new file mode 100644
@@ -0,0 +1,133 @@
+import os, re, logging, commands, time, random
+from autotest_lib.client.common_lib import error
+import kvm_subprocess, kvm_test_utils, kvm_utils, kvm_net_utils
+
+def run_jumbo(test, params, env):
+ """
+ Test the RX jumbo frame function of vnics:
+ 1) boot the vm
+ 2) change the MTU of guest nics and host taps depends on the nic model
+ 3) add the static arp entry for guest nic
+ 4) wait for the MTU ok
+ 5) verify the patch mtu using ping
+ 6) ping the guest with large frames
+ 7) increament size ping
+ 8) flood ping the guest with large frames
+ 9) verify the path mtu
+ 10) revocer the mtu
+
+ @param test: kvm test object
+ @param params: Dictionary with the test parameters
+ @param env: Dictionary with test environment.
+ """
+
+ vm = kvm_test_utils.get_living_vm(env, params.get("main_vm"))
+ session = kvm_test_utils.wait_for_login(vm)
+ mtu = params.get("mtu", "1500")
+ flood_time = params.get("flood_time", "300")
+ max_icmp_pkt_size = int(mtu) - 28
+
+ ifname = vm.get_ifname(0)
+ ip = vm.get_address(0)
+ if ip is None:
+ raise error.TestError("Could not get the ip address")
+
+ try:
+ # Environment preparartion
+ ethname = kvm_net_utils.get_linux_ifname(session, vm.get_macaddr(0))
+
+ logging.info("Changing the mtu of guest ...")
+ guest_mtu_cmd = "ifconfig %s mtu %s" % (ethname , mtu)
+ s, o = session.get_command_status_output(guest_mtu_cmd)
+ if s != 0:
+ logging.error(o)
+ raise error.TestError("Fail to set the mtu of guest nic: %s"
+ % ethname)
+
+ logging.info("Chaning the mtu of host tap ...")
+ host_mtu_cmd = "ifconfig %s mtu %s" % (ifname, mtu)
+ s, o = commands.getstatusoutput(host_mtu_cmd)
+ if s != 0:
+ raise error.TestError("Fail to set the mtu of %s" % ifname)
+
+ logging.info("Add a temporary static arp entry ...")
+ arp_add_cmd = "arp -s %s %s -i %s" % (ip, vm.get_macaddr(0), ifname)
+ s, o = commands.getstatusoutput(arp_add_cmd)
+ if s != 0 :
+ raise error.TestError("Fail to add temporary arp entry")
+
+ def is_mtu_ok():
+ s, o = kvm_net_utils.ping(ip, 1, interface = ifname,
+ packetsize = max_icmp_pkt_size,
+ hint = "do", timeout = 2)
+ if s != 0:
+ return False
+ else:
+ return True
+
+ def verify_mtu():
+ logging.info("Verify the path mtu")
+ s, o = kvm_net_utils.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 kvm_net_utils.get_loss_ratio(o) != 0:
+ logging.error(o)
+ raise error.TestFail("Packet loss ratio during mtu verification"
+ " is not zero")
+
+ def flood_ping():
+ logging.info("Flood with large frames")
+ kvm_net_utils.ping(ip, interface = ifname,
+ packetsize = max_icmp_pkt_size,
+ flood = True, timeout = float(flood_time))
+
+ def large_frame_ping(count = 100):
+ logging.info("Large frame ping")
+ s, o = kvm_net_utils.ping(ip, count, interface = ifname,
+ packetsize = max_icmp_pkt_size,
+ timeout = float(count) * 2)
+ ratio = kvm_net_utils.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 = kvm_net_utils.ping(ip, 1, interface = ifname,
+ packetsize = size,
+ hint = "do", timeout = 1)
+ if s != 0:
+ s, o = kvm_net_utils.ping(ip, 10, interface = ifname,
+ packetsize = size,
+ adaptive = True, hint = "do",
+ timeout = 20)
+ if kvm_net_utils.get_loss_ratio(o) > 50:
+ raise error.TestFail("ping loss ratio is greater "
+ "than 50% for size %s" % size)
+
+ logging.info("Waiting for the MTU to be OK")
+ # Wait for the MTU is OK
+ if not kvm_utils.wait_for(is_mtu_ok, 10, 0, 1):
+ logging.debug(commands.getoutput("ifconfig -a"))
+ raise error.TestError("10 seconds elapsed while the mtu is not"
+ " as expected")
+
+ # Functional Test
+ verify_mtu()
+ large_frame_ping()
+ size_increase_ping()
+
+ # Stress test
+ flood_ping()
+ verify_mtu()
+
+ finally:
+ # Environment clean
+ session.close()
+ logging.info("Removing the temporary arp entry")
+ commands.getstatusoutput("arp -d %s -i %s" % (ip, ifname))
@@ -354,6 +354,9 @@ variants:
counts = 100
flood_minutes = 10
+ - jumbo: install setup unattended_install.cdrom
+ type = jumbo
+
- physical_resources_check: install setup unattended_install.cdrom
type = physical_resources_check
catch_uuid_cmd = dmidecode | awk -F: '/UUID/ {print $2}'
@@ -489,10 +492,16 @@ variants:
variants:
- @rtl8139:
nic_model = rtl8139
+ jumbo:
+ mtu = 1500
- e1000:
nic_model = e1000
+ jumbo:
+ mtu = 16110
- virtio:
nic_model = virtio
+ jumbo:
+ mtu = 65520
# Guests
@@ -1024,7 +1033,7 @@ variants:
# Windows section
- @Windows:
- no autotest linux_s3 vlan_tag ioquit unattended_install.(url|nfs|remote_ks)
+ no autotest linux_s3 vlan_tag ioquit unattended_install.(url|nfs|remote_ks) jumbo
shutdown_command = shutdown /s /f /t 0
reboot_command = shutdown /r /f /t 0
status_test_command = echo %errorlevel%