vpp: T8182: Disallow configuration of IPoE server on VPP interface

2 files changed, 32 insertions, 0 deletions

diff --git a/src/conf_mode/service_ipoe-server.py b/src/conf_mode/service_ipoe-server.py
index 50628947e..360254828 100755
--- a/src/conf_mode/service_ipoe-server.py
+++ b/src/conf_mode/service_ipoe-server.py
@@ -29,6 +29,7 @@ from vyos.accel_ppp_util import verify_accel_ppp_name_servers
 from vyos.accel_ppp_util import verify_accel_ppp_wins_servers
 from vyos.accel_ppp_util import verify_accel_ppp_ip_pool
 from vyos.accel_ppp_util import verify_accel_ppp_authentication
+from vyos.vpp.utils import cli_ifaces_list
 from vyos import ConfigError
 from vyos import airbag
 
@@ -58,6 +59,9 @@ def get_config(config=None):
         )
 
     ipoe['server_type'] = 'ipoe'
+
+    ipoe['vpp_ifaces'] = cli_ifaces_list(conf)
+
     return ipoe
 
 
@@ -69,6 +73,13 @@ def verify(ipoe):
         raise ConfigError('No IPoE interface configured')
 
     for interface, iface_config in ipoe['interface'].items():
+        if ipoe.get('vpp_ifaces'):
+            base_interface = interface.split('.')[0]
+            if base_interface in ipoe['vpp_ifaces']:
+                raise ConfigError(
+                    f'{interface} is a VPP interface and cannot be used for IPoE!'
+                )
+
         verify_interface_exists(ipoe, interface, warning_only=True)
         if 'client_subnet' in iface_config and 'vlan' in iface_config:
             raise ConfigError(
diff --git a/src/conf_mode/vpp.py b/src/conf_mode/vpp.py
index 79c46bde8..27262efb5 100755
--- a/src/conf_mode/vpp.py
+++ b/src/conf_mode/vpp.py
@@ -429,6 +429,13 @@ def get_config(config=None):
                     iface_filter_eth(conf, iface)
                 set_dependents(dependency, conf, iface)
 
+    config['ipoe_conf'] = conf.get_config_dict(
+        ['service', 'ipoe-server'],
+        key_mangling=('-', '_'),
+        get_first_key=True,
+        no_tag_node_value_mangle=True,
+    )
+
     # kernel-interfaces dependency
     if effective_config.get('kernel_interfaces'):
         for iface in config.get('kernel_interfaces', {}):
@@ -481,6 +488,20 @@ def verify(config):
     if 'interface' not in config['settings']:
         raise ConfigError('"settings interface" is required but not set!')
 
+    ipoe_ifaces = list(
+        {
+            iface
+            for iface in config['settings']['interface']
+            for ipoe_iface in config.get('ipoe_conf', {}).get('interface', {})
+            if iface == ipoe_iface or ipoe_iface.startswith(f'{iface}.')
+        }
+    )
+    if ipoe_ifaces:
+        raise ConfigError(
+            f'Interface(s) {", ".join(ipoe_ifaces)} cannot be added to VPP because '
+            'IPoE is already configured. An interface cannot be used by both VPP and IPoE!'
+        )
+
     # check if the system meets minimal requirements
     verify_vpp_minimum_memory()