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-rwxr-xr-xsrc/conf_mode/protocols_isis.py72
1 files changed, 63 insertions, 9 deletions
diff --git a/src/conf_mode/protocols_isis.py b/src/conf_mode/protocols_isis.py
index 24db52567..8acff58cc 100755
--- a/src/conf_mode/protocols_isis.py
+++ b/src/conf_mode/protocols_isis.py
@@ -17,30 +17,61 @@
import os
from sys import exit
+from sys import argv
from vyos.config import Config
from vyos.configdict import node_changed
-from vyos import ConfigError
from vyos.util import call
from vyos.util import dict_search
+from vyos.util import get_interface_config
from vyos.template import render_to_string
+from vyos import ConfigError
from vyos import frr
from vyos import airbag
airbag.enable()
+frr_daemon = 'isisd'
+
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
- base = ['protocols', 'isis']
+
+ vrf = None
+ if len(argv) > 1:
+ vrf = argv[1]
+
+ base_path = ['protocols', 'isis']
+
+ # eqivalent of the C foo ? 'a' : 'b' statement
+ base = vrf and ['vrf', 'name', vrf, 'protocols', 'isis'] or base_path
isis = conf.get_config_dict(base, key_mangling=('-', '_'),
get_first_key=True)
+
+ # Assign the name of our VRF context. This MUST be done before the return
+ # statement below, else on deletion we will delete the default instance
+ # instead of the VRF instance.
+ if vrf: isis['vrf'] = vrf
+
+ # As we no re-use this Python handler for both VRF and non VRF instances for
+ # IS-IS we need to find out if any interfaces changed so properly adjust
+ # the FRR configuration and not by acctident change interfaces from a
+ # different VRF.
+ interfaces_removed = node_changed(conf, base + ['interface'])
+ if interfaces_removed:
+ isis['interface_removed'] = list(interfaces_removed)
+
+ # Bail out early if configuration tree does not exist
+ if not conf.exists(base):
+ isis.update({'deleted' : ''})
+ return isis
+
return isis
def verify(isis):
# bail out early - looks like removal from running config
- if not isis:
+ if not isis or 'deleted' in isis:
return None
if 'domain' not in isis:
@@ -53,6 +84,17 @@ def verify(isis):
if 'interface' not in isis:
raise ConfigError('Interface used for routing updates is mandatory!')
+ for interface in isis['interface']:
+ if 'vrf' in isis:
+ # If interface specific options are set, we must ensure that the
+ # interface is bound to our requesting VRF. Due to the VyOS
+ # priorities the interface is bound to the VRF after creation of
+ # the VRF itself, and before any routing protocol is configured.
+ vrf = isis['vrf']
+ tmp = get_interface_config(interface)
+ if 'master' not in tmp or tmp['master'] != vrf:
+ raise ConfigError(f'Interface {interface} is not a member of VRF {vrf}!')
+
# If md5 and plaintext-password set at the same time
if 'area_password' in isis:
if {'md5', 'plaintext_password'} <= set(isis['encryption']):
@@ -111,7 +153,7 @@ def verify(isis):
return None
def generate(isis):
- if not isis:
+ if not isis or 'deleted' in isis:
isis['new_frr_config'] = ''
return None
@@ -121,17 +163,29 @@ def generate(isis):
def apply(isis):
# Save original configuration prior to starting any commit actions
frr_cfg = frr.FRRConfig()
- frr_cfg.load_configuration(daemon='isisd')
- frr_cfg.modify_section('^interface \S+$', '')
- frr_cfg.modify_section('^router isis \S+$', '')
+ frr_cfg.load_configuration(frr_daemon)
+
+ # Generate empty helper string which can be ammended to FRR commands,
+ # it will be either empty (default VRF) or contain the "vrf <name" statement
+ vrf = ''
+ if 'vrf' in isis:
+ vrf = ' vrf ' + isis['vrf']
+
+ frr_cfg.modify_section(f'^router isis \S+{vrf}$', '')
+ for key in ['interface', 'interface_removed']:
+ if key not in isis:
+ continue
+ for interface in isis[key]:
+ frr_cfg.modify_section(f'^interface {interface}{vrf}$', '')
+
frr_cfg.add_before(r'(ip prefix-list .*|route-map .*|line vty)', isis['new_frr_config'])
- frr_cfg.commit_configuration(daemon='isisd')
+ 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 isis['new_frr_config'] == '':
for a in range(5):
- frr_cfg.commit_configuration(daemon='isisd')
+ frr_cfg.commit_configuration(frr_daemon)
return None