[PATCH rdma-core 4/5] tests: Add RDMACM synchronous traffic test

[Noa Osherovich <noaos@mellanox.com>]

From: Maxim Chicherin <maximc@mellanox.com>

This test creates active and passive sides for RDMACM communication
and validates received messages.

Signed-off-by: Maxim Chicherin <maximc@mellanox.com>
---
 tests/CMakeLists.txt  |  2 ++
 tests/rdmacm_utils.py | 43 ++++++++++++++++++++++++++++++++
 tests/test_rdmacm.py  | 57 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 102 insertions(+)
 mode change 100644 => 100755 tests/CMakeLists.txt
 create mode 100755 tests/rdmacm_utils.py
 create mode 100755 tests/test_rdmacm.py

diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
old mode 100644
new mode 100755
index 960276230860..0d81d1a98fb7
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -3,6 +3,7 @@
 
 rdma_python_test(tests
   __init__.py
+  rdmacm_utils.py
   test_addr.py
   base.py
   test_cq.py
@@ -11,6 +12,7 @@ rdma_python_test(tests
   test_pd.py
   test_qp.py
   test_odp.py
+  test_rdmacm.py
   utils.py
   )
 
diff --git a/tests/rdmacm_utils.py b/tests/rdmacm_utils.py
new file mode 100755
index 000000000000..59b627393e4f
--- /dev/null
+++ b/tests/rdmacm_utils.py
@@ -0,0 +1,43 @@
+# SPDX-License-Identifier: (GPL-2.0 OR Linux-OpenIB)
+# Copyright (c) 2019 Mellanox Technologies, Inc. All rights reserved.  See COPYING file
+"""
+Provide some useful helper function for pyverbs rdmacm' tests.
+"""
+from tests.base import CMResources
+from tests.utils import validate
+
+
+def active_side(node):
+    client = CMResources(dst=node)
+    client.pre_run()
+    connected_id = client.cmid
+    send_msg = 'c' * client.msg_size
+    for _ in range(client.num_msgs):
+        client.mr.write(send_msg, client.msg_size)
+        connected_id.post_send(client.mr)
+        while connected_id.get_send_comp() is None:
+            pass
+        connected_id.post_recv(client.mr)
+        while connected_id.get_recv_comp() is None:
+            pass
+        msg_received = client.mr.read(client.msg_size, 0)
+        validate(msg_received, False, client.msg_size)
+    connected_id.disconnect()
+
+
+def passive_side(node):
+    server = CMResources(src=node)
+    server.pre_run()
+    connected_id = server.new_id
+    send_msg = 's' * server.msg_size
+    for _ in range(server.num_msgs):
+        connected_id.post_recv(server.mr)
+        while connected_id.get_recv_comp() is None:
+            pass
+        msg_received = server.mr.read(server.msg_size, 0)
+        validate(msg_received, True, server.msg_size)
+        server.mr.write(send_msg, server.msg_size)
+        connected_id.post_send(server.mr)
+        while connected_id.get_send_comp() is None:
+            pass
+    connected_id.disconnect()
diff --git a/tests/test_rdmacm.py b/tests/test_rdmacm.py
new file mode 100755
index 000000000000..e435c635d7b2
--- /dev/null
+++ b/tests/test_rdmacm.py
@@ -0,0 +1,57 @@
+from tests.rdmacm_utils import active_side, passive_side
+from tests.base import RDMATestCase
+from multiprocessing import Process
+import pyverbs.device as d
+import subprocess
+import unittest
+import json
+
+
+class CMTestCase(RDMATestCase):
+    def setUp(self):
+        if self.dev_name is not None:
+            net_name = self.get_net_name(self.dev_name)
+            try:
+                self.ip_addr = self.get_ip_address(net_name)
+            except KeyError:
+                raise unittest.SkipTest('Device {} has no net interface'
+                                        .format(self.dev_name))
+        else:
+            dev_list = d.get_device_list()
+            for dev in dev_list:
+                net_name = self.get_net_name(dev.name.decode())
+                try:
+                    self.ip_addr = self.get_ip_address(net_name)
+                except IndexError:
+                    continue
+                else:
+                    self.dev_name = dev.name.decode()
+                    break
+            if self.dev_name is None:
+                raise unittest.SkipTest('No devices with net interface')
+        super().setUp()
+
+    @staticmethod
+    def get_net_name(dev):
+        process = subprocess.Popen(['ls', '/sys/class/infiniband/{}/device/net/'
+                                   .format(dev)], stdout=subprocess.PIPE)
+        out, err = process.communicate()
+        return out.decode().split('\n')[0]
+
+    @staticmethod
+    def get_ip_address(ifname):
+        process = subprocess.Popen(['ip', '-j', 'addr', 'show', ifname],
+                                   stdout=subprocess.PIPE)
+        out, err = process.communicate()
+        loaded_json = json.loads(out.decode())
+        interface = loaded_json[0]['addr_info'][0]['local']
+        if 'fe80::' in interface:
+            interface = interface + '%' + ifname
+        return interface
+
+    def test_rdmacm_sync_traffic(self):
+        ps = Process(target=passive_side, args=[self.ip_addr])
+        ps.start()
+        ps.join(1)
+        active_side(self.ip_addr)
+        ps.join()
-- 
2.21.0