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tests: Make scan_hidden more robust under heavy CPU load

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It is possible for the Probe Response frame wait to time out when active
scanning is used under heavy CPU load. Make this test case more robust
by trying multiple times before declaring the scan for a hidden SSID to
have failed.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2015-01-02 18:21:25 +02:00
parent 2ec82e67c1
commit 29bac7cb89
1 changed files with 10 additions and 2 deletions
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12
tests/hwsim/test_scan.py
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@ -427,8 +427,16 @@ def test_scan_hidden(dev, apdev):
if "test-scan" in dev[0].request("SCAN_RESULTS"): if "test-scan" in dev[0].request("SCAN_RESULTS"):
raise Exception("BSS unexpectedly found in scan") raise Exception("BSS unexpectedly found in scan")
check_scan(dev[0], "scan_id=%d,%d,%d freq=2412 use_id=1" % (id1, id2, id3)) # Allow multiple attempts to be more robust under heavy CPU load that can
if "test-scan" not in dev[0].request("SCAN_RESULTS"): # result in Probe Response frames getting sent only after the station has
# already stopped waiting for the response on the channel.
found = False
for i in range(10):
check_scan(dev[0], "scan_id=%d,%d,%d freq=2412 use_id=1" % (id1, id2, id3))
if "test-scan" in dev[0].request("SCAN_RESULTS"):
found = True
break
if not found:
raise Exception("BSS not found in scan") raise Exception("BSS not found in scan")
if "FAIL" not in dev[0].request("SCAN scan_id=1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17"): if "FAIL" not in dev[0].request("SCAN scan_id=1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17"):