Revert "tools/net/ynl: improve async notification handling"

This reverts commit 1bf70e6c3a5346966c25e0a1ff492945b25d3f80.

This modification to check_ntf() is being reverted so that its behaviour
remains equivalent to ynl_ntf_check() in the C YNL. Instead a new
poll_ntf() will be added in a separate patch.

Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20241113090843.72917-2-donald.hunter@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 3 insertions, 7 deletions

diff --git a/tools/net/ynl/cli.py b/tools/net/ynl/cli.py
index 5e2913a7f3e4..873463dbdcc0 100755
--- a/tools/net/ynl/cli.py
+++ b/tools/net/ynl/cli.py
@@ -7,7 +7,6 @@ import pathlib
 import pprint
 import sys
 import time
-import signal
 
 sys.path.append(pathlib.Path(__file__).resolve().parent.as_posix())
 from lib import YnlFamily, Netlink, NlError
@@ -21,8 +20,6 @@ class YnlEncoder(json.JSONEncoder):
             return list(obj)
         return json.JSONEncoder.default(self, obj)
 
-def handle_timeout(sig, frame):
-    exit(0)
 
 def main():
     description = """
@@ -87,8 +84,7 @@ def main():
         ynl.ntf_subscribe(args.ntf)
 
     if args.sleep:
-        signal.signal(signal.SIGALRM, handle_timeout)
-        signal.alarm(args.sleep)
+        time.sleep(args.sleep)
 
     if args.list_ops:
         for op_name, op in ynl.ops.items():
@@ -113,8 +109,8 @@ def main():
         exit(1)
 
     if args.ntf:
-        for msg in ynl.check_ntf():
-            output(msg)
+        ynl.check_ntf()
+        output(ynl.async_msg_queue)
 
 
 if __name__ == "__main__":