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Currently the MTU size of an interface is only checked when entered via CLI but
if the interface supportes the configured MTU at all is not verified at all.
New helper functions get_min_mtu(), get_max_mtu() and verify_mtu() have been
added to provide a central API for validation.
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>>> from vyos.ifconfig import Interface
>>> tmp=Interface('eth0')
>>> tmp.get_min_mtu()
60
>>> tmp.get_max_mtu()
9000
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A lot of derived classes from Interface implemented their own get_config()
method which more or less was the same everywhere. We also hat different
qualifiers like @staticmethod or @classmethod.
This is now changed to only have the @classmethod in Interface base class which
will return the necessary dictionary keys for the required interfaces. This
change is a mid reduction in lines of code which is always a very nice thing!
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In the past we had to provide the ethertype value used for the VLAN
protocol (0x88A8 -> 802.1ad or 0x8100 -> 802.1q).
This should be changed to a more user friendly CLI node (protocol over
ethertype) and 802.1ad over it's raw value 0x88A8. There is no need in
presenting RAW information from the ethernet header to the user. Also iproute2
calls it protocol which makes way more sense over the "raw" value.
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Instead of using an Adapter pattern to make interfaces VLAN-aware, create a
derived class named VLANIf to represent a VLAN. This change was necessary to
eliminate mixed code in Interfaces class which was VLAN - free, but recently
gained some VLAN specific code for set_admin_state().
In addition this "autoresolves" the issue in T2894 as a bond vlan interface
will no longer change the lower interface.
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With VyOS 1.2 the default WireGuard behavior is used. This means that when a
WireGuard interface is added to the system, there is no "MAC" address - also
there is no IPv6 link-local address assigned by the Kernel to this particular
interface.
With implementation of T2653 all interfaces now receive an IPv6 address - which
is also valid for WireGuard interfaces - unfortunately this logic relies on the
interface MAC address - and as there is none, the link-local address will be
always the same. The logic behind is coded here [1].
We generate an IPv6 link-local address even when there is no "MAC" address. The
behavior/functionality (as with VyOS 1.2) must be restored to not have a
link-local IPv6 address at all. Any user can add any IPv6 link-local address
manually by issuing: set interfaces wireguard wg01 address fe80::ff:1/64.
Change vyos.ifconfig.add_ipv6_eui64_address to only add the EUI64-based
link-local address if a MAC address is available.
[1] https://github.com/vyos/vyos-1x/blob/3077158391ceee4ce04c27dec33f629529727c36/python/vyos/ifconfig/interface.py#L468
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Now that b40c52682a256 ("config: T2636: get_config_dict() returns a list on
multi node by default") is implemented the workarounds can be removed.
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Currently DHCPv6-PD requires an interface address configured to dhcpv6 on the
CLI. This is not required also sometimes there is either no dhcpv6 interface
addressing available (PPPoE) or wanted. This limitation was artificial due to
the old interface code.
Change the implementation to spawn the DHCPv6 client and request a prefix even
when there is no address request configured.
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DHCP service was not stopped when an DHCP address got removed from the
interface. DHCP service is now always stopped if it is not configured
explicitly.
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ISC DHCP client will always place an Interface in admin-up state once it is
started. We must ensure that if an interface is placed in A/D state that the
DHCP client proccess is not launched and terminated if it is running.
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Pass the interface dictionary transparently to the DHCP module and render the
DHCP client config template directly from the same source instead of transcoding
it once more.
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This removes additional code paths as we can instatly work with the input dict
the same was as it was done for PPPoE. This fixes the entire DHCPv6-PD support
on non PPPoE interfaces as this was lost in translation while processing T2653.
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After the fresh rewrite of the interfaces to a unified solution (T2653) IPv6
link-local addresses are no longer added. This will result in e.g. broken RAs.
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... as it is only used inside the interface class.
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The current VyOS CLI parser code written in Python contains a ton of duplicates
which I can also hold myself accountable for - or maybe mainly me - depends on
the angle of judge.
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This is required as other interfaces (e.g. pseudo-ethernet or bond) will have
VLANs, too.
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Every derived class must implement update() to set the interfaces admin
up/down state. This is required to prevend extensive link flaps when e.g.
reconfiguring bond interfaces.
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This test is reused by a lot of instances and thus must be moved to the
base class.
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The current VyOS CLI parser code written in Python contains a ton of duplicates
which I can also hold myself accountable for - or maybe mainly me - depends on
the angle of judge.
While providing a new update() method in vyos.ifconfig.interfaces() this is
extended for bridge interfaces in the derived bridge class.
Signed-off-by: Christian Poessinger <christian@poessinger.com>
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A VLAN interface can only be placed in admin up state when the lower interface
is up, too. If this is not the case the operating system will throw and
exception.
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The current VyOS CLI parser code written in Python contains a ton of duplicates
which I can also hold myself accountable for - or maybe mainly me - depends on
the angle of judge.
While providing a new update() method in vyos.ifconfig.interfaces() this is
extended for ethernet based interfaces which also supports 802.1q, 802.1ad
VLANs. This commit migrates the existing codebase for an ethernet based
interfaces and implements the missing parts for VLANs. Adding or migrating other
interfaces (e.g. bridge or bond) will become much easier as they must reuse
the entire functionality - we now walk towards a single codepath.
Thanks for all who made this combined effort possible!
Signed-off-by: Christian Poessinger <christian@poessinger.com>
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This adds the last IP of the subnet being added as the broadcast address.
Example: adding 192.0.2.1/24 would yield:
inet 192.0.2.1/24 brd 192.0.2.255 scope global dum0
Without this the broadcast address would be missing.
Addidionally join two is_ipv4 calls into one.
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interface
Changes are made in the interface.py script in order to bring the admin state to 'UP' after the mac is manually added in system config.The script is marking the interface from up to down state(as the MAC address can only be changed if interface is in 'down' state) but it is not bringing it up after the change
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This changes the dummy interface implementation to make use of get_config_dict()
and also implement a new vyos.ifconfig.Interface().update() function to gather
all the scattered calls to update common interface configuration options.
Derived classes of Interface() should extend update() to their needs for their
special interface type - e.g. bond or bridge.
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After commit d5b58517f883 ("dhcpv6-pd: pppoe: T2506: restructure CLI") the
CLI syntax has been adjusted for a better definition of DHCPv6-PD prefix length
option. Verifying a properly rendered template indeed did not happen which
cause the function to vanish for non PPPoE interfaces.
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Will be called by all interface scripts to re-add themselves to a bridge
after deleting and recreating themselves.
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- detriplicate list appending
- detriplicate returns
- use if-elif-else
- move check if address is already added to beginning
- move caching in variable to after address assignment so a failed
assignment won't cache the address
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Add function that flushes all addresses from an interface.
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Correctly track addresses in cache _addr variable
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All operational command are moved within an Operational
class and an inherited on for wireguard.
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Break the code between v4 and v6, remove need for getter/setter
as they are just exposing the underlying dict.
Move FixedDict from tunnel code and expose it to other part so
it can be used to prevent accidental change to the dhcp option if
no default exists already.
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a new option was added to the Interface class "create".
By default the value is set to True, and when an instance of the
class is created and the underlying interface does not exists, the
class will create it.
If the option "create" is set to False, the interface will not be
created and instead the class will raise an error when it is
instantiated.
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In order to be able to use the interface class
with operational mode, these commands must not log as
it would otherwise mess with the output on the screen.
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Autoconfigure addresses using Prefix Information in Router Advertisements.
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