summaryrefslogtreecommitdiff
path: root/src/conf_mode/interfaces-ethernet.py
blob: 8ffefc7cf2bc915348e7e6876bdf716f3b6fc954 (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
#!/usr/bin/env python3
#
# Copyright (C) 2019-2020 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 sys import exit
from copy import deepcopy
from netifaces import interfaces

from vyos.ifconfig import EthernetIf
from vyos.ifconfig_vlan import apply_all_vlans, verify_vlan_config
from vyos.configdict import list_diff, intf_to_dict, add_to_dict, interface_default_data
from vyos.validate import is_member
from vyos.config import Config
from vyos import ConfigError

default_config_data = {
    **interface_default_data,
    'deleted': False,
    'duplex': 'auto',
    'flow_control': 'on',
    'hw_id': '',
    'ip_arp_cache_tmo': 30,
    'ip_proxy_arp_pvlan': 0,
    'is_bond_member': False,
    'intf': '',
    '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': [],
    'vrf': ''
}


def get_config():
    # determine tagNode instance
    if 'VYOS_TAGNODE_VALUE' not in os.environ:
        raise ConfigError('Interface (VYOS_TAGNODE_VALUE) not specified')

    ifname = os.environ['VYOS_TAGNODE_VALUE']
    conf = Config()

    # check if ethernet interface has been removed
    cfg_base = ['interfaces', 'ethernet', ifname]
    if not conf.exists(cfg_base):
        eth = deepcopy(default_config_data)
        eth['intf'] = ifname
        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)

    eth, disabled = intf_to_dict(conf, default_config_data)

    # 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')

    # 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'))

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

    # check if we are a member of any bond
    eth['is_bond_member'] = is_member(conf, eth['intf'], 'bonding')

    # 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')

    # remove default IPv6 link-local address if member of a bond
    if eth['is_bond_member'] and 'fe80::/64' in eth['ipv6_eui64_prefix']:
        eth['ipv6_eui64_prefix'].remove('fe80::/64')
        eth['ipv6_eui64_prefix_remove'].append('fe80::/64')

    add_to_dict(conf, disabled, eth, 'vif', 'vif')
    add_to_dict(conf, disabled, eth, 'vif-s', 'vif_s')

    return eth


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

    if eth['intf'] not in interfaces():
        raise ConfigError(f"Interface ethernet {eth['intf']} does not exist")

    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!')

    memberof = eth['is_bridge_member'] if eth['is_bridge_member'] else eth['is_bond_member']

    if ( memberof
            and ( eth['address']
                or eth['ipv6_eui64_prefix']
                or eth['ipv6_autoconf'] ) ):
        raise ConfigError((
            f'Cannot assign address to interface "{eth["intf"]}" '
            f'as it is a member of "{memberof}"!'))

    if eth['vrf']:
        if eth['vrf'] not in interfaces():
            raise ConfigError(f'VRF "{eth["vrf"]}" does not exist')

        if memberof:
            raise ConfigError((
                    f'Interface "{eth["intf"]}" cannot be member of VRF "{eth["vrf"]}" '
                    f'and "{memberof}" at the same time!'))

    # use common function to verify VLAN configuration
    verify_vlan_config(eth)
    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'])

        if eth['dhcp_client_id']:
            e.dhcp.v4.options['client_id'] = eth['dhcp_client_id']

        if eth['dhcp_hostname']:
            e.dhcp.v4.options['hostname'] = eth['dhcp_hostname']

        if eth['dhcp_vendor_class_id']:
            e.dhcp.v4.options['vendor_class_id'] = eth['dhcp_vendor_class_id']

        if eth['dhcpv6_prm_only']:
            e.dhcp.v6.options['dhcpv6_prm_only'] = True

        if eth['dhcpv6_temporary']:
            e.dhcp.v6.options['dhcpv6_temporary'] = True

        if eth['dhcpv6_pd_interfaces']:
            e.dhcp.v6.options['dhcpv6_pd_interfaces'] = eth['dhcpv6_pd_interfaces']

        # 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'])
        # IPv6 accept RA
        e.set_ipv6_accept_ra(eth['ipv6_accept_ra'])
        # IPv6 address autoconfiguration
        e.set_ipv6_autoconf(eth['ipv6_autoconf'])
        # IPv6 forwarding
        e.set_ipv6_forwarding(eth['ipv6_forwarding'])
        # IPv6 Duplicate Address Detection (DAD) tries
        e.set_ipv6_dad_messages(eth['ipv6_dup_addr_detect'])

        # Delete old IPv6 EUI64 addresses before changing MAC
        for addr in eth['ipv6_eui64_prefix_remove']:
            e.del_ipv6_eui64_address(addr)

        # 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'])
        elif eth['hw_id']:
            e.set_mac(eth['hw_id'])

        # Add IPv6 EUI-based addresses
        for addr in eth['ipv6_eui64_prefix']:
            e.add_ipv6_eui64_address(addr)

        # 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_admin_state('down')
        else:
            e.set_admin_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)

        # assign/remove VRF (ONLY when not a member of a bridge or bond,
        # otherwise 'nomaster' removes it from it)
        if not ( eth['is_bridge_member'] or eth['is_bond_member'] ):
            e.set_vrf(eth['vrf'])

        # re-add ourselves to any bridge we might have fallen out of
        if eth['is_bridge_member']:
            e.add_to_bridge(eth['is_bridge_member'])

        # apply all vlans to interface
        apply_all_vlans(e, eth)

    return None

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