Verify that CSA can be performed on the first link of an AP MLD and further
check that traffic still continues even after channel switch.
Finally, check again that a subsequent CSA can be performed without
affecting the data traffic.
Signed-off-by: Aditya Kumar Singh <quic_adisi@xxxxxxxxxxx>
---
tests/hwsim/test_eht.py | 68 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 68 insertions(+)
diff --git a/tests/hwsim/test_eht.py b/tests/hwsim/test_eht.py
index 1804c2250ca0..7fce52a6065d 100644
--- a/tests/hwsim/test_eht.py
+++ b/tests/hwsim/test_eht.py
@@ -1732,3 +1732,71 @@ def test_eht_mld_and_mlds(dev, apdev):
logger.info("Assigned AIDs: " + str(aid))
if len(set(aid)) != 2:
raise Exception("AP MLD did not assign unique AID to each non-AP MLD")
+
+def mlo_perform_csa(hapd, command, freq):
+ match_str = "freq=" + str(freq)
+ hapd.request(command)
+
+ ev = hapd.wait_event(["CTRL-EVENT-STARTED-CHANNEL-SWITCH"], timeout=10)
+ if ev is None:
+ raise Exception("Channel switch start event not seen")
+ if match_str not in ev:
+ raise Exception("Unexpected channel in CS started")
+
+ ev = hapd.wait_event(["CTRL-EVENT-CHANNEL-SWITCH"], timeout=10)
+ if ev is None:
+ raise Exception("Channel switch completion event not seen")
+ if match_str not in ev:
+ raise Exception("Unexpected channel in CS completed")
+
+ ev = hapd.wait_event(["AP-CSA-FINISHED"], timeout=10)
+ if ev is None:
+ raise Exception("CSA finished event timed out")
+ if match_str not in ev:
+ raise Exception("Unexpected channel in CSA finished event")
+ time.sleep(0.5)
+
+def test_eht_mlo_csa(dev, apdev):
+ """EHT MLD AP connected to non-AP MLD. Seamless channel switch"""
+ csa_supported(dev[0])
+
+ with HWSimRadio(use_mlo=True) as (hapd_radio, hapd_iface), \
+ HWSimRadio(use_mlo=True) as (wpas_radio, wpas_iface):
+
+ wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
+ wpas.interface_add(wpas_iface)
+
+ ssid = "mld_ap"
+ passphrase = 'qwertyuiop'
+
+ params = eht_mld_ap_wpa2_params(ssid, passphrase,
+ key_mgmt="SAE", mfp="2", pwe='1')
+ hapd0 = eht_mld_enable_ap(hapd_iface, params)
+
+ params['channel'] = '6'
+ hapd1 = eht_mld_enable_ap(hapd_iface, params)
+
+ wpas.set("sae_pwe", "1")
+ wpas.connect(ssid, sae_password=passphrase, scan_freq="2412 2437",
+ key_mgmt="SAE", ieee80211w="2")
+
+ eht_verify_status(wpas, hapd0, 2412, 20, is_ht=True, mld=True,
+ valid_links=3, active_links=3)
+ eht_verify_wifi_version(wpas)
+ traffic_test(wpas, hapd0)
+
+ logger.info("Perform CSA on 1st link")
+ mlo_perform_csa(hapd0, "CHAN_SWITCH 5 2462 ht he eht blocktx",
+ 2462)
+
+ logger.info("Test traffic after 1st link CSA completes")
+ traffic_test(wpas, hapd0)
+
+ logger.info("Perform CSA on 1st link and bring it back to original channel")
+ mlo_perform_csa(hapd0, "CHAN_SWITCH 5 2412 ht he eht blocktx",
+ 2412)
+
+ logger.info("Test traffic again after 1st link CSA completes")
+ traffic_test(wpas, hapd0)
+
+ #TODO: CSA on non-first link
base-commit: eecaceed8f03cee676d47dd9fb70efd25d50e3e9
--
2.25.1
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