tools/net/ynl: accept IP string inputs

The ynl tool uses display-hint to know when to format IP addresses in
printed output, but not to parse IP addresses from --json input. Add
support for parsing ipv4 and ipv6 strings.

Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250211120127.84858-5-donald.hunter@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 21 insertions, 4 deletions

diff --git a/tools/net/ynl/pyynl/lib/ynl.py b/tools/net/ynl/pyynl/lib/ynl.py
index 62ce3340796f..dcc2c6b298d6 100644
--- a/tools/net/ynl/pyynl/lib/ynl.py
+++ b/tools/net/ynl/pyynl/lib/ynl.py
@@ -536,9 +536,11 @@ class YnlFamily(SpecFamily):
         try:
             return int(value)
         except (ValueError, TypeError) as e:
-            if 'enum' not in attr_spec:
-                raise e
-        return self._encode_enum(attr_spec, value)
+            if 'enum' in attr_spec:
+                return self._encode_enum(attr_spec, value)
+            if attr_spec.display_hint:
+                return self._from_string(value, attr_spec)
+            raise e
 
     def _add_attr(self, space, name, value, search_attrs):
         try:
@@ -571,7 +573,10 @@ class YnlFamily(SpecFamily):
             if isinstance(value, bytes):
                 attr_payload = value
             elif isinstance(value, str):
-                attr_payload = bytes.fromhex(value)
+                if attr.display_hint:
+                    attr_payload = self._from_string(value, attr)
+                else:
+                    attr_payload = bytes.fromhex(value)
             elif isinstance(value, dict) and attr.struct_name:
                 attr_payload = self._encode_struct(attr.struct_name, value)
             else:
@@ -906,6 +911,18 @@ class YnlFamily(SpecFamily):
             formatted = raw
         return formatted
 
+    def _from_string(self, string, attr_spec):
+        if attr_spec.display_hint in ['ipv4', 'ipv6']:
+            ip = ipaddress.ip_address(string)
+            if attr_spec['type'] == 'binary':
+                raw = ip.packed
+            else:
+                raw = int(ip)
+        else:
+            raise Exception(f"Display hint '{attr_spec.display_hint}' not implemented"
+                            f" when parsing '{attr_spec['name']}'")
+        return raw
+
     def handle_ntf(self, decoded):
         msg = dict()
         if self.include_raw: