Improve GRE counting. Actually use the GRE decoder. Register the GRE counter.

src/decode-gre.c

@@ -20,6 +20,8 @@ void DecodeGRE(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p, uint8_t *pkt, u
     uint16_t header_len = GRE_HDR_LEN;
     GRESreHdr *gsre = NULL;
 
+    PerfCounterIncr(dtv->counter_gre, tv->pca);
+
     if(len < GRE_HDR_LEN)    {
         DECODER_SET_EVENT(p,GRE_PKT_TOO_SMALL);
         return;
@@ -170,7 +172,6 @@ void DecodeGRE(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p, uint8_t *pkt, u
     {
         case ETHERNET_TYPE_IP:
             {
-                PerfCounterIncr(dtv->counter_gre, tv->pca);
                 if (pq != NULL) {
 
                     Packet *tp = TunnelPktSetup(tv, dtv, p, pkt + header_len, len - header_len, GRE_GET_PROTO(p->greh));
@@ -184,7 +185,6 @@ void DecodeGRE(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p, uint8_t *pkt, u
 
         case GRE_PROTO_PPP:
             {
-                PerfCounterIncr(dtv->counter_gre, tv->pca);
                 if (pq != NULL) {
 
                     Packet *tp = TunnelPktSetup(tv, dtv, p, pkt + header_len, len - header_len, GRE_GET_PROTO(p->greh));
@@ -198,7 +198,6 @@ void DecodeGRE(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p, uint8_t *pkt, u
 
         case ETHERNET_TYPE_IPV6:
             {
-                PerfCounterIncr(dtv->counter_gre, tv->pca);
                 if (pq != NULL) {
 
                     Packet *tp = TunnelPktSetup(tv, dtv, p, pkt + header_len, len - header_len, GRE_GET_PROTO(p->greh));

src/decode-ipv4.c

@@ -553,6 +553,10 @@ void DecodeIPV4(ThreadVars *tv, DecodeThreadVars *dtv, Packet *p, uint8_t *pkt,
                 }
                 break;
             }
+        case IPPROTO_GRE:
+            return(DecodeGRE(tv, dtv, p, pkt + IPV4_GET_HLEN(p),
+                             IPV4_GET_IPLEN(p) - IPV4_GET_HLEN(p), pq));
+            break;
     }
 
     return;

src/decode.h

@@ -410,6 +410,7 @@ void DecodeICMPV4(ThreadVars *, DecodeThreadVars *, Packet *, uint8_t *, uint16_
 void DecodeICMPV6(ThreadVars *, DecodeThreadVars *, Packet *, uint8_t *, uint16_t, PacketQueue *);
 void DecodeTCP(ThreadVars *, DecodeThreadVars *, Packet *, uint8_t *, uint16_t, PacketQueue *);
 void DecodeUDP(ThreadVars *, DecodeThreadVars *, Packet *, uint8_t *, uint16_t, PacketQueue *);
+void DecodeGRE(ThreadVars *, DecodeThreadVars *, Packet *, uint8_t *, uint16_t, PacketQueue *);
 
 Packet *SetupPkt (void);
 Packet *TunnelPktSetup(ThreadVars *, DecodeThreadVars *, Packet *, uint8_t *, uint16_t, uint8_t);

src/source-nfq.c

@@ -504,6 +504,7 @@ int DecodeNFQThreadInit(ThreadVars *tv, void *initdata, void **data)
     dtv->counter_icmpv6 = PerfTVRegisterCounter("decoder.icmpv6", tv, TYPE_UINT64, "NULL");
     dtv->counter_ppp = PerfTVRegisterCounter("decoder.ppp", tv, TYPE_UINT64, "NULL");
     dtv->counter_pppoe = PerfTVRegisterCounter("decoder.pppoe", tv, TYPE_UINT64, "NULL");
+    dtv->counter_gre = PerfTVRegisterCounter("decoder.gre", tv, TYPE_UINT64, "NULL");
     dtv->counter_avg_pkt_size = PerfTVRegisterAvgCounter("decoder.avg_pkt_size", tv,
                                                          TYPE_DOUBLE, "NULL");
     dtv->counter_max_pkt_size = PerfTVRegisterMaxCounter("decoder.max_pkt_size", tv,

src/source-pcap-file.c

@@ -208,6 +208,7 @@ int DecodePcapFileThreadInit(ThreadVars *tv, void *initdata, void **data)
     dtv->counter_icmpv6 = PerfTVRegisterCounter("decoder.icmpv6", tv, TYPE_UINT64, "NULL");
     dtv->counter_ppp = PerfTVRegisterCounter("decoder.ppp", tv, TYPE_UINT64, "NULL");
     dtv->counter_pppoe = PerfTVRegisterCounter("decoder.pppoe", tv, TYPE_UINT64, "NULL");
+    dtv->counter_gre = PerfTVRegisterCounter("decoder.gre", tv, TYPE_UINT64, "NULL");
     dtv->counter_avg_pkt_size = PerfTVRegisterAvgCounter("decoder.avg_pkt_size", tv,
                                                          TYPE_DOUBLE, "NULL");
     dtv->counter_max_pkt_size = PerfTVRegisterMaxCounter("decoder.max_pkt_size", tv,

src/source-pcap.c

@@ -341,6 +341,7 @@ int DecodePcapThreadInit(ThreadVars *tv, void *initdata, void **data)
     dtv->counter_icmpv6 = PerfTVRegisterCounter("decoder.icmpv6", tv, TYPE_UINT64, "NULL");
     dtv->counter_ppp = PerfTVRegisterCounter("decoder.ppp", tv, TYPE_UINT64, "NULL");
     dtv->counter_pppoe = PerfTVRegisterCounter("decoder.pppoe", tv, TYPE_UINT64, "NULL");
+    dtv->counter_gre = PerfTVRegisterCounter("decoder.gre", tv, TYPE_UINT64, "NULL");
     dtv->counter_avg_pkt_size = PerfTVRegisterAvgCounter("decoder.avg_pkt_size", tv,
                                                          TYPE_DOUBLE, "NULL");
     dtv->counter_max_pkt_size = PerfTVRegisterMaxCounter("decoder.max_pkt_size", tv,