def verify_mtu():
logging.info("Verify the path MTU")
s, o = utils_test.ping(ip, 10, interface=ifname, packetsize=max_icmp_pkt_size, hint="do", timeout=15)
if s != 0:
logging.error(o)
raise error.TestFail("Path MTU is not as expected")
if utils_test.get_loss_ratio(o) != 0:
logging.error(o)
raise error.TestFail("Packet loss ratio during MTU " "verification is not zero")
def large_frame_ping(count=100):
logging.info("Large frame ping")
s, o = utils_test.ping(ip, count, interface=ifname,
packetsize=max_icmp_pkt_size,
timeout=float(count) * 2)
ratio = utils_test.get_loss_ratio(o)
if ratio != 0:
raise error.TestFail("Loss ratio of large frame ping is %s" %
ratio)
def set_link_test(linkid):
"""
Issue set_link commands and test its function
@param linkid: id of netdev or devices to be tested
"""
ip = vm.get_address(0)
vm.set_link(linkid, up=False)
_, o = utils_test.ping(ip, count=10, timeout=20)
if utils_test.get_loss_ratio(o) != 100:
raise error.TestFail("Still can ping the %s after down %s" % (ip, linkid))
vm.set_link(linkid, up=True)
_, o = utils_test.ping(ip, count=10, timeout=20)
# we use 100% here as the notification of link status changed may be
# delayed in guest driver
if utils_test.get_loss_ratio(o) == 100:
raise error.TestFail("Packet loss during ping %s after up %s" % (ip, linkid))
def large_frame_ping(count=100):
logging.info("Large frame ping")
_, o = utils_test.ping(ip,
count,
interface=ifname,
packetsize=max_icmp_pkt_size,
timeout=float(count) * 2)
ratio = utils_test.get_loss_ratio(o)
if ratio != 0:
raise error.TestFail("Loss ratio of large frame ping is %s" %
ratio)
def size_increase_ping(step=random.randrange(90, 110)):
logging.info("Size increase ping")
for size in range(0, max_icmp_pkt_size + 1, step):
logging.info("Ping %s with size %s", ip, size)
s, o = utils_test.ping(ip, 1, interface=ifname, packetsize=size, hint="do", timeout=1)
if s != 0:
s, o = utils_test.ping(
ip, 10, interface=ifname, packetsize=size, adaptive=True, hint="do", timeout=20
)
if utils_test.get_loss_ratio(o) > int(params.get("fail_ratio", 50)):
raise error.TestFail("Ping loss ratio is greater " "than 50% for size %s" % size)
def set_link_test(linkid):
"""
Issue set_link commands and test its function
@param linkid: id of netdev or devices to be tested
"""
ip = vm.get_address(0)
vm.set_link(linkid, up=False)
_, o = utils_test.ping(ip, count=10, timeout=20)
if utils_test.get_loss_ratio(o) != 100:
raise error.TestFail("Still can ping the %s after down %s" %
(ip, linkid))
vm.set_link(linkid, up=True)
_, o = utils_test.ping(ip, count=10, timeout=20)
# we use 100% here as the notification of link status changed may be
# delayed in guest driver
if utils_test.get_loss_ratio(o) == 100:
raise error.TestFail("Packet loss during ping %s after up %s" %
(ip, linkid))
def verify_mtu():
logging.info("Verify the path MTU")
s, o = utils_test.ping(ip,
10,
interface=ifname,
packetsize=max_icmp_pkt_size,
hint="do",
timeout=15)
if s != 0:
logging.error(o)
raise error.TestFail("Path MTU is not as expected")
if utils_test.get_loss_ratio(o) != 0:
logging.error(o)
raise error.TestFail("Packet loss ratio during MTU "
"verification is not zero")
def size_increase_ping(step=random.randrange(90, 110)):
logging.info("Size increase ping")
for size in range(0, max_icmp_pkt_size + 1, step):
logging.info("Ping %s with size %s", ip, size)
s, o = utils_test.ping(ip,
1,
interface=ifname,
packetsize=size,
hint="do",
timeout=1)
if s != 0:
s, o = utils_test.ping(ip,
10,
interface=ifname,
packetsize=size,
adaptive=True,
hint="do",
timeout=20)
if utils_test.get_loss_ratio(o) > int(
params.get("fail_ratio", 50)):
raise error.TestFail("Ping loss ratio is greater "
"than 50% for size %s" % size)
def run_ping(test, params, env):
"""
Ping the guest with different size of packets.
Packet Loss Test:
1) Ping the guest with different size/interval of packets.
Stress Test:
1) Flood ping the guest.
2) Check if the network is still usable.
@param test: KVM test object.
@param params: Dictionary with the test parameters.
@param env: Dictionary with test environment.
"""
vm = env.get_vm(params["main_vm"])
vm.verify_alive()
session = vm.wait_for_login(timeout=int(params.get("login_timeout", 360)))
counts = params.get("ping_counts", 100)
flood_minutes = float(params.get("flood_minutes", 10))
nics = vm.virtnet
strict_check = params.get("strict_check", "no") == "yes"
packet_size = [0, 1, 4, 48, 512, 1440, 1500, 1505, 4054, 4055, 4096, 4192,
8878, 9000, 32767, 65507]
try:
for i, nic in enumerate(nics):
ip = vm.get_address(i)
if not ip:
logging.error("Could not get the ip of nic index %d: %s",
i, nic)
continue
for size in packet_size:
logging.info("Ping with packet size %s", size)
status, output = utils_test.ping(ip, 10,
packetsize=size,
timeout=20)
if strict_check:
ratio = utils_test.get_loss_ratio(output)
if ratio != 0:
raise error.TestFail("Loss ratio is %s for packet size"
" %s" % (ratio, size))
else:
if status != 0:
raise error.TestFail("Ping failed, status: %s,"
" output: %s" % (status, output))
logging.info("Flood ping test")
utils_test.ping(ip, None, flood=True, output_func=None,
timeout=flood_minutes * 60)
logging.info("Final ping test")
status, output = utils_test.ping(ip, counts,
timeout=float(counts) * 1.5)
if strict_check:
ratio = utils_test.get_loss_ratio(output)
if ratio != 0:
raise error.TestFail("Ping failed, status: %s,"
" output: %s" % (status, output))
else:
if status != 0:
raise error.TestFail("Ping returns non-zero value %s" %
output)
finally:
session.close()
