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authorChristian Poessinger <christian@poessinger.com>2021-03-11 20:38:48 +0100
committerChristian Poessinger <christian@poessinger.com>2021-03-14 11:09:56 +0100
commit8c7f469cc4463fe6b368c6310c4edafa67283571 (patch)
tree047dabf3326f2b256012a7d69e0c255611f362c9 /src/conf_mode/protocols_ospf.py
parent952c52ef012504f17f09234ab1f7608ceb4002b1 (diff)
downloadvyos-1x-8c7f469cc4463fe6b368c6310c4edafa67283571.tar.gz
vyos-1x-8c7f469cc4463fe6b368c6310c4edafa67283571.zip
vrf: ospf: T2271: create individual OSPF process for specified VRF name
VyOS CLI config: vrf red { ospf { default-information { originate { always } } default-metric 30 passive-interface default } } Will create the FRR configuration snippet: ! router ospf vrf red auto-cost reference-bandwidth 100 timers throttle spf 200 1000 10000 passive-interface default default-metric 30 default-information originate always !
Diffstat (limited to 'src/conf_mode/protocols_ospf.py')
-rwxr-xr-xsrc/conf_mode/protocols_ospf.py63
1 files changed, 57 insertions, 6 deletions
diff --git a/src/conf_mode/protocols_ospf.py b/src/conf_mode/protocols_ospf.py
index aefe7c23e..8c2372bd9 100755
--- a/src/conf_mode/protocols_ospf.py
+++ b/src/conf_mode/protocols_ospf.py
@@ -17,14 +17,18 @@
import os
from sys import exit
+from sys import argv
from vyos.config import Config
from vyos.configdict import dict_merge
+from vyos.configdict import node_changed
from vyos.configverify import verify_route_maps
from vyos.configverify import verify_interface_exists
+from vyos.configverify import verify_vrf
from vyos.template import render_to_string
from vyos.util import call
from vyos.util import dict_search
+from vyos.util import get_json_iface_options
from vyos.xml import defaults
from vyos import ConfigError
from vyos import frr
@@ -38,16 +42,33 @@ def get_config(config=None):
conf = config
else:
conf = Config()
- base = ['protocols', 'ospf']
+
+ vrf = None
+ if len(argv) > 1:
+ vrf = argv[1]
+
+ base_path = ['protocols', 'ospf']
+
+ # eqivalent of the C foo ? 'a' : 'b' statement
+ base = vrf and ['protocols', 'vrf', vrf, 'ospf'] or base_path
ospf = 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: ospf['vrf'] = vrf
+
# Bail out early if configuration tree does not exist
if not conf.exists(base):
+ ospf.update({'deleted' : ''})
return ospf
# We have gathered the dict representation of the CLI, but there are default
# options which we need to update into the dictionary retrived.
- default_values = defaults(base)
+ # XXX: Note that we can not call defaults(base), as defaults does not work
+ # on an instance of a tag node. As we use the exact same CLI definition for
+ # both the non-vrf and vrf version this is absolutely safe!
+ default_values = defaults(base_path)
# We have to cleanup the default dict, as default values could enable features
# which are not explicitly enabled on the CLI. Example: default-information
@@ -99,6 +120,14 @@ def get_config(config=None):
ospf['interface'][interface] = dict_merge(default_values,
ospf['interface'][interface])
+ # As we no re-use this Python handler for both VRF and non VRF instances for
+ # OSPF 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:
+ ospf['interface_removed'] = list(interfaces_removed)
+
# We also need some additional information from the config, prefix-lists
# and route-maps for instance. They will be used in verify()
base = ['policy']
@@ -112,6 +141,7 @@ def verify(ospf):
if not ospf:
return None
+ verify_vrf(ospf)
verify_route_maps(ospf)
if 'interface' in ospf:
@@ -121,12 +151,22 @@ def verify(ospf):
# time. FRR will only activate the last option set via CLI.
if {'hello_multiplier', 'dead_interval'} <= set(ospf['interface'][interface]):
raise ConfigError(f'Can not use hello-multiplier and dead-interval ' \
- f'concurrently for "{interface}"!')
+ f'concurrently for {interface}!')
+
+ if 'vrf' in ospf:
+ # If interface specific options are set, we must ensure that the
+ # interface is bound to our requesting VRF. Due to the VyOS/Vyatta
+ # priorities the interface is bound to the VRF after creation of
+ # the VRF itself, and before any routing protocol is configured.
+ vrf = ospf['vrf']
+ tmp = get_json_iface_options(interface)
+ if 'master' not in tmp or tmp['master'] != vrf:
+ raise ConfigError(f'Interface {interface} is not a member of VRF {vrf}!')
return None
def generate(ospf):
- if not ospf:
+ if not ospf or 'deleted' in ospf:
ospf['new_frr_config'] = ''
return None
@@ -137,8 +177,19 @@ def apply(ospf):
# Save original configuration prior to starting any commit actions
frr_cfg = frr.FRRConfig()
frr_cfg.load_configuration(frr_daemon)
- frr_cfg.modify_section(r'^interface \S+', '')
- frr_cfg.modify_section('^router ospf$', '')
+
+ if 'vrf' in ospf:
+ vrf = ospf['vrf']
+ frr_cfg.modify_section(f'^router ospf vrf {vrf}$', '')
+ else:
+ frr_cfg.modify_section('^router ospf$', '')
+
+ for key in ['interface', 'interface_removed']:
+ if key not in ospf:
+ continue
+ for interface in ospf[key]:
+ frr_cfg.modify_section(f'^interface {interface}$', '')
+
frr_cfg.add_before(r'(ip prefix-list .*|route-map .*|line vty)', ospf['new_frr_config'])
frr_cfg.commit_configuration(frr_daemon)