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tests: Scan result update changing last_scan_res and connect_work

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This verifies that last_scan_res and connect work pointers to BSS
entries get updated when scan result update ends up removing or
reallocating a BSS entry.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2014-10-28 00:24:11 +02:00 committed by Jouni Malinen
parent a7f5271d52
commit 5e29a90079
1 changed files with 87 additions and 0 deletions
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87
tests/hwsim/test_scan.py
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@ -11,6 +11,7 @@ import os
import subprocess
import hostapd
from wpasupplicant import WpaSupplicant
def check_scan(dev, params, other_started=False):
if not other_started:
@ -322,3 +323,89 @@ def test_scan_hidden(dev, apdev):
check_scan(dev[0], "scan_id=%d,%d,%d freq=2412 use_id=1" % (id1, id2, id3))
if "test-scan" not in dev[0].request("SCAN_RESULTS"):
raise Exception("BSS not found in scan")
def test_scan_and_bss_entry_removed(dev, apdev):
"""Last scan result and connect work processing on BSS entry update"""
hapd = hostapd.add_ap(apdev[0]['ifname'], { "ssid": "open",
"eap_server": "1",
"wps_state": "2" })
bssid = apdev[0]['bssid']
wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
wpas.interface_add("wlan5", drv_params="force_connect_cmd=1")
# Add a BSS entry
dev[0].scan_for_bss(bssid, freq="2412")
wpas.scan_for_bss(bssid, freq="2412")
# Start a connect radio work with a blocking entry preventing this from
# proceeding; this stores a pointer to the selected BSS entry.
id = dev[0].request("RADIO_WORK add block-work")
w_id = wpas.request("RADIO_WORK add block-work")
dev[0].wait_event(["EXT-RADIO-WORK-START"], timeout=1)
wpas.wait_event(["EXT-RADIO-WORK-START"], timeout=1)
nid = dev[0].connect("open", key_mgmt="NONE", scan_freq="2412",
wait_connect=False)
w_nid = wpas.connect("open", key_mgmt="NONE", scan_freq="2412",
wait_connect=False)
time.sleep(0.1)
# Remove the BSS entry
dev[0].request("BSS_FLUSH 0")
wpas.request("BSS_FLUSH 0")
# Allow the connect radio work to continue. The bss entry stored in the
# pending connect work is now stale. This will result in the connection
# attempt failing since the BSS entry does not exist.
dev[0].request("RADIO_WORK done " + id)
wpas.request("RADIO_WORK done " + w_id)
ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=1)
if ev is not None:
raise Exception("Unexpected connection")
dev[0].remove_network(nid)
ev = wpas.wait_event(["CTRL-EVENT-CONNECTED"], timeout=1)
if ev is not None:
raise Exception("Unexpected connection")
wpas.remove_network(w_nid)
time.sleep(0.5)
dev[0].request("BSS_FLUSH 0")
wpas.request("BSS_FLUSH 0")
# Add a BSS entry
dev[0].scan_for_bss(bssid, freq="2412")
wpas.scan_for_bss(bssid, freq="2412")
# Start a connect radio work with a blocking entry preventing this from
# proceeding; this stores a pointer to the selected BSS entry.
id = dev[0].request("RADIO_WORK add block-work")
w_id = wpas.request("RADIO_WORK add block-work")
dev[0].wait_event(["EXT-RADIO-WORK-START"], timeout=1)
wpas.wait_event(["EXT-RADIO-WORK-START"], timeout=1)
# Schedule a connection based on the current BSS entry.
dev[0].connect("open", key_mgmt="NONE", scan_freq="2412",
wait_connect=False)
wpas.connect("open", key_mgmt="NONE", scan_freq="2412",
wait_connect=False)
# Update scan results with results that have longer set of IEs so that new
# memory needs to be allocated for the BSS entry.
hapd.request("WPS_PBC")
time.sleep(0.1)
subprocess.call(['iw', dev[0].ifname, 'scan', 'trigger', 'freq', '2412'])
subprocess.call(['iw', wpas.ifname, 'scan', 'trigger', 'freq', '2412'])
time.sleep(0.1)
# Allow the connect radio work to continue. The bss entry stored in the
# pending connect work becomes stale during the scan and it must have been
# updated for the connection to work.
dev[0].request("RADIO_WORK done " + id)
wpas.request("RADIO_WORK done " + w_id)
ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=15)
if ev is None:
raise Exception("No connection (sme-connect)")
ev = wpas.wait_event(["CTRL-EVENT-CONNECTED"], timeout=15)
if ev is None:
raise Exception("No connection (connect)")