From b693f929b63c0c847d9a3c6ee9160845ef501be1 Mon Sep 17 00:00:00 2001 From: Christian Poessinger Date: Sun, 20 Feb 2022 10:40:38 +0100 Subject: static: T4203: obey interface dhcp default route distance Commit 05aa22dc ("protocols: static: T3680: do not delete DHCP received routes") added a bug whenever a static route is modified - the DHCP interface will always end up with metric 210 - if there was a default route over a DHCP interface. --- python/vyos/configdict.py | 54 ++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 44 insertions(+), 10 deletions(-) (limited to 'python/vyos/configdict.py') diff --git a/python/vyos/configdict.py b/python/vyos/configdict.py index efeb6dc1f..f2ec93520 100644 --- a/python/vyos/configdict.py +++ b/python/vyos/configdict.py @@ -319,34 +319,42 @@ def is_source_interface(conf, interface, intftype=None): def get_dhcp_interfaces(conf, vrf=None): """ Common helper functions to retrieve all interfaces from current CLI sessions that have DHCP configured. """ - dhcp_interfaces = [] + dhcp_interfaces = {} dict = conf.get_config_dict(['interfaces'], get_first_key=True) if not dict: return dhcp_interfaces def check_dhcp(config, ifname): - out = [] + tmp = {} if 'address' in config and 'dhcp' in config['address']: + options = {} + if 'dhcp_options' in config and 'default_route_distance' in config['dhcp_options']: + options.update({'distance' : config['dhcp_options']['default_route_distance']}) if 'vrf' in config: - if vrf is config['vrf']: out.append(ifname) - else: out.append(ifname) - return out + if vrf is config['vrf']: tmp.update({ifname : options}) + else: tmp.update({ifname : options}) + return tmp for section, interface in dict.items(): - for ifname, ifconfig in interface.items(): + for ifname in interface: + # we already have a dict representation of the config from get_config_dict(), + # but with the extended information from get_interface_dict() we also + # get the DHCP client default-route-distance default option if not specified. + ifconfig = get_interface_dict(conf, ['interfaces', section], ifname) + tmp = check_dhcp(ifconfig, ifname) - dhcp_interfaces.extend(tmp) + dhcp_interfaces.update(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) + dhcp_interfaces.update(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) + dhcp_interfaces.update(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) + dhcp_interfaces.update(tmp) return dhcp_interfaces @@ -405,6 +413,12 @@ def get_interface_dict(config, base, ifname=''): if 'deleted' not in dict: dict = dict_merge(default_values, dict) + # If interface does not request an IPv4 DHCP address there is no need + # to keep the dhcp-options key + if 'address' not in dict or 'dhcp' not in dict['address']: + if 'dhcp_options' in dict: + del dict['dhcp_options'] + # XXX: T2665: blend in proper DHCPv6-PD default values dict = T2665_set_dhcpv6pd_defaults(dict) @@ -475,6 +489,12 @@ def get_interface_dict(config, base, ifname=''): # XXX: T2665: blend in proper DHCPv6-PD default values dict['vif'][vif] = T2665_set_dhcpv6pd_defaults(dict['vif'][vif]) + # If interface does not request an IPv4 DHCP address there is no need + # to keep the dhcp-options key + if 'address' not in dict['vif'][vif] or 'dhcp' not in dict['vif'][vif]['address']: + if 'dhcp_options' in dict['vif'][vif]: + del dict['vif'][vif]['dhcp_options'] + # Check if we are a member of a bridge device bridge = is_member(config, f'{ifname}.{vif}', 'bridge') if bridge: dict['vif'][vif].update({'is_bridge_member' : bridge}) @@ -509,6 +529,13 @@ def get_interface_dict(config, base, ifname=''): # XXX: T2665: blend in proper DHCPv6-PD default values dict['vif_s'][vif_s] = T2665_set_dhcpv6pd_defaults(dict['vif_s'][vif_s]) + # If interface does not request an IPv4 DHCP address there is no need + # to keep the dhcp-options key + if 'address' not in dict['vif_s'][vif_s] or 'dhcp' not in \ + dict['vif_s'][vif_s]['address']: + if 'dhcp_options' in dict['vif_s'][vif_s]: + del dict['vif_s'][vif_s]['dhcp_options'] + # Check if we are a member of a bridge device bridge = is_member(config, f'{ifname}.{vif_s}', 'bridge') if bridge: dict['vif_s'][vif_s].update({'is_bridge_member' : bridge}) @@ -543,6 +570,13 @@ def get_interface_dict(config, base, ifname=''): dict['vif_s'][vif_s]['vif_c'][vif_c] = T2665_set_dhcpv6pd_defaults( dict['vif_s'][vif_s]['vif_c'][vif_c]) + # If interface does not request an IPv4 DHCP address there is no need + # to keep the dhcp-options key + if 'address' not in dict['vif_s'][vif_s]['vif_c'][vif_c] or 'dhcp' \ + not in dict['vif_s'][vif_s]['vif_c'][vif_c]['address']: + if 'dhcp_options' in dict['vif_s'][vif_s]['vif_c'][vif_c]: + del dict['vif_s'][vif_s]['vif_c'][vif_c]['dhcp_options'] + # Check if we are a member of a bridge device bridge = is_member(config, f'{ifname}.{vif_s}.{vif_c}', 'bridge') if bridge: dict['vif_s'][vif_s]['vif_c'][vif_c].update( -- cgit v1.2.3