On Mon, Sep 27, 2010 at 06:43:57PM -0400, Lucas Meneghel Rodrigues wrote:
> From: Amos Kong <akong@xxxxxxxxxx>
>
> Use 'ping' to test send/recive multicat packets. Flood ping test is also added.
> Limit guest network as 'bridge' mode, because multicast packets could not be
> transmitted to guest when using 'user' network.
> Add join_mcast.py for joining machine into multicast groups.
>
> Changes from v1:
> - Just flush the firewall rules with iptables -F
>
> Signed-off-by: Amos Kong <akong@xxxxxxxxxx>
> ---
> client/tests/kvm/scripts/join_mcast.py | 37 +++++++++++++
> client/tests/kvm/tests/multicast.py | 91 ++++++++++++++++++++++++++++++++
> client/tests/kvm/tests_base.cfg.sample | 9 +++-
> 3 files changed, 136 insertions(+), 1 deletions(-)
> create mode 100755 client/tests/kvm/scripts/join_mcast.py
> create mode 100644 client/tests/kvm/tests/multicast.py
>
> diff --git a/client/tests/kvm/scripts/join_mcast.py b/client/tests/kvm/scripts/join_mcast.py
> new file mode 100755
> index 0000000..350cd5f
> --- /dev/null
> +++ b/client/tests/kvm/scripts/join_mcast.py
> @@ -0,0 +1,37 @@
> +#!/usr/bin/python
> +import socket, struct, os, signal, sys
> +# -*- coding: utf-8 -*-
> +
> +"""
> +Script used to join machine into multicast groups.
> +
> +@author Amos Kong <akong@xxxxxxxxxx>
> +"""
> +
> +if __name__ == "__main__":
> + if len(sys.argv) < 4:
> + print """%s [mgroup_count] [prefix] [suffix]
> + mgroup_count: count of multicast addresses
> + prefix: multicast address prefix
> + suffix: multicast address suffix""" % sys.argv[0]
> + sys.exit()
> +
> + mgroup_count = int(sys.argv[1])
> + prefix = sys.argv[2]
> + suffix = int(sys.argv[3])
> +
> + s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
> + for i in range(mgroup_count):
> + mcast = prefix + "." + str(suffix + i)
> + try:
> + mreq = struct.pack("4sl", socket.inet_aton(mcast),
> + socket.INADDR_ANY)
> + s.setsockopt(socket.IPPROTO_IP, socket.IP_ADD_MEMBERSHIP, mreq)
> + except:
> + s.close()
> + print "Could not join multicast: %s" % mcast
> + raise
> +
> + print "join_mcast_pid:%s" % os.getpid()
> + os.kill(os.getpid(), signal.SIGSTOP)
> + s.close()
> diff --git a/client/tests/kvm/tests/multicast.py b/client/tests/kvm/tests/multicast.py
> new file mode 100644
> index 0000000..d1674a6
> --- /dev/null
> +++ b/client/tests/kvm/tests/multicast.py
> @@ -0,0 +1,91 @@
> +import logging, os, re
> +from autotest_lib.client.common_lib import error
> +from autotest_lib.client.bin import utils
> +import kvm_test_utils
> +
> +
> +def run_multicast(test, params, env):
> + """
> + Test multicast function of nic (rtl8139/e1000/virtio)
> +
> + 1) Create a VM.
> + 2) Join guest into multicast groups.
> + 3) Ping multicast addresses on host.
> + 4) Flood ping test with different size of packets.
> + 5) Final ping test and check if lose packet.
> +
> + @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,
> + timeout=int(params.get("login_timeout", 360)))
> +
> + def run_guest(cmd):
> + s, o = session.get_command_status_output(cmd)
> + if s:
> + logging.warning('Command %s executed in guest returned exit code '
> + '%s, output: %s', cmd, s, o.strip())
> +
> + def run_host_guest(cmd):
> + run_guest(cmd)
> + utils.system(cmd, ignore_status=True)
> +
> + # flush the firewall rules
> + cmd_flush = "iptables -F"
> + cmd_selinux = ("if [ -e /selinux/enforce ]; then setenforce 0; "
> + "else echo 'no /selinux/enforce file present'; fi")
> + run_host_guest(cmd_flush)
> + run_host_guest(cmd_selinux)
> + # make sure guest replies to broadcasts
> + cmd_broadcast = "echo 0 > /proc/sys/net/ipv4/icmp_echo_ignore"
Hello pradeep, thanks for your test, it's caused by this error
cmd_broadcast = "echo 0 > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts"
> + cmd_broadcast_2 = "echo 0 > /proc/sys/net/ipv4/icmp_echo_ignore_all"
> + run_guest(cmd_broadcast)
> + run_guest(cmd_broadcast_2)
> +
> + # base multicast address
> + mcast = params.get("mcast", "225.0.0.1")
> + # count of multicast addresses, less than 20
> + mgroup_count = int(params.get("mgroup_count", 5))
> + flood_minutes = float(params.get("flood_minutes", 10))
> + ifname = vm.get_ifname()
> + prefix = re.findall("\d+.\d+.\d+", mcast)[0]
> + suffix = int(re.findall("\d+", mcast)[-1])
> + # copy python script to guest for joining guest to multicast groups
> + mcast_path = os.path.join(test.bindir, "scripts/join_mcast.py")
> + if not vm.copy_files_to(mcast_path, "/tmp"):
> + raise error.TestError("Fail to copy %s to guest" % mcast_path)
> + output = session.get_command_output("python /tmp/join_mcast.py %d %s %d" %
> + (mgroup_count, prefix, suffix))
> +
> + # if success to join multicast, the process will be paused, and return PID.
> + try:
> + pid = re.findall("join_mcast_pid:(\d+)", output)[0]
> + except IndexError:
> + raise error.TestFail("Can't join multicast groups,output:%s" % output)
> +
> + try:
> + for i in range(mgroup_count):
> + new_suffix = suffix + i
> + mcast = "%s.%d" % (prefix, new_suffix)
> +
> + logging.info("Initial ping test, mcast: %s", mcast)
> + s, o = kvm_test_utils.ping(mcast, 10, interface=ifname, timeout=20)
> + if s != 0:
> + raise error.TestFail(" Ping return non-zero value %s" % o)
> +
> + logging.info("Flood ping test, mcast: %s", mcast)
> + kvm_test_utils.ping(mcast, None, interface=ifname, flood=True,
> + output_func=None, timeout=flood_minutes*60)
> +
> + logging.info("Final ping test, mcast: %s", mcast)
> + s, o = kvm_test_utils.ping(mcast, 10, interface=ifname, timeout=20)
> + if s != 0:
> + raise error.TestFail("Ping failed, status: %s, output: %s" %
> + (s, o))
> +
> + finally:
> + logging.debug(session.get_command_output("ipmaddr show"))
> + session.get_command_output("kill -s SIGCONT %s" % pid)
> + session.close()
> diff --git a/client/tests/kvm/tests_base.cfg.sample b/client/tests/kvm/tests_base.cfg.sample
> index 83e10ad..f493cdb 100644
> --- a/client/tests/kvm/tests_base.cfg.sample
> +++ b/client/tests/kvm/tests_base.cfg.sample
> @@ -493,6 +493,13 @@ variants:
> type = nic_promisc
> file_size = 1, 1460, 65000, 100000000
>
> + - multicast: install setup unattended_install.cdrom
> + type = multicast
> + nic_mode = tap
> + mcast = 225.0.0.1
> + mgroup_count = 20
> + flood_minutes = 1
> +
> - physical_resources_check: install setup unattended_install.cdrom
> type = physical_resources_check
> catch_uuid_cmd = dmidecode | awk -F: '/UUID/ {print $2}'
> @@ -1267,7 +1274,7 @@ variants:
>
> # Windows section
> - @Windows:
> - no autotest linux_s3 vlan_tag ioquit unattended_install.(url|nfs|remote_ks) jumbo file_transfer nicdriver_unload nic_promisc
> + no autotest linux_s3 vlan_tag ioquit unattended_install.(url|nfs|remote_ks) jumbo file_transfer nicdriver_unload nic_promisc multicast
> shutdown_command = shutdown /s /f /t 0
> reboot_command = shutdown /r /f /t 0
> status_test_command = echo %errorlevel%
> --
> 1.7.1
>
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