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Diffstat (limited to 'python/vyos/ifconfig/tunnel.py')
| -rw-r--r-- | python/vyos/ifconfig/tunnel.py | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/python/vyos/ifconfig/tunnel.py b/python/vyos/ifconfig/tunnel.py index 4122d1a2f..05520ba84 100644 --- a/python/vyos/ifconfig/tunnel.py +++ b/python/vyos/ifconfig/tunnel.py @@ -17,6 +17,9 @@ # https://community.hetzner.com/tutorials/linux-setup-gre-tunnel from copy import deepcopy +from netaddr import EUI +from netaddr import mac_unix_expanded +from random import getrandbits from vyos.ifconfig.interface import Interface from vyos.ifconfig.afi import IP4, IP6 @@ -119,10 +122,53 @@ class _Tunnel(Interface): self.change.format(**self.config), option, value)) return True + @classmethod def get_config(cls): return dict(zip(cls.options, ['']*len(cls.options))) + def get_mac(self): + """ + Get current interface MAC (Media Access Contrl) address used. + + NOTE: Tunnel interfaces have no "MAC" address by default. The content + of the 'address' file in /sys/class/net/device contains the + local-ip thus we generate a random MAC address instead + + Example: + >>> from vyos.ifconfig import Interface + >>> Interface('eth0').get_mac() + '00:50:ab:cd:ef:00' + """ + # we choose 40 random bytes for the MAC address, this gives + # us e.g. EUI('00-EA-EE-D6-A3-C8') or EUI('00-41-B9-0D-F2-2A') + tmp = EUI(getrandbits(40)).value + # set locally administered bit in MAC address + tmp |= 0x020000000000 + # convert integer to "real" MAC address representation + mac = EUI(hex(tmp).split('x')[-1]) + # change dialect to use : as delimiter instead of - + mac.dialect = mac_unix_expanded + return str(mac) + + def update(self, config): + """ General helper function which works on a dictionary retrived by + get_config_dict(). It's main intention is to consolidate the scattered + interface setup code and provide a single point of entry when workin + on any interface. """ + + # call base class first + super().update(config) + + # Enable/Disable of an interface must always be done at the end of the + # derived class to make use of the ref-counting set_admin_state() + # function. We will only enable the interface if 'up' was called as + # often as 'down'. This is required by some interface implementations + # as certain parameters can only be changed when the interface is + # in admin-down state. This ensures the link does not flap during + # reconfiguration. + state = 'down' if 'disable' in config else 'up' + self.set_admin_state(state) class GREIf(_Tunnel): """ |