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
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Copyright (c) 2017 Cisco and/or its affiliates.
#
# 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.
#
import asyncio
from netmodel.model.type import String, Integer, Bool
from vicn.core.attribute import Attribute, Multiplicity
from vicn.core.exception import ResourceNotFound
from vicn.core.resource import Resource
from vicn.core.task import BashTask, task, inline_task
from vicn.core.task import inherit_parent, EmptyTask
from vicn.resource.lxd.lxc_container import LxcContainer
from vicn.resource.node import Node
from vicn.resource.linux.application import LinuxApplication
from vicn.resource.linux.file import TextFile
from vicn.resource.vpp.dpdk_device import DpdkDevice
from vicn.resource.vpp.scripts import FN_VPP_DPDK_SCRIPT
from vicn.resource.vpp.scripts import TPL_VPP_DPDK_DAEMON_SCRIPT
from vicn.resource.vpp.vpp_commands import CMD_VPP_DISABLE, CMD_VPP_STOP
from vicn.resource.vpp.vpp_commands import CMD_VPP_START
from vicn.resource.vpp.vpp_commands import CMD_VPP_ENABLE_PLUGIN
from vicn.resource.vpp.vpp_commands import CMD_REMOVE_DPDK_PLUGIN
from vicn.resource.vpp.vpp_host import VPPHost
#------------------------------------------------------------------------------
# VPP forwarder
#------------------------------------------------------------------------------
CMD_GET = 'killall -0 vpp_main'
CMD_DISABLE_IP_FORWARD = 'sysctl -w net.ipv4.ip_forward=0'
class VPP(LinuxApplication):
"""
Todo:
- make VPP an application with package install
- vpp should be a service (hence a singleton) for which we override the
start and stop commands
"""
__package_names__ = ['vpp', 'vpp-dpdk-dev']
plugins = Attribute(String,
multiplicity = Multiplicity.OneToMany)
node = Attribute(Node,
multiplicity = Multiplicity.OneToOne,
reverse_name = 'vpp')
numa_node = Attribute(Integer,
description = 'Numa node on which vpp will run')
core = Attribute(Integer,
description = 'Core belonging the numa node on which vpp will run')
enable_worker = Attribute(Bool,
description = 'Enable one worker for packet processing',
default = False)
#--------------------------------------------------------------------------
# Constructor and Accessors
#--------------------------------------------------------------------------
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.vppctl_lock = asyncio.Lock()
# needed by "lxc config device add"
self.memif_lock = asyncio.Lock()
if isinstance(self.node, LxcContainer):
if not 'vpp' in self.node.profiles:
self.node.profiles.append('vpp')
self.dpdk_setup_file = None
#--------------------------------------------------------------------------
# Resource lifecycle
#--------------------------------------------------------------------------
def __after__(self):
return ['BaseNetDevice']
@inherit_parent
@task
def __get__(self):
raise ResourceNotFound
return BashTask(self.node, CMD_GET)
@inherit_parent
def __subresources__(self):
socket_mem = dict()
numa_mgr = self.node.node_with_kernel.numa_mgr
for interface in self.node.interfaces:
if isinstance(interface, DpdkDevice):
# Assign as numa node the first numa node specified in a
# physical card (if any). If multiple nics connected to
# different numa nodes are assigned to this vpp memory access
# will be inefficient for the nics sitting in the other numa
# node.
socket_mem[interface.numa_node] = interface.socket_mem
for iface in self.interfaces:
if isinstance(iface.parent, DpdkDevice) and \
not iface.parent.numa_node is None:
self.numa_node = iface.parent.numa_node
break
if self.numa_node is None or self.core is None:
self.numa_node, self.core = \
numa_mgr.get_numa_core(numa_node = self.numa_node)
# Add the core on which running vpp and the dpdk parameters
setup = TPL_VPP_DPDK_DAEMON_SCRIPT + 'cpu {'
setup = setup + ''' \n main-core ''' + str(self.core)
if self.enable_worker:
self.numa_node, cpu_worker =numa_mgr.get_numa_core(self.numa_node)
setup = setup + '''\n corelist-workers ''' + str(cpu_worker)
dpdk_list = list()
for interface in self.node.interfaces:
if isinstance(interface, DpdkDevice):
dpdk_list.append('dev ' + interface.pci_address)
setup = setup + '''\n}\n\n'''
if dpdk_list:
setup = setup + 'dpdk {'
# add socket_mem
# On numa architecture socket-mem requires to set the amount of memory
# to be reserved on each numa node
socket_mem_str = 'socket-mem '
for numa in range (0,numa_mgr.get_number_of_numa()):
if numa in socket_mem:
socket_mem_str = socket_mem_str + str(socket_mem[numa])
else:
socket_mem_str = socket_mem_str + '0'
if numa < numa_mgr.get_number_of_numa()-1:
socket_mem_str = socket_mem_str + ','
dpdk_list.append(socket_mem_str)
for dpdk_dev in dpdk_list:
setup = setup + ''' \n ''' + dpdk_dev
setup = setup + '''\n}'''
dpdk_setup_file = TextFile(node = self.node,
filename = FN_VPP_DPDK_SCRIPT,
content = setup,
overwrite = True)
return dpdk_setup_file
@inherit_parent
def __create__(self):
lock = self.node.node_with_kernel.vpp_host.vppstart_lock
vpp_disable = BashTask(self.node, CMD_VPP_DISABLE, lock = lock)
vpp_stop = BashTask(self.node, CMD_VPP_STOP, lock = lock)
enable_ip_forward = BashTask(self.node, CMD_DISABLE_IP_FORWARD)
start_vpp = BashTask(self.node, CMD_VPP_START, lock = lock)
found = False
for iface in self.interfaces:
if isinstance(iface.parent, DpdkDevice):
found = True
break
remove_dpdk_plugin = EmptyTask()
if (not found):
remove_dpdk_plugin = BashTask(self.node, CMD_REMOVE_DPDK_PLUGIN, lock = lock)
return (((vpp_disable > vpp_stop) | enable_ip_forward) > (remove_dpdk_plugin > start_vpp))
@inherit_parent
def __delete__(self):
return BashTask(self.node, CMD_VPP_STOP)
def _add_plugins(self, plugin):
return BashTask(self.node, CMD_VPP_ENABLE_PLUGIN, {'plugin': plugin})
def _set_plugins(self):
cmd = None
for plugin in self.plugins:
cmd = cmd > BashTask(self.node, CMD_VPP_ENABLE_PLUGIN,
{'plugin' : plugin})
return cmd
def _remove_plugins(self, plugin):
raise NotImplementedError
@inline_task
def _get_plugins(self):
return {'plugins' : []}
|
