Add PFCP protocol dissector (ntop#2342)

0xA50C1A1 · Mar 13, 2024 · 8fad779 · 8fad779
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diff --git a/doc/protocols.rst b/doc/protocols.rst
@@ -679,3 +679,12 @@ References: `Main site: <https://meet.google.com/>`_
 Notes:
 
 - nDPI usually uses different protocol ids for the generic application traffic and for its "realtime" traffic (examples: NDPI_PROTOCOL_MEET/NDPI_PROTOCOL_GOOGLE_CALL, NDPI_PROTOCOL_WHATSAPP/NDPI_PROTOCOL_WHATSAPP_CALL, ...)
+
+
+.. _Proto 405:
+
+`NDPI_PROTOCOL_PFCP`
+=====================
+PFCP is a protocol used for communicating between control plane (CP) and user plane (UP) functions in 4G and 5G networks.
+
+References: `Protocol Specs: <https://www.etsi.org/deliver/etsi_ts/129200_129299/129244/16.05.00_60/ts_129244v160500p.pdf>`_
diff --git a/src/include/ndpi_private.h b/src/include/ndpi_private.h
@@ -913,6 +913,7 @@ void init_dlep_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int
 void init_bfd_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_netease_games_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_pathofexile_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
+void init_pfcp_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 
 #endif
 

diff --git a/src/include/ndpi_protocol_ids.h b/src/include/ndpi_protocol_ids.h
@@ -433,6 +433,7 @@ typedef enum {
   NDPI_PROTOCOL_NETEASE_GAMES         = 402,
   NDPI_PROTOCOL_PATHOFEXILE           = 403,
   NDPI_PROTOCOL_GOOGLE_CALL           = 404, /* Voip/audio/video calls from Google Chat/Meet/... */
+  NDPI_PROTOCOL_PFCP                  = 405,
 
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_protocol_ids.h"

diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
@@ -2271,6 +2271,10 @@ static void ndpi_init_protocol_defaults(struct ndpi_detection_module_struct *ndp
 			  "PathofExile", NDPI_PROTOCOL_CATEGORY_GAME,
 			  ndpi_build_default_ports(ports_a, 0, 0, 0, 0, 0) /* TCP */,
 			  ndpi_build_default_ports(ports_b, 0, 0, 0, 0, 0) /* UDP */);
+  ndpi_set_proto_defaults(ndpi_str, 1 /* cleartext */, 0 /* nw proto */, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_PFCP,
+			  "PFCP", NDPI_PROTOCOL_CATEGORY_NETWORK,
+			  ndpi_build_default_ports(ports_a, 0, 0, 0, 0, 0) /* TCP */,
+			  ndpi_build_default_ports(ports_b, 8805, 0, 0, 0, 0) /* UDP */);
 
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_main.c"
@@ -6127,6 +6131,9 @@ static int ndpi_callback_init(struct ndpi_detection_module_struct *ndpi_str) {
   /* Path of Exile */
   init_pathofexile_dissector(ndpi_str, &a);
 
+  /* Packet Forwarding Control Protocol */
+  init_pfcp_dissector(ndpi_str, &a);
+
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_main_init.c"
 #endif

diff --git a/src/lib/protocols/pfcp.c b/src/lib/protocols/pfcp.c
@@ -0,0 +1,72 @@
+/*
+ * pfcp.c
+ *
+ * Packet Forwarding Control Protocol
+ * 
+ * Copyright (C) 2024 - ntop.org
+ * Copyright (C) 2024 - V.G <[email protected]>
+ *
+ * This file is part of nDPI, an open source deep packet inspection
+ * library based on the OpenDPI and PACE technology by ipoque GmbH
+ *
+ * nDPI is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * nDPI is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with nDPI.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+
+#include "ndpi_protocol_ids.h"
+
+#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_PFCP
+
+#include "ndpi_api.h"
+#include "ndpi_private.h"
+
+static void ndpi_search_pfcp(struct ndpi_detection_module_struct *ndpi_struct,
+                             struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct const * const packet = &ndpi_struct->packet;
+
+  NDPI_LOG_DBG(ndpi_struct, "search PFCP\n");
+
+  if (packet->payload_packet_len > 12 &&
+      (ntohs(packet->udp->dest) == 8805 || ntohs(packet->udp->source) == 8805))
+  {
+    u_int8_t version = packet->payload[0] & 0x0F;
+    /* Values from 18 to 49, 58 to 99 and 100 to 255 are reserved for future use 
+     * and aren't used now. */
+    u_int8_t message_type = packet->payload[1];
+    if (version == 1 && (message_type <= 17 || (message_type - 50) <= 7) &&
+        ntohs(get_u_int16_t(packet->payload, 2)) == (u_int16_t)(packet->payload_packet_len-4))
+    {
+      NDPI_LOG_INFO(ndpi_struct, "found PFCP\n");
+      ndpi_set_detected_protocol(ndpi_struct, flow,
+                                 NDPI_PROTOCOL_PFCP, NDPI_PROTOCOL_UNKNOWN,
+                                 NDPI_CONFIDENCE_DPI);
+      return;
+    }
+  }
+
+  NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+}
+void init_pfcp_dissector(struct ndpi_detection_module_struct *ndpi_struct,
+                             u_int32_t *id)
+{
+  ndpi_set_bitmask_protocol_detection("PFCP", ndpi_struct, *id,
+                                      NDPI_PROTOCOL_PFCP,
+                                      ndpi_search_pfcp,
+                                      NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD,
+                                      SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+                                      ADD_TO_DETECTION_BITMASK);
+
+  *id += 1;
+}
diff --git a/tests/cfgs/caches_cfg/result/teams.pcap.out b/tests/cfgs/caches_cfg/result/teams.pcap.out
@@ -7,7 +7,7 @@ Confidence Unknown          : 1 (flows)
 Confidence Match by port    : 1 (flows)
 Confidence DPI (partial)    : 1 (flows)
 Confidence DPI              : 80 (flows)
-Num dissector calls: 539 (6.49 diss/flow)
+Num dissector calls: 540 (6.51 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/9/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/caches_global/result/lru_ipv6_caches.pcapng.out b/tests/cfgs/caches_global/result/lru_ipv6_caches.pcapng.out
@@ -2,7 +2,7 @@ DPI Packets (TCP):	9	(3.00 pkts/flow)
 DPI Packets (UDP):	30	(3.33 pkts/flow)
 Confidence DPI (cache)      : 4 (flows)
 Confidence DPI              : 8 (flows)
-Num dissector calls: 648 (54.00 diss/flow)
+Num dissector calls: 650 (54.17 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 25/7/2 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/caches_global/result/teams.pcap.out b/tests/cfgs/caches_global/result/teams.pcap.out
@@ -7,7 +7,7 @@ Confidence Unknown          : 1 (flows)
 Confidence Match by port    : 1 (flows)
 Confidence DPI (partial)    : 5 (flows)
 Confidence DPI              : 76 (flows)
-Num dissector calls: 539 (6.49 diss/flow)
+Num dissector calls: 540 (6.51 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/9/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/caches_global/result/zoom_p2p.pcapng.out b/tests/cfgs/caches_global/result/zoom_p2p.pcapng.out
@@ -4,7 +4,7 @@ DPI Packets (UDP):	52	(5.20 pkts/flow)
 DPI Packets (other):	2	(1.00 pkts/flow)
 Confidence DPI (partial cache): 4 (flows)
 Confidence DPI              : 8 (flows)
-Num dissector calls: 862 (71.83 diss/flow)
+Num dissector calls: 866 (72.17 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/12/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/pcap/pfcp.pcapng b/tests/cfgs/default/pcap/pfcp.pcapng
diff --git a/tests/cfgs/default/result/1kxun.pcap.out b/tests/cfgs/default/result/1kxun.pcap.out
@@ -5,7 +5,7 @@ DPI Packets (UDP):	120	(1.21 pkts/flow)
 Confidence Unknown          : 14 (flows)
 Confidence Match by port    : 6 (flows)
 Confidence DPI              : 177 (flows)
-Num dissector calls: 5010 (25.43 diss/flow)
+Num dissector calls: 5024 (25.50 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/60/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/4in4tunnel.pcap.out b/tests/cfgs/default/result/4in4tunnel.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (UDP):	5	(5.00 pkts/flow)
 Confidence Unknown          : 1 (flows)
-Num dissector calls: 193 (193.00 diss/flow)
+Num dissector calls: 194 (194.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/6in6tunnel.pcap.out b/tests/cfgs/default/result/6in6tunnel.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (UDP):	2	(2.00 pkts/flow)
 Confidence Unknown          : 1 (flows)
-Num dissector calls: 148 (148.00 diss/flow)
+Num dissector calls: 149 (149.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/EAQ.pcap.out b/tests/cfgs/default/result/EAQ.pcap.out
@@ -1,7 +1,7 @@
 DPI Packets (TCP):	12	(6.00 pkts/flow)
 DPI Packets (UDP):	116	(4.00 pkts/flow)
 Confidence DPI              : 31 (flows)
-Num dissector calls: 4981 (160.68 diss/flow)
+Num dissector calls: 5010 (161.61 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/FAX-Call-t38-CA-TDM-SIP-FB-1.pcap.out b/tests/cfgs/default/result/FAX-Call-t38-CA-TDM-SIP-FB-1.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (UDP):	7	(1.40 pkts/flow)
 Confidence DPI              : 5 (flows)
-Num dissector calls: 157 (31.40 diss/flow)
+Num dissector calls: 158 (31.60 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/KakaoTalk_talk.pcap.out b/tests/cfgs/default/result/KakaoTalk_talk.pcap.out
@@ -5,7 +5,7 @@ DPI Packets (UDP):	10	(2.00 pkts/flow)
 Confidence Match by port    : 8 (flows)
 Confidence DPI              : 11 (flows)
 Confidence Match by IP      : 1 (flows)
-Num dissector calls: 1222 (61.10 diss/flow)
+Num dissector calls: 1224 (61.20 diss/flow)
 LRU cache ookla:      0/2/0 (insert/search/found)
 LRU cache bittorrent: 0/27/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/anyconnect-vpn.pcap.out b/tests/cfgs/default/result/anyconnect-vpn.pcap.out
@@ -6,7 +6,7 @@ DPI Packets (other):	10	(1.00 pkts/flow)
 Confidence Unknown          : 2 (flows)
 Confidence Match by port    : 6 (flows)
 Confidence DPI              : 61 (flows)
-Num dissector calls: 871 (12.62 diss/flow)
+Num dissector calls: 872 (12.64 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/24/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/collectd.pcap.out b/tests/cfgs/default/result/collectd.pcap.out
@@ -3,7 +3,7 @@ Guessed flow protos:	3
 DPI Packets (UDP):	13	(1.62 pkts/flow)
 Confidence Match by port    : 3 (flows)
 Confidence DPI              : 5 (flows)
-Num dissector calls: 470 (58.75 diss/flow)
+Num dissector calls: 473 (59.12 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/9/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/custom_rules_ipv6.pcapng.out b/tests/cfgs/default/result/custom_rules_ipv6.pcapng.out
@@ -1,7 +1,7 @@
 DPI Packets (UDP):	7	(1.00 pkts/flow)
 Confidence Unknown          : 1 (flows)
 Confidence Match by custom rule: 6 (flows)
-Num dissector calls: 132 (18.86 diss/flow)
+Num dissector calls: 133 (19.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/custom_rules_same-ip_multiple_ports.pcapng.out b/tests/cfgs/default/result/custom_rules_same-ip_multiple_ports.pcapng.out
@@ -27,6 +27,6 @@ CustomProtocolC	3	222	1
 
 Acceptable                       8 592           3            
 
-	1	TCP 192.168.1.245:56866 -> 3.3.3.3:443 [proto: 91.411/TLS.CustomProtocolA][IP: 411/CustomProtocolA][Encrypted][Confidence: Match by custom rule][DPI packets: 1][cat: Web/5][3 pkts/222 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][3.05 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
+	1	TCP 192.168.1.245:56866 -> 3.3.3.3:443 [proto: 91.412/TLS.CustomProtocolA][IP: 412/CustomProtocolA][Encrypted][Confidence: Match by custom rule][DPI packets: 1][cat: Web/5][3 pkts/222 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][3.05 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
 	2	TCP 192.168.1.245:58288 -> 3.3.3.3:446 [proto: 800/CustomProtocolC][IP: 800/CustomProtocolC][ClearText][Confidence: Match by custom rule][DPI packets: 1][3 pkts/222 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][3.04 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
-	3	TCP 192.168.1.245:59682 -> 3.3.3.3:444 [proto: 412/CustomProtocolB][IP: 412/CustomProtocolB][ClearText][Confidence: Match by custom rule][DPI packets: 1][2 pkts/148 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][1.02 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
+	3	TCP 192.168.1.245:59682 -> 3.3.3.3:444 [proto: 413/CustomProtocolB][IP: 413/CustomProtocolB][ClearText][Confidence: Match by custom rule][DPI packets: 1][2 pkts/148 bytes -> 0 pkts/0 bytes][Goodput ratio: 0/0][1.02 sec][Risk: ** Unidirectional Traffic **][Risk Score: 10][Risk Info: No server to client traffic][Plen Bins: 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
diff --git a/tests/cfgs/default/result/dhcp-fuzz.pcapng.out b/tests/cfgs/default/result/dhcp-fuzz.pcapng.out
@@ -2,7 +2,7 @@ Guessed flow protos:	1
 
 DPI Packets (UDP):	1	(1.00 pkts/flow)
 Confidence Match by port    : 1 (flows)
-Num dissector calls: 136 (136.00 diss/flow)
+Num dissector calls: 137 (137.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/discord.pcap.out b/tests/cfgs/default/result/discord.pcap.out
@@ -1,7 +1,7 @@
 DPI Packets (TCP):	5	(5.00 pkts/flow)
 DPI Packets (UDP):	60	(1.82 pkts/flow)
 Confidence DPI              : 34 (flows)
-Num dissector calls: 4642 (136.53 diss/flow)
+Num dissector calls: 4669 (137.32 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/discord_mid_flow.pcap.out b/tests/cfgs/default/result/discord_mid_flow.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (UDP):	3	(3.00 pkts/flow)
 Confidence DPI              : 1 (flows)
-Num dissector calls: 167 (167.00 diss/flow)
+Num dissector calls: 168 (168.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/dnscrypt-v1-and-resolver-pings.pcap.out b/tests/cfgs/default/result/dnscrypt-v1-and-resolver-pings.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (UDP):	256	(1.04 pkts/flow)
 Confidence DPI              : 245 (flows)
-Num dissector calls: 20361 (83.11 diss/flow)
+Num dissector calls: 20372 (83.15 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/513/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/dnscrypt-v2.pcap.out b/tests/cfgs/default/result/dnscrypt-v2.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (UDP):	6	(2.00 pkts/flow)
 Confidence DPI              : 3 (flows)
-Num dissector calls: 447 (149.00 diss/flow)
+Num dissector calls: 450 (150.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/dnscrypt_skype_false_positive.pcapng.out b/tests/cfgs/default/result/dnscrypt_skype_false_positive.pcapng.out
@@ -1,6 +1,6 @@
 DPI Packets (UDP):	2	(2.00 pkts/flow)
 Confidence DPI              : 1 (flows)
-Num dissector calls: 149 (149.00 diss/flow)
+Num dissector calls: 150 (150.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/epicgames.pcapng.out b/tests/cfgs/default/result/epicgames.pcapng.out
@@ -1,6 +1,6 @@
 DPI Packets (UDP):	12	(3.00 pkts/flow)
 Confidence DPI              : 4 (flows)
-Num dissector calls: 678 (169.50 diss/flow)
+Num dissector calls: 682 (170.50 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/fuzz-2006-06-26-2594.pcap.out b/tests/cfgs/default/result/fuzz-2006-06-26-2594.pcap.out
@@ -6,7 +6,7 @@ DPI Packets (other):	5	(1.00 pkts/flow)
 Confidence Unknown          : 34 (flows)
 Confidence Match by port    : 27 (flows)
 Confidence DPI              : 190 (flows)
-Num dissector calls: 7385 (29.42 diss/flow)
+Num dissector calls: 7423 (29.57 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/189/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/fuzz-2020-02-16-11740.pcap.out b/tests/cfgs/default/result/fuzz-2020-02-16-11740.pcap.out
@@ -5,7 +5,7 @@ DPI Packets (other):	7	(1.00 pkts/flow)
 Confidence Unknown          : 19 (flows)
 Confidence Match by port    : 3 (flows)
 Confidence DPI              : 55 (flows)
-Num dissector calls: 2237 (29.05 diss/flow)
+Num dissector calls: 2253 (29.26 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/66/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/gnutella.pcap.out b/tests/cfgs/default/result/gnutella.pcap.out
@@ -6,7 +6,7 @@ DPI Packets (other):	10	(1.00 pkts/flow)
 Confidence Unknown          : 389 (flows)
 Confidence Match by port    : 1 (flows)
 Confidence DPI              : 370 (flows)
-Num dissector calls: 49636 (65.31 diss/flow)
+Num dissector calls: 49945 (65.72 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/1170/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/gtp_false_positive.pcapng.out b/tests/cfgs/default/result/gtp_false_positive.pcapng.out
@@ -3,7 +3,7 @@ Guessed flow protos:	2
 DPI Packets (UDP):	7	(2.33 pkts/flow)
 Confidence Unknown          : 1 (flows)
 Confidence Match by port    : 2 (flows)
-Num dissector calls: 467 (155.67 diss/flow)
+Num dissector calls: 470 (156.67 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/9/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/h323.pcap.out b/tests/cfgs/default/result/h323.pcap.out
@@ -1,7 +1,7 @@
 DPI Packets (TCP):	1	(1.00 pkts/flow)
 DPI Packets (UDP):	2	(2.00 pkts/flow)
 Confidence DPI              : 2 (flows)
-Num dissector calls: 138 (69.00 diss/flow)
+Num dissector calls: 139 (69.50 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/http_ipv6.pcap.out b/tests/cfgs/default/result/http_ipv6.pcap.out
@@ -4,7 +4,7 @@ DPI Packets (TCP):	77	(5.92 pkts/flow)
 DPI Packets (UDP):	4	(2.00 pkts/flow)
 Confidence Match by port    : 7 (flows)
 Confidence DPI              : 8 (flows)
-Num dissector calls: 169 (11.27 diss/flow)
+Num dissector calls: 170 (11.33 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/21/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/imo.pcap.out b/tests/cfgs/default/result/imo.pcap.out
@@ -1,6 +1,6 @@
 DPI Packets (UDP):	7	(3.50 pkts/flow)
 Confidence DPI              : 2 (flows)
-Num dissector calls: 333 (166.50 diss/flow)
+Num dissector calls: 335 (167.50 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/0/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/instagram.pcap.out b/tests/cfgs/default/result/instagram.pcap.out
@@ -6,7 +6,7 @@ DPI Packets (other):	1	(1.00 pkts/flow)
 Confidence Unknown          : 1 (flows)
 Confidence Match by port    : 7 (flows)
 Confidence DPI              : 30 (flows)
-Num dissector calls: 1398 (36.79 diss/flow)
+Num dissector calls: 1399 (36.82 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/24/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/iphone.pcap.out b/tests/cfgs/default/result/iphone.pcap.out
@@ -5,7 +5,7 @@ DPI Packets (UDP):	55	(1.77 pkts/flow)
 DPI Packets (other):	5	(1.00 pkts/flow)
 Confidence Match by port    : 1 (flows)
 Confidence DPI              : 50 (flows)
-Num dissector calls: 364 (7.14 diss/flow)
+Num dissector calls: 365 (7.16 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)

diff --git a/tests/cfgs/default/result/ipv6_in_gtp.pcap.out b/tests/cfgs/default/result/ipv6_in_gtp.pcap.out
@@ -2,7 +2,7 @@ DPI Packets (UDP):	1	(1.00 pkts/flow)
 DPI Packets (other):	1	(1.00 pkts/flow)
 Confidence Unknown          : 1 (flows)
 Confidence DPI              : 1 (flows)
-Num dissector calls: 133 (66.50 diss/flow)
+Num dissector calls: 134 (67.00 diss/flow)
 LRU cache ookla:      0/0/0 (insert/search/found)
 LRU cache bittorrent: 0/3/0 (insert/search/found)
 LRU cache zoom:       0/0/0 (insert/search/found)