tests: DPP and PKEX with mismatching code limit

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

tests/hwsim/test_dpp.py

@@ -1578,6 +1578,49 @@ def test_dpp_pkex_code_mismatch(dev, apdev):
     if ev is None:
         raise Exception("DPP authentication did not succeed (Responder, retry)")
 
+def test_dpp_pkex_code_mismatch_limit(dev, apdev):
+    """DPP and PKEX with mismatching code limit"""
+    check_dpp_capab(dev[0])
+    check_dpp_capab(dev[1])
+
+    cmd = "DPP_BOOTSTRAP_GEN type=pkex"
+    res = dev[0].request(cmd)
+    if "FAIL" in res:
+        raise Exception("Failed to generate bootstrapping info")
+    id0 = int(res)
+
+    cmd = "DPP_BOOTSTRAP_GEN type=pkex"
+    res = dev[1].request(cmd)
+    if "FAIL" in res:
+        raise Exception("Failed to generate bootstrapping info")
+    id1 = int(res)
+
+    cmd = "DPP_PKEX_ADD own=%d identifier=test code=secret" % (id0)
+    res = dev[0].request(cmd)
+    if "FAIL" in res:
+        raise Exception("Failed to set PKEX data (responder)")
+    cmd = "DPP_LISTEN 2437"
+    if "OK" not in dev[0].request(cmd):
+        raise Exception("Failed to start listen operation")
+
+    for i in range(5):
+        dev[0].dump_monitor()
+        dev[1].dump_monitor()
+        cmd = "DPP_PKEX_ADD own=%d identifier=test init=1 code=unknown" % id1
+        res = dev[1].request(cmd)
+        if "FAIL" in res:
+            raise Exception("Failed to set PKEX data (initiator)")
+
+        ev = dev[0].wait_event(["DPP-FAIL"], timeout=5)
+        if ev is None:
+            raise Exception("Failure not reported")
+        if "possible PKEX code mismatch" not in ev:
+            raise Exception("Unexpected result: " + ev)
+
+    ev = dev[0].wait_event(["DPP-PKEX-T-LIMIT"], timeout=1)
+    if ev is None:
+        raise Exception("PKEX t limit not reported")
+
 def test_dpp_pkex_curve_mismatch(dev, apdev):
     """DPP and PKEX with mismatching curve"""
     check_dpp_capab(dev[0])