flow: update lastts in FlowHandlePacketUpdate

This allows to make it conditional to the state of packet and
then trigger modified behavior.

src/flow-hash.c

@@ -489,8 +489,6 @@ Flow *FlowGetFlowFromHash(ThreadVars *tv, DecodeThreadVars *dtv, const Packet *p
         f->fb = fb;
         FlowUpdateState(f, FLOW_STATE_NEW);
 
-        /* update the last seen timestamp of this flow */
-        COPY_TIMESTAMP(&p->ts,&f->lastts);
         FlowReference(dest, f);
 
         FBLOCK_UNLOCK(fb);
@@ -526,8 +524,6 @@ Flow *FlowGetFlowFromHash(ThreadVars *tv, DecodeThreadVars *dtv, const Packet *p
                 f->fb = fb;
                 FlowUpdateState(f, FLOW_STATE_NEW);
 
-                /* update the last seen timestamp of this flow */
-                COPY_TIMESTAMP(&p->ts,&f->lastts);
                 FlowReference(dest, f);
 
                 FBLOCK_UNLOCK(fb);
@@ -562,8 +558,6 @@ Flow *FlowGetFlowFromHash(ThreadVars *tv, DecodeThreadVars *dtv, const Packet *p
                     }
                 }
 
-                /* update the last seen timestamp of this flow */
-                COPY_TIMESTAMP(&p->ts,&f->lastts);
                 FlowReference(dest, f);
 
                 FBLOCK_UNLOCK(fb);
@@ -582,8 +576,6 @@ Flow *FlowGetFlowFromHash(ThreadVars *tv, DecodeThreadVars *dtv, const Packet *p
         }
     }
 
-    /* update the last seen timestamp of this flow */
-    COPY_TIMESTAMP(&p->ts,&f->lastts);
     FlowReference(dest, f);
 
     FBLOCK_UNLOCK(fb);

src/flow-worker.c

@@ -42,6 +42,8 @@
 
 #include "util-validate.h"
 
+#include "flow-util.h"
+
 typedef DetectEngineThreadCtx *DetectEngineThreadCtxPtr;
 
 typedef struct FlowWorkerThreadData_ {

src/flow.c

@@ -223,6 +223,13 @@ void FlowHandlePacketUpdate(Flow *f, Packet *p)
 {
     SCLogDebug("packet %"PRIu64" -- flow %p", p->pcap_cnt, f);
 
+    int state = SC_ATOMIC_GET(f->flow_state);
+
+    if (state != FLOW_STATE_CAPTURE_BYPASSED) {
+        /* update the last seen timestamp of this flow */
+        COPY_TIMESTAMP(&p->ts, &f->lastts);
+    }
+
     /* update flags and counters */
     if (FlowGetPacketDirection(f, p) == TOSERVER) {
         f->todstpktcnt++;