selftests: drv-net: psp: add assertions on core-tracked psp dev stats

Add assertions to existing test cases to cover key rotations and
'stale-events'.

Signed-off-by: Daniel Zahka <daniel.zahka@gmail.com>
Link: https://patch.msgid.link/20251106002608.1578518-3-daniel.zahka@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/tools/testing/selftests/drivers/net/psp.py b/tools/testing/selftests/drivers/net/psp.py
index 4ae7a785ff10a34602abc4ed8bcfe26aa984ade6..06559ef49b9a5ed581cc7a9ecfdec15d06d4dea7 100755 (executable)
--- a/tools/testing/selftests/drivers/net/psp.py
+++ b/tools/testing/selftests/drivers/net/psp.py
@@ -109,6 +109,10 @@ def _check_data_outq(s, exp_len, force_wait=False):
         time.sleep(0.01)
     ksft_eq(outq, exp_len)
 
+
+def _get_stat(cfg, key):
+    return cfg.pspnl.get_stats({'dev-id': cfg.psp_dev_id})[key]
+
 #
 # Test case boiler plate
 #
@@ -171,11 +175,16 @@ def dev_rotate(cfg):
     """ Test key rotation """
     _init_psp_dev(cfg)
 
+    prev_rotations = _get_stat(cfg, 'key-rotations')
+
     rot = cfg.pspnl.key_rotate({"id": cfg.psp_dev_id})
     ksft_eq(rot['id'], cfg.psp_dev_id)
     rot = cfg.pspnl.key_rotate({"id": cfg.psp_dev_id})
     ksft_eq(rot['id'], cfg.psp_dev_id)
 
+    cur_rotations = _get_stat(cfg, 'key-rotations')
+    ksft_eq(cur_rotations, prev_rotations + 2)
+
 
 def dev_rotate_spi(cfg):
     """ Test key rotation and SPI check """
@@ -475,6 +484,7 @@ def data_stale_key(cfg):
     """ Test send on a double-rotated key """
     _init_psp_dev(cfg)
 
+    prev_stale = _get_stat(cfg, 'stale-events')
     s = _make_psp_conn(cfg)
     try:
         rx_assoc = cfg.pspnl.rx_assoc({"version": 0,
@@ -495,6 +505,9 @@ def data_stale_key(cfg):
         cfg.pspnl.key_rotate({"id": cfg.psp_dev_id})
         cfg.pspnl.key_rotate({"id": cfg.psp_dev_id})
 
+        cur_stale = _get_stat(cfg, 'stale-events')
+        ksft_gt(cur_stale, prev_stale)
+
         s.send(b'0123456789' * 200)
         _check_data_outq(s, 2000, force_wait=True)
     finally: