bonding: T5254: Fixed changing ethernet when it is a bond member

If ethernet interface is a bond memeber:
  1. Allow for changing only specific parameters which are specified
     in EthernetIf.get_bond_member_allowed_options function.
  2. Added inheritable parameters from bond interface to ethernet
     interface which are scpecified
     in BondIf.get_inherit_bond_options.
     Users can change inheritable options under ethernet interface
     but in commit it will be copied from bond interface.
  3. All other parameters are denied for changing.

Added migration script. It deletes all denied parameters under
ethernet interface if it is a bond member.

(cherry picked from commit aa0282ceb379df1ab3cc93e4bd019134d37f0d89)

3 files changed, 106 insertions, 0 deletions

diff --git a/python/vyos/ifconfig/bond.py b/python/vyos/ifconfig/bond.py
index d1d7d48c4..45e6e4c16 100644
--- a/python/vyos/ifconfig/bond.py
+++ b/python/vyos/ifconfig/bond.py
@@ -92,6 +92,19 @@ class BondIf(Interface):
         }
     }}
 
+    @staticmethod
+    def get_inherit_bond_options() -> list:
+        """
+        Returns list of option
+        which are inherited from bond interface to member interfaces
+        :return: List of interface options
+        :rtype: list
+        """
+        options = [
+            'mtu'
+        ]
+        return options
+
     def remove(self):
         """
         Remove interface from operating system. Removing the interface
diff --git a/python/vyos/ifconfig/ethernet.py b/python/vyos/ifconfig/ethernet.py
index 24ce3a803..96e5f513b 100644
--- a/python/vyos/ifconfig/ethernet.py
+++ b/python/vyos/ifconfig/ethernet.py
@@ -71,6 +71,40 @@ class EthernetIf(Interface):
         },
     }}
 
+    @staticmethod
+    def get_bond_member_allowed_options() -> list:
+        """
+        Return list of options which are allowed for changing,
+        when interface is a bond member
+        :return: List of interface options
+        :rtype: list
+        """
+        bond_allowed_sections = [
+            'description',
+            'disable',
+            'disable_flow_control',
+            'disable_link_detect',
+            'duplex',
+            'eapol.ca_certificate',
+            'eapol.certificate',
+            'eapol.passphrase',
+            'mirror.egress',
+            'mirror.ingress',
+            'offload.gro',
+            'offload.gso',
+            'offload.lro',
+            'offload.rfs',
+            'offload.rps',
+            'offload.sg',
+            'offload.tso',
+            'redirect',
+            'ring_buffer.rx',
+            'ring_buffer.tx',
+            'speed',
+            'hw_id'
+        ]
+        return bond_allowed_sections
+
     def __init__(self, ifname, **kargs):
         super().__init__(ifname, **kargs)
         self.ethtool = Ethtool(ifname)
diff --git a/python/vyos/utils/dict.py b/python/vyos/utils/dict.py
index 9484eacdd..d36b6fcfb 100644
--- a/python/vyos/utils/dict.py
+++ b/python/vyos/utils/dict.py
@@ -199,6 +199,31 @@ def dict_search_recursive(dict_object, key, path=[]):
             for x in dict_search_recursive(j, key, new_path):
                 yield x
 
+
+def dict_set(key_path, value, dict_object):
+    """ Set value to Python dictionary (dict_object) using path to key delimited by dot (.).
+        The key will be added if it does not exist.
+    """
+    path_list = key_path.split(".")
+    dynamic_dict = dict_object
+    if len(path_list) > 0:
+        for i in range(0, len(path_list)-1):
+            dynamic_dict = dynamic_dict[path_list[i]]
+        dynamic_dict[path_list[len(path_list)-1]] = value
+
+def dict_delete(key_path, dict_object):
+    """ Delete key in Python dictionary (dict_object) using path to key delimited by dot (.).
+    """
+    path_dict = dict_object
+    path_list = key_path.split('.')
+    inside = path_list[:-1]
+    if not inside:
+        del dict_object[path_list]
+    else:
+        for key in path_list[:-1]:
+            path_dict = path_dict[key]
+        del path_dict[path_list[len(path_list)-1]]
+
 def dict_to_list(d, save_key_to=None):
     """ Convert a dict to a list of dicts.
 
@@ -228,6 +253,39 @@ def dict_to_list(d, save_key_to=None):
 
     return collect
 
+def dict_to_paths_values(conf: dict) -> dict:
+    """
+    Convert nested dictionary to simple dictionary, where key is a path is delimited by dot (.).
+    """
+    list_of_paths = []
+    dict_of_options ={}
+    for path in dict_to_key_paths(conf):
+        str_path = '.'.join(path)
+        list_of_paths.append(str_path)
+
+    for path in list_of_paths:
+        dict_of_options[path] = dict_search(path,conf)
+
+    return dict_of_options
+def dict_to_key_paths(d: dict) -> list:
+    """ Generator to return list of key paths from dict of list[str]|str
+    """
+    def func(d, path):
+        if isinstance(d, dict):
+            if not d:
+                yield path
+            for k, v in d.items():
+                for r in func(v, path + [k]):
+                    yield r
+        elif isinstance(d, list):
+            yield path
+        elif isinstance(d, str):
+            yield path
+        else:
+            raise ValueError('object is not a dict of strings/list of strings')
+    for r in func(d, []):
+        yield r
+
 def dict_to_paths(d: dict) -> list:
     """ Generator to return list of paths from dict of list[str]|str
     """
@@ -305,3 +363,4 @@ class FixedDict(dict):
         if k not in self._allowed:
             raise ConfigError(f'Option "{k}" has no defined default')
         super().__setitem__(k, v)
+