Add files via upload

1 files changed, 1152 insertions, 0 deletions

diff --git a/example/ndpi_util.c b/example/ndpi_util.c
new file mode 100644
index 000000000..97ac16790
--- /dev/null
+++ b/example/ndpi_util.c
@@ -0,0 +1,1152 @@
+/*
+ * ndpi_util.c
+ *
+ * Copyright (C) 2011-18 - ntop.org
+ *
+ * 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/>.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "ndpi_config.h"
+#endif
+
+#include <stdlib.h>
+
+#ifdef WIN32
+#include <winsock2.h> /* winsock.h is included automatically */
+#include <process.h>
+#include <io.h>
+#else
+#include <unistd.h>
+#include <netinet/in.h>
+#endif
+
+#ifndef ETH_P_IP
+#define ETH_P_IP               0x0800 	/* IPv4 */
+#endif
+
+#ifndef ETH_P_IPv6
+#define ETH_P_IPV6	       0x86dd	/* IPv6 */
+#endif
+
+#define SLARP                  0x8035   /* Cisco Slarp */
+#define CISCO_D_PROTO          0x2000	/* Cisco Discovery Protocol */
+
+#define VLAN                   0x8100
+#define MPLS_UNI               0x8847
+#define MPLS_MULTI             0x8848
+#define PPPoE                  0x8864
+#define SNAP                   0xaa
+#define BSTP                   0x42     /* Bridge Spanning Tree Protocol */
+
+/* mask for FCF */
+#define	WIFI_DATA                        0x2    /* 0000 0010 */
+#define FCF_TYPE(fc)     (((fc) >> 2) & 0x3)    /* 0000 0011 = 0x3 */
+#define FCF_SUBTYPE(fc)  (((fc) >> 4) & 0xF)    /* 0000 1111 = 0xF */
+#define FCF_TO_DS(fc)        ((fc) & 0x0100)
+#define FCF_FROM_DS(fc)      ((fc) & 0x0200)
+
+/* mask for Bad FCF presence */
+#define BAD_FCS                         0x50    /* 0101 0000 */
+
+#define GTP_U_V1_PORT                   2152
+#define TZSP_PORT                      37008
+
+#ifndef DLT_LINUX_SLL
+#define DLT_LINUX_SLL  113
+#endif
+
+#include "ndpi_main.h"
+#include "ndpi_util.h"
+
+extern u_int8_t enable_protocol_guess;
+
+/* ***************************************************** */
+
+void ndpi_free_flow_info_half(struct ndpi_flow_info *flow) {
+  if(flow->ndpi_flow) { ndpi_flow_free(flow->ndpi_flow); flow->ndpi_flow = NULL; }
+  if(flow->src_id)    { ndpi_free(flow->src_id); flow->src_id = NULL; }
+  if(flow->dst_id)    { ndpi_free(flow->dst_id); flow->dst_id = NULL; }
+}
+
+/* ***************************************************** */
+
+extern u_int32_t current_ndpi_memory, max_ndpi_memory;
+
+/**
+ * @brief malloc wrapper function
+ */
+static void *malloc_wrapper(size_t size) {
+  current_ndpi_memory += size;
+
+  if(current_ndpi_memory > max_ndpi_memory)
+    max_ndpi_memory = current_ndpi_memory;
+
+  return malloc(size);
+}
+
+/* ***************************************************** */
+
+/**
+ * @brief free wrapper function
+ */
+static void free_wrapper(void *freeable) {
+  free(freeable);
+}
+
+/* ***************************************************** */
+
+static uint16_t ndpi_get_proto_id(struct ndpi_detection_module_struct *ndpi_mod, const char *name) {
+  uint16_t proto_id;
+  char *e;
+  unsigned long p = strtol(name,&e,0);
+  ndpi_proto_defaults_t *proto_defaults = ndpi_get_proto_defaults(ndpi_mod);
+
+  if(e && !*e) {
+    if(p < NDPI_MAX_SUPPORTED_PROTOCOLS+NDPI_MAX_NUM_CUSTOM_PROTOCOLS &&
+       proto_defaults[p].protoName) return (uint16_t)p;
+    return NDPI_PROTOCOL_UNKNOWN;
+  }
+
+  for(proto_id=NDPI_PROTOCOL_UNKNOWN; proto_id < NDPI_MAX_SUPPORTED_PROTOCOLS+NDPI_MAX_NUM_CUSTOM_PROTOCOLS; proto_id++) {
+    if(proto_defaults[proto_id].protoName &&
+       !strcasecmp(proto_defaults[proto_id].protoName,name))
+      return proto_id;
+  }
+  return NDPI_PROTOCOL_UNKNOWN;
+}
+
+/* ***************************************************** */
+
+static NDPI_PROTOCOL_BITMASK debug_bitmask;
+static char _proto_delim[] = " \t,:;";
+static int parse_debug_proto(struct ndpi_detection_module_struct *ndpi_mod, char *str) {
+  char *n;
+  uint16_t proto;
+  char op=1;
+  for(n = strtok(str,_proto_delim); n && *n; n = strtok(NULL,_proto_delim)) {
+    if(*n == '-') {
+      op = 0;
+      n++;
+    } else if(*n == '+') {
+      op = 1;
+      n++;
+    }
+    if(!strcmp(n,"all")) {
+      if(op)
+	NDPI_BITMASK_SET_ALL(debug_bitmask);
+      else
+	NDPI_BITMASK_RESET(debug_bitmask);
+      continue;
+    }
+    proto = ndpi_get_proto_id(ndpi_mod, n);
+    if(proto == NDPI_PROTOCOL_UNKNOWN && strcmp(n,"unknown") && strcmp(n,"0")) {
+      fprintf(stderr,"Invalid protocol %s\n",n);
+      return 1;
+    }
+    if(op)
+      NDPI_BITMASK_ADD(debug_bitmask,proto);
+    else
+      NDPI_BITMASK_DEL(debug_bitmask,proto);
+  }
+  return 0;
+}
+
+/* ***************************************************** */
+
+extern char *_debug_protocols;
+static int _debug_protocols_ok = 0;
+
+struct ndpi_workflow* ndpi_workflow_init(const struct ndpi_workflow_prefs * prefs,
+					 pcap_t * pcap_handle) {
+  set_ndpi_malloc(malloc_wrapper), set_ndpi_free(free_wrapper);
+  set_ndpi_flow_malloc(NULL), set_ndpi_flow_free(NULL);
+  /* TODO: just needed here to init ndpi malloc wrapper */
+  struct ndpi_detection_module_struct * module = ndpi_init_detection_module();
+  if (module == NULL) {
+      NDPI_LOG(0, NULL, NDPI_LOG_ERROR, "global structure initialization failed\n");
+      exit(-1);
+  }
+
+  struct ndpi_workflow * workflow = ndpi_calloc(1, sizeof(struct ndpi_workflow));
+  if (workflow == NULL) {
+      NDPI_LOG(0, NULL, NDPI_LOG_ERROR, "global structure initialization failed\n");
+      ndpi_free(module);
+      exit(-1);
+  }
+  workflow->pcap_handle = pcap_handle;
+  workflow->prefs       = *prefs;
+  workflow->ndpi_struct = module;
+
+  ndpi_set_log_level(module, nDPI_LogLevel);
+
+  if(_debug_protocols != NULL && ! _debug_protocols_ok) {
+    if(parse_debug_proto(module,_debug_protocols))
+      exit(-1);
+    _debug_protocols_ok = 1;
+  }
+
+#ifdef NDPI_ENABLE_DEBUG_MESSAGES
+  NDPI_BITMASK_RESET(module->debug_bitmask);
+  if(_debug_protocols_ok)
+    module->debug_bitmask = debug_bitmask;
+#endif
+
+  workflow->ndpi_flows_root = ndpi_calloc(workflow->prefs.num_roots, sizeof(void *));
+
+  return workflow;
+}
+
+/* ***************************************************** */
+
+void ndpi_flow_info_freer(void *node) {
+  struct ndpi_flow_info *flow = (struct ndpi_flow_info*)node;
+
+  ndpi_free_flow_info_half(flow);
+  ndpi_free(flow);
+}
+
+/* ***************************************************** */
+
+void ndpi_workflow_free(struct ndpi_workflow * workflow) {
+  u_int i;
+
+  for(i=0; i<workflow->prefs.num_roots; i++)
+    ndpi_tdestroy(workflow->ndpi_flows_root[i], ndpi_flow_info_freer);
+
+  ndpi_exit_detection_module(workflow->ndpi_struct);
+  free(workflow->ndpi_flows_root);
+  free(workflow);
+}
+
+/* ***************************************************** */
+
+int ndpi_workflow_node_cmp(const void *a, const void *b) {
+  const struct ndpi_flow_info *fa = (const struct ndpi_flow_info*)a;
+  const struct ndpi_flow_info *fb = (const struct ndpi_flow_info*)b;
+
+  if(fa->hashval < fb->hashval) return(-1); else if(fa->hashval > fb->hashval) return(1);
+
+  /* Flows have the same hash */
+
+  if(fa->vlan_id   < fb->vlan_id   ) return(-1); else { if(fa->vlan_id    > fb->vlan_id   ) return(1); }
+  if(fa->protocol  < fb->protocol  ) return(-1); else { if(fa->protocol   > fb->protocol  ) return(1); }
+
+  if(
+    (
+     (fa->src_ip      == fb->src_ip  )
+     && (fa->src_port == fb->src_port)
+     && (fa->dst_ip   == fb->dst_ip  )
+     && (fa->dst_port == fb->dst_port)
+     )
+    ||
+    (
+     (fa->src_ip      == fb->dst_ip  )
+     && (fa->src_port == fb->dst_port)
+     && (fa->dst_ip   == fb->src_ip  )
+     && (fa->dst_port == fb->src_port)
+     )
+     )
+    return(0);
+
+  if(fa->src_ip   < fb->src_ip  ) return(-1); else { if(fa->src_ip   > fb->src_ip  ) return(1); }
+  if(fa->src_port < fb->src_port) return(-1); else { if(fa->src_port > fb->src_port) return(1); }
+  if(fa->dst_ip   < fb->dst_ip  ) return(-1); else { if(fa->dst_ip   > fb->dst_ip  ) return(1); }
+  if(fa->dst_port < fb->dst_port) return(-1); else { if(fa->dst_port > fb->dst_port) return(1); }
+
+  return(0); /* notreached */
+}
+
+/* ***************************************************** */
+
+static void patchIPv6Address(char *str) {
+  int i = 0, j = 0;
+
+  while(str[i] != '\0') {
+    if((str[i] == ':')
+       && (str[i+1] == '0')
+       && (str[i+2] == ':')) {
+      str[j++] = ':';
+      str[j++] = ':';
+      i += 3;
+    } else
+      str[j++] = str[i++];
+  }
+  if(str[j] != '\0') str[j] = '\0';
+}
+
+/* ***************************************************** */
+
+static struct ndpi_flow_info *get_ndpi_flow_info(struct ndpi_workflow * workflow,
+						 const u_int8_t version,
+						 u_int16_t vlan_id,
+						 const struct ndpi_iphdr *iph,
+						 const struct ndpi_ipv6hdr *iph6,
+						 u_int16_t ip_offset,
+						 u_int16_t ipsize,
+						 u_int16_t l4_packet_len,
+						 struct ndpi_tcphdr **tcph,
+						 struct ndpi_udphdr **udph,
+						 u_int16_t *sport, u_int16_t *dport,
+						 struct ndpi_id_struct **src,
+						 struct ndpi_id_struct **dst,
+						 u_int8_t *proto,
+						 u_int8_t **payload,
+						 u_int16_t *payload_len,
+						 u_int8_t *src_to_dst_direction) {
+  u_int32_t idx, l4_offset, hashval;
+  struct ndpi_flow_info flow;
+  void *ret;
+  const u_int8_t *l3, *l4;
+
+  /*
+    Note: to keep things simple (ndpiReader is just a demo app)
+    we handle IPv6 a-la-IPv4.
+  */
+  if(version == IPVERSION) {
+    if(ipsize < 20)
+      return NULL;
+
+    if((iph->ihl * 4) > ipsize || ipsize < ntohs(iph->tot_len)
+       /* || (iph->frag_off & htons(0x1FFF)) != 0 */)
+      return NULL;
+
+    l4_offset = iph->ihl * 4;
+    l3 = (const u_int8_t*)iph;
+  } else {
+    l4_offset = sizeof(struct ndpi_ipv6hdr);
+    l3 = (const u_int8_t*)iph6;
+  }
+
+  if(l4_packet_len < 64)
+    workflow->stats.packet_len[0]++;
+  else if(l4_packet_len >= 64 && l4_packet_len < 128)
+    workflow->stats.packet_len[1]++;
+  else if(l4_packet_len >= 128 && l4_packet_len < 256)
+    workflow->stats.packet_len[2]++;
+  else if(l4_packet_len >= 256 && l4_packet_len < 1024)
+    workflow->stats.packet_len[3]++;
+  else if(l4_packet_len >= 1024 && l4_packet_len < 1500)
+    workflow->stats.packet_len[4]++;
+  else if(l4_packet_len >= 1500)
+    workflow->stats.packet_len[5]++;
+
+  if(l4_packet_len > workflow->stats.max_packet_len)
+    workflow->stats.max_packet_len = l4_packet_len;
+
+  *proto = iph->protocol;
+  l4 = ((const u_int8_t *) l3 + l4_offset);
+
+  if(iph->protocol == IPPROTO_TCP && l4_packet_len >= 20) {
+    u_int tcp_len;
+
+    // tcp
+    workflow->stats.tcp_count++;
+    *tcph = (struct ndpi_tcphdr *)l4;
+    *sport = ntohs((*tcph)->source), *dport = ntohs((*tcph)->dest);
+    tcp_len = ndpi_min(4*(*tcph)->doff, l4_packet_len);
+    *payload = (u_int8_t*)&l4[tcp_len];
+    *payload_len = ndpi_max(0, l4_packet_len-4*(*tcph)->doff);
+  } else if(iph->protocol == IPPROTO_UDP && l4_packet_len >= 8) {
+    // udp
+
+    workflow->stats.udp_count++;
+    *udph = (struct ndpi_udphdr *)l4;
+    *sport = ntohs((*udph)->source), *dport = ntohs((*udph)->dest);
+    *payload = (u_int8_t*)&l4[sizeof(struct ndpi_udphdr)];
+    *payload_len = (l4_packet_len > sizeof(struct ndpi_udphdr)) ? l4_packet_len-sizeof(struct ndpi_udphdr) : 0;
+  } else {
+    // non tcp/udp protocols
+    *sport = *dport = 0;
+  }
+
+  flow.protocol = iph->protocol, flow.vlan_id = vlan_id;
+  flow.src_ip = iph->saddr, flow.dst_ip = iph->daddr;
+  flow.src_port = htons(*sport), flow.dst_port = htons(*dport);
+  flow.hashval = hashval = flow.protocol + flow.vlan_id + flow.src_ip + flow.dst_ip + flow.src_port + flow.dst_port;
+  /* printf("hashval=%u [%u][%u][%u:%u][%u:%u]\n", hashval, flow.protocol, flow.vlan_id, flow.src_ip, flow.src_port, flow.dst_ip, flow.dst_port); */
+  idx = hashval % workflow->prefs.num_roots;
+  ret = ndpi_tfind(&flow, &workflow->ndpi_flows_root[idx], ndpi_workflow_node_cmp);
+
+  /* to avoid two nodes in one binary tree for a flow */
+  int is_changed = 0;
+  if(ret == NULL) {
+    u_int32_t orig_src_ip = flow.src_ip;
+    u_int16_t orig_src_port = flow.src_port;
+    u_int32_t orig_dst_ip = flow.dst_ip;
+    u_int16_t orig_dst_port = flow.dst_port;
+
+    flow.src_ip = orig_dst_ip;
+    flow.src_port = orig_dst_port;
+    flow.dst_ip = orig_src_ip;
+    flow.dst_port = orig_src_port;
+
+    is_changed = 1;
+
+    ret = ndpi_tfind(&flow, &workflow->ndpi_flows_root[idx], ndpi_workflow_node_cmp);
+  }
+
+  if(ret == NULL) {
+    if(workflow->stats.ndpi_flow_count == workflow->prefs.max_ndpi_flows) {
+      NDPI_LOG(0, workflow->ndpi_struct, NDPI_LOG_ERROR,
+	       "maximum flow count (%u) has been exceeded\n",
+	       workflow->prefs.max_ndpi_flows);
+      exit(-1);
+    } else {
+      struct ndpi_flow_info *newflow = (struct ndpi_flow_info*)malloc(sizeof(struct ndpi_flow_info));
+
+      if(newflow == NULL) {
+	NDPI_LOG(0, workflow->ndpi_struct, NDPI_LOG_ERROR, "[NDPI] %s(1): not enough memory\n", __FUNCTION__);
+	return(NULL);
+      } else
+        workflow->num_allocated_flows++;
+
+      memset(newflow, 0, sizeof(struct ndpi_flow_info));
+      newflow->hashval = hashval;
+      newflow->protocol = iph->protocol, newflow->vlan_id = vlan_id;
+      newflow->src_ip = iph->saddr, newflow->dst_ip = iph->daddr;
+      newflow->src_port = htons(*sport), newflow->dst_port = htons(*dport);
+      newflow->ip_version = version;
+
+      if(version == IPVERSION) {
+	inet_ntop(AF_INET, &newflow->src_ip, newflow->src_name, sizeof(newflow->src_name));
+	inet_ntop(AF_INET, &newflow->dst_ip, newflow->dst_name, sizeof(newflow->dst_name));
+      } else {
+	inet_ntop(AF_INET6, &iph6->ip6_src, newflow->src_name, sizeof(newflow->src_name));
+	inet_ntop(AF_INET6, &iph6->ip6_dst, newflow->dst_name, sizeof(newflow->dst_name));
+	/* For consistency across platforms replace :0: with :: */
+	patchIPv6Address(newflow->src_name), patchIPv6Address(newflow->dst_name);
+      }
+
+      if((newflow->ndpi_flow = ndpi_flow_malloc(SIZEOF_FLOW_STRUCT)) == NULL) {
+	NDPI_LOG(0, workflow->ndpi_struct, NDPI_LOG_ERROR, "[NDPI] %s(2): not enough memory\n", __FUNCTION__);
+	free(newflow);
+	return(NULL);
+      } else
+	memset(newflow->ndpi_flow, 0, SIZEOF_FLOW_STRUCT);
+
+      if((newflow->src_id = ndpi_malloc(SIZEOF_ID_STRUCT)) == NULL) {
+	NDPI_LOG(0, workflow->ndpi_struct, NDPI_LOG_ERROR, "[NDPI] %s(3): not enough memory\n", __FUNCTION__);
+	free(newflow);
+	return(NULL);
+      } else
+	memset(newflow->src_id, 0, SIZEOF_ID_STRUCT);
+
+      if((newflow->dst_id = ndpi_malloc(SIZEOF_ID_STRUCT)) == NULL) {
+	NDPI_LOG(0, workflow->ndpi_struct, NDPI_LOG_ERROR, "[NDPI] %s(4): not enough memory\n", __FUNCTION__);
+	free(newflow);
+	return(NULL);
+      } else
+	memset(newflow->dst_id, 0, SIZEOF_ID_STRUCT);
+
+      ndpi_tsearch(newflow, &workflow->ndpi_flows_root[idx], ndpi_workflow_node_cmp); /* Add */
+      workflow->stats.ndpi_flow_count++;
+
+      *src = newflow->src_id, *dst = newflow->dst_id;
+
+      if(workflow->hrs == 1){
+       /* count if no SSL protocol */
+        if((newflow->detected_protocol.app_protocol != NDPI_PROTOCOL_SSL)
+            && (newflow->detected_protocol.master_protocol != NDPI_PROTOCOL_SSL)){
+                newflow->n_pckt_human_readable_string++;
+        }
+      }
+
+      return newflow;
+    }
+  } else {
+    struct ndpi_flow_info *flow = *(struct ndpi_flow_info**)ret;
+
+    if(workflow->hrs == 1){
+    /* count if no SSL protocol */
+        if((flow->detected_protocol.app_protocol != NDPI_PROTOCOL_SSL)
+            && (flow->detected_protocol.master_protocol != NDPI_PROTOCOL_SSL)){
+                flow->n_pckt_human_readable_string++;
+        }
+
+    }
+    if((flow->detected_protocol.app_protocol == NDPI_PROTOCOL_SSL)
+            || (flow->detected_protocol.master_protocol == NDPI_PROTOCOL_SSL)){
+                flow->n_pckt_human_readable_string = 0;
+    }
+
+    if(is_changed) {
+      if(flow->src_ip == iph->saddr
+	 && flow->dst_ip == iph->daddr
+	 && flow->src_port == htons(*sport)
+	 && flow->dst_port == htons(*dport)
+	)
+	*src = flow->dst_id, *dst = flow->src_id, *src_to_dst_direction = 0, flow->bidirectional = 1;
+      else
+	*src = flow->src_id, *dst = flow->dst_id, *src_to_dst_direction = 1;
+    }
+    else {
+      if(flow->src_ip == iph->saddr
+	 && flow->dst_ip == iph->daddr
+	 && flow->src_port == htons(*sport)
+	 && flow->dst_port == htons(*dport)
+	)
+	*src = flow->src_id, *dst = flow->dst_id, *src_to_dst_direction = 1;
+      else
+	*src = flow->dst_id, *dst = flow->src_id, *src_to_dst_direction = 0, flow->bidirectional = 1;
+    }
+    return flow;
+  }
+}
+
+/* ****************************************************** */
+
+static struct ndpi_flow_info *get_ndpi_flow_info6(struct ndpi_workflow * workflow,
+						  u_int16_t vlan_id,
+						  const struct ndpi_ipv6hdr *iph6,
+						  u_int16_t ip_offset,
+						  struct ndpi_tcphdr **tcph,
+						  struct ndpi_udphdr **udph,
+						  u_int16_t *sport, u_int16_t *dport,
+						  struct ndpi_id_struct **src,
+						  struct ndpi_id_struct **dst,
+						  u_int8_t *proto,
+						  u_int8_t **payload,
+						  u_int16_t *payload_len,
+						  u_int8_t *src_to_dst_direction) {
+  struct ndpi_iphdr iph;
+
+  memset(&iph, 0, sizeof(iph));
+  iph.version = IPVERSION;
+  iph.saddr = iph6->ip6_src.u6_addr.u6_addr32[2] + iph6->ip6_src.u6_addr.u6_addr32[3];
+  iph.daddr = iph6->ip6_dst.u6_addr.u6_addr32[2] + iph6->ip6_dst.u6_addr.u6_addr32[3];
+  iph.protocol = iph6->ip6_hdr.ip6_un1_nxt;
+
+  if(iph.protocol == IPPROTO_DSTOPTS /* IPv6 destination option */) {
+    const u_int8_t *options = (const u_int8_t*)iph6 + sizeof(const struct ndpi_ipv6hdr);
+
+    iph.protocol = options[0];
+  }
+
+  return(get_ndpi_flow_info(workflow, 6, vlan_id, &iph, iph6, ip_offset,
+			    sizeof(struct ndpi_ipv6hdr),
+			    ntohs(iph6->ip6_hdr.ip6_un1_plen),
+			    tcph, udph, sport, dport,
+			    src, dst, proto, payload,
+			    payload_len, src_to_dst_direction));
+}
+
+/* ****************************************************** */
+
+void process_ndpi_collected_info(struct ndpi_workflow * workflow, struct ndpi_flow_info *flow) {
+  if(!flow->ndpi_flow) return;
+
+  snprintf(flow->host_server_name, sizeof(flow->host_server_name), "%s",
+	   flow->ndpi_flow->host_server_name);
+
+  if(flow->detected_protocol.app_protocol == NDPI_PROTOCOL_DHCP) {
+    snprintf(flow->dhcp_fingerprint, sizeof(flow->dhcp_fingerprint), "%s", flow->ndpi_flow->protos.dhcp.fingerprint);
+  } else if(flow->detected_protocol.app_protocol == NDPI_PROTOCOL_BITTORRENT) {
+    u_int i, j, n = 0;
+
+    for(i=0, j = 0; j < sizeof(flow->bittorent_hash)-1; i++) {
+      sprintf(&flow->bittorent_hash[j], "%02x",
+	      flow->ndpi_flow->protos.bittorrent.hash[i]);
+
+      j += 2, n += flow->ndpi_flow->protos.bittorrent.hash[i];
+    }
+
+    if(n == 0) flow->bittorent_hash[0] = '\0';
+  }
+  /* MDNS */
+  else if(flow->detected_protocol.app_protocol == NDPI_PROTOCOL_MDNS) {
+    snprintf(flow->info, sizeof(flow->info), "%s", flow->ndpi_flow->protos.mdns.answer);
+  }
+  /* UBNTAC2 */
+  else if(flow->detected_protocol.app_protocol == NDPI_PROTOCOL_UBNTAC2) {
+    snprintf(flow->info, sizeof(flow->info), "%s", flow->ndpi_flow->protos.ubntac2.version);
+  }
+  if(flow->detected_protocol.app_protocol != NDPI_PROTOCOL_DNS) {
+    /* SSH */
+    if(flow->detected_protocol.app_protocol == NDPI_PROTOCOL_SSH) {
+      snprintf(flow->ssh_ssl.client_info, sizeof(flow->ssh_ssl.client_info), "%s",
+	       flow->ndpi_flow->protos.ssh.client_signature);
+      snprintf(flow->ssh_ssl.server_info, sizeof(flow->ssh_ssl.server_info), "%s",
+	       flow->ndpi_flow->protos.ssh.server_signature);
+    }
+    /* SSL */
+    else if((flow->detected_protocol.app_protocol == NDPI_PROTOCOL_SSL)
+	    || (flow->detected_protocol.master_protocol == NDPI_PROTOCOL_SSL)) {
+      flow->ssh_ssl.ssl_version = flow->ndpi_flow->protos.stun_ssl.ssl.ssl_version;
+      snprintf(flow->ssh_ssl.client_info, sizeof(flow->ssh_ssl.client_info), "%s",
+	       flow->ndpi_flow->protos.stun_ssl.ssl.client_certificate);
+      snprintf(flow->ssh_ssl.server_info, sizeof(flow->ssh_ssl.server_info), "%s",
+	       flow->ndpi_flow->protos.stun_ssl.ssl.server_certificate);
+      snprintf(flow->ssh_ssl.server_organization, sizeof(flow->ssh_ssl.server_organization), "%s",
+	       flow->ndpi_flow->protos.stun_ssl.ssl.server_organization);
+      snprintf(flow->ssh_ssl.ja3_client, sizeof(flow->ssh_ssl.ja3_client), "%s",
+	       flow->ndpi_flow->protos.stun_ssl.ssl.ja3_client);
+      snprintf(flow->ssh_ssl.ja3_server, sizeof(flow->ssh_ssl.ja3_server), "%s",
+	       flow->ndpi_flow->protos.stun_ssl.ssl.ja3_server);
+      flow->ssh_ssl.server_unsafe_cipher = flow->ndpi_flow->protos.stun_ssl.ssl.server_unsafe_cipher;
+      flow->ssh_ssl.server_cipher = flow->ndpi_flow->protos.stun_ssl.ssl.server_cipher;
+    }
+  }
+
+  if(flow->detection_completed && (!flow->check_extra_packets)) {
+    if(flow->detected_protocol.app_protocol == NDPI_PROTOCOL_UNKNOWN) {
+      if(workflow->__flow_giveup_callback != NULL)
+	workflow->__flow_giveup_callback(workflow, flow, workflow->__flow_giveup_udata);
+    } else {
+      if(workflow->__flow_detected_callback != NULL)
+	workflow->__flow_detected_callback(workflow, flow, workflow->__flow_detected_udata);
+    }
+
+    ndpi_free_flow_info_half(flow);
+  }
+}
+
+/* ****************************************************** */
+
+/**
+   Function to process the packet:
+   determine the flow of a packet and try to decode it
+   @return: 0 if success; else != 0
+
+   @Note: ipsize = header->len - ip_offset ; rawsize = header->len
+*/
+static struct ndpi_proto packet_processing(struct ndpi_workflow * workflow,
+					   const u_int64_t time,
+					   u_int16_t vlan_id,
+					   const struct ndpi_iphdr *iph,
+					   struct ndpi_ipv6hdr *iph6,
+					   u_int16_t ip_offset,
+					   u_int16_t ipsize, u_int16_t rawsize) {
+  struct ndpi_id_struct *src, *dst;
+  struct ndpi_flow_info *flow = NULL;
+  struct ndpi_flow_struct *ndpi_flow = NULL;
+  u_int8_t proto;
+  struct ndpi_tcphdr *tcph = NULL;
+  struct ndpi_udphdr *udph = NULL;
+  u_int16_t sport, dport, payload_len;
+  u_int8_t *payload;
+  u_int8_t src_to_dst_direction = 1;
+  struct ndpi_proto nproto = { NDPI_PROTOCOL_UNKNOWN, NDPI_PROTOCOL_UNKNOWN };
+
+  if(iph)
+    flow = get_ndpi_flow_info(workflow, IPVERSION, vlan_id, iph, NULL,
+			      ip_offset, ipsize,
+			      ntohs(iph->tot_len) - (iph->ihl * 4),
+			      &tcph, &udph, &sport, &dport,
+			      &src, &dst, &proto,
+			      &payload, &payload_len, &src_to_dst_direction);
+  else
+    flow = get_ndpi_flow_info6(workflow, vlan_id, iph6, ip_offset,
+			       &tcph, &udph, &sport, &dport,
+			       &src, &dst, &proto,
+			       &payload, &payload_len, &src_to_dst_direction);
+
+  if(flow != NULL) {
+    workflow->stats.ip_packet_count++;
+    workflow->stats.total_wire_bytes += rawsize + 24 /* CRC etc */,
+      workflow->stats.total_ip_bytes += rawsize;
+    ndpi_flow = flow->ndpi_flow;
+
+    if(src_to_dst_direction)
+      flow->src2dst_packets++, flow->src2dst_bytes += rawsize;
+    else
+      flow->dst2src_packets++, flow->dst2src_bytes += rawsize;
+
+    flow->last_seen = time;
+  } else { // flow is NULL
+    workflow->stats.total_discarded_bytes++;
+    return(nproto);
+  }
+
+  if(!flow->detection_completed) {
+    u_int enough_packets =
+      (((proto == IPPROTO_UDP) && ((flow->src2dst_packets + flow->dst2src_packets) > 8))
+       || ((proto == IPPROTO_TCP) && ((flow->src2dst_packets + flow->dst2src_packets) > 10))) ? 1 : 0;
+
+    flow->detected_protocol = ndpi_detection_process_packet(workflow->ndpi_struct, ndpi_flow,
+							    iph ? (uint8_t *)iph : (uint8_t *)iph6,
+							    ipsize, time, src, dst);
+
+    if(enough_packets || (flow->detected_protocol.app_protocol != NDPI_PROTOCOL_UNKNOWN)) {
+      if((!enough_packets)
+	 && (flow->detected_protocol.master_protocol == NDPI_PROTOCOL_SSL)
+	 && (flow->ndpi_flow->protos.stun_ssl.ssl.ja3_server[0] == '\0'))
+	; /* Wait for JA3S certificate */
+      else {
+	/* New protocol detected or give up */
+	flow->detection_completed = 1;
+
+	/* Check if we should keep checking extra packets */
+	if(ndpi_flow && ndpi_flow->check_extra_packets)
+	  flow->check_extra_packets = 1;
+
+	if(flow->detected_protocol.app_protocol == NDPI_PROTOCOL_UNKNOWN)
+	  flow->detected_protocol = ndpi_detection_giveup(workflow->ndpi_struct, flow->ndpi_flow,
+							  enable_protocol_guess);
+
+	process_ndpi_collected_info(workflow, flow);
+      }
+    }
+  }
+
+  return(flow->detected_protocol);
+}
+
+/* ****************************************************** */
+
+struct ndpi_proto ndpi_workflow_process_packet(struct ndpi_workflow * workflow,
+					       const struct pcap_pkthdr *header,
+					       const u_char *packet) {
+  /*
+   * Declare pointers to packet headers
+   */
+  /* --- Ethernet header --- */
+  const struct ndpi_ethhdr *ethernet;
+  /* --- LLC header --- */
+  const struct ndpi_llc_header_snap *llc;
+
+  /* --- Cisco HDLC header --- */
+  const struct ndpi_chdlc *chdlc;
+
+  /* --- Radio Tap header --- */
+  const struct ndpi_radiotap_header *radiotap;
+  /* --- Wifi header --- */
+  const struct ndpi_wifi_header *wifi;
+
+  /* --- MPLS header --- */
+  union mpls {
+    uint32_t u32;
+    struct ndpi_mpls_header mpls;
+  } mpls;
+
+  /** --- IP header --- **/
+  struct ndpi_iphdr *iph;
+  /** --- IPv6 header --- **/
+  struct ndpi_ipv6hdr *iph6;
+
+  struct ndpi_proto nproto = { NDPI_PROTOCOL_UNKNOWN, NDPI_PROTOCOL_UNKNOWN };
+
+  /* lengths and offsets */
+  u_int16_t eth_offset = 0;
+  u_int16_t radio_len;
+  u_int16_t fc;
+  u_int16_t type = 0;
+  int wifi_len = 0;
+  int pyld_eth_len = 0;
+  int check;
+  u_int64_t time;
+  u_int16_t ip_offset = 0, ip_len;
+  u_int16_t frag_off = 0, vlan_id = 0;
+  u_int8_t proto = 0;
+  /*u_int32_t label;*/
+
+  /* counters */
+  u_int8_t vlan_packet = 0;
+
+  /* Increment raw packet counter */
+  workflow->stats.raw_packet_count++;
+
+  /* setting time */
+  time = ((uint64_t) header->ts.tv_sec) * TICK_RESOLUTION + header->ts.tv_usec / (1000000 / TICK_RESOLUTION);
+
+  /* safety check */
+  if(workflow->last_time > time) {
+    /* printf("\nWARNING: timestamp bug in the pcap file (ts delta: %llu, repairing)\n", ndpi_thread_info[thread_id].last_time - time); */
+    time = workflow->last_time;
+  }
+  /* update last time value */
+  workflow->last_time = time;
+
+  /*** check Data Link type ***/
+  int datalink_type;
+
+#ifdef USE_DPDK
+  datalink_type = DLT_EN10MB;
+#else
+  datalink_type = (int)pcap_datalink(workflow->pcap_handle);
+#endif
+
+datalink_check:
+  switch(datalink_type) {
+  case DLT_NULL:
+    if(ntohl(*((u_int32_t*)&packet[eth_offset])) == 2)
+      type = ETH_P_IP;
+    else
+      type = ETH_P_IPV6;
+
+    ip_offset = 4 + eth_offset;
+    break;
+
+    /* Cisco PPP in HDLC-like framing - 50 */
+  case DLT_PPP_SERIAL:
+    chdlc = (struct ndpi_chdlc *) &packet[eth_offset];
+    ip_offset = sizeof(struct ndpi_chdlc); /* CHDLC_OFF = 4 */
+    type = ntohs(chdlc->proto_code);
+    break;
+
+    /* Cisco PPP - 9 or 104 */
+  case DLT_C_HDLC:
+  case DLT_PPP:
+    chdlc = (struct ndpi_chdlc *) &packet[eth_offset];
+    ip_offset = sizeof(struct ndpi_chdlc); /* CHDLC_OFF = 4 */
+    type = ntohs(chdlc->proto_code);
+    break;
+
+    /* IEEE 802.3 Ethernet - 1 */
+  case DLT_EN10MB:
+    ethernet = (struct ndpi_ethhdr *) &packet[eth_offset];
+    ip_offset = sizeof(struct ndpi_ethhdr) + eth_offset;
+    check = ntohs(ethernet->h_proto);
+
+    if(check <= 1500)
+      pyld_eth_len = check;
+    else if(check >= 1536)
+      type = check;
+
+    if(pyld_eth_len != 0) {
+      llc = (struct ndpi_llc_header_snap *)(&packet[ip_offset]);
+      /* check for LLC layer with SNAP extension */
+      if(llc->dsap == SNAP || llc->ssap == SNAP) {
+	type = llc->snap.proto_ID;
+	ip_offset += + 8;
+      }
+      /* No SNAP extension - Spanning Tree pkt must be discarted */
+      else if(llc->dsap == BSTP || llc->ssap == BSTP) {
+	goto v4_warning;
+      }
+    }
+    break;
+
+    /* Linux Cooked Capture - 113 */
+  case DLT_LINUX_SLL:
+    type = (packet[eth_offset+14] << 8) + packet[eth_offset+15];
+    ip_offset = 16 + eth_offset;
+    break;
+
+    /* Radiotap link-layer - 127 */
+  case DLT_IEEE802_11_RADIO:
+    radiotap = (struct ndpi_radiotap_header *) &packet[eth_offset];
+    radio_len = radiotap->len;
+
+    /* Check Bad FCS presence */
+    if((radiotap->flags & BAD_FCS) == BAD_FCS) {
+      workflow->stats.total_discarded_bytes +=  header->len;
+      return(nproto);
+    }
+
+    /* Calculate 802.11 header length (variable) */
+    wifi = (struct ndpi_wifi_header*)( packet + eth_offset + radio_len);
+    fc = wifi->fc;
+
+    /* check wifi data presence */
+    if(FCF_TYPE(fc) == WIFI_DATA) {
+      if((FCF_TO_DS(fc) && FCF_FROM_DS(fc) == 0x0) ||
+	 (FCF_TO_DS(fc) == 0x0 && FCF_FROM_DS(fc)))
+	wifi_len = 26; /* + 4 byte fcs */
+    } else   /* no data frames */
+      break;
+
+    /* Check ether_type from LLC */
+    llc = (struct ndpi_llc_header_snap*)(packet + eth_offset + wifi_len + radio_len);
+    if(llc->dsap == SNAP)
+      type = ntohs(llc->snap.proto_ID);
+
+    /* Set IP header offset */
+    ip_offset = wifi_len + radio_len + sizeof(struct ndpi_llc_header_snap) + eth_offset;
+    break;
+
+  case DLT_RAW:
+    ip_offset = eth_offset = 0;
+    break;
+
+  default:
+    /* printf("Unknown datalink %d\n", datalink_type); */
+    return(nproto);
+  }
+
+  /* check ether type */
+  switch(type) {
+  case VLAN:
+    vlan_id = ((packet[ip_offset] << 8) + packet[ip_offset+1]) & 0xFFF;
+    type = (packet[ip_offset+2] << 8) + packet[ip_offset+3];
+    ip_offset += 4;
+    vlan_packet = 1;
+    // double tagging for 802.1Q
+    if(type == 0x8100) {
+      vlan_id = ((packet[ip_offset] << 8) + packet[ip_offset+1]) & 0xFFF;
+      type = (packet[ip_offset+2] << 8) + packet[ip_offset+3];
+      ip_offset += 4;
+    }
+    break;
+  case MPLS_UNI:
+  case MPLS_MULTI:
+    mpls.u32 = *((uint32_t *) &packet[ip_offset]);
+    mpls.u32 = ntohl(mpls.u32);
+    workflow->stats.mpls_count++;
+    type = ETH_P_IP, ip_offset += 4;
+
+    while(!mpls.mpls.s) {
+      mpls.u32 = *((uint32_t *) &packet[ip_offset]);
+      mpls.u32 = ntohl(mpls.u32);
+      ip_offset += 4;
+    }
+    break;
+  case PPPoE:
+    workflow->stats.pppoe_count++;
+    type = ETH_P_IP;
+    ip_offset += 8;
+    break;
+  default:
+    break;
+  }
+
+  workflow->stats.vlan_count += vlan_packet;
+
+iph_check:
+  /* Check and set IP header size and total packet length */
+  iph = (struct ndpi_iphdr *) &packet[ip_offset];
+
+  /* just work on Ethernet packets that contain IP */
+  if(type == ETH_P_IP && header->caplen >= ip_offset) {
+    frag_off = ntohs(iph->frag_off);
+
+    proto = iph->protocol;
+    if(header->caplen < header->len) {
+      static u_int8_t cap_warning_used = 0;
+
+      if(cap_warning_used == 0) {
+	if(!workflow->prefs.quiet_mode)
+	  NDPI_LOG(0, workflow->ndpi_struct, NDPI_LOG_DEBUG, "\n\nWARNING: packet capture size is smaller than packet size, DETECTION MIGHT NOT WORK CORRECTLY\n\n");
+	cap_warning_used = 1;
+      }
+    }
+  }
+
+  if(iph->version == IPVERSION) {
+    ip_len = ((u_int16_t)iph->ihl * 4);
+    iph6 = NULL;
+
+    if(iph->protocol == IPPROTO_IPV6) {
+      ip_offset += ip_len;
+      goto iph_check;
+    }
+
+    if((frag_off & 0x1FFF) != 0) {
+      static u_int8_t ipv4_frags_warning_used = 0;
+      workflow->stats.fragmented_count++;
+
+      if(ipv4_frags_warning_used == 0) {
+	if(!workflow->prefs.quiet_mode)
+	  NDPI_LOG(0, workflow->ndpi_struct, NDPI_LOG_DEBUG, "\n\nWARNING: IPv4 fragments are not handled by this demo (nDPI supports them)\n");
+	ipv4_frags_warning_used = 1;
+      }
+
+      workflow->stats.total_discarded_bytes +=  header->len;
+      return(nproto);
+    }
+  } else if(iph->version == 6) {
+    iph6 = (struct ndpi_ipv6hdr *)&packet[ip_offset];
+    proto = iph6->ip6_hdr.ip6_un1_nxt;
+    ip_len = sizeof(struct ndpi_ipv6hdr);
+
+    if(proto == IPPROTO_DSTOPTS /* IPv6 destination option */) {
+
+      u_int8_t *options = (u_int8_t*)&packet[ip_offset+ip_len];
+      proto = options[0];
+      ip_len += 8 * (options[1] + 1);
+    }
+    iph = NULL;
+
+  } else {
+    static u_int8_t ipv4_warning_used = 0;
+
+  v4_warning:
+    if(ipv4_warning_used == 0) {
+      if(!workflow->prefs.quiet_mode)
+        NDPI_LOG(0, workflow->ndpi_struct, NDPI_LOG_DEBUG, "\n\nWARNING: only IPv4/IPv6 packets are supported in this demo (nDPI supports both IPv4 and IPv6), all other packets will be discarded\n\n");
+      ipv4_warning_used = 1;
+    }
+    workflow->stats.total_discarded_bytes +=  header->len;
+    return(nproto);
+  }
+
+  if(workflow->prefs.decode_tunnels && (proto == IPPROTO_UDP)) {
+    struct ndpi_udphdr *udp = (struct ndpi_udphdr *)&packet[ip_offset+ip_len];
+    u_int16_t sport = ntohs(udp->source), dport = ntohs(udp->dest);
+
+    if((sport == GTP_U_V1_PORT) || (dport == GTP_U_V1_PORT)) {
+      /* Check if it's GTPv1 */
+      u_int offset = ip_offset+ip_len+sizeof(struct ndpi_udphdr);
+      u_int8_t flags = packet[offset];
+      u_int8_t message_type = packet[offset+1];
+
+      if((((flags & 0xE0) >> 5) == 1 /* GTPv1 */) &&
+	 (message_type == 0xFF /* T-PDU */)) {
+
+	ip_offset = ip_offset+ip_len+sizeof(struct ndpi_udphdr)+8; /* GTPv1 header len */
+	if(flags & 0x04) ip_offset += 1; /* next_ext_header is present */
+	if(flags & 0x02) ip_offset += 4; /* sequence_number is present (it also includes next_ext_header and pdu_number) */
+	if(flags & 0x01) ip_offset += 1; /* pdu_number is present */
+
+	iph = (struct ndpi_iphdr *) &packet[ip_offset];
+
+	if(iph->version != IPVERSION) {
+	  // printf("WARNING: not good (packet_id=%u)!\n", (unsigned int)workflow->stats.raw_packet_count);
+	  goto v4_warning;
+	}
+      }
+    } else if((sport == TZSP_PORT) || (dport == TZSP_PORT)) {
+      /* https://en.wikipedia.org/wiki/TZSP */
+      u_int offset = ip_offset+ip_len+sizeof(struct ndpi_udphdr);
+      u_int8_t version = packet[offset];
+      u_int8_t type    = packet[offset+1];
+      u_int16_t encapsulates = ntohs(*((u_int16_t*)&packet[offset+2]));
+
+      if((version == 1) && (type == 0) && (encapsulates == 1)) {
+	u_int8_t stop = 0;
+
+	offset += 4;
+
+	while((!stop) && (offset < header->caplen)) {
+	  u_int8_t tag_type = packet[offset];
+	  u_int8_t tag_len;
+
+	  switch(tag_type) {
+	  case 0: /* PADDING Tag */
+	    tag_len = 1;
+	    break;
+	  case 1: /* END Tag */
+	    tag_len = 1, stop = 1;
+	    break;
+	  default:
+	    tag_len = packet[offset+1];
+	    break;
+	  }
+
+	  offset += tag_len;
+
+	  if(offset >= header->caplen)
+	    return(nproto); /* Invalid packet */
+	  else {
+	    eth_offset = offset;
+	    goto datalink_check;
+	  }
+	}
+      }
+    }
+  }
+
+  /* process the packet */
+  return(packet_processing(workflow, time, vlan_id, iph, iph6,
+			   ip_offset, header->caplen - ip_offset, header->caplen));
+}
+
+/* ********************************************************** */
+/*       http://home.thep.lu.se/~bjorn/crc/crc32_fast.c       */
+/* ********************************************************** */
+
+static uint32_t crc32_for_byte(uint32_t r) {
+  int j;
+  for(j = 0; j < 8; ++j)
+    r = ((r & 1) ? 0 : (uint32_t)0xEDB88320L) ^ r >> 1;
+  return r ^ (uint32_t)0xFF000000L;
+}
+
+/* Any unsigned integer type with at least 32 bits may be used as
+ * accumulator type for fast crc32-calulation, but unsigned long is
+ * probably the optimal choice for most systems. */
+typedef unsigned long accum_t;
+
+static void init_tables(uint32_t* table, uint32_t* wtable) {
+  size_t i, j, k, w;
+  for(i = 0; i < 0x100; ++i)
+    table[i] = crc32_for_byte(i);
+  for(k = 0; k < sizeof(accum_t); ++k)
+    for(i = 0; i < 0x100; ++i) {
+      for(j = w = 0; j < sizeof(accum_t); ++j)
+	w = table[(uint8_t)(j == k? w ^ i: w)] ^ w >> 8;
+      wtable[(k << 8) + i] = w ^ (k? wtable[0]: 0);
+    }
+}
+
+static void __crc32(const void* data, size_t n_bytes, uint32_t* crc) {
+  static uint32_t table[0x100], wtable[0x100*sizeof(accum_t)];
+  size_t n_accum = n_bytes/sizeof(accum_t);
+  size_t i, j;
+  if(!*table)
+    init_tables(table, wtable);
+  for(i = 0; i < n_accum; ++i) {
+    accum_t a = *crc ^ ((accum_t*)data)[i];
+    for(j = *crc = 0; j < sizeof(accum_t); ++j)
+      *crc ^= wtable[(j << 8) + (uint8_t)(a >> 8*j)];
+  }
+  for(i = n_accum*sizeof(accum_t); i < n_bytes; ++i)
+    *crc = table[(uint8_t)*crc ^ ((uint8_t*)data)[i]] ^ *crc >> 8;
+}
+
+u_int32_t ethernet_crc32(const void* data, size_t n_bytes) {
+  u_int32_t crc = 0;
+  __crc32(data, n_bytes, &crc);
+  return crc;
+}
+
+/* *********************************************** */
+
+#ifdef USE_DPDK
+
+static const struct rte_eth_conf port_conf_default = {
+  .rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN }
+};
+
+/* ************************************ */
+
+int dpdk_port_init(int port, struct rte_mempool *mbuf_pool) {
+  struct rte_eth_conf port_conf = port_conf_default;
+  const u_int16_t rx_rings = 1, tx_rings = 1;
+  int retval;
+  u_int16_t q;
+
+  /* 1 RX queue */
+  retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
+
+  if(retval != 0)
+    return retval;
+
+  for (q = 0; q < rx_rings; q++) {
+    retval = rte_eth_rx_queue_setup(port, q, RX_RING_SIZE, rte_eth_dev_socket_id(port), NULL, mbuf_pool);
+    if(retval < 0)
+      return retval;
+  }
+
+  for (q = 0; q < tx_rings; q++) {
+    retval = rte_eth_tx_queue_setup(port, q, TX_RING_SIZE, rte_eth_dev_socket_id(port), NULL);
+    if(retval < 0)
+      return retval;
+  }
+
+  retval = rte_eth_dev_start(port);
+
+  if(retval < 0)
+    return retval;
+
+  rte_eth_promiscuous_enable(port);
+
+  return 0;
+}
+
+#endif