routing_table_unittest.cc - platform/system/connectivity/shill - Gitiles

 // Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 #include <sys/socket.h>
 #include <linux/rtnetlink.h>

 #include <base/logging.h>
 #include <base/stl_util-inl.h>
 #include <gtest/gtest.h>
 #include <gmock/gmock.h>

 #include "shill/byte_string.h"
 #include "shill/mock_control.h"
 #include "shill/mock_sockets.h"
 #include "shill/routing_table.h"
 #include "shill/routing_table_entry.h"
 #include "shill/rtnl_handler.h"
 #include "shill/rtnl_message.h"

 using testing::_;
 using testing::Return;
 using testing::Test;

 namespace shill {

 class TestEventDispatcher : public EventDispatcher {
  public:
   virtual IOHandler *CreateInputHandler(
       int /*fd*/,
       Callback1<InputData*>::Type */*callback*/) {
     return NULL;
   }
 };

 class RoutingTableTest : public Test {
  public:
   RoutingTableTest() : routing_table_(RoutingTable::GetInstance()) {}

   base::hash_map<int, std::vector<RoutingTableEntry> > *GetRoutingTables() {
     return &routing_table_->tables_;
   }

   void SendRouteMsg(RTNLMessage::Mode mode,
                     uint32 interface_index,
                     const RoutingTableEntry &entry);

   virtual void TearDown() {
     RTNLHandler::GetInstance()->Stop();
   }

  protected:
   static const int kTestSocket;
   static const uint32 kTestDeviceIndex0;
   static const uint32 kTestDeviceIndex1;
   static const char kTestDeviceName0[];
   static const char kTestNetAddress0[];
   static const char kTestNetAddress1[];

   void StartRTNLHandler();
   void StopRTNLHandler();

   MockSockets sockets_;
   RoutingTable *routing_table_;
   TestEventDispatcher dispatcher_;
 };

 const int RoutingTableTest::kTestSocket = 123;
 const uint32 RoutingTableTest::kTestDeviceIndex0 = 12345;
 const uint32 RoutingTableTest::kTestDeviceIndex1 = 67890;
 const char RoutingTableTest::kTestDeviceName0[] = "test-device0";
 const char RoutingTableTest::kTestNetAddress0[] = "192.168.1.1";
 const char RoutingTableTest::kTestNetAddress1[] = "192.168.1.2";


 MATCHER_P4(IsRoutingPacket, mode, index, entry, flags, "") {
   // NB: Matchers don't get passed multiple arguments, so we can
   //     get the address of a Send(), its length, but not both.
   //     We have to punt and assume the length is correct -- which
   //     should already be tested in rtnl_message_unittest.
   struct nlmsghdr hdr;
   memcpy(&hdr, arg, sizeof(hdr));

   RTNLMessage msg;
   if (!msg.Decode(ByteString(reinterpret_cast<const unsigned char *>(arg),
                              hdr.nlmsg_len))) {
     return false;
   }

   const RTNLMessage::RouteStatus &status = msg.route_status();

   uint32 oif;
   uint32 priority;

   return
     msg.type() == RTNLMessage::kTypeRoute &&
     msg.family() == entry.gateway.family() &&
     msg.flags() == (NLM_F_REQUEST | flags) &&
     status.table == RT_TABLE_MAIN &&
     status.protocol == RTPROT_BOOT &&
     status.scope == entry.scope &&
     status.type == RTN_UNICAST &&
     msg.HasAttribute(RTA_DST) &&
     IPAddress(msg.family(),
               msg.GetAttribute(RTA_DST)).Equals(entry.dst) &&
     !msg.HasAttribute(RTA_SRC) &&
     msg.HasAttribute(RTA_GATEWAY) &&
     IPAddress(msg.family(),
               msg.GetAttribute(RTA_GATEWAY)).Equals(entry.gateway) &&
     msg.GetAttribute(RTA_OIF).ConvertToCPUUInt32(&oif) &&
     oif == index &&
     msg.GetAttribute(RTA_PRIORITY).ConvertToCPUUInt32(&priority) &&
     priority == entry.metric;
 }

 void RoutingTableTest::SendRouteMsg(RTNLMessage::Mode mode,
                                     uint32 interface_index,
                                     const RoutingTableEntry &entry) {
   RTNLMessage msg(
       RTNLMessage::kTypeRoute,
       mode,
       0,
       0,
       0,
       0,
       entry.dst.family());

   msg.set_route_status(RTNLMessage::RouteStatus(
       entry.dst.prefix(),
       entry.src.prefix(),
       RT_TABLE_MAIN,
       RTPROT_BOOT,
       entry.scope,
       RTN_UNICAST,
       0));

   msg.SetAttribute(RTA_DST, entry.dst.address());
   if (!entry.src.IsDefault()) {
     msg.SetAttribute(RTA_SRC, entry.src.address());
   }
   if (!entry.gateway.IsDefault()) {
     msg.SetAttribute(RTA_GATEWAY, entry.gateway.address());
   }
   msg.SetAttribute(RTA_PRIORITY, ByteString::CreateFromCPUUInt32(entry.metric));
   msg.SetAttribute(RTA_OIF, ByteString::CreateFromCPUUInt32(interface_index));

   ByteString msgdata = msg.Encode();
   EXPECT_NE(0, msgdata.GetLength());

   InputData data(msgdata.GetData(), msgdata.GetLength());
   RTNLHandler::GetInstance()->ParseRTNL(&data);
 }

 void RoutingTableTest::StartRTNLHandler() {
   EXPECT_CALL(sockets_, Socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE))
       .WillOnce(Return(kTestSocket));
   EXPECT_CALL(sockets_, Bind(kTestSocket, _, sizeof(sockaddr_nl)))
       .WillOnce(Return(0));
   RTNLHandler::GetInstance()->Start(&dispatcher_, &sockets_);
 }

 void RoutingTableTest::StopRTNLHandler() {
   EXPECT_CALL(sockets_, Close(_)).WillOnce(Return(0));
   RTNLHandler::GetInstance()->Stop();
 }

 TEST_F(RoutingTableTest, RouteAddDelete) {
   EXPECT_CALL(sockets_, Send(kTestSocket, _, _, 0));
   StartRTNLHandler();
   routing_table_->Start();

   // Expect the tables to be empty by default
   EXPECT_EQ(0, GetRoutingTables()->size());

   IPAddress default_address(IPAddress::kFamilyIPv4);
   default_address.SetAddressToDefault();

   IPAddress gateway_address0(IPAddress::kFamilyIPv4);
   gateway_address0.SetAddressFromString(kTestNetAddress0);

   int metric = 10;

   RoutingTableEntry entry0(default_address,
                            default_address,
                            gateway_address0,
                            metric,
                            RT_SCOPE_UNIVERSE,
                            true);
   // Add a single entry
   SendRouteMsg(RTNLMessage::kModeAdd,
                kTestDeviceIndex0,
                entry0);

   base::hash_map<int, std::vector<RoutingTableEntry> > *tables =
     GetRoutingTables();

   // Should have a single table, which should in turn have a single entry
   EXPECT_EQ(1, tables->size());
   EXPECT_TRUE(ContainsKey(*tables, kTestDeviceIndex0));
   EXPECT_EQ(1, (*tables)[kTestDeviceIndex0].size());

   RoutingTableEntry test_entry = (*tables)[kTestDeviceIndex0][0];
   EXPECT_TRUE(entry0.Equals(test_entry));

   // Add a second entry for a different interface
   SendRouteMsg(RTNLMessage::kModeAdd,
                kTestDeviceIndex1,
                entry0);

   // Should have two tables, which should have a single entry each
   EXPECT_EQ(2, tables->size());
   EXPECT_TRUE(ContainsKey(*tables, kTestDeviceIndex1));
   EXPECT_EQ(1, (*tables)[kTestDeviceIndex0].size());
   EXPECT_EQ(1, (*tables)[kTestDeviceIndex1].size());

   test_entry = (*tables)[kTestDeviceIndex1][0];
   EXPECT_TRUE(entry0.Equals(test_entry));

   IPAddress gateway_address1(IPAddress::kFamilyIPv4);
   gateway_address1.SetAddressFromString(kTestNetAddress1);

   RoutingTableEntry entry1(default_address,
                            default_address,
                            gateway_address1,
                            metric,
                            RT_SCOPE_UNIVERSE,
                            true);

   // Add a second gateway route to the second interface
   SendRouteMsg(RTNLMessage::kModeAdd,
                kTestDeviceIndex1,
                entry1);

   // Should have two tables, one of which has a single entry, the other has two
   EXPECT_EQ(2, tables->size());
   EXPECT_EQ(1, (*tables)[kTestDeviceIndex0].size());
   EXPECT_EQ(2, (*tables)[kTestDeviceIndex1].size());

   test_entry = (*tables)[kTestDeviceIndex1][1];
   EXPECT_TRUE(entry1.Equals(test_entry));

   // Remove the first gateway route from the second interface
   SendRouteMsg(RTNLMessage::kModeDelete,
                kTestDeviceIndex1,
                entry0);

   // We should be back to having one route per table
   EXPECT_EQ(2, tables->size());
   EXPECT_EQ(1, (*tables)[kTestDeviceIndex0].size());
   EXPECT_EQ(1, (*tables)[kTestDeviceIndex1].size());

   test_entry = (*tables)[kTestDeviceIndex1][0];
   EXPECT_TRUE(entry1.Equals(test_entry));

   // Send a duplicate of the second gatway route message, changing the metric
   RoutingTableEntry entry2(entry1);
   entry2.metric++;
   SendRouteMsg(RTNLMessage::kModeAdd,
                kTestDeviceIndex1,
                entry2);

   // Routing table size shouldn't change, but the new metric should match
   EXPECT_EQ(1, (*tables)[kTestDeviceIndex1].size());
   test_entry = (*tables)[kTestDeviceIndex1][0];
   EXPECT_TRUE(entry2.Equals(test_entry));

   // Find a matching entry
   EXPECT_TRUE(routing_table_->GetDefaultRoute(kTestDeviceIndex1,
                                               IPAddress::kFamilyIPv4,
                                               &test_entry));
   EXPECT_TRUE(entry2.Equals(test_entry));

   // Test that a search for a non-matching family fails
   EXPECT_FALSE(routing_table_->GetDefaultRoute(kTestDeviceIndex1,
                                                IPAddress::kFamilyIPv6,
                                                &test_entry));

   // Remove last entry from an existing interface and test that we now fail
   SendRouteMsg(RTNLMessage::kModeDelete,
                kTestDeviceIndex1,
                entry2);

   EXPECT_FALSE(routing_table_->GetDefaultRoute(kTestDeviceIndex1,
                                                IPAddress::kFamilyIPv4,
                                                &test_entry));

   // Add a route from an IPConfig entry
   MockControl control;
   IPConfigRefPtr ipconfig(new IPConfig(&control, kTestDeviceName0));
   IPConfig::Properties properties;
   properties.address_family = IPAddress::kFamilyIPv4;
   properties.gateway = kTestNetAddress0;
   properties.address = kTestNetAddress1;
   ipconfig->UpdateProperties(properties, true);

   EXPECT_CALL(sockets_,
               Send(kTestSocket,
                    IsRoutingPacket(RTNLMessage::kModeAdd,
                                    kTestDeviceIndex1,
                                    entry0,
                                    NLM_F_CREATE | NLM_F_EXCL),
                    _,
                    0));
   EXPECT_TRUE(routing_table_->SetDefaultRoute(kTestDeviceIndex1,
                                               ipconfig,
                                               metric));

   // The table entry should look much like entry0, except with from_rtnl = false
   RoutingTableEntry entry3(entry0);
   entry3.from_rtnl = false;
   EXPECT_TRUE(routing_table_->GetDefaultRoute(kTestDeviceIndex1,
                                               IPAddress::kFamilyIPv4,
                                               &test_entry));
   EXPECT_TRUE(entry3.Equals(test_entry));

   // Setting the same route on the interface with a different metric should
   // push the route with different flags to indicate we are replacing it.
   RoutingTableEntry entry4(entry3);
   entry4.metric += 10;
   EXPECT_CALL(sockets_,
               Send(kTestSocket,
                    IsRoutingPacket(RTNLMessage::kModeAdd,
                                    kTestDeviceIndex1,
                                    entry4,
                                    NLM_F_CREATE | NLM_F_REPLACE),
                    _,
                    0));
   EXPECT_TRUE(routing_table_->SetDefaultRoute(kTestDeviceIndex1,
                                               ipconfig,
                                               entry4.metric));

   // Test that removing the table causes the route to disappear
   routing_table_->ResetTable(kTestDeviceIndex1);
   EXPECT_FALSE(ContainsKey(*tables, kTestDeviceIndex1));
   EXPECT_FALSE(routing_table_->GetDefaultRoute(kTestDeviceIndex1,
                                                IPAddress::kFamilyIPv4,
                                                &test_entry));
   EXPECT_EQ(1, GetRoutingTables()->size());

   // When we set the metric on an existing route, a new add message appears
   RoutingTableEntry entry5(entry4);
   entry5.metric += 10;
   EXPECT_CALL(sockets_,
               Send(kTestSocket,
                    IsRoutingPacket(RTNLMessage::kModeAdd,
                                    kTestDeviceIndex0,
                                    entry5,
                                    NLM_F_CREATE | NLM_F_REPLACE),
                    _,
                    0));
   routing_table_->SetDefaultMetric(kTestDeviceIndex0, entry5.metric);

   // Ask to flush table0.  We should see a delete message sent
   EXPECT_CALL(sockets_,
               Send(kTestSocket,
                    IsRoutingPacket(RTNLMessage::kModeDelete,
                                    kTestDeviceIndex0,
                                    entry0,
                                    0),
                    _,
                    0));
   routing_table_->FlushRoutes(kTestDeviceIndex0);

   // Test that the routing table size returns to zero
   EXPECT_EQ(1, GetRoutingTables()->size());
   routing_table_->ResetTable(kTestDeviceIndex0);
   EXPECT_EQ(0, GetRoutingTables()->size());

   routing_table_->Stop();
   StopRTNLHandler();
 }

 }  // namespace shill
	// Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	#include <sys/socket.h>
	#include <linux/rtnetlink.h>

	#include <base/logging.h>
	#include <base/stl_util-inl.h>
	#include <gtest/gtest.h>
	#include <gmock/gmock.h>

	#include "shill/byte_string.h"
	#include "shill/mock_control.h"
	#include "shill/mock_sockets.h"
	#include "shill/routing_table.h"
	#include "shill/routing_table_entry.h"
	#include "shill/rtnl_handler.h"
	#include "shill/rtnl_message.h"

	using testing::_;
	using testing::Return;
	using testing::Test;

	namespace shill {

	class TestEventDispatcher : public EventDispatcher {
	public:
	virtual IOHandler *CreateInputHandler(
	int /fd/,
	Callback1<InputData>::Type /callback/) {
	return NULL;
	}
	};

	class RoutingTableTest : public Test {
	public:
	RoutingTableTest() : routing_table_(RoutingTable::GetInstance()) {}

	base::hash_map<int, std::vector<RoutingTableEntry> > *GetRoutingTables() {
	return &routing_table_->tables_;
	}

	void SendRouteMsg(RTNLMessage::Mode mode,
	uint32 interface_index,
	const RoutingTableEntry &entry);

	virtual void TearDown() {
	RTNLHandler::GetInstance()->Stop();
	}

	protected:
	static const int kTestSocket;
	static const uint32 kTestDeviceIndex0;
	static const uint32 kTestDeviceIndex1;
	static const char kTestDeviceName0[];
	static const char kTestNetAddress0[];
	static const char kTestNetAddress1[];

	void StartRTNLHandler();
	void StopRTNLHandler();

	MockSockets sockets_;
	RoutingTable *routing_table_;
	TestEventDispatcher dispatcher_;
	};

	const int RoutingTableTest::kTestSocket = 123;
	const uint32 RoutingTableTest::kTestDeviceIndex0 = 12345;
	const uint32 RoutingTableTest::kTestDeviceIndex1 = 67890;
	const char RoutingTableTest::kTestDeviceName0[] = "test-device0";
	const char RoutingTableTest::kTestNetAddress0[] = "192.168.1.1";
	const char RoutingTableTest::kTestNetAddress1[] = "192.168.1.2";


	MATCHER_P4(IsRoutingPacket, mode, index, entry, flags, "") {
	// NB: Matchers don't get passed multiple arguments, so we can
	// get the address of a Send(), its length, but not both.
	// We have to punt and assume the length is correct -- which
	// should already be tested in rtnl_message_unittest.
	struct nlmsghdr hdr;
	memcpy(&hdr, arg, sizeof(hdr));

	RTNLMessage msg;
	if (!msg.Decode(ByteString(reinterpret_cast<const unsigned char *>(arg),
	hdr.nlmsg_len))) {
	return false;
	}

	const RTNLMessage::RouteStatus &status = msg.route_status();

	uint32 oif;
	uint32 priority;

	return
	msg.type() == RTNLMessage::kTypeRoute &&
	msg.family() == entry.gateway.family() &&
	msg.flags() == (NLM_F_REQUEST \| flags) &&
	status.table == RT_TABLE_MAIN &&
	status.protocol == RTPROT_BOOT &&
	status.scope == entry.scope &&
	status.type == RTN_UNICAST &&
	msg.HasAttribute(RTA_DST) &&
	IPAddress(msg.family(),
	msg.GetAttribute(RTA_DST)).Equals(entry.dst) &&
	!msg.HasAttribute(RTA_SRC) &&
	msg.HasAttribute(RTA_GATEWAY) &&
	IPAddress(msg.family(),
	msg.GetAttribute(RTA_GATEWAY)).Equals(entry.gateway) &&
	msg.GetAttribute(RTA_OIF).ConvertToCPUUInt32(&oif) &&
	oif == index &&
	msg.GetAttribute(RTA_PRIORITY).ConvertToCPUUInt32(&priority) &&
	priority == entry.metric;
	}

	void RoutingTableTest::SendRouteMsg(RTNLMessage::Mode mode,
	uint32 interface_index,
	const RoutingTableEntry &entry) {
	RTNLMessage msg(
	RTNLMessage::kTypeRoute,
	mode,
	0,
	0,
	0,
	0,
	entry.dst.family());

	msg.set_route_status(RTNLMessage::RouteStatus(
	entry.dst.prefix(),
	entry.src.prefix(),
	RT_TABLE_MAIN,
	RTPROT_BOOT,
	entry.scope,
	RTN_UNICAST,
	0));

	msg.SetAttribute(RTA_DST, entry.dst.address());
	if (!entry.src.IsDefault()) {
	msg.SetAttribute(RTA_SRC, entry.src.address());
	}
	if (!entry.gateway.IsDefault()) {
	msg.SetAttribute(RTA_GATEWAY, entry.gateway.address());
	}
	msg.SetAttribute(RTA_PRIORITY, ByteString::CreateFromCPUUInt32(entry.metric));
	msg.SetAttribute(RTA_OIF, ByteString::CreateFromCPUUInt32(interface_index));

	ByteString msgdata = msg.Encode();
	EXPECT_NE(0, msgdata.GetLength());

	InputData data(msgdata.GetData(), msgdata.GetLength());
	RTNLHandler::GetInstance()->ParseRTNL(&data);
	}

	void RoutingTableTest::StartRTNLHandler() {
	EXPECT_CALL(sockets_, Socket(PF_NETLINK, SOCK_DGRAM, NETLINK_ROUTE))
	.WillOnce(Return(kTestSocket));
	EXPECT_CALL(sockets_, Bind(kTestSocket, _, sizeof(sockaddr_nl)))
	.WillOnce(Return(0));
	RTNLHandler::GetInstance()->Start(&dispatcher_, &sockets_);
	}

	void RoutingTableTest::StopRTNLHandler() {
	EXPECT_CALL(sockets_, Close(_)).WillOnce(Return(0));
	RTNLHandler::GetInstance()->Stop();
	}

	TEST_F(RoutingTableTest, RouteAddDelete) {
	EXPECT_CALL(sockets_, Send(kTestSocket, _, _, 0));
	StartRTNLHandler();
	routing_table_->Start();

	// Expect the tables to be empty by default
	EXPECT_EQ(0, GetRoutingTables()->size());

	IPAddress default_address(IPAddress::kFamilyIPv4);
	default_address.SetAddressToDefault();

	IPAddress gateway_address0(IPAddress::kFamilyIPv4);
	gateway_address0.SetAddressFromString(kTestNetAddress0);

	int metric = 10;

	RoutingTableEntry entry0(default_address,
	default_address,
	gateway_address0,
	metric,
	RT_SCOPE_UNIVERSE,
	true);
	// Add a single entry
	SendRouteMsg(RTNLMessage::kModeAdd,
	kTestDeviceIndex0,
	entry0);

	base::hash_map<int, std::vector<RoutingTableEntry> > *tables =
	GetRoutingTables();

	// Should have a single table, which should in turn have a single entry
	EXPECT_EQ(1, tables->size());
	EXPECT_TRUE(ContainsKey(*tables, kTestDeviceIndex0));
	EXPECT_EQ(1, (*tables)[kTestDeviceIndex0].size());

	RoutingTableEntry test_entry = (*tables)[kTestDeviceIndex0][0];
	EXPECT_TRUE(entry0.Equals(test_entry));

	// Add a second entry for a different interface
	SendRouteMsg(RTNLMessage::kModeAdd,
	kTestDeviceIndex1,
	entry0);

	// Should have two tables, which should have a single entry each
	EXPECT_EQ(2, tables->size());
	EXPECT_TRUE(ContainsKey(*tables, kTestDeviceIndex1));
	EXPECT_EQ(1, (*tables)[kTestDeviceIndex0].size());
	EXPECT_EQ(1, (*tables)[kTestDeviceIndex1].size());

	test_entry = (*tables)[kTestDeviceIndex1][0];
	EXPECT_TRUE(entry0.Equals(test_entry));

	IPAddress gateway_address1(IPAddress::kFamilyIPv4);
	gateway_address1.SetAddressFromString(kTestNetAddress1);

	RoutingTableEntry entry1(default_address,
	default_address,
	gateway_address1,
	metric,
	RT_SCOPE_UNIVERSE,
	true);

	// Add a second gateway route to the second interface
	SendRouteMsg(RTNLMessage::kModeAdd,
	kTestDeviceIndex1,
	entry1);

	// Should have two tables, one of which has a single entry, the other has two
	EXPECT_EQ(2, tables->size());
	EXPECT_EQ(1, (*tables)[kTestDeviceIndex0].size());
	EXPECT_EQ(2, (*tables)[kTestDeviceIndex1].size());

	test_entry = (*tables)[kTestDeviceIndex1][1];
	EXPECT_TRUE(entry1.Equals(test_entry));

	// Remove the first gateway route from the second interface
	SendRouteMsg(RTNLMessage::kModeDelete,
	kTestDeviceIndex1,
	entry0);

	// We should be back to having one route per table
	EXPECT_EQ(2, tables->size());
	EXPECT_EQ(1, (*tables)[kTestDeviceIndex0].size());
	EXPECT_EQ(1, (*tables)[kTestDeviceIndex1].size());

	test_entry = (*tables)[kTestDeviceIndex1][0];
	EXPECT_TRUE(entry1.Equals(test_entry));

	// Send a duplicate of the second gatway route message, changing the metric
	RoutingTableEntry entry2(entry1);
	entry2.metric++;
	SendRouteMsg(RTNLMessage::kModeAdd,
	kTestDeviceIndex1,
	entry2);

	// Routing table size shouldn't change, but the new metric should match
	EXPECT_EQ(1, (*tables)[kTestDeviceIndex1].size());
	test_entry = (*tables)[kTestDeviceIndex1][0];
	EXPECT_TRUE(entry2.Equals(test_entry));

	// Find a matching entry
	EXPECT_TRUE(routing_table_->GetDefaultRoute(kTestDeviceIndex1,
	IPAddress::kFamilyIPv4,
	&test_entry));
	EXPECT_TRUE(entry2.Equals(test_entry));

	// Test that a search for a non-matching family fails
	EXPECT_FALSE(routing_table_->GetDefaultRoute(kTestDeviceIndex1,
	IPAddress::kFamilyIPv6,
	&test_entry));

	// Remove last entry from an existing interface and test that we now fail
	SendRouteMsg(RTNLMessage::kModeDelete,
	kTestDeviceIndex1,
	entry2);

	EXPECT_FALSE(routing_table_->GetDefaultRoute(kTestDeviceIndex1,
	IPAddress::kFamilyIPv4,
	&test_entry));

	// Add a route from an IPConfig entry
	MockControl control;
	IPConfigRefPtr ipconfig(new IPConfig(&control, kTestDeviceName0));
	IPConfig::Properties properties;
	properties.address_family = IPAddress::kFamilyIPv4;
	properties.gateway = kTestNetAddress0;
	properties.address = kTestNetAddress1;
	ipconfig->UpdateProperties(properties, true);

	EXPECT_CALL(sockets_,
	Send(kTestSocket,
	IsRoutingPacket(RTNLMessage::kModeAdd,
	kTestDeviceIndex1,
	entry0,
	NLM_F_CREATE \| NLM_F_EXCL),
	_,
	0));
	EXPECT_TRUE(routing_table_->SetDefaultRoute(kTestDeviceIndex1,
	ipconfig,
	metric));

	// The table entry should look much like entry0, except with from_rtnl = false
	RoutingTableEntry entry3(entry0);
	entry3.from_rtnl = false;
	EXPECT_TRUE(routing_table_->GetDefaultRoute(kTestDeviceIndex1,
	IPAddress::kFamilyIPv4,
	&test_entry));
	EXPECT_TRUE(entry3.Equals(test_entry));

	// Setting the same route on the interface with a different metric should
	// push the route with different flags to indicate we are replacing it.
	RoutingTableEntry entry4(entry3);
	entry4.metric += 10;
	EXPECT_CALL(sockets_,
	Send(kTestSocket,
	IsRoutingPacket(RTNLMessage::kModeAdd,
	kTestDeviceIndex1,
	entry4,
	NLM_F_CREATE \| NLM_F_REPLACE),
	_,
	0));
	EXPECT_TRUE(routing_table_->SetDefaultRoute(kTestDeviceIndex1,
	ipconfig,
	entry4.metric));

	// Test that removing the table causes the route to disappear
	routing_table_->ResetTable(kTestDeviceIndex1);
	EXPECT_FALSE(ContainsKey(*tables, kTestDeviceIndex1));
	EXPECT_FALSE(routing_table_->GetDefaultRoute(kTestDeviceIndex1,
	IPAddress::kFamilyIPv4,
	&test_entry));
	EXPECT_EQ(1, GetRoutingTables()->size());

	// When we set the metric on an existing route, a new add message appears
	RoutingTableEntry entry5(entry4);
	entry5.metric += 10;
	EXPECT_CALL(sockets_,
	Send(kTestSocket,
	IsRoutingPacket(RTNLMessage::kModeAdd,
	kTestDeviceIndex0,
	entry5,
	NLM_F_CREATE \| NLM_F_REPLACE),
	_,
	0));
	routing_table_->SetDefaultMetric(kTestDeviceIndex0, entry5.metric);

	// Ask to flush table0. We should see a delete message sent
	EXPECT_CALL(sockets_,
	Send(kTestSocket,
	IsRoutingPacket(RTNLMessage::kModeDelete,
	kTestDeviceIndex0,
	entry0,
	0),
	_,
	0));
	routing_table_->FlushRoutes(kTestDeviceIndex0);

	// Test that the routing table size returns to zero
	EXPECT_EQ(1, GetRoutingTables()->size());
	routing_table_->ResetTable(kTestDeviceIndex0);
	EXPECT_EQ(0, GetRoutingTables()->size());

	routing_table_->Stop();
	StopRTNLHandler();
	}

	} // namespace shill