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Have IpManager track L2-L4 signaling traffic required for IP connectivity.

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Test: as follows
    - built and flashed
    - observed logcat
    - observed "dumpsys wifi ipmanager"
    - runtest BlockingSocketReaderTest passes
    - runtest ConnectivityPacketSummaryTest passes
Bug: 21859053
Bug: 26101306
Bug: 31742572
Bug: 31707128
Bug: 33531488

Change-Id: Ibecaf809dcc1813924b25749e8ba8eb2d4bdf114
This commit is contained in:
Erik Kline 2016-10-19 17:42:01 +09:00
commit 4adb18679e
1 changed files with 103 additions and 15 deletions
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11
core/java/android/net/NetworkUtils.java
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@ -51,6 +51,17 @@ public class NetworkUtils {
*/
public native static void attachRaFilter(FileDescriptor fd, int packetType) throws SocketException;
/**
* Attaches a socket filter that accepts L2-L4 signaling traffic required for IP connectivity.
*
* This includes: all ARP, ICMPv6 RS/RA/NS/NA messages, and DHCPv4 exchanges.
*
* @param fd the socket's {@link FileDescriptor}.
* @param packetType the hardware address type, one of ARPHRD_*.
*/
public native static void attachControlPacketFilter(FileDescriptor fd, int packetType)
throws SocketException;
/**
* Configures a socket for receiving ICMPv6 router solicitations and sending advertisements.
* @param fd the socket's {@link FileDescriptor}.