Move buildXXXPacket methods into TetheringTester
Move all EthernetTetheringTest buildXXXPacket util into TetheringTester
and make them static public.
Bug: 259888307
Test: atest EthernetTetheringTest
Change-Id: Ice5252c1adfdb98dfaf815f48ac4603711317f65
diff --git a/Tethering/tests/integration/base/android/net/EthernetTetheringTestBase.java b/Tethering/tests/integration/base/android/net/EthernetTetheringTestBase.java
index 007bf23..a9add20 100644
--- a/Tethering/tests/integration/base/android/net/EthernetTetheringTestBase.java
+++ b/Tethering/tests/integration/base/android/net/EthernetTetheringTestBase.java
@@ -25,17 +25,14 @@
import static android.net.TetheringManager.CONNECTIVITY_SCOPE_GLOBAL;
import static android.net.TetheringManager.CONNECTIVITY_SCOPE_LOCAL;
import static android.net.TetheringManager.TETHERING_ETHERNET;
+import static android.net.TetheringTester.buildTcpPacket;
+import static android.net.TetheringTester.buildUdpPacket;
+import static android.net.TetheringTester.isAddressIpv4;
import static android.net.TetheringTester.isExpectedIcmpPacket;
import static android.net.TetheringTester.isExpectedTcpPacket;
import static android.net.TetheringTester.isExpectedUdpPacket;
-import static android.system.OsConstants.IPPROTO_IP;
-import static android.system.OsConstants.IPPROTO_IPV6;
-import static android.system.OsConstants.IPPROTO_TCP;
-import static android.system.OsConstants.IPPROTO_UDP;
import static com.android.net.module.util.HexDump.dumpHexString;
-import static com.android.net.module.util.NetworkStackConstants.ETHER_TYPE_IPV4;
-import static com.android.net.module.util.NetworkStackConstants.ETHER_TYPE_IPV6;
import static com.android.net.module.util.NetworkStackConstants.ICMPV6_ROUTER_ADVERTISEMENT;
import static com.android.net.module.util.NetworkStackConstants.TCPHDR_ACK;
import static com.android.net.module.util.NetworkStackConstants.TCPHDR_SYN;
@@ -67,11 +64,9 @@
import android.util.Log;
import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
import androidx.test.platform.app.InstrumentationRegistry;
import com.android.modules.utils.build.SdkLevel;
-import com.android.net.module.util.PacketBuilder;
import com.android.net.module.util.Struct;
import com.android.net.module.util.structs.Ipv6Header;
import com.android.testutils.HandlerUtils;
@@ -128,25 +123,11 @@
(Inet6Address) parseNumericAddress("64:ff9b::808:808");
protected static final IpPrefix TEST_NAT64PREFIX = new IpPrefix("64:ff9b::/96");
- // IPv4 header definition.
- protected static final short ID = 27149;
- protected static final short FLAGS_AND_FRAGMENT_OFFSET = (short) 0x4000; // flags=DF, offset=0
- protected static final byte TIME_TO_LIVE = (byte) 0x40;
- protected static final byte TYPE_OF_SERVICE = 0;
-
- // IPv6 header definition.
- private static final short HOP_LIMIT = 0x40;
- // version=6, traffic class=0x0, flowlabel=0x0;
- private static final int VERSION_TRAFFICCLASS_FLOWLABEL = 0x60000000;
-
- // UDP and TCP header definition.
// LOCAL_PORT is used by public port and private port. Assume port 9876 has not been used yet
// before the testing that public port and private port are the same in the testing. Note that
// NAT port forwarding could be different between private port and public port.
protected static final short LOCAL_PORT = 9876;
protected static final short REMOTE_PORT = 433;
- private static final short WINDOW = (short) 0x2000;
- private static final short URGENT_POINTER = 0;
// Payload definition.
protected static final ByteBuffer EMPTY_PAYLOAD = ByteBuffer.wrap(new byte[0]);
@@ -654,72 +635,6 @@
return runAsShell(MANAGE_TEST_NETWORKS, () -> initTestNetwork(mContext, lp, TIMEOUT_MS));
}
- private short getEthType(@NonNull final InetAddress srcIp, @NonNull final InetAddress dstIp) {
- return isAddressIpv4(srcIp, dstIp) ? (short) ETHER_TYPE_IPV4 : (short) ETHER_TYPE_IPV6;
- }
-
- private int getIpProto(@NonNull final InetAddress srcIp, @NonNull final InetAddress dstIp) {
- return isAddressIpv4(srcIp, dstIp) ? IPPROTO_IP : IPPROTO_IPV6;
- }
-
- @NonNull
- protected ByteBuffer buildUdpPacket(
- @Nullable final MacAddress srcMac, @Nullable final MacAddress dstMac,
- @NonNull final InetAddress srcIp, @NonNull final InetAddress dstIp,
- short srcPort, short dstPort, @Nullable final ByteBuffer payload)
- throws Exception {
- final int ipProto = getIpProto(srcIp, dstIp);
- final boolean hasEther = (srcMac != null && dstMac != null);
- final int payloadLen = (payload == null) ? 0 : payload.limit();
- final ByteBuffer buffer = PacketBuilder.allocate(hasEther, ipProto, IPPROTO_UDP,
- payloadLen);
- final PacketBuilder packetBuilder = new PacketBuilder(buffer);
-
- // [1] Ethernet header
- if (hasEther) {
- packetBuilder.writeL2Header(srcMac, dstMac, getEthType(srcIp, dstIp));
- }
-
- // [2] IP header
- if (ipProto == IPPROTO_IP) {
- packetBuilder.writeIpv4Header(TYPE_OF_SERVICE, ID, FLAGS_AND_FRAGMENT_OFFSET,
- TIME_TO_LIVE, (byte) IPPROTO_UDP, (Inet4Address) srcIp, (Inet4Address) dstIp);
- } else {
- packetBuilder.writeIpv6Header(VERSION_TRAFFICCLASS_FLOWLABEL, (byte) IPPROTO_UDP,
- HOP_LIMIT, (Inet6Address) srcIp, (Inet6Address) dstIp);
- }
-
- // [3] UDP header
- packetBuilder.writeUdpHeader(srcPort, dstPort);
-
- // [4] Payload
- if (payload != null) {
- buffer.put(payload);
- // in case data might be reused by caller, restore the position and
- // limit of bytebuffer.
- payload.clear();
- }
-
- return packetBuilder.finalizePacket();
- }
-
- @NonNull
- protected ByteBuffer buildUdpPacket(@NonNull final InetAddress srcIp,
- @NonNull final InetAddress dstIp, short srcPort, short dstPort,
- @Nullable final ByteBuffer payload) throws Exception {
- return buildUdpPacket(null /* srcMac */, null /* dstMac */, srcIp, dstIp, srcPort,
- dstPort, payload);
- }
-
- private boolean isAddressIpv4(@NonNull final InetAddress srcIp,
- @NonNull final InetAddress dstIp) {
- if (srcIp instanceof Inet4Address && dstIp instanceof Inet4Address) return true;
- if (srcIp instanceof Inet6Address && dstIp instanceof Inet6Address) return false;
-
- fail("Unsupported conditions: srcIp " + srcIp + ", dstIp " + dstIp);
- return false; // unreachable
- }
-
protected void sendDownloadPacketUdp(@NonNull final InetAddress srcIp,
@NonNull final InetAddress dstIp, @NonNull final TetheringTester tester,
boolean is6To4) throws Exception {
@@ -761,45 +676,6 @@
});
}
-
- @NonNull
- private ByteBuffer buildTcpPacket(
- @Nullable final MacAddress srcMac, @Nullable final MacAddress dstMac,
- @NonNull final InetAddress srcIp, @NonNull final InetAddress dstIp,
- short srcPort, short dstPort, final short seq, final short ack,
- final byte tcpFlags, @NonNull final ByteBuffer payload) throws Exception {
- final int ipProto = getIpProto(srcIp, dstIp);
- final boolean hasEther = (srcMac != null && dstMac != null);
- final ByteBuffer buffer = PacketBuilder.allocate(hasEther, ipProto, IPPROTO_TCP,
- payload.limit());
- final PacketBuilder packetBuilder = new PacketBuilder(buffer);
-
- // [1] Ethernet header
- if (hasEther) {
- packetBuilder.writeL2Header(srcMac, dstMac, getEthType(srcIp, dstIp));
- }
-
- // [2] IP header
- if (ipProto == IPPROTO_IP) {
- packetBuilder.writeIpv4Header(TYPE_OF_SERVICE, ID, FLAGS_AND_FRAGMENT_OFFSET,
- TIME_TO_LIVE, (byte) IPPROTO_TCP, (Inet4Address) srcIp, (Inet4Address) dstIp);
- } else {
- packetBuilder.writeIpv6Header(VERSION_TRAFFICCLASS_FLOWLABEL, (byte) IPPROTO_TCP,
- HOP_LIMIT, (Inet6Address) srcIp, (Inet6Address) dstIp);
- }
-
- // [3] TCP header
- packetBuilder.writeTcpHeader(srcPort, dstPort, seq, ack, tcpFlags, WINDOW, URGENT_POINTER);
-
- // [4] Payload
- buffer.put(payload);
- // in case data might be reused by caller, restore the position and
- // limit of bytebuffer.
- payload.clear();
-
- return packetBuilder.finalizePacket();
- }
-
protected void sendDownloadPacketTcp(@NonNull final InetAddress srcIp,
@NonNull final InetAddress dstIp, short seq, short ack, byte tcpFlags,
@NonNull final ByteBuffer payload, @NonNull final TetheringTester tester,
diff --git a/Tethering/tests/integration/base/android/net/TetheringTester.java b/Tethering/tests/integration/base/android/net/TetheringTester.java
index 1c0803e..33baf93 100644
--- a/Tethering/tests/integration/base/android/net/TetheringTester.java
+++ b/Tethering/tests/integration/base/android/net/TetheringTester.java
@@ -17,8 +17,12 @@
package android.net;
import static android.net.InetAddresses.parseNumericAddress;
+import static android.system.OsConstants.ICMP_ECHO;
+import static android.system.OsConstants.ICMP_ECHOREPLY;
import static android.system.OsConstants.IPPROTO_ICMP;
import static android.system.OsConstants.IPPROTO_ICMPV6;
+import static android.system.OsConstants.IPPROTO_IP;
+import static android.system.OsConstants.IPPROTO_IPV6;
import static android.system.OsConstants.IPPROTO_TCP;
import static android.system.OsConstants.IPPROTO_UDP;
@@ -27,6 +31,8 @@
import static com.android.net.module.util.DnsPacket.NSSECTION;
import static com.android.net.module.util.DnsPacket.QDSECTION;
import static com.android.net.module.util.HexDump.dumpHexString;
+import static com.android.net.module.util.IpUtils.icmpChecksum;
+import static com.android.net.module.util.IpUtils.ipChecksum;
import static com.android.net.module.util.NetworkStackConstants.ARP_REPLY;
import static com.android.net.module.util.NetworkStackConstants.ARP_REQUEST;
import static com.android.net.module.util.NetworkStackConstants.ETHER_ADDR_LEN;
@@ -38,6 +44,10 @@
import static com.android.net.module.util.NetworkStackConstants.ICMPV6_ND_OPTION_TLLA;
import static com.android.net.module.util.NetworkStackConstants.ICMPV6_NEIGHBOR_SOLICITATION;
import static com.android.net.module.util.NetworkStackConstants.ICMPV6_ROUTER_ADVERTISEMENT;
+import static com.android.net.module.util.NetworkStackConstants.ICMP_CHECKSUM_OFFSET;
+import static com.android.net.module.util.NetworkStackConstants.IPV4_CHECKSUM_OFFSET;
+import static com.android.net.module.util.NetworkStackConstants.IPV4_HEADER_MIN_LEN;
+import static com.android.net.module.util.NetworkStackConstants.IPV4_LENGTH_OFFSET;
import static com.android.net.module.util.NetworkStackConstants.IPV6_ADDR_ALL_NODES_MULTICAST;
import static com.android.net.module.util.NetworkStackConstants.NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE;
import static com.android.net.module.util.NetworkStackConstants.NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED;
@@ -58,6 +68,7 @@
import com.android.net.module.util.DnsPacket;
import com.android.net.module.util.Ipv6Utils;
+import com.android.net.module.util.PacketBuilder;
import com.android.net.module.util.Struct;
import com.android.net.module.util.structs.EthernetHeader;
import com.android.net.module.util.structs.Icmpv4Header;
@@ -101,6 +112,23 @@
DhcpPacket.DHCP_LEASE_TIME,
};
private static final InetAddress LINK_LOCAL = parseNumericAddress("fe80::1");
+ // IPv4 header definition.
+ protected static final short ID = 27149;
+ protected static final short FLAGS_AND_FRAGMENT_OFFSET = (short) 0x4000; // flags=DF, offset=0
+ protected static final byte TIME_TO_LIVE = (byte) 0x40;
+ protected static final byte TYPE_OF_SERVICE = 0;
+
+ // IPv6 header definition.
+ private static final short HOP_LIMIT = 0x40;
+ // version=6, traffic class=0x0, flowlabel=0x0;
+ private static final int VERSION_TRAFFICCLASS_FLOWLABEL = 0x60000000;
+
+ // UDP and TCP header definition.
+ private static final short WINDOW = (short) 0x2000;
+ private static final short URGENT_POINTER = 0;
+
+ // ICMP definition.
+ private static final short ICMPECHO_CODE = 0x0;
public static final String DHCP_HOSTNAME = "testhostname";
@@ -628,6 +656,190 @@
return false;
}
+ @NonNull
+ public static ByteBuffer buildUdpPacket(
+ @Nullable final MacAddress srcMac, @Nullable final MacAddress dstMac,
+ @NonNull final InetAddress srcIp, @NonNull final InetAddress dstIp,
+ short srcPort, short dstPort, @Nullable final ByteBuffer payload)
+ throws Exception {
+ final int ipProto = getIpProto(srcIp, dstIp);
+ final boolean hasEther = (srcMac != null && dstMac != null);
+ final int payloadLen = (payload == null) ? 0 : payload.limit();
+ final ByteBuffer buffer = PacketBuilder.allocate(hasEther, ipProto, IPPROTO_UDP,
+ payloadLen);
+ final PacketBuilder packetBuilder = new PacketBuilder(buffer);
+
+ // [1] Ethernet header
+ if (hasEther) {
+ packetBuilder.writeL2Header(srcMac, dstMac, getEthType(srcIp, dstIp));
+ }
+
+ // [2] IP header
+ if (ipProto == IPPROTO_IP) {
+ packetBuilder.writeIpv4Header(TYPE_OF_SERVICE, ID, FLAGS_AND_FRAGMENT_OFFSET,
+ TIME_TO_LIVE, (byte) IPPROTO_UDP, (Inet4Address) srcIp, (Inet4Address) dstIp);
+ } else {
+ packetBuilder.writeIpv6Header(VERSION_TRAFFICCLASS_FLOWLABEL, (byte) IPPROTO_UDP,
+ HOP_LIMIT, (Inet6Address) srcIp, (Inet6Address) dstIp);
+ }
+
+ // [3] UDP header
+ packetBuilder.writeUdpHeader(srcPort, dstPort);
+
+ // [4] Payload
+ if (payload != null) {
+ buffer.put(payload);
+ // in case data might be reused by caller, restore the position and
+ // limit of bytebuffer.
+ payload.clear();
+ }
+
+ return packetBuilder.finalizePacket();
+ }
+
+ @NonNull
+ public static ByteBuffer buildUdpPacket(@NonNull final InetAddress srcIp,
+ @NonNull final InetAddress dstIp, short srcPort, short dstPort,
+ @Nullable final ByteBuffer payload) throws Exception {
+ return buildUdpPacket(null /* srcMac */, null /* dstMac */, srcIp, dstIp, srcPort,
+ dstPort, payload);
+ }
+
+ @NonNull
+ public static ByteBuffer buildTcpPacket(
+ @Nullable final MacAddress srcMac, @Nullable final MacAddress dstMac,
+ @NonNull final InetAddress srcIp, @NonNull final InetAddress dstIp,
+ short srcPort, short dstPort, final short seq, final short ack,
+ final byte tcpFlags, @NonNull final ByteBuffer payload) throws Exception {
+ final int ipProto = getIpProto(srcIp, dstIp);
+ final boolean hasEther = (srcMac != null && dstMac != null);
+ final ByteBuffer buffer = PacketBuilder.allocate(hasEther, ipProto, IPPROTO_TCP,
+ payload.limit());
+ final PacketBuilder packetBuilder = new PacketBuilder(buffer);
+
+ // [1] Ethernet header
+ if (hasEther) {
+ packetBuilder.writeL2Header(srcMac, dstMac, getEthType(srcIp, dstIp));
+ }
+
+ // [2] IP header
+ if (ipProto == IPPROTO_IP) {
+ packetBuilder.writeIpv4Header(TYPE_OF_SERVICE, ID, FLAGS_AND_FRAGMENT_OFFSET,
+ TIME_TO_LIVE, (byte) IPPROTO_TCP, (Inet4Address) srcIp, (Inet4Address) dstIp);
+ } else {
+ packetBuilder.writeIpv6Header(VERSION_TRAFFICCLASS_FLOWLABEL, (byte) IPPROTO_TCP,
+ HOP_LIMIT, (Inet6Address) srcIp, (Inet6Address) dstIp);
+ }
+
+ // [3] TCP header
+ packetBuilder.writeTcpHeader(srcPort, dstPort, seq, ack, tcpFlags, WINDOW, URGENT_POINTER);
+
+ // [4] Payload
+ buffer.put(payload);
+ // in case data might be reused by caller, restore the position and
+ // limit of bytebuffer.
+ payload.clear();
+
+ return packetBuilder.finalizePacket();
+ }
+
+ // PacketBuilder doesn't support IPv4 ICMP packet. It may need to refactor PacketBuilder first
+ // because ICMP is a specific layer 3 protocol for PacketBuilder which expects packets always
+ // have layer 3 (IP) and layer 4 (TCP, UDP) for now. Since we don't use IPv4 ICMP packet too
+ // much in this test, we just write a ICMP packet builder here.
+ @NonNull
+ public static ByteBuffer buildIcmpEchoPacketV4(
+ @Nullable final MacAddress srcMac, @Nullable final MacAddress dstMac,
+ @NonNull final Inet4Address srcIp, @NonNull final Inet4Address dstIp,
+ int type, short id, short seq) throws Exception {
+ if (type != ICMP_ECHO && type != ICMP_ECHOREPLY) {
+ fail("Unsupported ICMP type: " + type);
+ }
+
+ // Build ICMP echo id and seq fields as payload. Ignore the data field.
+ final ByteBuffer payload = ByteBuffer.allocate(4);
+ payload.putShort(id);
+ payload.putShort(seq);
+ payload.rewind();
+
+ final boolean hasEther = (srcMac != null && dstMac != null);
+ final int etherHeaderLen = hasEther ? Struct.getSize(EthernetHeader.class) : 0;
+ final int ipv4HeaderLen = Struct.getSize(Ipv4Header.class);
+ final int Icmpv4HeaderLen = Struct.getSize(Icmpv4Header.class);
+ final int payloadLen = payload.limit();
+ final ByteBuffer packet = ByteBuffer.allocate(etherHeaderLen + ipv4HeaderLen
+ + Icmpv4HeaderLen + payloadLen);
+
+ // [1] Ethernet header
+ if (hasEther) {
+ final EthernetHeader ethHeader = new EthernetHeader(dstMac, srcMac, ETHER_TYPE_IPV4);
+ ethHeader.writeToByteBuffer(packet);
+ }
+
+ // [2] IP header
+ final Ipv4Header ipv4Header = new Ipv4Header(TYPE_OF_SERVICE,
+ (short) 0 /* totalLength, calculate later */, ID,
+ FLAGS_AND_FRAGMENT_OFFSET, TIME_TO_LIVE, (byte) IPPROTO_ICMP,
+ (short) 0 /* checksum, calculate later */, srcIp, dstIp);
+ ipv4Header.writeToByteBuffer(packet);
+
+ // [3] ICMP header
+ final Icmpv4Header icmpv4Header = new Icmpv4Header((byte) type, ICMPECHO_CODE,
+ (short) 0 /* checksum, calculate later */);
+ icmpv4Header.writeToByteBuffer(packet);
+
+ // [4] Payload
+ packet.put(payload);
+ packet.flip();
+
+ // [5] Finalize packet
+ // Used for updating IP header fields. If there is Ehternet header, IPv4 header offset
+ // in buffer equals ethernet header length because IPv4 header is located next to ethernet
+ // header. Otherwise, IPv4 header offset is 0.
+ final int ipv4HeaderOffset = hasEther ? etherHeaderLen : 0;
+
+ // Populate the IPv4 totalLength field.
+ packet.putShort(ipv4HeaderOffset + IPV4_LENGTH_OFFSET,
+ (short) (ipv4HeaderLen + Icmpv4HeaderLen + payloadLen));
+
+ // Populate the IPv4 header checksum field.
+ packet.putShort(ipv4HeaderOffset + IPV4_CHECKSUM_OFFSET,
+ ipChecksum(packet, ipv4HeaderOffset /* headerOffset */));
+
+ // Populate the ICMP checksum field.
+ packet.putShort(ipv4HeaderOffset + IPV4_HEADER_MIN_LEN + ICMP_CHECKSUM_OFFSET,
+ icmpChecksum(packet, ipv4HeaderOffset + IPV4_HEADER_MIN_LEN,
+ Icmpv4HeaderLen + payloadLen));
+ return packet;
+ }
+
+ @NonNull
+ public static ByteBuffer buildIcmpEchoPacketV4(@NonNull final Inet4Address srcIp,
+ @NonNull final Inet4Address dstIp, int type, short id, short seq)
+ throws Exception {
+ return buildIcmpEchoPacketV4(null /* srcMac */, null /* dstMac */, srcIp, dstIp,
+ type, id, seq);
+ }
+
+ private static short getEthType(@NonNull final InetAddress srcIp,
+ @NonNull final InetAddress dstIp) {
+ return isAddressIpv4(srcIp, dstIp) ? (short) ETHER_TYPE_IPV4 : (short) ETHER_TYPE_IPV6;
+ }
+
+ private static int getIpProto(@NonNull final InetAddress srcIp,
+ @NonNull final InetAddress dstIp) {
+ return isAddressIpv4(srcIp, dstIp) ? IPPROTO_IP : IPPROTO_IPV6;
+ }
+
+ public static boolean isAddressIpv4(@NonNull final InetAddress srcIp,
+ @NonNull final InetAddress dstIp) {
+ if (srcIp instanceof Inet4Address && dstIp instanceof Inet4Address) return true;
+ if (srcIp instanceof Inet6Address && dstIp instanceof Inet6Address) return false;
+
+ fail("Unsupported conditions: srcIp " + srcIp + ", dstIp " + dstIp);
+ return false; // unreachable
+ }
+
public void sendUploadPacket(ByteBuffer packet) throws Exception {
mDownstreamReader.sendResponse(packet);
}
diff --git a/Tethering/tests/integration/src/android/net/EthernetTetheringTest.java b/Tethering/tests/integration/src/android/net/EthernetTetheringTest.java
index 5d57aa5..eed308c 100644
--- a/Tethering/tests/integration/src/android/net/EthernetTetheringTest.java
+++ b/Tethering/tests/integration/src/android/net/EthernetTetheringTest.java
@@ -20,23 +20,17 @@
import static android.net.TetheringManager.CONNECTIVITY_SCOPE_LOCAL;
import static android.net.TetheringManager.TETHERING_ETHERNET;
import static android.net.TetheringTester.TestDnsPacket;
+import static android.net.TetheringTester.buildIcmpEchoPacketV4;
+import static android.net.TetheringTester.buildUdpPacket;
import static android.net.TetheringTester.isExpectedIcmpPacket;
import static android.net.TetheringTester.isExpectedUdpDnsPacket;
import static android.system.OsConstants.ICMP_ECHO;
import static android.system.OsConstants.ICMP_ECHOREPLY;
-import static android.system.OsConstants.IPPROTO_ICMP;
import static com.android.net.module.util.ConnectivityUtils.isIPv6ULA;
import static com.android.net.module.util.HexDump.dumpHexString;
-import static com.android.net.module.util.IpUtils.icmpChecksum;
-import static com.android.net.module.util.IpUtils.ipChecksum;
-import static com.android.net.module.util.NetworkStackConstants.ETHER_TYPE_IPV4;
import static com.android.net.module.util.NetworkStackConstants.ICMPV6_ECHO_REPLY_TYPE;
import static com.android.net.module.util.NetworkStackConstants.ICMPV6_ECHO_REQUEST_TYPE;
-import static com.android.net.module.util.NetworkStackConstants.ICMP_CHECKSUM_OFFSET;
-import static com.android.net.module.util.NetworkStackConstants.IPV4_CHECKSUM_OFFSET;
-import static com.android.net.module.util.NetworkStackConstants.IPV4_HEADER_MIN_LEN;
-import static com.android.net.module.util.NetworkStackConstants.IPV4_LENGTH_OFFSET;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
@@ -53,14 +47,11 @@
import android.util.Log;
import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
import androidx.test.filters.MediumTest;
import androidx.test.runner.AndroidJUnit4;
import com.android.net.module.util.Ipv6Utils;
import com.android.net.module.util.Struct;
-import com.android.net.module.util.structs.EthernetHeader;
-import com.android.net.module.util.structs.Icmpv4Header;
import com.android.net.module.util.structs.Ipv4Header;
import com.android.net.module.util.structs.UdpHeader;
import com.android.testutils.DevSdkIgnoreRule;
@@ -96,7 +87,6 @@
private static final String TAG = EthernetTetheringTest.class.getSimpleName();
private static final short DNS_PORT = 53;
- private static final short ICMPECHO_CODE = 0x0;
private static final short ICMPECHO_ID = 0x0;
private static final short ICMPECHO_SEQ = 0x0;
@@ -564,85 +554,6 @@
runClatUdpTest();
}
- // PacketBuilder doesn't support IPv4 ICMP packet. It may need to refactor PacketBuilder first
- // because ICMP is a specific layer 3 protocol for PacketBuilder which expects packets always
- // have layer 3 (IP) and layer 4 (TCP, UDP) for now. Since we don't use IPv4 ICMP packet too
- // much in this test, we just write a ICMP packet builder here.
- // TODO: move ICMPv4 packet build function to common utilis.
- @NonNull
- private ByteBuffer buildIcmpEchoPacketV4(
- @Nullable final MacAddress srcMac, @Nullable final MacAddress dstMac,
- @NonNull final Inet4Address srcIp, @NonNull final Inet4Address dstIp,
- int type, short id, short seq) throws Exception {
- if (type != ICMP_ECHO && type != ICMP_ECHOREPLY) {
- fail("Unsupported ICMP type: " + type);
- }
-
- // Build ICMP echo id and seq fields as payload. Ignore the data field.
- final ByteBuffer payload = ByteBuffer.allocate(4);
- payload.putShort(id);
- payload.putShort(seq);
- payload.rewind();
-
- final boolean hasEther = (srcMac != null && dstMac != null);
- final int etherHeaderLen = hasEther ? Struct.getSize(EthernetHeader.class) : 0;
- final int ipv4HeaderLen = Struct.getSize(Ipv4Header.class);
- final int Icmpv4HeaderLen = Struct.getSize(Icmpv4Header.class);
- final int payloadLen = payload.limit();
- final ByteBuffer packet = ByteBuffer.allocate(etherHeaderLen + ipv4HeaderLen
- + Icmpv4HeaderLen + payloadLen);
-
- // [1] Ethernet header
- if (hasEther) {
- final EthernetHeader ethHeader = new EthernetHeader(dstMac, srcMac, ETHER_TYPE_IPV4);
- ethHeader.writeToByteBuffer(packet);
- }
-
- // [2] IP header
- final Ipv4Header ipv4Header = new Ipv4Header(TYPE_OF_SERVICE,
- (short) 0 /* totalLength, calculate later */, ID,
- FLAGS_AND_FRAGMENT_OFFSET, TIME_TO_LIVE, (byte) IPPROTO_ICMP,
- (short) 0 /* checksum, calculate later */, srcIp, dstIp);
- ipv4Header.writeToByteBuffer(packet);
-
- // [3] ICMP header
- final Icmpv4Header icmpv4Header = new Icmpv4Header((byte) type, ICMPECHO_CODE,
- (short) 0 /* checksum, calculate later */);
- icmpv4Header.writeToByteBuffer(packet);
-
- // [4] Payload
- packet.put(payload);
- packet.flip();
-
- // [5] Finalize packet
- // Used for updating IP header fields. If there is Ehternet header, IPv4 header offset
- // in buffer equals ethernet header length because IPv4 header is located next to ethernet
- // header. Otherwise, IPv4 header offset is 0.
- final int ipv4HeaderOffset = hasEther ? etherHeaderLen : 0;
-
- // Populate the IPv4 totalLength field.
- packet.putShort(ipv4HeaderOffset + IPV4_LENGTH_OFFSET,
- (short) (ipv4HeaderLen + Icmpv4HeaderLen + payloadLen));
-
- // Populate the IPv4 header checksum field.
- packet.putShort(ipv4HeaderOffset + IPV4_CHECKSUM_OFFSET,
- ipChecksum(packet, ipv4HeaderOffset /* headerOffset */));
-
- // Populate the ICMP checksum field.
- packet.putShort(ipv4HeaderOffset + IPV4_HEADER_MIN_LEN + ICMP_CHECKSUM_OFFSET,
- icmpChecksum(packet, ipv4HeaderOffset + IPV4_HEADER_MIN_LEN,
- Icmpv4HeaderLen + payloadLen));
- return packet;
- }
-
- @NonNull
- private ByteBuffer buildIcmpEchoPacketV4(@NonNull final Inet4Address srcIp,
- @NonNull final Inet4Address dstIp, int type, short id, short seq)
- throws Exception {
- return buildIcmpEchoPacketV4(null /* srcMac */, null /* dstMac */, srcIp, dstIp,
- type, id, seq);
- }
-
@Test
public void testIcmpv4Echo() throws Exception {
final TetheringTester tester = initTetheringTester(toList(TEST_IP4_ADDR),