Add DhcpStateMachine for interation with dhcpcd

- Supports wakeup and renewal on dhcp
- Supports multiple controllers to use the state machine
  simultaneously
- Optionally, a controller can request a notification prior
  to DHCP request/renewal being sent

Change-Id: I3a9d7e6a02ff26be3a86ddca6964683ad3c28f93

1 files changed, 10 insertions, 0 deletions

diff --git a/core/java/android/net/NetworkUtils.java b/core/java/android/net/NetworkUtils.java
index b3f3988..823d10f 100644
--- a/core/java/android/net/NetworkUtils.java
+++ b/core/java/android/net/NetworkUtils.java
@@ -80,6 +80,16 @@ public class NetworkUtils {
     public native static boolean runDhcp(String interfaceName, DhcpInfoInternal ipInfo);
 
     /**
+     * Initiate renewal on the Dhcp client daemon. This call blocks until it obtains
+     * a result (either success or failure) from the daemon.
+     * @param interfaceName the name of the interface to configure
+     * @param ipInfo if the request succeeds, this object is filled in with
+     * the IP address information.
+     * @return {@code true} for success, {@code false} for failure
+     */
+    public native static boolean runDhcpRenew(String interfaceName, DhcpInfoInternal ipInfo);
+
+    /**
      * Shut down the DHCP client daemon.
      * @param interfaceName the name of the interface for which the daemon
      * should be stopped