Add Loopback and Timestamp fields to addresses.

- Loopback=1 for loopback packets, 0 otherwise.
- Timestamp is the time when packet captured.

include/windivert.h

@@ -1,6 +1,6 @@
 /*
  * windivert.h
- * (C) 2016, all rights reserved,
+ * (C) 2017, all rights reserved,
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published by
@@ -57,9 +57,12 @@ extern "C" {
  */
 typedef struct
 {
+    INT64  Timestamp;                   /* Packet's timestamp. */
     UINT32 IfIdx;                       /* Packet's interface index. */
     UINT32 SubIfIdx;                    /* Packet's sub-interface index. */
-    UINT8  Direction;                   /* Packet's direction. */
+    UINT8  Direction:1;                 /* Packet's direction. */
+    UINT8  Loopback:1;                  /* Packet is loopback? */
+    UINT8  Reserved:6;
 } WINDIVERT_ADDRESS, *PWINDIVERT_ADDRESS;
 
 #define WINDIVERT_DIRECTION_OUTBOUND    0

include/windivert_device.h

@@ -104,8 +104,9 @@
 #define WINDIVERT_FILTER_FIELD_UDP_LENGTH           55
 #define WINDIVERT_FILTER_FIELD_UDP_CHECKSUM         56
 #define WINDIVERT_FILTER_FIELD_UDP_PAYLOADLENGTH    57
+#define WINDIVERT_FILTER_FIELD_LOOPBACK             58
 #define WINDIVERT_FILTER_FIELD_MAX                  \
-    WINDIVERT_FILTER_FIELD_UDP_PAYLOADLENGTH
+    WINDIVERT_FILTER_FIELD_LOOPBACK
 
 #define WINDIVERT_FILTER_TEST_EQ                    0
 #define WINDIVERT_FILTER_TEST_NEQ                   1