tools/net/ynl: ethtool: fix crash when Hardware Clock info is missing

JIRA: https://issues.redhat.com/browse/RHEL-78772
Upstream Status: net.git commit 4537581

commit 4537581
Author: Hangbin Liu <liuhangbin@gmail.com>
Date:   Thu May 8 03:54:14 2025 +0000

    tools/net/ynl: ethtool: fix crash when Hardware Clock info is missing

    Fix a crash in the ethtool YNL implementation when Hardware Clock information
    is not present in the response. This ensures graceful handling of devices or
    drivers that do not provide this optional field. e.g.

      Traceback (most recent call last):
        File "/net/tools/net/ynl/pyynl/./ethtool.py", line 438, in <module>
          main()
          ~~~~^^
        File "/net/tools/net/ynl/pyynl/./ethtool.py", line 341, in main
          print(f'PTP Hardware Clock: {tsinfo["phc-index"]}')
                                       ~~~~~~^^^^^^^^^^^^^
      KeyError: 'phc-index'

    Fixes: f3d07b0 ("tools: ynl: ethtool testing tool")
    Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
    Acked-by: Stanislav Fomichev <sdf@fomichev.me>
    Link: https://patch.msgid.link/20250508035414.82974-1-liuhangbin@gmail.com
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Signed-off-by: Hangbin Liu <haliu@redhat.com>

Author: Hangbin Liu

tools/net/ynl/pyynl/ethtool.py

@@ -338,16 +338,24 @@ def main():
         print('Capabilities:')
         [print(f'\t{v}') for v in bits_to_dict(tsinfo['timestamping'])]
 
-        print(f'PTP Hardware Clock: {tsinfo["phc-index"]}')
+        print(f'PTP Hardware Clock: {tsinfo.get("phc-index", "none")}')
 
-        print('Hardware Transmit Timestamp Modes:')
-        [print(f'\t{v}') for v in bits_to_dict(tsinfo['tx-types'])]
+        if 'tx-types' in tsinfo:
+            print('Hardware Transmit Timestamp Modes:')
+            [print(f'\t{v}') for v in bits_to_dict(tsinfo['tx-types'])]
+        else:
+            print('Hardware Transmit Timestamp Modes: none')
+
+        if 'rx-filters' in tsinfo:
+            print('Hardware Receive Filter Modes:')
+            [print(f'\t{v}') for v in bits_to_dict(tsinfo['rx-filters'])]
+        else:
+            print('Hardware Receive Filter Modes: none')
 
-        print('Hardware Receive Filter Modes:')
-        [print(f'\t{v}') for v in bits_to_dict(tsinfo['rx-filters'])]
+        if 'stats' in tsinfo and tsinfo['stats']:
+            print('Statistics:')
+            [print(f'\t{k}: {v}') for k, v in tsinfo['stats'].items()]
 
-        print('Statistics:')
-        [print(f'\t{k}: {v}') for k, v in tsinfo['stats'].items()]
         return
 
     print(f'Settings for {args.device}:')