--- a/net/minecraft/network/protocol/Packet.java
+++ b/net/minecraft/network/protocol/Packet.java
@@ -11,6 +_,19 @@
 
     void handle(T handler);
 
+    // Paper start
+    default boolean hasLargePacketFallback() {
+        return false;
+    }
+
+    /**
+     * override {@link #hasLargePacketFallback()} to return true when overriding in subclasses
+     */
+    default boolean packetTooLarge(net.minecraft.network.Connection manager) {
+        return false;
+    }
+    // Paper end
+
     default boolean isSkippable() {
         return false;
     }
@@ -22,4 +_,32 @@
     static <B extends ByteBuf, T extends Packet<?>> StreamCodec<B, T> codec(StreamMemberEncoder<B, T> encoder, StreamDecoder<B, T> decoder) {
         return StreamCodec.ofMember(encoder, decoder);
     }
+
+    // Paper start
+    /**
+     * @param player Null if not at PLAY stage yet
+     */
+    default void onPacketDispatch(@org.jetbrains.annotations.Nullable net.minecraft.server.level.ServerPlayer player) {
+    }
+
+    /**
+     * @param player Null if not at PLAY stage yet
+     * @param future Can be null if packet was cancelled
+     */
+    default void onPacketDispatchFinish(@org.jetbrains.annotations.Nullable net.minecraft.server.level.ServerPlayer player, @org.jetbrains.annotations.Nullable io.netty.channel.ChannelFuture future) {
+    }
+
+    default boolean hasFinishListener() {
+        return false;
+    }
+
+    default boolean isReady() {
+        return true;
+    }
+
+    @org.jetbrains.annotations.Nullable
+    default java.util.List<Packet<?>> getExtraPackets() {
+        return null;
+    }
+    // Paper end
 }
