diff options
Diffstat (limited to 'src/conf_mode/interfaces-tunnel.py')
| -rwxr-xr-x | src/conf_mode/interfaces-tunnel.py | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/conf_mode/interfaces-tunnel.py b/src/conf_mode/interfaces-tunnel.py index 294da8ef9..ef385d2e7 100755 --- a/src/conf_mode/interfaces-tunnel.py +++ b/src/conf_mode/interfaces-tunnel.py @@ -18,6 +18,7 @@ import os from sys import exit from netifaces import interfaces +from ipaddress import IPv4Address from vyos.config import Config from vyos.configdict import dict_merge @@ -31,6 +32,7 @@ from vyos.configverify import verify_mtu_ipv6 from vyos.configverify import verify_vrf from vyos.configverify import verify_tunnel from vyos.ifconfig import Interface +from vyos.ifconfig import Section from vyos.ifconfig import TunnelIf from vyos.template import is_ipv4 from vyos.template import is_ipv6 @@ -94,6 +96,38 @@ def verify(tunnel): if 'direction' not in tunnel['parameters']['erspan']: raise ConfigError('ERSPAN version 2 requires direction to be set!') + # If tunnel source address any and key not set + if tunnel['encapsulation'] in ['gre'] and \ + tunnel['source_address'] == '0.0.0.0' and \ + dict_search('parameters.ip.key', tunnel) == None: + raise ConfigError('Tunnel parameters ip key must be set!') + + if tunnel['encapsulation'] in ['gre', 'gretap']: + if dict_search('parameters.ip.key', tunnel) != None: + # Check pairs tunnel source-address/encapsulation/key with exists tunnels. + # Prevent the same key for 2 tunnels with same source-address/encap. T2920 + for tunnel_if in Section.interfaces('tunnel'): + tunnel_cfg = get_interface_config(tunnel_if) + exist_encap = tunnel_cfg['linkinfo']['info_kind'] + exist_source_address = tunnel_cfg['address'] + exist_key = tunnel_cfg['linkinfo']['info_data']['ikey'] + new_source_address = tunnel['source_address'] + # Convert tunnel key to ip key, format "ip -j link show" + # 1 => 0.0.0.1, 999 => 0.0.3.231 + orig_new_key = int(tunnel['parameters']['ip']['key']) + new_key = IPv4Address(orig_new_key) + new_key = str(new_key) + if tunnel['encapsulation'] == exist_encap and \ + new_source_address == exist_source_address and \ + new_key == exist_key: + raise ConfigError(f'Key "{orig_new_key}" for source-address "{new_source_address}" ' \ + f'is already used for tunnel "{tunnel_if}"!') + + # Keys are not allowed with ipip and sit tunnels + if tunnel['encapsulation'] in ['ipip', 'sit']: + if dict_search('parameters.ip.key', tunnel) != None: + raise ConfigError('Keys are not allowed with ipip and sit tunnels!') + verify_mtu_ipv6(tunnel) verify_address(tunnel) verify_vrf(tunnel) |