1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
# Copyright 2016 Intel Corporation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Automation of QEMU hypervisor for launching virtio-net enabled guests.
"""
import logging
from vnfs.qemu.qemu import IVnfQemu
from conf import settings as S
from tools import tasks
class QemuVirtioNet(IVnfQemu):
"""
Control an instance of QEMU with virtio-net guest communication.
"""
def __init__(self):
"""
Initialisation function.
"""
super(QemuVirtioNet, self).__init__()
self._logger = logging.getLogger(__name__)
# insert vanilla ovs specific modules
tasks.run_task(['sudo', 'modprobe', 'vhost_net'], self._logger,
'Loading vhost_net module...', True)
# calculate indexes of guest devices (e.g. charx, dpdkvhostuserx)
i = self._number * 2
if1 = str(i)
if2 = str(i + 1)
self._cmd += ['-netdev',
'type=tap,id=' + self._net1 +
',script=no,downscript=no,' +
'ifname=tap' + if1 + ',vhost=on',
'-device',
'virtio-net-pci,mac=' +
S.getValue('GUEST_NET1_MAC')[self._number] +
',netdev=' + self._net1 + ',csum=off,gso=off,' +
'guest_tso4=off,guest_tso6=off,guest_ecn=off',
'-netdev',
'type=tap,id=' + self._net2 +
',script=no,downscript=no,' +
'ifname=tap' + if2 + ',vhost=on',
'-device',
'virtio-net-pci,mac=' +
S.getValue('GUEST_NET2_MAC')[self._number] +
',netdev=' + self._net2 + ',csum=off,gso=off,' +
'guest_tso4=off,guest_tso6=off,guest_ecn=off',
]
|
