summaryrefslogtreecommitdiff
path: root/src/conf_mode/interfaces-ethernet.py
blob: e4f6e5ff296311cb2fc7deb43334ad4ecc3df0b4 (plain)
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
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
#!/usr/bin/env python3
#
# Copyright (C) 2019 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import os

from copy import deepcopy
from sys import exit

from vyos.ifconfig import EthernetIf
from vyos.ifconfig_vlan import apply_vlan_config
from vyos.configdict import list_diff, vlan_to_dict
from vyos.config import Config
from vyos import ConfigError

default_config_data = {
    'address': [],
    'address_remove': [],
    'description': '',
    'deleted': False,
    'dhcp_client_id': '',
    'dhcp_hostname': '',
    'dhcp_vendor_class_id': '',
    'dhcpv6_prm_only': False,
    'dhcpv6_temporary': False,
    'disable': False,
    'disable_link_detect': 1,
    'duplex': 'auto',
    'flow_control': 'on',
    'hw_id': '',
    'ip_arp_cache_tmo': 30,
    'ip_disable_arp_filter': 1,
    'ip_enable_arp_accept': 0,
    'ip_enable_arp_announce': 0,
    'ip_enable_arp_ignore': 0,
    'ip_proxy_arp': 0,
    'ip_proxy_arp_pvlan': 0,
    'intf': '',
    'mac': '',
    'mtu': 1500,
    'offload_gro': 'off',
    'offload_gso': 'off',
    'offload_sg': 'off',
    'offload_tso': 'off',
    'offload_ufo': 'off',
    'speed': 'auto',
    'vif_s': [],
    'vif_s_remove': [],
    'vif': [],
    'vif_remove': []
}

def get_config():
    eth = deepcopy(default_config_data)
    conf = Config()

    # determine tagNode instance
    try:
        eth['intf'] = os.environ['VYOS_TAGNODE_VALUE']
    except KeyError as E:
        print("Interface not specified")

    # check if ethernet interface has been removed
    cfg_base = ['interfaces', 'ethernet', eth['intf']]
    if not conf.exists(cfg_base):
        eth['deleted'] = True
        # we can not bail out early as ethernet interface can not be removed
        # Kernel will complain with: RTNETLINK answers: Operation not supported.
        # Thus we need to remove individual settings
        return eth

    # set new configuration level
    conf.set_level(cfg_base)

    # retrieve configured interface addresses
    if conf.exists('address'):
        eth['address'] = conf.return_values('address')

    # get interface addresses (currently effective) - to determine which
    # address is no longer valid and needs to be removed
    eff_addr = conf.return_effective_values('address')
    eth['address_remove'] = list_diff(eff_addr, eth['address'])

    # retrieve interface description
    if conf.exists('description'):
        eth['description'] = conf.return_value('description')

    # get DHCP client identifier
    if conf.exists('dhcp-options client-id'):
        eth['dhcp_client_id'] = conf.return_value('dhcp-options client-id')

    # DHCP client host name (overrides the system host name)
    if conf.exists('dhcp-options host-name'):
        eth['dhcp_hostname'] = conf.return_value('dhcp-options host-name')

    # DHCP client vendor identifier
    if conf.exists('dhcp-options vendor-class-id'):
        eth['dhcp_vendor_class_id'] = conf.return_value('dhcp-options vendor-class-id')

    # DHCPv6 only acquire config parameters, no address
    if conf.exists('dhcpv6-options parameters-only'):
        eth['dhcpv6_prm_only'] = True

    # DHCPv6 temporary IPv6 address
    if conf.exists('dhcpv6-options temporary'):
        eth['dhcpv6_temporary'] = True

    # ignore link state changes
    if conf.exists('disable-link-detect'):
        eth['disable_link_detect'] = 2

    # disable ethernet flow control (pause frames)
    if conf.exists('disable-flow-control'):
        eth['flow_control'] = 'off'

    # retrieve real hardware address
    if conf.exists('hw-id'):
        eth['hw_id'] = conf.return_value('hw-id')

    # disable interface
    if conf.exists('disable'):
        eth['disable'] = True

    # interface duplex
    if conf.exists('duplex'):
        eth['duplex'] = conf.return_value('duplex')

    # ARP cache entry timeout in seconds
    if conf.exists('ip arp-cache-timeout'):
        eth['ip_arp_cache_tmo'] = int(conf.return_value('ip arp-cache-timeout'))

    # ARP filter configuration
    if conf.exists('ip disable-arp-filter'):
        eth['ip_disable_arp_filter'] = 0

    # ARP enable accept
    if conf.exists('ip enable-arp-accept'):
        eth['ip_enable_arp_accept'] = 1

    # ARP enable announce
    if conf.exists('ip enable-arp-announce'):
        eth['ip_enable_arp_announce'] = 1

    # ARP enable ignore
    if conf.exists('ip enable-arp-ignore'):
        eth['ip_enable_arp_ignore'] = 1

    # Enable proxy-arp on this interface
    if conf.exists('ip enable-proxy-arp'):
        eth['ip_proxy_arp'] = 1

    # Enable private VLAN proxy ARP on this interface
    if conf.exists('ip proxy-arp-pvlan'):
        eth['ip_proxy_arp_pvlan'] = 1

    # Media Access Control (MAC) address
    if conf.exists('mac'):
        eth['mac'] = conf.return_value('mac')

    # Maximum Transmission Unit (MTU)
    if conf.exists('mtu'):
        eth['mtu'] = int(conf.return_value('mtu'))

    # GRO (generic receive offload)
    if conf.exists('offload-options generic-receive'):
        eth['offload_gro'] = conf.return_value('offload-options generic-receive')

    # GSO (generic segmentation offload)
    if conf.exists('offload-options generic-segmentation'):
        eth['offload_gso'] = conf.return_value('offload-options generic-segmentation')

    # scatter-gather option
    if conf.exists('offload-options scatter-gather'):
        eth['offload_sg'] = conf.return_value('offload-options scatter-gather')

    # TSO (TCP segmentation offloading)
    if conf.exists('offload-options tcp-segmentation'):
        eth['offload_tso'] = conf.return_value('offload-options tcp-segmentation')

    # UDP fragmentation offloading
    if conf.exists('offload-options udp-fragmentation'):
        eth['offload_ufo'] = conf.return_value('offload-options udp-fragmentation')

    # interface speed
    if conf.exists('speed'):
        eth['speed'] = conf.return_value('speed')

    # re-set configuration level to parse new nodes
    conf.set_level(cfg_base)
    # get vif-s interfaces (currently effective) - to determine which vif-s
    # interface is no longer present and needs to be removed
    eff_intf = conf.list_effective_nodes('vif-s')
    act_intf = conf.list_nodes('vif-s')
    eth['vif_s_remove'] = list_diff(eff_intf, act_intf)

    if conf.exists('vif-s'):
        for vif_s in conf.list_nodes('vif-s'):
            # set config level to vif-s interface
            conf.set_level(cfg_base + ['vif-s', vif_s])
            eth['vif_s'].append(vlan_to_dict(conf))

    # re-set configuration level to parse new nodes
    conf.set_level(cfg_base)
    # Determine vif interfaces (currently effective) - to determine which
    # vif interface is no longer present and needs to be removed
    eff_intf = conf.list_effective_nodes('vif')
    act_intf = conf.list_nodes('vif')
    eth['vif_remove'] = list_diff(eff_intf, act_intf)

    if conf.exists('vif'):
        for vif in conf.list_nodes('vif'):
            # set config level to vif interface
            conf.set_level(cfg_base + ['vif', vif])
            eth['vif'].append(vlan_to_dict(conf))

    return eth


def verify(eth):
    if eth['deleted']:
        return None

    if eth['speed'] == 'auto':
        if eth['duplex'] != 'auto':
            raise ConfigError('If speed is hardcoded, duplex must be hardcoded, too')

    if eth['duplex'] == 'auto':
        if eth['speed'] != 'auto':
            raise ConfigError('If duplex is hardcoded, speed must be hardcoded, too')

    if eth['dhcpv6_prm_only'] and eth['dhcpv6_temporary']:
        raise ConfigError('DHCPv6 temporary and parameters-only options are mutually exclusive!')

    conf = Config()
    # some options can not be changed when interface is enslaved to a bond
    for bond in conf.list_nodes('interfaces bonding'):
        if conf.exists('interfaces bonding ' + bond + ' member interface'):
            bond_member = conf.return_values('interfaces bonding ' + bond + ' member interface')
            if eth['intf'] in bond_member:
                if eth['address']:
                    raise ConfigError('Can not assign address to interface {} which is a member of {}').format(eth['intf'], bond)

    # DHCPv6 parameters-only and temporary address are mutually exclusive
    for vif_s in eth['vif_s']:
        if vif_s['dhcpv6_prm_only'] and vif_s['dhcpv6_temporary']:
            raise ConfigError('DHCPv6 temporary and parameters-only options are mutually exclusive!')

        for vif_c in vif_s['vif_c']:
            if vif_c['dhcpv6_prm_only'] and vif_c['dhcpv6_temporary']:
                raise ConfigError('DHCPv6 temporary and parameters-only options are mutually exclusive!')

    for vif in eth['vif']:
        if vif['dhcpv6_prm_only'] and vif['dhcpv6_temporary']:
            raise ConfigError('DHCPv6 temporary and parameters-only options are mutually exclusive!')

    return None

def generate(eth):
    return None

def apply(eth):
    e = EthernetIf(eth['intf'])
    if eth['deleted']:
        # delete interface
        e.remove()
    else:
        # update interface description used e.g. within SNMP
        e.set_alias(eth['description'])

        # get DHCP config dictionary and update values
        opt = e.get_dhcp_options()

        if eth['dhcp_client_id']:
            opt['client_id'] = eth['dhcp_client_id']

        if eth['dhcp_hostname']:
            opt['hostname'] = eth['dhcp_hostname']

        if eth['dhcp_vendor_class_id']:
            opt['vendor_class_id'] = eth['dhcp_vendor_class_id']

        # store DHCP config dictionary - used later on when addresses are aquired
        e.set_dhcp_options(opt)

        # get DHCPv6 config dictionary and update values
        opt = e.get_dhcpv6_options()

        if eth['dhcpv6_prm_only']:
            opt['dhcpv6_prm_only'] = True

        if eth['dhcpv6_temporary']:
            opt['dhcpv6_temporary'] = True

        # store DHCPv6 config dictionary - used later on when addresses are aquired
        e.set_dhcpv6_options(opt)

        # ignore link state changes
        e.set_link_detect(eth['disable_link_detect'])
        # disable ethernet flow control (pause frames)
        e.set_flow_control(eth['flow_control'])
        # configure ARP cache timeout in milliseconds
        e.set_arp_cache_tmo(eth['ip_arp_cache_tmo'])
        # configure ARP filter configuration
        e.set_arp_filter(eth['ip_disable_arp_filter'])
        # configure ARP accept
        e.set_arp_accept(eth['ip_enable_arp_accept'])
        # configure ARP announce
        e.set_arp_announce(eth['ip_enable_arp_announce'])
        # configure ARP ignore
        e.set_arp_ignore(eth['ip_enable_arp_ignore'])
        # Enable proxy-arp on this interface
        e.set_proxy_arp(eth['ip_proxy_arp'])
        # Enable private VLAN proxy ARP on this interface
        e.set_proxy_arp_pvlan(eth['ip_proxy_arp_pvlan'])

        # Change interface MAC address - re-set to real hardware address (hw-id)
        # if custom mac is removed
        if eth['mac']:
            e.set_mac(eth['mac'])
        else:
            e.set_mac(eth['hw_id'])

        # Maximum Transmission Unit (MTU)
        e.set_mtu(eth['mtu'])

        # GRO (generic receive offload)
        e.set_gro(eth['offload_gro'])

        # GSO (generic segmentation offload)
        e.set_gso(eth['offload_gso'])

        # scatter-gather option
        e.set_sg(eth['offload_sg'])

        # TSO (TCP segmentation offloading)
        e.set_tso(eth['offload_tso'])

        # UDP fragmentation offloading
        e.set_ufo(eth['offload_ufo'])

        # Set physical interface speed and duplex
        e.set_speed_duplex(eth['speed'], eth['duplex'])

        # Enable/Disable interface
        if eth['disable']:
            e.set_state('down')
        else:
            e.set_state('up')

        # Configure interface address(es)
        # - not longer required addresses get removed first
        # - newly addresses will be added second
        for addr in eth['address_remove']:
            e.del_addr(addr)
        for addr in eth['address']:
            e.add_addr(addr)

        # remove no longer required service VLAN interfaces (vif-s)
        for vif_s in eth['vif_s_remove']:
            e.del_vlan(vif_s)

        # create service VLAN interfaces (vif-s)
        for vif_s in eth['vif_s']:
            s_vlan = e.add_vlan(vif_s['id'], ethertype=vif_s['ethertype'])
            apply_vlan_config(s_vlan, vif_s)

            # remove no longer required client VLAN interfaces (vif-c)
            # on lower service VLAN interface
            for vif_c in vif_s['vif_c_remove']:
                s_vlan.del_vlan(vif_c)

            # create client VLAN interfaces (vif-c)
            # on lower service VLAN interface
            for vif_c in vif_s['vif_c']:
                c_vlan = s_vlan.add_vlan(vif_c['id'])
                apply_vlan_config(c_vlan, vif_c)

        # remove no longer required VLAN interfaces (vif)
        for vif in eth['vif_remove']:
            e.del_vlan(vif)

        # create VLAN interfaces (vif)
        for vif in eth['vif']:
            # QoS priority mapping can only be set during interface creation
            # so we delete the interface first if required.
            if vif['egress_qos_changed'] or vif['ingress_qos_changed']:
                try:
                    # on system bootup the above condition is true but the interface
                    # does not exists, which throws an exception, but that's legal
                    e.del_vlan(vif['id'])
                except:
                    pass

            vlan = e.add_vlan(vif['id'], ingress_qos=vif['ingress_qos'], egress_qos=vif['egress_qos'])
            apply_vlan_config(vlan, vif)

    return None

if __name__ == '__main__':
    try:
        c = get_config()
        verify(c)
        generate(c)
        apply(c)
    except ConfigError as e:
        print(e)
        exit(1)