From 48ab6413cedb71934118143a7e095e946ac38bb7 Mon Sep 17 00:00:00 2001
From: Viacheslav Hletenko <v.gletenko@vyos.io>
Date: Sun, 20 Nov 2022 13:35:24 +0000
Subject: T4825: Add interface type veth
Add interface type veth (Virtual ethernet)
One of the usecases it's interconnect different vrf's and
default vrf via bridge
set interfaces virtual-ethernet veth0 peer-name 'veth1010'
set interfaces virtual-ethernet veth1010 address '10.0.0.10/24'
set interfaces virtual-ethernet veth1010 peer-name 'veth0'
set interfaces virtual-ethernet veth1010 vrf 'foo'
set interfaces bridge br0 address '10.0.0.1/24'
set interfaces bridge br0 member interface veth0
---
python/vyos/ifconfig/__init__.py | 1 +
python/vyos/ifconfig/veth.py | 54 ++++++++++++++++++++++++++++++++++++++++
2 files changed, 55 insertions(+)
create mode 100644 python/vyos/ifconfig/veth.py
(limited to 'python/vyos')
diff --git a/python/vyos/ifconfig/__init__.py b/python/vyos/ifconfig/__init__.py
index a37615c8f..d1ddaa13e 100644
--- a/python/vyos/ifconfig/__init__.py
+++ b/python/vyos/ifconfig/__init__.py
@@ -36,4 +36,5 @@ from vyos.ifconfig.tunnel import TunnelIf
from vyos.ifconfig.wireless import WiFiIf
from vyos.ifconfig.l2tpv3 import L2TPv3If
from vyos.ifconfig.macsec import MACsecIf
+from vyos.ifconfig.veth import VethIf
from vyos.ifconfig.wwan import WWANIf
diff --git a/python/vyos/ifconfig/veth.py b/python/vyos/ifconfig/veth.py
new file mode 100644
index 000000000..aafbf226a
--- /dev/null
+++ b/python/vyos/ifconfig/veth.py
@@ -0,0 +1,54 @@
+# Copyright 2022 VyOS maintainers and contributors <maintainers@vyos.io>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library. If not, see <http://www.gnu.org/licenses/>.
+
+from vyos.ifconfig.interface import Interface
+
+
+@Interface.register
+class VethIf(Interface):
+ """
+ Abstraction of a Linux veth interface
+ """
+ iftype = 'veth'
+ definition = {
+ **Interface.definition,
+ **{
+ 'section': 'virtual-ethernet',
+ 'prefixes': ['veth', ],
+ 'bridgeable': True,
+ },
+ }
+
+ def _create(self):
+ """
+ Create veth interface in OS kernel. Interface is administrative
+ down by default.
+ """
+ # check before create, as we have 2 veth interfaces in our CLI
+ # interface virtual-ethernet veth0 peer-name 'veth1'
+ # interface virtual-ethernet veth1 peer-name 'veth0'
+ #
+ # but iproute2 creates the pair with one command:
+ # ip link add vet0 type veth peer name veth1
+ if self.exists(self.config['peer_name']):
+ return
+
+ # create virtual-ethernet interface
+ cmd = 'ip link add {ifname} type {type}'.format(**self.config)
+ cmd += f' peer name {self.config["peer_name"]}'
+ self._cmd(cmd)
+
+ # interface is always A/D down. It needs to be enabled explicitly
+ self.set_admin_state('down')
--
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