host.command(cmd)
else:
cmd = "sudo python %s -i %s -g -t %d -n %d" % (PFC_GEN_FILE_DEST, peer_port_name, pause_time, PKT_COUNT)
peerdev_ans.host.command(cmd)
""" SONiC takes some time to update counters in database """
time.sleep(5)
""" Check results """
counter_facts = duthost.sonic_pfc_counters(method = "get")['ansible_facts']
for intf in active_phy_intfs:
if is_pfc:
assert counter_facts[intf]['Rx'] == [str(PKT_COUNT)] * PRIO_COUNT
else:
assert counter_facts[intf]['Rx'] == ['0'] * PRIO_COUNT
else:
for intf in active_phy_intfs:
"""only check priority 3 and 4: lossless priorities"""
for priority in range(3, 5):
""" Clear PFC counters """
duthost.sonic_pfc_counters(method = "clear")
peer_device = conn_facts[intf]['peerdevice']
peer_port = conn_facts[intf]['peerport']
peer_port_name = eos_to_linux_intf(peer_port)
peerdev_ans = fanouthosts[peer_device]
cmd = "sudo python %s -i %s -p %d -t %d -n %d" % (PFC_GEN_FILE_DEST, peer_port_name, 2 ** priority, pause_time, PKT_COUNT)
peerdev_ans.host.command(cmd)
time.sleep(5)
pfc_rx = duthost.sonic_pfc_counters(method = "get")['ansible_facts']
"""check pfc Rx frame count on particular priority are increased"""
assert pfc_rx[intf]['Rx'][priority] == str(PKT_COUNT)
"""check LHS priorities are 0 count"""
for i in range(priority):
assert pfc_rx[intf]['Rx'][i] == '0'
"""check RHS priorities are 0 count"""
for i in range(priority+1, PRIO_COUNT):
assert pfc_rx[intf]['Rx'][i] == '0'
def run_test_t0(fanouthosts,
duthost,
ptfhost,
conn_graph_facts,
leaf_fanouts,
dscp,
dscp_bg,
queue_paused,
send_pause,
pfc_pause,
pause_prio,
pause_time=65535,
max_test_intfs_count=128):
"""
@Summary: Run a series of tests on a T0 topology.
For the T0 topology, we only test Vlan (server-faced) interfaces.
@param conn_graph_facts: Testbed topology
@param leaf_fanouts: Leaf fanout switches
@param dscp: DSCP value of test data packets
@param dscp_bg: DSCP value of background data packets
@param queue_paused: if the queue is expected to be paused
@param send_pause: send pause frames or not
@param pfc_pause: send PFC pause frames or not
@param pause_prio: priority of PFC franme
@param pause_time: pause time quanta. It is 65535 (maximum pause time quanta) by default.
@param max_test_intfs_count: maximum count of interfaces to test. By default, it is a very large value to cover all the interfaces.
return: Return # of iterations and # of passed iterations for each tested interface.
"""
""" Clear DUT's PFC counters """
duthost.sonic_pfc_counters(method="clear")
""" Disable DUT's PFC wd """
duthost.shell('sudo pfcwd stop')
""" Generate a T0 testbed configuration """
dut_intfs, ptf_intfs, ptf_ip_addrs, ptf_mac_addrs = gen_testbed_t0(duthost)
results = dict()
for i in range(min(max_test_intfs_count, len(ptf_intfs))):
src_index = i
dst_index = (i + 1) % len(ptf_intfs)
src_intf = ptf_intfs[src_index]
dst_intf = ptf_intfs[dst_index]
src_ip = ptf_ip_addrs[src_index]
dst_ip = ptf_ip_addrs[dst_index]
src_mac = ptf_mac_addrs[src_index]
dst_mac = ptf_mac_addrs[dst_index]
""" DUT interface to pause """
dut_intf_paused = dut_intfs[dst_index]
""" Clear MAC table in DUT """
duthost.shell('sonic-clear fdb all')
time.sleep(2)
if send_pause:
peer_device = conn_graph_facts['device_conn'][dut_intf_paused]['peerdevice']
peer_port = conn_graph_facts['device_conn'][dut_intf_paused]['peerport']
peer_port_name = eos_to_linux_intf(peer_port)
peerdev_ans = fanouthosts[peer_device]
if not pfc_pause:
pause_prio = None
start_pause(host_ans=peerdev_ans,
pkt_gen_path=PFC_GEN_REMOTE_PATH,
intf=peer_port_name,
pkt_count=PFC_PKT_COUNT,
pause_duration=pause_time,
pause_priority=pause_prio)
""" Wait for PFC pause frame generation """
time.sleep(1)
""" Run PTF test """
intf_info = '--interface %d@%s --interface %d@%s' % (src_index, src_intf, dst_index, dst_intf)
test_params = ("mac_src=\'%s\';" % src_mac
+ "mac_dst=\'%s\';" % dst_mac
+ "ip_src=\'%s\';" % src_ip
+ "ip_dst=\'%s\';" % dst_ip
+ "dscp=%d;" % dscp
+ "dscp_bg=%d;" % dscp_bg
+ "pkt_count=%d;" % PTF_PKT_COUNT
+ "pkt_intvl=%f;" % PTF_PKT_INTVL_SEC
+ "port_src=%d;" % src_index
+ "port_dst=%d;" % dst_index
+ "queue_paused=%s;" % queue_paused
+ "dut_has_mac=False")
cmd = 'ptf --test-dir %s %s --test-params="%s"' % (os.path.dirname(PTF_FILE_REMOTE_PATH), intf_info, test_params)
print cmd
stdout = ansible_stdout_to_str(ptfhost.shell(cmd)['stdout'])
words = stdout.split()
"""
Expected format: "Passes: a / b"
where a is # of passed iterations and b is total # of iterations
"""
if len(words) != 4:
print 'Unknown PTF test result format'
results[dut_intf_paused] = [0, 0]
else:
results[dut_intf_paused] = [int(words[1]), int(words[3])]
time.sleep(1)
if send_pause:
""" Stop PFC / FC storm """
stop_pause(peerdev_ans, PFC_GEN_FILE)
time.sleep(1)
return results