From ce361fe12c430c792361479e5b5b3228141fd36f Mon Sep 17 00:00:00 2001
From: Christian Poessinger <christian@poessinger.com>
Date: Wed, 7 Apr 2021 14:53:49 +0200
Subject: vrf: T3344: re-add virtual network identifier
Commit 548d9057e3e (vrf: T3344: move dynamic routing protocols under "vrf name
<name> protocols") temporary removed the possibility to specify the VNI for a
given VRF to to changing of the CLI configuration nodes.
As VNI is set inside zebra, we can re-use the now widely deployed frr python
library to configure and change the configuration without any interference to
other FRR daemons.
---
src/conf_mode/vrf.py | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
(limited to 'src')
diff --git a/src/conf_mode/vrf.py b/src/conf_mode/vrf.py
index 414e514c5..a39da8991 100755
--- a/src/conf_mode/vrf.py
+++ b/src/conf_mode/vrf.py
@@ -23,14 +23,18 @@ from vyos.config import Config
from vyos.configdict import node_changed
from vyos.ifconfig import Interface
from vyos.template import render
+from vyos.template import render_to_string
from vyos.util import call
from vyos.util import cmd
from vyos.util import dict_search
from vyos.util import get_interface_config
from vyos import ConfigError
+from vyos import frr
from vyos import airbag
airbag.enable()
+frr_daemon = 'zebra'
+
config_file = r'/etc/iproute2/rt_tables.d/vyos-vrf.conf'
def list_rules():
@@ -123,6 +127,7 @@ def verify(vrf):
def generate(vrf):
render(config_file, 'vrf/vrf.conf.tmpl', vrf)
+ vrf['new_frr_config'] = render_to_string('frr/vrf.frr.tmpl', vrf)
return None
def apply(vrf):
@@ -210,6 +215,22 @@ def apply(vrf):
if 1000 in [r.get('priority') for r in list_rules() if r.get('priority') == 1000]:
call(f'ip {af} rule del pref 1000')
+ # add configuration to FRR
+ frr_cfg = frr.FRRConfig()
+ frr_cfg.load_configuration(frr_daemon)
+ frr_cfg.modify_section(f'^vrf [a-zA-Z-]*$', '')
+ frr_cfg.add_before(r'(interface .*|line vty)', vrf['new_frr_config'])
+ frr_cfg.commit_configuration(frr_daemon)
+
+ # If FRR config is blank, rerun the blank commit x times due to frr-reload
+ # behavior/bug not properly clearing out on one commit.
+ if vrf['new_frr_config'] == '':
+ for a in range(5):
+ frr_cfg.commit_configuration(frr_daemon)
+
+ # Save configuration to /run/frr/config/frr.conf
+ frr.save_configuration()
+
return None
if __name__ == '__main__':
--
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