defrag: set flag on packets reassembled from fragments

Set the PKT_REBUILT_FRAGMENT on packets that are re-assembled
from fragments.

src/decode.h

@@ -1100,6 +1100,9 @@ int DecoderParseDataFromFile(char *filename, DecoderFunc Decoder);
 #define PKT_PROTO_DETECT_TS_DONE        (1<<23)
 #define PKT_PROTO_DETECT_TC_DONE        (1<<24)
 
+#define PKT_REBUILT_FRAGMENT            (1<<25)     /**< Packet is rebuilt from
+                                                     * fragments. */
+
 /** \brief return 1 if the packet is a pseudo packet */
 #define PKT_IS_PSEUDOPKT(p) ((p)->flags & PKT_PSEUDO_STREAM_END)
 

src/defrag.c

@@ -294,6 +294,7 @@ Defrag4Reassemble(ThreadVars *tv, DefragTracker *tracker, Packet *p)
         goto error_remove_tracker;
     }
     PKT_SET_SRC(rp, PKT_SRC_DEFRAG);
+    rp->flags |= PKT_REBUILT_FRAGMENT;
     rp->recursion_level = p->recursion_level;
 
     int fragmentable_offset = 0;