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Commit 3edb9bab authored by TreeHugger Robot's avatar TreeHugger Robot Committed by Android (Google) Code Review
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Merge "Don't crash when receiving an RTM_DELNEIGH or NUD_FAILED." into rvc-dev

parents c026d54c 8bc1e54d

packages/Tethering/src/android/net/ip/IpServer.java

+7 −2
Original line number Diff line number Diff line
@@ -122,6 +122,8 @@ public class IpServer extends StateMachine { 
    // TODO: have this configurable

    private static final int DHCP_LEASE_TIME_SECS = 3600;



    private static final MacAddress NULL_MAC_ADDRESS = MacAddress.fromString("00:00:00:00:00:00");



    private static final String TAG = "IpServer";

    private static final boolean DBG = false;

    private static final boolean VDBG = false;
@@ -902,9 +904,12 @@ public class IpServer extends StateMachine { 
            return;

        }



        // When deleting rules, we still need to pass a non-null MAC, even though it's ignored.

        // Do this here instead of in the Ipv6ForwardingRule constructor to ensure that we never

        // add rules with a null MAC, only delete them.

        MacAddress dstMac = e.isValid() ? e.macAddr : NULL_MAC_ADDRESS;

        Ipv6ForwardingRule rule = new Ipv6ForwardingRule(upstreamIfindex,

                mInterfaceParams.index, (Inet6Address) e.ip, mInterfaceParams.macAddr,

                e.macAddr);

                mInterfaceParams.index, (Inet6Address) e.ip, mInterfaceParams.macAddr, dstMac);

        if (e.isValid()) {

            addIpv6ForwardingRule(rule);

        } else {

packages/Tethering/tests/unit/src/android/net/ip/IpServerTest.java

+5 −3
Original line number Diff line number Diff line
@@ -587,6 +587,7 @@ public class IpServerTest { 
        final InetAddress neighB = InetAddresses.parseNumericAddress("2001:db8::2");

        final InetAddress neighLL = InetAddresses.parseNumericAddress("fe80::1");

        final InetAddress neighMC = InetAddresses.parseNumericAddress("ff02::1234");

        final MacAddress macNull = MacAddress.fromString("00:00:00:00:00:00");

        final MacAddress macA = MacAddress.fromString("00:00:00:00:00:0a");

        final MacAddress macB = MacAddress.fromString("11:22:33:00:00:0b");
@@ -612,13 +613,14 @@ public class IpServerTest { 
        verifyNoMoreInteractions(mNetd);



        // A neighbor that is no longer valid causes the rule to be removed.

        recvNewNeigh(myIfindex, neighA, NUD_FAILED, macA);

        verify(mNetd).tetherOffloadRuleRemove(matches(UPSTREAM_IFINDEX, neighA, macA));

        // NUD_FAILED events do not have a MAC address.

        recvNewNeigh(myIfindex, neighA, NUD_FAILED, null);

        verify(mNetd).tetherOffloadRuleRemove(matches(UPSTREAM_IFINDEX, neighA, macNull));

        reset(mNetd);



        // A neighbor that is deleted causes the rule to be removed.

        recvDelNeigh(myIfindex, neighB, NUD_STALE, macB);

        verify(mNetd).tetherOffloadRuleRemove(matches(UPSTREAM_IFINDEX, neighB, macB));

        verify(mNetd).tetherOffloadRuleRemove(matches(UPSTREAM_IFINDEX, neighB, macNull));

        reset(mNetd);



        // Upstream changes result in deleting and re-adding the rules.