Merge "Clean up and align the ByteBuffer order in test." (0d749e71) · Commits · e / os / android_packages_modules_NetworkStack

src/com/android/networkstack/netlink/TcpSocketTracker.java

+4 −4

Original line number	Diff line number	Diff line
		@@ -173,7 +173,7 @@ public class TcpSocketTracker {
		// \| Netlink Header \| Family Header \| Attributes \| rtattr \|
		// \| struct nlmsghdr \| struct rtmsg \| struct rtattr\| data \|
		// +------------------+---------------+--------------+--------+
		final ByteBuffer bytes = mDependencies.recvMesssage(fd);
		final ByteBuffer bytes = mDependencies.recvMessage(fd);
		try {
		while (enoughBytesRemainForValidNlMsg(bytes)) {
		final StructNlMsgHdr nlmsghdr = StructNlMsgHdr.parse(bytes);
		@@ -212,9 +212,9 @@ public class TcpSocketTracker {
		}
		}
		} catch (IllegalArgumentException \| BufferUnderflowException e) {
		Log.wtf(TAG, "Unexpected socket info parsing, " + e + ", family " + family
		Log.wtf(TAG, "Unexpected socket info parsing, family " + family
		+ " buffer:" + bytes + " "
		+ Base64.getEncoder().encodeToString(bytes.array()));
		+ Base64.getEncoder().encodeToString(bytes.array()), e);
		}
		}
		// Calculate mLatestReceiveCount, mSentSinceLastRecv and mLatestPacketFailPercentage.
		@@ -547,7 +547,7 @@ public class TcpSocketTracker {
		/**
		* Receive the request message from kernel via given fd.
		*/
		public ByteBuffer recvMesssage(@NonNull final FileDescriptor fd)
		public ByteBuffer recvMessage(@NonNull final FileDescriptor fd)
		throws ErrnoException, InterruptedIOException {
		return NetlinkSocket.recvMessage(fd, DEFAULT_RECV_BUFSIZE, IO_TIMEOUT);
		}

tests/unit/src/com/android/networkstack/netlink/TcpSocketTrackerTest.java

+101 −47

Original line number	Diff line number	Diff line
		@@ -46,6 +46,7 @@ import org.mockito.MockitoAnnotations;

		import java.io.FileDescriptor;
		import java.nio.ByteBuffer;
		import java.nio.ByteOrder;
		import java.util.HashMap;

		// TODO: Add more tests for missing coverage.
		@@ -55,9 +56,9 @@ public class TcpSocketTrackerTest {
		private static final int TEST_BUFFER_SIZE = 1024;
		private static final String DIAG_MSG_HEX =
		// struct nlmsghdr.
		"00000058" + // length = 88
		"0014" + // type = SOCK_DIAG_BY_FAMILY
		"0103" + // flags = NLM_F_REQUEST \| NLM_F_DUMP
		"58000000" + // length = 88
		"1400" + // type = SOCK_DIAG_BY_FAMILY
		"0301" + // flags = NLM_F_REQUEST \| NLM_F_DUMP
		"00000000" + // seqno
		"00000000" + // pid (0 == kernel)
		// struct inet_diag_req_v2
		@@ -66,12 +67,12 @@ public class TcpSocketTrackerTest {
		"00" + // timer
		"00" + // retrans
		// inet_diag_sockid
		"A5DE" + // idiag_sport = 42462
		"B971" + // idiag_dport = 47473
		"DEA5" + // idiag_sport = 42462
		"71B9" + // idiag_dport = 47473
		"0a006402000000000000000000000000" + // idiag_src = 10.0.100.2
		"08080808000000000000000000000000" + // idiag_dst = 8.8.8.8
		"00000000" + // idiag_if
		"000027760000ED34" + // idiag_cookie = 43387759684916
		"34ED000076270000" + // idiag_cookie = 43387759684916
		"00000000" + // idiag_expires
		"00000000" + // idiag_rqueue
		"00000000" + // idiag_wqueue
		@@ -82,9 +83,9 @@ public class TcpSocketTrackerTest {
		// Hexadecimal representation of a SOCK_DIAG response with tcp info.
		private static final String SOCK_DIAG_TCP_INET_HEX =
		// struct nlmsghdr.
		"00000114" + // length = 276
		"0014" + // type = SOCK_DIAG_BY_FAMILY
		"0103" + // flags = NLM_F_REQUEST \| NLM_F_DUMP
		"14010000" + // length = 276
		"1400" + // type = SOCK_DIAG_BY_FAMILY
		"0301" + // flags = NLM_F_REQUEST \| NLM_F_DUMP
		"00000000" + // seqno
		"00000000" + // pid (0 == kernel)
		// struct inet_diag_req_v2
		@@ -93,26 +94,26 @@ public class TcpSocketTrackerTest {
		"00" + // timer
		"00" + // retrans
		// inet_diag_sockid
		"A5DE" + // idiag_sport = 42462
		"B971" + // idiag_dport = 47473
		"DEA5" + // idiag_sport = 42462
		"71B9" + // idiag_dport = 47473
		"0a006402000000000000000000000000" + // idiag_src = 10.0.100.2
		"08080808000000000000000000000000" + // idiag_dst = 8.8.8.8
		"00000000" + // idiag_if
		"000027760000ED34" + // idiag_cookie = 43387759684916
		"34ED000076270000" + // idiag_cookie = 43387759684916
		"00000000" + // idiag_expires
		"00000000" + // idiag_rqueue
		"00000000" + // idiag_wqueue
		"00000000" + // idiag_uid
		"00000000" + // idiag_inode
		// rtattr
		"0005" + // len = 5
		"0008" + // type = 8
		"0500" + // len = 5
		"0800" + // type = 8
		"00000000" + // data
		"0008" + // len = 8
		"000F" + // type = 15(INET_DIAG_MARK)
		"000C1A85" + // data, socket mark=793221
		"00AC" + // len = 172
		"0002" + // type = 2(INET_DIAG_INFO)
		"0800" + // len = 8
		"0F00" + // type = 15(INET_DIAG_MARK)
		"851A0C00" + // data, socket mark=793221
		"AC00" + // len = 172
		"0200" + // type = 2(INET_DIAG_INFO)
		// tcp_info
		"01" + // state = TCP_ESTABLISHED
		"00" + // ca_state = TCP_CA_OPEN
		@@ -122,38 +123,38 @@ public class TcpSocketTrackerTest {
		"07" + // option = TCPI_OPT_WSCALE\|TCPI_OPT_SACK\|TCPI_OPT_TIMESTAMPS
		"88" + // wscale = 8
		"00" + // delivery_rate_app_limited = 0
		"001B914A" + // rto = 1806666
		"4A911B00" + // rto = 1806666
		"00000000" + // ato = 0
		"0000052E" + // sndMss = 1326
		"00000218" + // rcvMss = 536
		"2E050000" + // sndMss = 1326
		"18020000" + // rcvMss = 536
		"00000000" + // unsacked = 0
		"00000000" + // acked = 0
		"00000000" + // lost = 0
		"00000000" + // retrans = 0
		"00000000" + // fackets = 0
		"000000BB" + // lastDataSent = 187
		"BB000000" + // lastDataSent = 187
		"00000000" + // lastAckSent = 0
		"000000BB" + // lastDataRecv = 187
		"000000BB" + // lastDataAckRecv = 187
		"000005DC" + // pmtu = 1500
		"00015630" + // rcvSsthresh = 87600
		"00092C3E" + // rttt = 601150
		"0004961F" + // rttvar = 300575
		"00000578" + // sndSsthresh = 1400
		"0000000A" + // sndCwnd = 10
		"000005A8" + // advmss = 1448
		"00000003" + // reordering = 3
		"BB000000" + // lastDataRecv = 187
		"BB000000" + // lastDataAckRecv = 187
		"DC050000" + // pmtu = 1500
		"30560100" + // rcvSsthresh = 87600
		"3E2C0900" + // rttt = 601150
		"1F960400" + // rttvar = 300575
		"78050000" + // sndSsthresh = 1400
		"0A000000" + // sndCwnd = 10
		"A8050000" + // advmss = 1448
		"03000000" + // reordering = 3
		"00000000" + // rcvrtt = 0
		"00015630" + // rcvspace = 87600
		"30560100" + // rcvspace = 87600
		"00000000" + // totalRetrans = 0
		"000000000000AC53" + // pacingRate = 44115
		"53AC000000000000" + // pacingRate = 44115
		"FFFFFFFFFFFFFFFF" + // maxPacingRate = 18446744073709551615
		"0000000000000001" + // bytesAcked = 1
		"0100000000000000" + // bytesAcked = 1
		"0000000000000000" + // bytesReceived = 0
		"0000000A" + // SegsOut = 10
		"0A000000" + // SegsOut = 10
		"00000000" + // SegsIn = 0
		"00000000" + // NotSentBytes = 0
		"00092C3E" + // minRtt = 601150
		"3E2C0900" + // minRtt = 601150
		"00000000" + // DataSegsIn = 0
		"00000000" + // DataSegsOut = 0
		"0000000000000000"; // deliverRate = 0
		@@ -162,9 +163,9 @@ public class TcpSocketTrackerTest {

		private static final String TEST_RESPONSE_HEX = SOCK_DIAG_TCP_INET_HEX
		// struct nlmsghdr
		+ "00000014" // length = 20
		+ "0003" // type = NLMSG_DONE
		+ "0103" // flags = NLM_F_REQUEST \| NLM_F_DUMP
		+ "14000000" // length = 20
		+ "0300" // type = NLMSG_DONE
		+ "0301" // flags = NLM_F_REQUEST \| NLM_F_DUMP
		+ "00000000" // seqno
		+ "00000000" // pid (0 == kernel)
		// struct inet_diag_req_v2
		@@ -188,9 +189,15 @@ public class TcpSocketTrackerTest {
		anyInt())).thenReturn(DEFAULT_TCP_PACKETS_FAIL_PERCENTAGE);
		}

		private ByteBuffer getByteBuffer(final byte[] bytes) {
		final ByteBuffer buffer = ByteBuffer.wrap(bytes);
		buffer.order(ByteOrder.LITTLE_ENDIAN);
		return buffer;
		}

		@Test
		public void testParseSockInfo() {
		final ByteBuffer buffer = ByteBuffer.wrap(SOCK_DIAG_TCP_INET_BYTES);
		final ByteBuffer buffer = getByteBuffer(SOCK_DIAG_TCP_INET_BYTES);
		final TcpSocketTracker tst = new TcpSocketTracker(mDependencies);
		buffer.position(SOCKDIAG_MSG_HEADER_SIZE);
		final TcpSocketTracker.SocketInfo parsed =
		@@ -269,20 +276,21 @@ public class TcpSocketTrackerTest {
		when(mDependencies.isTcpInfoParsingSupported()).thenReturn(true);
		// No enough bytes remain for a valid NlMsg.
		final ByteBuffer invalidBuffer = ByteBuffer.allocate(1);
		when(mDependencies.recvMesssage(any())).thenReturn(invalidBuffer);
		invalidBuffer.order(ByteOrder.LITTLE_ENDIAN);
		when(mDependencies.recvMessage(any())).thenReturn(invalidBuffer);
		assertTrue(tst.pollSocketsInfo());
		assertEquals(-1, tst.getLatestPacketFailPercentage());
		assertEquals(0, tst.getSentSinceLastRecv());

		// Header only.
		final ByteBuffer headerBuffer = ByteBuffer.wrap(SOCK_DIAG_MSG_BYTES);
		when(mDependencies.recvMesssage(any())).thenReturn(headerBuffer);
		final ByteBuffer headerBuffer = getByteBuffer(SOCK_DIAG_MSG_BYTES);
		when(mDependencies.recvMessage(any())).thenReturn(headerBuffer);
		assertTrue(tst.pollSocketsInfo());
		assertEquals(-1, tst.getLatestPacketFailPercentage());
		assertEquals(0, tst.getSentSinceLastRecv());

		final ByteBuffer tcpBuffer = ByteBuffer.wrap(TEST_RESPONSE_BYTES);
		when(mDependencies.recvMesssage(any())).thenReturn(tcpBuffer);
		final ByteBuffer tcpBuffer = getByteBuffer(TEST_RESPONSE_BYTES);
		when(mDependencies.recvMessage(any())).thenReturn(tcpBuffer);
		assertTrue(tst.pollSocketsInfo());

		assertEquals(10, tst.getSentSinceLastRecv());
		@@ -297,4 +305,50 @@ public class TcpSocketTrackerTest {
		tst.mConfigListener.onPropertiesChanged(null /* properties */);
		assertTrue(tst.isDataStallSuspected());
		}

		private static final String BAD_DIAG_MSG_HEX =
		// struct nlmsghdr.
		"00000058" + // length = 1476395008
		"1400" + // type = SOCK_DIAG_BY_FAMILY
		"0301" + // flags = NLM_F_REQUEST \| NLM_F_DUMP
		"00000000" + // seqno
		"00000000" + // pid (0 == kernel)
		// struct inet_diag_req_v2
		"02" + // family = AF_INET
		"06" + // state
		"00" + // timer
		"00" + // retrans
		// inet_diag_sockid
		"DEA5" + // idiag_sport = 42462
		"71B9" + // idiag_dport = 47473
		"0a006402000000000000000000000000" + // idiag_src = 10.0.100.2
		"08080808000000000000000000000000" + // idiag_dst = 8.8.8.8
		"00000000" + // idiag_if
		"34ED000076270000" + // idiag_cookie = 43387759684916
		"00000000" + // idiag_expires
		"00000000" + // idiag_rqueue
		"00000000" + // idiag_wqueue
		"00000000" + // idiag_uid
		"00000000"; // idiag_inode
		private static final byte[] BAD_SOCK_DIAG_MSG_BYTES =
		HexEncoding.decode(BAD_DIAG_MSG_HEX.toCharArray(), false);

		@Test
		public void testPollSocketsInfo_BadFormat() throws Exception {
		final TcpSocketTracker tst = new TcpSocketTracker(mDependencies);
		ByteBuffer tcpBuffer = getByteBuffer(TEST_RESPONSE_BYTES);

		when(mDependencies.recvMessage(any())).thenReturn(tcpBuffer);
		assertTrue(tst.pollSocketsInfo());
		assertEquals(10, tst.getSentSinceLastRecv());
		assertEquals(50, tst.getLatestPacketFailPercentage());

		tcpBuffer = getByteBuffer(BAD_SOCK_DIAG_MSG_BYTES);
		when(mDependencies.recvMessage(any())).thenReturn(tcpBuffer);
		assertTrue(tst.pollSocketsInfo());
		// Expect no additional packets, so still 10.
		assertEquals(10, tst.getSentSinceLastRecv());
		// Expect to reset to 0.
		assertEquals(0, tst.getLatestPacketFailPercentage());
		}
		}