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-rw-r--r--python/vyos/configdict.py35
1 files changed, 35 insertions, 0 deletions
diff --git a/python/vyos/configdict.py b/python/vyos/configdict.py
index e8a87bc38..998c10bb5 100644
--- a/python/vyos/configdict.py
+++ b/python/vyos/configdict.py
@@ -316,6 +316,41 @@ def is_source_interface(conf, interface, intftype=None):
old_level = conf.set_level(old_level)
return ret_val
+def get_dhcp_interfaces(conf, vrf=None):
+ """ Common helper functions to retrieve all interfaces from current CLI
+ sessions that have DHCP configured. """
+ dhcp_interfaces = []
+ dict = conf.get_config_dict(['interfaces'], get_first_key=True)
+ if not dict:
+ return dhcp_interfaces
+
+def check_dhcp(config, ifname):
+ out = []
+ if 'address' in config and 'dhcp' in config['address']:
+ if 'vrf' in config and vrf is config['vrf']:
+ out.append(ifname)
+ else:
+ out.append(ifname)
+ return out
+
+ for section, interface in dict.items():
+ for ifname, ifconfig in interface.items():
+ tmp = check_dhcp(ifconfig, ifname)
+ dhcp_interfaces.extend(tmp)
+ # check per VLAN interfaces
+ for vif, vif_config in ifconfig.get('vif', {}).items():
+ tmp = check_dhcp(vif_config, f'{ifname}.{vif}')
+ dhcp_interfaces.extend(tmp)
+ # check QinQ VLAN interfaces
+ for vif_s, vif_s_config in ifconfig.get('vif-s', {}).items():
+ tmp = check_dhcp(vif_s_config, f'{ifname}.{vif_s}')
+ dhcp_interfaces.extend(tmp)
+ for vif_c, vif_c_config in vif_s_config.get('vif-c', {}).items():
+ tmp = check_dhcp(vif_c_config, f'{ifname}.{vif_s}.{vif_c}')
+ dhcp_interfaces.extend(tmp)
+
+ return dhcp_interfaces
+
def get_interface_dict(config, base, ifname=''):
"""
Common utility function to retrieve and mangle the interfaces configuration