From patchwork Wed Sep 29 20:18:06 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lucas Meneghel Rodrigues X-Patchwork-Id: 218192 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o8TKFKmo027402 for ; Wed, 29 Sep 2010 20:15:20 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755386Ab0I2UPR (ORCPT ); Wed, 29 Sep 2010 16:15:17 -0400 Received: from mx1.redhat.com ([209.132.183.28]:33579 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754900Ab0I2UPQ (ORCPT ); Wed, 29 Sep 2010 16:15:16 -0400 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o8TKFCiQ013744 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 29 Sep 2010 16:15:12 -0400 Received: from virtlab105.virt.bos.redhat.com (virtlab105.virt.bos.redhat.com [10.16.72.124]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o8TKFBCQ030392; Wed, 29 Sep 2010 16:15:11 -0400 From: Lucas Meneghel Rodrigues To: autotest@test.kernel.org Cc: kvm@vger.kernel.org, mst@redhat.com, psuriset@linux.vnet.ibm.com, akong@redhat.com, jasowang@redhat.com, mgoldish@redhat.com, Lucas Meneghel Rodrigues Subject: [PATCH 07/19] KVM test: Add a subtest jumbo Date: Wed, 29 Sep 2010 16:18:06 -0400 Message-Id: <1285791486-4067-1-git-send-email-lmr@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.11 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Wed, 29 Sep 2010 20:15:20 +0000 (UTC) diff --git a/client/tests/kvm/tests/jumbo.py b/client/tests/kvm/tests/jumbo.py new file mode 100644 index 0000000..2c91c83 --- /dev/null +++ b/client/tests/kvm/tests/jumbo.py @@ -0,0 +1,130 @@ +import logging, commands, random +from autotest_lib.client.common_lib import error +from autotest_lib.client.bin import utils +import kvm_test_utils, kvm_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 depending on the NIC model. + 3) Add the static ARP entry for guest NIC. + 4) Wait for the MTU ok. + 5) Verify the path MTU using ping. + 6) Ping the guest with large frames. + 7) Increment size ping. + 8) Flood ping the guest with large frames. + 9) Verify the path MTU. + 10) Recover 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 preparation + ethname = kvm_test_utils.get_linux_ifname(session, vm.get_mac_address(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) + utils.run(host_mtu_cmd) + + logging.info("Add a temporary static ARP entry ...") + arp_add_cmd = "arp -s %s %s -i %s" % (ip, vm.get_mac_address(0), ifname) + utils.run(arp_add_cmd) + + def is_mtu_ok(): + s, o = kvm_test_utils.ping(ip, 1, interface=ifname, + packetsize=max_icmp_pkt_size, + hint="do", timeout=2) + return s == 0 + + def verify_mtu(): + logging.info("Verify the path MTU") + s, o = kvm_test_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_test_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_test_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_test_utils.ping(ip, count, interface=ifname, + packetsize=max_icmp_pkt_size, + timeout=float(count) * 2) + ratio = kvm_test_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_test_utils.ping(ip, 1, interface=ifname, + packetsize=size, + hint="do", timeout=1) + if s != 0: + s, o = kvm_test_utils.ping(ip, 10, interface=ifname, + packetsize=size, + adaptive=True, hint="do", + timeout=20) + + if kvm_test_utils.get_loss_ratio(o) > int(params.get( + "fail_ratio", 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_mtu_ok = 10 + if not kvm_utils.wait_for(is_mtu_ok, wait_mtu_ok, 0, 1): + logging.debug(commands.getoutput("ifconfig -a")) + raise error.TestError("MTU is not as expected even after %s " + "seconds" % wait_mtu_ok) + + # 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") + utils.run("arp -d %s -i %s" % (ip, ifname)) diff --git a/client/tests/kvm/tests_base.cfg.sample b/client/tests/kvm/tests_base.cfg.sample index c195d1c..cf1deaf 100644 --- a/client/tests/kvm/tests_base.cfg.sample +++ b/client/tests/kvm/tests_base.cfg.sample @@ -473,6 +473,9 @@ 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}' @@ -623,10 +626,16 @@ variants: variants: - @rtl8139: nic_model = rtl8139 + jumbo: + mtu = 1500 - e1000: nic_model = e1000 + jumbo: + mtu = 16110 - virtio_net: nic_model = virtio + jumbo: + mtu = 65520 # Guests @@ -1241,7 +1250,7 @@ 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%