session: segment manager refactor

- use valloc as a 'central' segment baseva manager
- use per segment manager segment pools and use rwlocks to guard them
- add session test that exercises segment creation
- embed segment manager properties into application since they're shared
- fix rw locks

Change-Id: I761164c147275d9e8a926f1eda395e090d231f9a
Signed-off-by: Florin Coras <fcoras@cisco.com>

test/test_session.py

@@ -3,6 +3,7 @@
 import unittest
 
 from framework import VppTestCase, VppTestRunner
+from vpp_ip_route import VppIpTable, VppIpRoute, VppRoutePath
 
 
 class TestSession(VppTestCase):
@@ -15,7 +16,34 @@ class TestSession(VppTestCase):
     def setUp(self):
         super(TestSession, self).setUp()
 
+        self.vapi.session_enable_disable(is_enabled=1)
+        self.create_loopback_interfaces(range(2))
+
+        table_id = 0
+
+        for i in self.lo_interfaces:
+            i.admin_up()
+
+            if table_id != 0:
+                tbl = VppIpTable(self, table_id)
+                tbl.add_vpp_config()
+
+            i.set_table_ip4(table_id)
+            i.config_ip4()
+            table_id += 1
+
+        # Configure namespaces
+        self.vapi.app_namespace_add(namespace_id="0",
+                                    sw_if_index=self.loop0.sw_if_index)
+        self.vapi.app_namespace_add(namespace_id="1",
+                                    sw_if_index=self.loop1.sw_if_index)
+
     def tearDown(self):
+        for i in self.lo_interfaces:
+            i.unconfig_ip4()
+            i.set_table_ip4(0)
+            i.admin_down()
+
         super(TestSession, self).tearDown()
         self.vapi.session_enable_disable(is_enabled=1)
 
@@ -25,7 +53,41 @@ class TestSession(VppTestCase):
 
         if error:
             self.logger.critical(error)
-        self.assertEqual(error.find("Failed"), -1)
+        self.assertEqual(error.find("failed"), -1)
+
+    def test_segment_manager_alloc(self):
+        """ Session Segment Manager Multiple Segment Allocation """
+
+        # Add inter-table routes
+        ip_t01 = VppIpRoute(self, self.loop1.local_ip4, 32,
+                            [VppRoutePath("0.0.0.0",
+                                          0xffffffff,
+                                          nh_table_id=1)])
+        ip_t10 = VppIpRoute(self, self.loop0.local_ip4, 32,
+                            [VppRoutePath("0.0.0.0",
+                                          0xffffffff,
+                                          nh_table_id=0)], table_id=1)
+        ip_t01.add_vpp_config()
+        ip_t10.add_vpp_config()
+
+        # Start builtin server and client with small private segments
+        uri = "tcp://" + self.loop0.local_ip4 + "/1234"
+        error = self.vapi.cli("test echo server appns 0 fifo-size 64 " +
+                              "private-segment-size 1m uri " + uri)
+        if error:
+            self.logger.critical(error)
+            self.assertEqual(error.find("failed"), -1)
+
+        error = self.vapi.cli("test echo client nclients 100 appns 1 " +
+                              "no-output fifo-size 64 syn-timeout 2 " +
+                              "private-segment-size 1m uri " + uri)
+        if error:
+            self.logger.critical(error)
+            self.assertEqual(error.find("failed"), -1)
+
+        # Delete inter-table routes
+        ip_t01.remove_vpp_config()
+        ip_t10.remove_vpp_config()
 
 if __name__ == '__main__':
     unittest.main(testRunner=VppTestRunner)