commit acc47e60dac1b61af810384cb069574962f5a465
author Xiao Ma <xiaom@google.com> Wed Dec 23 07:55:44 2020 +0000
committer Xiao Ma <xiaom@google.com> Wed Dec 23 08:01:45 2020 +0000
tree 655f946e370b23584006cd1085fad47cb51618ba
parent 127532321c01ce180dca72f4b14857f781ebe71b

Add ETHER_BROADCAST and DEFAULT_LINK_MTU constants.

ETHER_BROADCAST is used to fill the destination mac address of ether
header, it was defined in the DhcpPacket.java, move it to a common
place for other usecases.

Also have a link mtu constant(default value is 1500 bytes), irrelevant
to specific link-layer type.

Bug: 175830307
Test: m
Change-Id: I422d284cd8fa943bd745ad29229a54515135a3c4

staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java

diff --git a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
index 1572fe0..a227505 100644
--- a/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
+++ b/staticlibs/framework/com/android/net/module/util/NetworkStackConstants.java
@@ -46,6 +46,12 @@
     public static final int ETHER_TYPE_IPV6 = 0x86dd;
     public static final int ETHER_HEADER_LEN = 14;
     public static final int ETHER_MTU = 1500;
+    public static final byte[] ETHER_BROADCAST = new byte[] {
+            (byte) 0xff, (byte) 0xff, (byte) 0xff,
+            (byte) 0xff, (byte) 0xff, (byte) 0xff,
+    };
+
+    public static final int DEFAULT_LINK_MTU = 1500;
 
     /**
      * ARP constants.