mirror of
https://github.com/openvswitch/ovs
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0be6140a9a
This tool will be a replacement for the current ovs-vlan-test utility. Besides from connectivity issues it will also be able to detect performance related issues in Open vSwitch setups. Currently it uses UDP and TCP protocols for stressing. Issue #6976
75 lines
2.3 KiB
Python
75 lines
2.3 KiB
Python
# Copyright (c) 2011 Nicira Networks
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at:
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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util module contains some helper function
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"""
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import socket, struct, fcntl, array, os, subprocess, exceptions
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def str_ip(ip):
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(x1, x2, x3, x4) = struct.unpack("BBBB", ip)
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return ("%u.%u.%u.%u") % (x1, x2, x3, x4)
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def get_interface_mtu(iface):
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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indata = iface + ('\0' * (32 - len(iface)))
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try:
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outdata = fcntl.ioctl(s.fileno(), 0x8921, indata) # socket.SIOCGIFMTU
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mtu = struct.unpack("16si12x", outdata)[1]
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except:
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return 0
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return mtu
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def get_interface(address):
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"""
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Finds first interface that has given address
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"""
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bytes = 256 * 32
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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names = array.array('B', '\0' * bytes)
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outbytes = struct.unpack('iL', fcntl.ioctl(
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s.fileno(),
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0x8912, # SIOCGIFCONF
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struct.pack('iL', bytes, names.buffer_info()[0])
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))[0]
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namestr = names.tostring()
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for i in range(0, outbytes, 40):
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name = namestr[i:i + 16].split('\0', 1)[0]
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if address == str_ip(namestr[i + 20:i + 24]):
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return name
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return "" # did not find interface we were looking for
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def uname():
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os_info = os.uname()
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return os_info[2] #return only the kernel version number
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def get_driver(iface):
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try:
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p = subprocess.Popen(
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["ethtool", "-i", iface],
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE)
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out, err = p.communicate()
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if p.returncode == 0:
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lines = out.split("\n")
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driver = "%s(%s)" % (lines[0], lines[1]) #driver name + version
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else:
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driver = "no support for ethtool"
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except exceptions.OSError:
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driver = ""
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return driver
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