tests: Add mesh path test

Signed-off-by: Masashi Honma <masashi.honma@gmail.com>

tests/hwsim/test_wmediumd.py

@@ -4,9 +4,12 @@
 # This software may be distributed under the terms of the BSD license.
 # See README for more details.
 
-import tempfile, os, subprocess, errno
+import tempfile, os, subprocess, errno, hwsim_utils
 from utils import HwsimSkip
 from test_ap_open import _test_ap_open
+from test_wpas_mesh import check_mesh_support, check_mesh_group_added
+from test_wpas_mesh import check_mesh_peer_connected, add_open_mesh_network
+from test_wpas_mesh import check_mesh_group_removed
 
 CFG = """
 ifaces :
@@ -18,6 +21,19 @@ ifaces :
 };
 """
 
+CFG2 = """
+ifaces :
+{
+    ids = ["%s", "%s", "%s"];
+
+    links = (
+        (0, 1, 50),
+        (0, 2, 50),
+        (1, 2, -10)
+    );
+};
+"""
+
 def output_wmediumd_log(p, params, data):
     log_file = open(os.path.abspath(os.path.join(params['logdir'],
                                                  'wmediumd.log')), 'a')
@@ -67,3 +83,90 @@ def test_wmediumd_simple(dev, apdev, params):
         _test_ap_open(dev, apdev)
     finally:
         os.unlink(fn)
+
+def test_wmediumd_path_simple(dev, apdev, params):
+    """test a mesh path"""
+    # 0 and 1 is connected
+    # 0 and 2 is connected
+    # 1 and 2 is not connected
+    # 1 --- 0 --- 2
+    # |           |
+    # +-----X-----+
+    # This tests if 1 and 2 can communicate each other via 0.
+    fd, fn = tempfile.mkstemp()
+    try:
+        f = os.fdopen(fd, 'w')
+        f.write(CFG2 % (dev[0].own_addr(), dev[1].own_addr(),
+                        dev[2].own_addr()))
+        f.close()
+        p = start_wmediumd(fn, params)
+        try:
+            _test_wmediumd_path_simple(dev, apdev)
+        finally:
+            stop_wmediumd(p, params)
+    finally:
+        os.unlink(fn)
+
+def _test_wmediumd_path_simple(dev, apdev):
+    for i in range(0, 3):
+        check_mesh_support(dev[i])
+        add_open_mesh_network(dev[i], freq="2462", basic_rates="60 120 240")
+
+    # Check for mesh joined
+    for i in range(0, 3):
+        check_mesh_group_added(dev[i])
+
+        state = dev[i].get_status_field("wpa_state")
+        if state != "COMPLETED":
+            raise Exception("Unexpected wpa_state on dev" + str(i) + ": " + state)
+
+        mode = dev[i].get_status_field("mode")
+        if mode != "mesh":
+            raise Exception("Unexpected mode: " + mode)
+
+    # Check for peer connected
+    check_mesh_peer_connected(dev[0])
+    check_mesh_peer_connected(dev[0])
+    check_mesh_peer_connected(dev[1])
+    check_mesh_peer_connected(dev[2])
+
+    # Test connectivity 1->2 and 2->1
+    hwsim_utils.test_connectivity(dev[1], dev[2])
+
+    # Check mpath table on 0
+    res, data = dev[0].cmd_execute(['iw', dev[0].ifname, 'mpath', 'dump'])
+    if res != 0:
+        raise Exception("iw command failed on dev0")
+    if data.find(dev[1].own_addr() + ' ' +  dev[1].own_addr()) == -1 or \
+       data.find(dev[2].own_addr() + ' ' +  dev[2].own_addr()) == -1:
+        raise Exception("mpath not found on dev0:\n" + data)
+    if data.find(dev[0].own_addr()) > -1:
+        raise Exception("invalid mpath found on dev0:\n" + data)
+
+    # Check mpath table on 1
+    res, data = dev[1].cmd_execute(['iw', dev[1].ifname, 'mpath', 'dump'])
+    if res != 0:
+        raise Exception("iw command failed on dev1")
+    if data.find(dev[0].own_addr() + ' ' +  dev[0].own_addr()) == -1 or \
+       data.find(dev[2].own_addr() + ' ' +  dev[0].own_addr()) == -1:
+        raise Exception("mpath not found on dev1:\n" + data)
+    if data.find(dev[2].own_addr() + ' ' +  dev[2].own_addr()) > -1 or \
+       data.find(dev[1].own_addr()) > -1:
+        raise Exception("invalid mpath found on dev1:\n" + data)
+
+    # Check mpath table on 2
+    res, data = dev[2].cmd_execute(['iw', dev[2].ifname, 'mpath', 'dump'])
+    if res != 0:
+        raise Exception("iw command failed on dev2")
+    if data.find(dev[0].own_addr() + ' ' +  dev[0].own_addr()) == -1 or \
+       data.find(dev[1].own_addr() + ' ' +  dev[0].own_addr()) == -1:
+        raise Exception("mpath not found on dev2:\n" + data)
+    if data.find(dev[1].own_addr() + ' ' +  dev[1].own_addr()) > -1 or \
+       data.find(dev[2].own_addr()) > -1:
+        raise Exception("invalid mpath found on dev2:\n" + data)
+
+    # remove mesh groups
+    for i in range(0, 3):
+        dev[i].mesh_group_remove()
+        check_mesh_group_removed(dev[i])
+        dev[i].dump_monitor()