[RESEND PATCH 09/10] tests: DFS test for wpa_supplicant mesh

[Markus Theil]

Add a test with uses a DFS channel, waits for CAC
afterwards successfull mesh join and then triggers
a radar event and check if the mesh comes up again
on the same device.

Signed-off-by: Markus Theil <markus.theil at tu-ilmenau.de>
---
 tests/hwsim/test_wpas_mesh.py | 51 +++++++++++++++++++++++++++++++++--
 1 file changed, 49 insertions(+), 2 deletions(-)

diff --git a/tests/hwsim/test_wpas_mesh.py b/tests/hwsim/test_wpas_mesh.py
index bc07f5e25..2d7247905 100644
--- a/tests/hwsim/test_wpas_mesh.py
+++ b/tests/hwsim/test_wpas_mesh.py
@@ -80,8 +80,18 @@ def check_mesh_scan(dev, params, other_started=False, beacon_int=0):
     if '[MESH]' not in bss['flags']:
         raise Exception("BSS output did not include MESH flag")
 
-def check_mesh_group_added(dev):
-    ev = dev.wait_event(["MESH-GROUP-STARTED"])
+def check_dfs_started(dev, timeout=10):
+    ev = dev.wait_event(["DFS-CAC-START"], timeout=timeout)
+    if ev is None:
+        raise Exception("Test exception: CAC did not start")
+
+def check_dfs_finished(dev, timeout=70):
+    ev = dev.wait_event(["DFS-CAC-COMPLETED"], timeout=timeout)
+    if ev is None:
+        raise Exception("Test exception: CAC did not finish")
+
+def check_mesh_group_added(dev, timeout=10):
+    ev = dev.wait_event(["MESH-GROUP-STARTED"], timeout=timeout)
     if ev is None:
         raise Exception("Test exception: Couldn't join mesh")
 
@@ -91,6 +101,10 @@ def check_mesh_group_removed(dev):
     if ev is None:
         raise Exception("Test exception: Couldn't leave mesh")
 
+def check_regdom_change(dev, timeout=10):
+    ev = dev.wait_event(["CTRL-EVENT-REGDOM-CHANGE"], timeout=timeout)
+    if ev is None:
+        raise Exception("Test exception: No regdom change happened.")
 
 def check_mesh_peer_connected(dev, timeout=10):
     ev = dev.wait_event(["MESH-PEER-CONNECTED"], timeout=timeout)
@@ -167,6 +181,39 @@ def test_wpas_mesh_group_remove(dev):
     check_mesh_group_removed(dev[0])
     dev[0].mesh_group_remove()
 
+def dfs_simulate_radar(dev):
+    logger.info("Trigger a simulated radar event")
+    phyname = dev.get_driver_status_field("phyname")
+    radar_file = '/sys/kernel/debug/ieee80211/' + phyname + '/hwsim/dfs_simulate_radar'
+    with open(radar_file, 'w') as f:
+        f.write('1')
+
+ at long_duration_test
+def test_wpas_mesh_peer_connected_dfs(dev):
+    """wpa_supplicant MESH peer connected"""
+    dev[0].set("country", "DE")
+    dev[1].set("country", "DE")
+
+    check_regdom_change(dev[0])
+    check_regdom_change(dev[1])
+
+    check_mesh_support(dev[0])
+    add_open_mesh_network(dev[0], freq="5500", beacon_int=160)
+    add_open_mesh_network(dev[1], freq="5500", beacon_int=160)
+    check_dfs_started(dev[0])
+    check_dfs_finished(dev[0])
+    check_mesh_joined_connected(dev, timeout0=10)
+
+    dfs_simulate_radar(dev[0])
+
+    check_mesh_group_added(dev[0], timeout=75)
+
+    dev[0].set("country", "00")
+    dev[1].set("country", "00")
+
+    check_regdom_change(dev[0])
+    check_regdom_change(dev[1])
+
 def test_wpas_mesh_peer_connected(dev):
     """wpa_supplicant MESH peer connected"""
     check_mesh_support(dev[0])
-- 
2.27.0