[PATCHv3 net-next 1/3] tools: ynl: Add MAC address parsing support

[Hangbin Liu <liuhangbin@gmail.com>]

Add missing support for parsing MAC addresses when display_hint is 'mac'
in the YNL library. This enables YNL CLI to accept MAC address strings
for attributes like lladdr in rt-neigh operations.

Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
---
 tools/net/ynl/pyynl/lib/ynl.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tools/net/ynl/pyynl/lib/ynl.py b/tools/net/ynl/pyynl/lib/ynl.py
index 225baad3c8f8..36d36eb7e3b8 100644
--- a/tools/net/ynl/pyynl/lib/ynl.py
+++ b/tools/net/ynl/pyynl/lib/ynl.py
@@ -985,6 +985,15 @@ class YnlFamily(SpecFamily):
                 raw = bytes.fromhex(string)
             else:
                 raw = int(string, 16)
+        elif attr_spec.display_hint == 'mac':
+            # Parse MAC address in format "00:11:22:33:44:55" or "001122334455"
+            if ':' in string:
+                mac_bytes = [int(x, 16) for x in string.split(':')]
+            else:
+                if len(string) % 2 != 0:
+                    raise Exception(f"Invalid MAC address format: {string}")
+                mac_bytes = [int(string[i:i+2], 16) for i in range(0, len(string), 2)]
+            raw = bytes(mac_bytes)
         else:
             raise Exception(f"Display hint '{attr_spec.display_hint}' not implemented"
                             f" when parsing '{attr_spec['name']}'")
-- 
2.50.1