Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1294 insertions, 0 deletions

diff --git a/ui/tap-sctp-analysis.c b/ui/tap-sctp-analysis.c
new file mode 100644
index 0000000..9a4427a
--- /dev/null
+++ b/ui/tap-sctp-analysis.c
@@ -0,0 +1,1294 @@
+/*
+ * Copyright 2004-2013, Irene Ruengeler <i.ruengeler [AT] fh-muenster.de>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <string.h>
+#include <math.h>
+
+#include <glib.h>
+
+#include "epan/packet_info.h"
+#include "epan/tap.h"
+#include "epan/value_string.h"
+
+#include "ui/tap-sctp-analysis.h"
+
+#include "ui/simple_dialog.h"
+
+#define FORWARD_STREAM                     0
+#define BACKWARD_STREAM                    1
+#define FORWARD_ADD_FORWARD_VTAG           2
+#define BACKWARD_ADD_FORWARD_VTAG          3
+#define BACKWARD_ADD_BACKWARD_VTAG         4
+#define ADDRESS_FORWARD_STREAM             5
+#define ADDRESS_BACKWARD_STREAM            6
+#define ADDRESS_FORWARD_ADD_FORWARD_VTAG   7
+#define ADDRESS_BACKWARD_ADD_FORWARD_VTAG  8
+#define ADDRESS_BACKWARD_ADD_BACKWARD_VTAG 9
+#define ASSOC_NOT_FOUND                    10
+
+static sctp_allassocs_info_t sctp_tapinfo_struct = {0, NULL, FALSE, NULL};
+
+static void
+free_first(gpointer data, gpointer user_data _U_)
+{
+    g_free(data);
+}
+
+static void
+tsn_free(gpointer data)
+{
+    tsn_t *tsn;
+
+    tsn = (tsn_t *) data;
+    if (tsn->tsns != NULL)
+    {
+        g_list_free_full(tsn->tsns, g_free);
+    }
+    free_address(&tsn->src);
+    free_address(&tsn->dst);
+    g_free(tsn);
+}
+
+static void
+chunk_free(gpointer data)
+{
+    sctp_addr_chunk *chunk = (sctp_addr_chunk *) data;
+
+    free_address(&chunk->addr);
+    g_free(chunk);
+}
+
+static void
+store_free(gpointer data)
+{
+    address *addr = (address *) data;
+
+    free_address(addr);
+    g_free(addr);
+}
+
+static void
+reset(void *arg)
+{
+    sctp_allassocs_info_t *tapdata = (sctp_allassocs_info_t *)arg;
+    GList* list;
+    sctp_assoc_info_t * info;
+
+    list = g_list_first(tapdata->assoc_info_list);
+    while (list)
+    {
+        info = (sctp_assoc_info_t *) (list->data);
+
+        if (info->addr1 != NULL)
+        {
+            g_list_free_full(info->addr1, store_free);
+            info->addr1 = NULL;
+        }
+
+        if (info->addr2 != NULL)
+        {
+            g_list_free_full(info->addr2, store_free);
+            info->addr2 = NULL;
+        }
+
+        if (info->error_info_list != NULL)
+        {
+            g_list_free_full(info->error_info_list, g_free);
+            info->error_info_list = NULL;
+        }
+
+        if (info->frame_numbers != NULL)
+        {
+            g_list_free(info->frame_numbers);
+            info->frame_numbers = NULL;
+        }
+
+        if (info->tsn1 != NULL)
+        {
+            g_list_free_full(info->tsn1, tsn_free);
+            info->tsn1 = NULL;
+        }
+
+        if (info->tsn2 != NULL)
+        {
+            g_list_free_full(info->tsn2, tsn_free);
+            info->tsn2 = NULL;
+        }
+
+        if (info->sack1 != NULL)
+        {
+            g_list_free_full(info->sack1, tsn_free);
+            info->sack1 = NULL;
+        }
+
+        if (info->sack2 != NULL)
+        {
+            g_list_free_full(info->sack2, tsn_free);
+            info->sack2 = NULL;
+        }
+
+        if (info->sort_tsn1 != NULL)
+            g_ptr_array_free(info->sort_tsn1, TRUE);
+
+        if (info->sort_tsn2 != NULL)
+            g_ptr_array_free(info->sort_tsn2, TRUE);
+
+        if (info->sort_sack1 != NULL)
+            g_ptr_array_free(info->sort_sack1, TRUE);
+
+        if (info->sort_sack2 != NULL)
+            g_ptr_array_free(info->sort_sack2, TRUE);
+
+        if (info->min_max != NULL)
+        {
+            g_slist_foreach(info->min_max, free_first, NULL);
+            info->min_max = NULL;
+        }
+
+        if (info->addr_chunk_count) {
+            g_list_free_full(info->addr_chunk_count, chunk_free);
+        }
+
+        g_free(info->dir1);
+        g_free(info->dir2);
+        free_address(&info->src);
+        free_address(&info->dst);
+
+        g_free(list->data);
+        list = g_list_next(list);
+    }
+    g_list_free(tapdata->assoc_info_list);
+    tapdata->sum_tvbs = 0;
+    tapdata->assoc_info_list = NULL;
+}
+
+
+static sctp_assoc_info_t *
+calc_checksum(const struct _sctp_info *check_data, sctp_assoc_info_t *data)
+{
+    gboolean ok = FALSE;
+
+    if (check_data->adler32_calculated)
+    {
+        data->n_adler32_calculated++;
+        if (check_data->adler32_correct)
+            data->n_adler32_correct++;
+    }
+    if (check_data->crc32c_calculated)
+    {
+        data->n_crc32c_calculated++;
+        if (check_data->crc32c_correct)
+            data->n_crc32c_correct++;
+    }
+    if (data->n_adler32_calculated > 0)
+    {
+        if ((float)(data->n_adler32_correct*1.0/data->n_adler32_calculated) > 0.5)
+        {
+            char str[] = "ADLER32";
+            (void) g_strlcpy(data->checksum_type, str, 8);
+            data->n_checksum_errors=(data->n_adler32_calculated-data->n_adler32_correct);
+            ok = TRUE;
+        }
+    }
+
+    if (data->n_crc32c_calculated>0)
+    {
+        if ((float)(data->n_crc32c_correct*1.0/data->n_crc32c_calculated) > 0.5)
+        {
+            char str[] = "CRC32C";
+            (void) g_strlcpy(data->checksum_type, str, 8);
+            data->n_checksum_errors=data->n_crc32c_calculated-data->n_crc32c_correct;
+            ok = TRUE;
+        }
+    }
+
+    if (!ok)
+    {
+        char str[] = "UNKNOWN";
+        (void) g_strlcpy(data->checksum_type, str, 8);
+        data->n_checksum_errors=0;
+    }
+
+    return(data);
+
+}
+
+
+static sctp_assoc_info_t *
+find_assoc(sctp_tmp_info_t *needle)
+{
+    sctp_allassocs_info_t *assoc_info;
+    sctp_assoc_info_t *info = NULL;
+    GList* list;
+
+    assoc_info = &sctp_tapinfo_struct;
+    if ((list = g_list_last(assoc_info->assoc_info_list))!=NULL)
+    {
+        while (list)
+        {
+            info = (sctp_assoc_info_t*)(list->data);
+            if (needle->assoc_id == info->assoc_id)
+                return info;
+
+            list = g_list_previous(list);
+        }
+    }
+    return NULL;
+}
+
+static sctp_assoc_info_t *
+add_chunk_count(address *vadd, sctp_assoc_info_t *info, guint32 direction, guint32 type)
+{
+    GList *list;
+    sctp_addr_chunk *ch=NULL;
+    int i;
+
+    list = g_list_first(info->addr_chunk_count);
+
+    while (list)
+    {
+        ch = (sctp_addr_chunk *)(list->data);
+        if (ch->direction == direction)
+        {
+            if (addresses_equal(vadd, &ch->addr))
+            {
+                if (IS_SCTP_CHUNK_TYPE(type))
+                    ch->addr_count[type]++;
+                else
+                    ch->addr_count[OTHER_CHUNKS_INDEX]++;
+                return info;
+            }
+            else
+            {
+                list = g_list_next(list);
+            }
+        }
+        else
+            list = g_list_next(list);
+    }
+    ch = g_new(sctp_addr_chunk, 1);
+    ch->direction = direction;
+    copy_address(&ch->addr, vadd);
+    for (i=0; i < NUM_CHUNKS; i++)
+        ch->addr_count[i] = 0;
+
+    if (IS_SCTP_CHUNK_TYPE(type))
+        ch->addr_count[type]++;
+    else
+        ch->addr_count[OTHER_CHUNKS_INDEX]++;
+
+    info->addr_chunk_count = g_list_append(info->addr_chunk_count, ch);
+    return info;
+}
+
+static sctp_assoc_info_t *
+add_address(address *vadd, sctp_assoc_info_t *info, guint16 direction)
+{
+    GList *list;
+    address *v=NULL;
+
+    if (direction == 1)
+        list = g_list_first(info->addr1);
+    else
+        list = g_list_first(info->addr2);
+
+    while (list)
+    {
+        v = (address *) (list->data);
+        if (addresses_equal(vadd, v)) {
+            free_address(vadd);
+            g_free(vadd);
+            return info;
+        }
+        list = g_list_next(list);
+    }
+
+    if (direction == 1)
+        info->addr1 = g_list_append(info->addr1, vadd);
+    else if (direction==2)
+        info->addr2 = g_list_append(info->addr2, vadd);
+
+    return info;
+}
+
+static tap_packet_status
+packet(void *tapdata _U_, packet_info *pinfo, epan_dissect_t *edt _U_, const void *data, tap_flags_t flags _U_)
+{
+    const struct _sctp_info *sctp_info = (const struct _sctp_info *)data;
+    guint32 chunk_number = 0, tsnumber, framenumber;
+    sctp_tmp_info_t tmp_info;
+    sctp_assoc_info_t *info = NULL;
+    sctp_error_info_t *error = NULL;
+    guint16 type, length = 0;
+    address *store = NULL;
+    tsn_t *tsn = NULL;
+    tsn_t *sack = NULL;
+    guint8 *t_s_n = NULL;
+    gboolean sackchunk = FALSE;
+    gboolean datachunk = FALSE;
+    gboolean forwardchunk = FALSE;
+    struct tsn_sort *tsn_s;
+    int i;
+    guint8 idx = 0;
+    gboolean tsn_used = FALSE;
+    gboolean sack_used = FALSE;
+
+    framenumber = pinfo->num;
+
+    type = sctp_info->ip_src.type;
+
+    if (type == AT_IPv4 || type == AT_IPv6)
+        copy_address(&tmp_info.src, &sctp_info->ip_src);
+    else
+        set_address(&tmp_info.src, AT_NONE, 0, NULL);
+
+    type = sctp_info->ip_dst.type;
+
+    if (type == AT_IPv4 || type == AT_IPv6)
+        copy_address(&tmp_info.dst, &sctp_info->ip_dst);
+    else
+        set_address(&tmp_info.dst, AT_NONE, 0, NULL);
+
+    tmp_info.port1 = sctp_info->sport;
+    tmp_info.port2 = sctp_info->dport;
+
+    if (sctp_info->vtag_reflected)
+    {
+        tmp_info.verification_tag2 = sctp_info->verification_tag;
+        tmp_info.verification_tag1 = 0;
+    }
+    else
+    {
+        tmp_info.verification_tag1 = sctp_info->verification_tag;
+        tmp_info.verification_tag2 = 0;
+    }
+    tmp_info.n_tvbs = 0;
+    if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_CHUNK_ID)
+    {
+        tmp_info.initiate_tag = tvb_get_ntohl(sctp_info->tvb[0], 4);
+    }
+    else
+    {
+        tmp_info.initiate_tag = 0;
+    }
+
+    tmp_info.direction = sctp_info->direction;
+    tmp_info.assoc_id = sctp_info->assoc_index;
+    info = find_assoc(&tmp_info);
+    if (!info)
+    {
+        tmp_info.n_tvbs = sctp_info->number_of_tvbs;
+        sctp_tapinfo_struct.sum_tvbs+=sctp_info->number_of_tvbs;
+
+        if (sctp_info->number_of_tvbs > 0)
+        {
+            info = g_new0(sctp_assoc_info_t, 1);
+            info->assoc_id = sctp_info->assoc_index;
+            copy_address(&info->src, &tmp_info.src);
+            copy_address(&info->dst, &tmp_info.dst);
+            info->port1 = tmp_info.port1;
+            info->port2 = tmp_info.port2;
+            info->verification_tag1 = tmp_info.verification_tag1;
+            info->verification_tag2 = tmp_info.verification_tag2;
+            info->initiate_tag      = tmp_info.initiate_tag;
+            info->n_tvbs            = tmp_info.n_tvbs;
+            info->init              = FALSE;
+            info->initack           = FALSE;
+            info->check_address     = FALSE;
+            info->firstdata         = TRUE;
+            info->direction         = sctp_info->direction;
+            info->instream1         = 0;
+            info->outstream1        = 0;
+            info->instream2         = 0;
+            info->outstream2        = 0;
+            info                    = calc_checksum(sctp_info, info);
+            info->n_packets         = 1;
+            info->error_info_list   = NULL;
+            info->min_secs          = 0xffffffff;
+            info->min_usecs         = 0xffffffff;
+            info->max_secs          = 0;
+            info->max_usecs         = 0;
+            info->min_tsn2          = 0xFFFFFFFF;
+            info->min_tsn1          = 0xffffffff;
+            info->max_tsn1          = 0;
+            info->max_tsn2          = 0;
+            info->max_bytes1        = 0;
+            info->max_bytes2        = 0;
+            info->n_data_chunks     = 0;
+            info->n_data_bytes      = 0;
+            info->n_data_chunks_ep1 = 0;
+            info->n_data_bytes_ep1  = 0;
+            info->n_data_chunks_ep2 = 0;
+            info->n_data_bytes_ep2  = 0;
+            info->n_sack_chunks_ep1 = 0;
+            info->n_sack_chunks_ep2 = 0;
+            info->n_array_tsn1      = 0;
+            info->n_array_tsn2      = 0;
+            info->n_forward_chunks  = 0;
+            info->max_window1       = 0;
+            info->max_window2       = 0;
+            info->min_max           = NULL;
+            info->sort_tsn1         = g_ptr_array_new_with_free_func(g_free);
+            info->sort_tsn2         = g_ptr_array_new_with_free_func(g_free);
+            info->sort_sack1        = g_ptr_array_new_with_free_func(g_free);
+            info->sort_sack2        = g_ptr_array_new_with_free_func(g_free);
+            info->dir1              = g_new0(sctp_init_collision_t, 1);
+            info->dir1->init_min_tsn = 0xffffffff;
+            info->dir1->initack_min_tsn = 0xffffffff;
+            info->dir2              = g_new0(sctp_init_collision_t, 1);
+            info->dir2->init_min_tsn = 0xffffffff;
+            info->dir2->initack_min_tsn = 0xffffffff;
+
+            for (i=0; i < NUM_CHUNKS; i++)
+            {
+                info->chunk_count[i] = 0;
+                info->ep1_chunk_count[i] = 0;
+                info->ep2_chunk_count[i] = 0;
+            }
+            info->addr_chunk_count = NULL;
+
+            if (((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_CHUNK_ID) ||
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_ACK_CHUNK_ID) ||
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_DATA_CHUNK_ID) ||
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_I_DATA_CHUNK_ID) ||
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_SACK_CHUNK_ID) ||
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_NR_SACK_CHUNK_ID) ||
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_FORWARD_TSN_CHUNK_ID))
+            {
+                tsn = g_new0(tsn_t, 1);
+                copy_address(&tsn->src, &tmp_info.src);
+                copy_address(&tsn->dst, &tmp_info.dst);
+
+                sack = g_new0(tsn_t, 1);
+                copy_address(&sack->src, &tmp_info.src);
+                copy_address(&sack->dst, &tmp_info.dst);
+                sack->secs=tsn->secs   = (guint32)pinfo->rel_ts.secs;
+                sack->usecs=tsn->usecs = (guint32)pinfo->rel_ts.nsecs/1000;
+
+                if (((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_DATA_CHUNK_ID) ||
+                        ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_I_DATA_CHUNK_ID) ||
+                        ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_SACK_CHUNK_ID) ||
+                        ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_NR_SACK_CHUNK_ID) ||
+                        ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_FORWARD_TSN_CHUNK_ID))
+                {
+                    if (tsn->secs < info->min_secs)
+                    {
+                        info->min_secs  = tsn->secs;
+                        info->min_usecs = tsn->usecs;
+                    }
+                    else if (tsn->secs == info->min_secs && tsn->usecs < info->min_usecs)
+                        info->min_usecs = tsn->usecs;
+
+                    if (tsn->secs > info->max_secs)
+                    {
+                        info->max_secs  = tsn->secs;
+                        info->max_usecs = tsn->usecs;
+                    }
+                    else if (tsn->secs == info->max_secs && tsn->usecs > info->max_usecs)
+                        info->max_usecs = tsn->usecs;
+                }
+
+                sack->frame_number = tsn->frame_number = pinfo->num;
+            }
+            if ((tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_CHUNK_ID) || (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_ACK_CHUNK_ID))
+            {
+                info->min_tsn1 = tvb_get_ntohl(sctp_info->tvb[0],INIT_CHUNK_INITIAL_TSN_OFFSET);
+                info->verification_tag2 = tvb_get_ntohl(sctp_info->tvb[0], INIT_CHUNK_INITIATE_TAG_OFFSET);
+                info->instream1 = tvb_get_ntohs(sctp_info->tvb[0],INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET);
+                info->outstream1 = tvb_get_ntohs(sctp_info->tvb[0],INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET);
+                info->arwnd1 = tvb_get_ntohl(sctp_info->tvb[0], INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
+                for (chunk_number = 1; chunk_number < sctp_info->number_of_tvbs; chunk_number++)
+                {
+                    type = tvb_get_ntohs(sctp_info->tvb[chunk_number],0);
+                    if (type == IPV4ADDRESS_PARAMETER_ID)
+                    {
+                        store = g_new(address, 1);
+                        alloc_address_tvb(NULL, store, AT_IPv4, 4, sctp_info->tvb[chunk_number], IPV4_ADDRESS_OFFSET);
+                        info = add_address(store, info, info->direction);
+                    }
+                    else if (type == IPV6ADDRESS_PARAMETER_ID)
+                    {
+                        store = g_new(address, 1);
+                        alloc_address_tvb(NULL, store, AT_IPv6, 16, sctp_info->tvb[chunk_number], IPV6_ADDRESS_OFFSET);
+                        info = add_address(store, info, info->direction);
+                    }
+                }
+
+                if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_CHUNK_ID)
+                {
+                    info->init = TRUE;
+                }
+                else
+                {
+                    info->initack_dir = 1;
+                    info->initack     = TRUE;
+                }
+
+                idx = tvb_get_guint8(sctp_info->tvb[0],0);
+                if (!IS_SCTP_CHUNK_TYPE(idx))
+                    idx = OTHER_CHUNKS_INDEX;
+
+                info->chunk_count[idx]++;
+                info->ep1_chunk_count[idx]++;
+                info = add_chunk_count(&tmp_info.src, info, 1, idx);
+                if (info->direction == 1) {
+                    if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_CHUNK_ID) {
+                        info->dir1->init = TRUE;
+                        info->dir1->init_min_tsn = info->min_tsn1;
+                        info->dir1->init_vtag = info->verification_tag2;
+                    } else if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_ACK_CHUNK_ID) {
+                        info->dir1->initack = TRUE;
+                        info->dir1->initack_min_tsn = info->min_tsn1;
+                        info->dir1->initack_vtag = info->verification_tag2;
+                    }
+                } else {
+                    if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_CHUNK_ID) {
+                        info->dir2->init = TRUE;
+                        info->dir2->init_min_tsn = info->min_tsn1;
+                        info->dir2->init_vtag = info->verification_tag2;
+                    } else if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_ACK_CHUNK_ID) {
+                        info->dir2->initack = TRUE;
+                        info->dir2->initack_min_tsn = info->min_tsn1;
+                        info->dir2->initack_vtag = info->verification_tag2;
+                    }
+                }
+            }
+            else
+            {
+                if (((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_INIT_CHUNK_ID) &&
+                        ((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_INIT_ACK_CHUNK_ID) &&
+                        ((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_DATA_CHUNK_ID) &&
+                        ((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_I_DATA_CHUNK_ID) &&
+                        ((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_SACK_CHUNK_ID) &&
+                        ((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_NR_SACK_CHUNK_ID) &&
+                        ((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_FORWARD_TSN_CHUNK_ID))
+                {
+                    tsn = g_new0(tsn_t, 1);
+                    sack = g_new0(tsn_t, 1);
+                }
+                for (chunk_number = 0; chunk_number < sctp_info->number_of_tvbs; chunk_number++)
+                {
+                    idx = tvb_get_guint8(sctp_info->tvb[0],0);
+                    if (!IS_SCTP_CHUNK_TYPE(idx))
+                        idx = OTHER_CHUNKS_INDEX;
+
+                    info->chunk_count[idx]++;
+                    info->ep1_chunk_count[idx]++;
+                    info = add_chunk_count(&tmp_info.src, info, 1, idx);
+
+                    if ((tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_DATA_CHUNK_ID) ||
+                            (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_I_DATA_CHUNK_ID))
+                    {
+                        datachunk = TRUE;
+                        if (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_DATA_CHUNK_ID) {
+                            length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET) - DATA_CHUNK_HEADER_LENGTH;
+                        } else {
+                            length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET) - I_DATA_CHUNK_HEADER_LENGTH;
+                        }
+                        info->n_data_chunks++;
+                        info->n_data_bytes+=length;
+                        info->outstream1 = tvb_get_ntohs((sctp_info->tvb)[chunk_number], DATA_CHUNK_STREAM_ID_OFFSET)+1;
+                    }
+                    if ((tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_FORWARD_TSN_CHUNK_ID))
+                    {
+                        forwardchunk = TRUE;
+                        length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET);
+                        info->n_forward_chunks++;
+                    }
+                    if (datachunk || forwardchunk)
+                    {
+                        tsnumber = tvb_get_ntohl((sctp_info->tvb)[chunk_number], DATA_CHUNK_TSN_OFFSET);
+                        info->firstdata = FALSE;
+                        if (tsnumber < info->min_tsn1)
+                            info->min_tsn1 = tsnumber;
+                        if (tsnumber > info->max_tsn1)
+                        {
+                            if (datachunk)
+                            {
+                                info->n_data_chunks_ep1++;
+                                info->n_data_bytes_ep1+=length;
+                            }
+                            else
+                                info->n_forward_chunks_ep1++;
+                            info->max_tsn1 = tsnumber;
+                        }
+                        if (tsn->first_tsn == 0)
+                            tsn->first_tsn = tsnumber;
+                        if (datachunk)
+                        {
+                            t_s_n = (guint8 *)g_malloc(16);
+                            tvb_memcpy(sctp_info->tvb[chunk_number], (guint8 *)(t_s_n),0, 16);
+                        }
+                        else
+                        {
+                            t_s_n = (guint8 *)g_malloc(length);
+                            tvb_memcpy(sctp_info->tvb[chunk_number], (guint8 *)(t_s_n),0, length);
+                        }
+                        tsn->tsns = g_list_append(tsn->tsns, t_s_n);
+                        tsn_s = g_new(struct tsn_sort, 1);
+                        tsn_s->tsnumber = tsnumber;
+                        tsn_s->secs     = tsn->secs = (guint32)pinfo->rel_ts.secs;
+                        tsn_s->usecs    = tsn->usecs = (guint32)pinfo->rel_ts.nsecs/1000;
+                        tsn_s->offset   = 0;
+                        tsn_s->framenumber = framenumber;
+                        if (datachunk)
+                            if (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_DATA_CHUNK_ID) {
+                                tsn_s->length   = length - DATA_CHUNK_HEADER_LENGTH;
+                            } else {
+                                tsn_s->length   = length - I_DATA_CHUNK_HEADER_LENGTH;
+                            }
+                            else
+                                tsn_s->length   = length;
+                        if (tsn->secs < info->min_secs)
+                        {
+                            info->min_secs  = tsn->secs;
+                            info->min_usecs = tsn->usecs;
+                        }
+                        else if (tsn->secs == info->min_secs && tsn->usecs < info->min_usecs)
+                            info->min_usecs = tsn->usecs;
+
+                        if (tsn->secs > info->max_secs)
+                        {
+                            info->max_secs  = tsn->secs;
+                            info->max_usecs = tsn->usecs;
+                        }
+                        else if (tsn->secs == info->max_secs && tsn->usecs > info->max_usecs)
+                            info->max_usecs = tsn->usecs;
+                        g_ptr_array_add(info->sort_tsn1, tsn_s);
+                        info->n_array_tsn1++;
+                    }
+                    if ((tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_SACK_CHUNK_ID) ||
+                            (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_NR_SACK_CHUNK_ID) )
+                    {
+                        tsnumber = tvb_get_ntohl((sctp_info->tvb)[chunk_number], SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET);
+                        if (tsnumber < info->min_tsn2)
+                            info->min_tsn2 = tsnumber;
+                        if (tsnumber > info->max_tsn2)
+                            info->max_tsn2 = tsnumber;
+                        length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET);
+                        if (sack->first_tsn == 0)
+                            sack->first_tsn = tsnumber;
+                        t_s_n = (guint8 *)g_malloc(length);
+                        tvb_memcpy(sctp_info->tvb[chunk_number], (guint8 *)(t_s_n),0, length);
+                        sack->tsns = g_list_append(sack->tsns, t_s_n);
+                        sackchunk = TRUE;
+                        tsn_s = g_new(struct tsn_sort, 1);
+                        tsn_s->tsnumber = tsnumber;
+                        tsn_s->secs     = tsn->secs = (guint32)pinfo->rel_ts.secs;
+                        tsn_s->usecs    = tsn->usecs = (guint32)pinfo->rel_ts.nsecs/1000;
+                        tsn_s->offset   = 0;
+                        tsn_s->framenumber = framenumber;
+                        tsn_s->length   =  tvb_get_ntohl(sctp_info->tvb[chunk_number], SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
+                        if (tsn_s->length > info->max_window1)
+                            info->max_window1 = tsn_s->length;
+                        if (tsn->secs < info->min_secs)
+                        {
+                            info->min_secs  = tsn->secs;
+                            info->min_usecs = tsn->usecs;
+                        }
+                        else if (tsn->secs == info->min_secs && tsn->usecs < info->min_usecs)
+                            info->min_usecs = tsn->usecs;
+
+                        if (tsn->secs > info->max_secs)
+                        {
+                            info->max_secs  = tsn->secs;
+                            info->max_usecs = tsn->usecs;
+                        }
+                        else if (tsn->secs == info->max_secs && tsn->usecs > info->max_usecs)
+                            info->max_usecs = tsn->usecs;
+                        g_ptr_array_add(info->sort_sack2, tsn_s);
+                        info->n_sack_chunks_ep2++;
+                    }
+                }
+            }
+            if (info->verification_tag1 != 0 || info->verification_tag2 != 0)
+            {
+                guint32 number;
+                store = g_new(address, 1);
+                copy_address(store, &tmp_info.src);
+                info  = add_address(store, info, info->direction);
+                store = g_new(address, 1);
+                copy_address(store, &tmp_info.dst);
+                if (info->direction == 1)
+                    info = add_address(store, info, 2);
+                else
+                    info = add_address(store, info, 1);
+                number = pinfo->num;
+                info->frame_numbers=g_list_prepend(info->frame_numbers, GUINT_TO_POINTER(number));
+                if (datachunk || forwardchunk) {
+                    info->tsn1 = g_list_prepend(info->tsn1, tsn);
+                    tsn_used = TRUE;
+                }
+                if (sackchunk == TRUE) {
+                    info->sack2 = g_list_prepend(info->sack2, sack);
+                    sack_used = TRUE;
+                }
+                sctp_tapinfo_struct.assoc_info_list = g_list_append(sctp_tapinfo_struct.assoc_info_list, info);
+            }
+            else
+            {
+                gchar* tmp_str;
+                error = g_new(sctp_error_info_t, 1);
+                error->frame_number = pinfo->num;
+                error->chunk_info[0] = '\0';
+                if ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_CHUNK_ID)
+                {
+                    tmp_str = val_to_str_wmem(NULL, tvb_get_guint8(sctp_info->tvb[0],0),chunk_type_values,"Reserved (%d)");
+                    (void) g_strlcpy(error->chunk_info, tmp_str, 200);
+                    wmem_free(NULL, tmp_str);
+                }
+                else
+                {
+                    for (chunk_number = 0; chunk_number < sctp_info->number_of_tvbs; chunk_number++)
+                    {
+                        tmp_str = val_to_str_wmem(NULL, tvb_get_guint8(sctp_info->tvb[chunk_number],0),chunk_type_values,"Reserved (%d)");
+                        (void) g_strlcat(error->chunk_info, tmp_str, 200);
+                        wmem_free(NULL, tmp_str);
+                    }
+                }
+                error->info_text = "INFOS";
+                info->error_info_list = g_list_append(info->error_info_list, error);
+            }
+        }
+    } /* endif (!info) */
+    else
+    {
+        guint32 number;
+        info->direction = sctp_info->direction;
+
+        if (info->verification_tag1 == 0 && info->verification_tag2 != sctp_info->verification_tag) {
+            info->verification_tag1 = sctp_info->verification_tag;
+        } else if (info->verification_tag2 == 0 && info->verification_tag1 != sctp_info->verification_tag) {
+            info->verification_tag2 = sctp_info->verification_tag;
+        }
+        if (((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_CHUNK_ID) ||
+                ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_ACK_CHUNK_ID) ||
+                ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_DATA_CHUNK_ID) ||
+                ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_I_DATA_CHUNK_ID) ||
+                ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_SACK_CHUNK_ID) ||
+                ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_NR_SACK_CHUNK_ID) ||
+                ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_FORWARD_TSN_CHUNK_ID))
+        {
+
+            tsn = g_new0(tsn_t, 1);
+            copy_address(&tsn->src, &tmp_info.src);
+            copy_address(&tsn->dst, &tmp_info.dst);
+
+            sack = g_new0(tsn_t, 1);
+            copy_address(&sack->src, &tmp_info.src);
+            copy_address(&sack->dst, &tmp_info.dst);
+            sack->secs=tsn->secs = (guint32)pinfo->rel_ts.secs;
+            sack->usecs=tsn->usecs = (guint32)pinfo->rel_ts.nsecs/1000;
+
+            if (((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_DATA_CHUNK_ID) ||
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_I_DATA_CHUNK_ID) ||
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_SACK_CHUNK_ID) ||
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_NR_SACK_CHUNK_ID) ||
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_FORWARD_TSN_CHUNK_ID))
+            {
+                if (tsn->secs < info->min_secs)
+                {
+                    info->min_secs  = tsn->secs;
+                    info->min_usecs = tsn->usecs;
+                }
+                else if (tsn->secs == info->min_secs && tsn->usecs < info->min_usecs)
+                    info->min_usecs = tsn->usecs;
+
+                if (tsn->secs > info->max_secs)
+                {
+                    info->max_secs  = tsn->secs;
+                    info->max_usecs = tsn->usecs;
+                }
+                else if (tsn->secs == info->max_secs && tsn->usecs > info->max_usecs)
+                    info->max_usecs = tsn->usecs;
+            }
+            sack->frame_number = tsn->frame_number = pinfo->num;
+        }
+        number = pinfo->num;
+        info->frame_numbers=g_list_prepend(info->frame_numbers, GUINT_TO_POINTER(number));
+
+        store = g_new(address, 1);
+        copy_address(store, &tmp_info.src);
+
+        switch (info->direction) {
+            case 1:
+                info = add_address(store, info, 1);
+                break;
+            case 2:
+                info = add_address(store, info, 2);
+                break;
+            default:
+                g_free(store);
+                break;
+        }
+
+        store = g_new(address, 1);
+        copy_address(store, &tmp_info.dst);
+
+        switch (info->direction) {
+            case 1:
+                info = add_address(store, info, 2);
+                break;
+            case 2:
+                info = add_address(store, info, 1);
+                break;
+            default:
+                g_free(store);
+                break;
+        }
+
+        if (((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_ACK_CHUNK_ID) ||
+                ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_CHUNK_ID))
+        {
+            tsnumber = tvb_get_ntohl((sctp_info->tvb)[chunk_number], INIT_CHUNK_INITIAL_TSN_OFFSET);
+            if (info->direction == 2)
+            {
+                if (tsnumber < info->min_tsn2)
+                    info->min_tsn2 = tsnumber;
+                if (tsnumber > info->max_tsn2)
+                    info->max_tsn2 = tsnumber;
+                info->instream2 = tvb_get_ntohs(sctp_info->tvb[0],INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET);
+                info->outstream2 = tvb_get_ntohs(sctp_info->tvb[0],INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET);
+                info->arwnd2 = tvb_get_ntohl(sctp_info->tvb[0],INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
+                info->tsn2 = g_list_prepend(info->tsn2, tsn);
+                tsn_used = TRUE;
+            }
+            else if (info->direction == 1)
+            {
+                if (tsnumber < info->min_tsn1)
+                    info->min_tsn1 = tsnumber;
+                if (tsnumber > info->max_tsn1)
+                    info->max_tsn1 = tsnumber;
+                info->instream1 = tvb_get_ntohs(sctp_info->tvb[0],INIT_CHUNK_NUMBER_OF_INBOUND_STREAMS_OFFSET);
+                info->outstream1 = tvb_get_ntohs(sctp_info->tvb[0],INIT_CHUNK_NUMBER_OF_OUTBOUND_STREAMS_OFFSET);
+                info->arwnd1 = tvb_get_ntohl(sctp_info->tvb[0],INIT_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
+                info->tsn1 = g_list_prepend(info->tsn1, tsn);
+                tsn_used = TRUE;
+            }
+
+            idx = tvb_get_guint8(sctp_info->tvb[0],0);
+            if (!IS_SCTP_CHUNK_TYPE(idx))
+                idx = OTHER_CHUNKS_INDEX;
+            info->chunk_count[idx]++;
+            if (info->direction == 1)
+                info->ep1_chunk_count[idx]++;
+            else
+                info->ep2_chunk_count[idx]++;
+            info = add_chunk_count(&tmp_info.src, info, info->direction, idx);
+            for (chunk_number = 1; chunk_number < sctp_info->number_of_tvbs; chunk_number++)
+            {
+                type = tvb_get_ntohs(sctp_info->tvb[chunk_number],0);
+                if (type == IPV4ADDRESS_PARAMETER_ID)
+                {
+                    store = g_new(address, 1);
+                    alloc_address_tvb(NULL, store, AT_IPv4, 4, sctp_info->tvb[chunk_number], IPV4_ADDRESS_OFFSET);
+                    info = add_address(store, info, info->direction);
+                }
+                else if (type == IPV6ADDRESS_PARAMETER_ID)
+                {
+                    store = g_new(address, 1);
+                    alloc_address_tvb(NULL, store, AT_IPv6, 16, sctp_info->tvb[chunk_number], IPV6_ADDRESS_OFFSET);
+                    info = add_address(store, info, info->direction);
+                }
+            }
+            if (info->direction == 1) {
+                if (info->dir1->init || info->dir1->initack) {
+                    info->init_collision = TRUE;
+                }
+                if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_CHUNK_ID) {
+                    info->dir1->init = TRUE;
+                    info->dir1->init_min_tsn = tvb_get_ntohl((sctp_info->tvb)[0], INIT_CHUNK_INITIAL_TSN_OFFSET);
+                    info->min_tsn1 = info->dir1->init_min_tsn;
+                    info->dir1->init_vtag = tvb_get_ntohl(sctp_info->tvb[0], INIT_CHUNK_INITIATE_TAG_OFFSET);
+                } else if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_ACK_CHUNK_ID) {
+                    info->dir1->initack = TRUE;
+                    info->dir1->initack_min_tsn = tvb_get_ntohl((sctp_info->tvb)[0], INIT_CHUNK_INITIAL_TSN_OFFSET);
+                    info->min_tsn1 = info->dir1->initack_min_tsn;
+                    info->dir1->initack_vtag = tvb_get_ntohl(sctp_info->tvb[0], INIT_CHUNK_INITIATE_TAG_OFFSET);
+                }
+            } else {
+                if (info->dir2->init || info->dir2->initack) {
+                    info->init_collision = TRUE;
+                }
+                if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_CHUNK_ID) {
+                    info->dir2->init = TRUE;
+                    info->dir2->init_min_tsn = tvb_get_ntohl((sctp_info->tvb)[0], INIT_CHUNK_INITIAL_TSN_OFFSET);
+                    info->min_tsn2 = info->dir2->init_min_tsn;
+                    info->dir2->init_vtag = tvb_get_ntohl(sctp_info->tvb[0], INIT_CHUNK_INITIATE_TAG_OFFSET);
+                } else if (tvb_get_guint8(sctp_info->tvb[0],0) == SCTP_INIT_ACK_CHUNK_ID) {
+                    info->dir2->initack = TRUE;
+                    info->dir2->initack_min_tsn = tvb_get_ntohl((sctp_info->tvb)[0], INIT_CHUNK_INITIAL_TSN_OFFSET);
+                    info->min_tsn2 = info->dir2->initack_min_tsn;
+                    info->dir2->initack_vtag = tvb_get_ntohl(sctp_info->tvb[0], INIT_CHUNK_INITIATE_TAG_OFFSET);
+                }
+            }
+            if ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_ACK_CHUNK_ID)
+            {
+                info->initack = TRUE;
+                info->initack_dir = info->direction;
+            }
+            else if ((tvb_get_guint8(sctp_info->tvb[0],0)) == SCTP_INIT_CHUNK_ID)
+            {
+                info->init = TRUE;
+            }
+        }
+        else
+        {
+            if (((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_INIT_ACK_CHUNK_ID) &&
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_DATA_CHUNK_ID) &&
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_I_DATA_CHUNK_ID) &&
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_SACK_CHUNK_ID) &&
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_NR_SACK_CHUNK_ID) &&
+                    ((tvb_get_guint8(sctp_info->tvb[0],0)) != SCTP_FORWARD_TSN_CHUNK_ID))
+            {
+                if (!sack)
+                    sack = g_new0(tsn_t, 1);
+                sack->tsns = NULL;
+                sack->first_tsn = 0;
+                if (!tsn)
+                    tsn = g_new0(tsn_t, 1);
+                tsn->tsns = NULL;
+                tsn->first_tsn = 0;
+            }
+            for (chunk_number = 0; chunk_number < sctp_info->number_of_tvbs; chunk_number++)
+            {
+                idx = tvb_get_guint8(sctp_info->tvb[chunk_number],0);
+                if (!IS_SCTP_CHUNK_TYPE(idx))
+                    idx = OTHER_CHUNKS_INDEX;
+
+                info->chunk_count[idx]++;
+                if (info->direction == 1)
+                    info->ep1_chunk_count[idx]++;
+                else
+                    info->ep2_chunk_count[idx]++;
+                info = add_chunk_count(&tmp_info.src, info,info->direction, idx);
+
+                if ((tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_DATA_CHUNK_ID) ||
+                        (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_I_DATA_CHUNK_ID))
+                    datachunk = TRUE;
+                if (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_FORWARD_TSN_CHUNK_ID)
+                    forwardchunk = TRUE;
+                if ((datachunk || forwardchunk) && tsn != NULL)
+                {
+                    tsnumber = tvb_get_ntohl((sctp_info->tvb)[chunk_number], DATA_CHUNK_TSN_OFFSET);
+                    if (tsn->first_tsn == 0)
+                        tsn->first_tsn = tsnumber;
+                    if (datachunk)
+                    {
+                        t_s_n = (guint8 *)g_malloc(16);
+                        tvb_memcpy(sctp_info->tvb[chunk_number], (guint8 *)(t_s_n),0, 16);
+                        if (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_DATA_CHUNK_ID) {
+                            length=tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET)-DATA_CHUNK_HEADER_LENGTH;
+                        } else {
+                            length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET) - I_DATA_CHUNK_HEADER_LENGTH;
+                        }
+                        info->n_data_chunks++;
+                        info->n_data_bytes+=length;
+                    }
+                    else
+                    {
+                        length=tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET);
+                        t_s_n = (guint8 *)g_malloc(length);
+                        tvb_memcpy(sctp_info->tvb[chunk_number], (guint8 *)(t_s_n),0, length);
+                        info->n_forward_chunks++;
+                    }
+                    tsn->tsns = g_list_append(tsn->tsns, t_s_n);
+
+                    tsn_s = g_new0(struct tsn_sort, 1);
+                    tsn_s->tsnumber = tsnumber;
+                    tsn_s->secs  = tsn->secs = (guint32)pinfo->rel_ts.secs;
+                    tsn_s->usecs = tsn->usecs = (guint32)pinfo->rel_ts.nsecs/1000;
+                    tsn_s->offset = 0;
+                    tsn_s->framenumber = framenumber;
+                    tsn_s->length = length;
+
+                    if (tsn->secs < info->min_secs)
+                    {
+                        info->min_secs  = tsn->secs;
+                        info->min_usecs = tsn->usecs;
+                    }
+                    else if (tsn->secs == info->min_secs && tsn->usecs < info->min_usecs)
+                        info->min_usecs = tsn->usecs;
+
+                    if (tsn->secs > info->max_secs)
+                    {
+                        info->max_secs  = tsn->secs;
+                        info->max_usecs = tsn->usecs;
+                    }
+                    else if (tsn->secs == info->max_secs && tsn->usecs > info->max_usecs)
+                        info->max_usecs = tsn->usecs;
+
+                    if (info->direction == 1)
+                    {
+                        if (info->firstdata) {
+                            info->firstdata = FALSE;
+                            if (info->init_collision) {
+                                if (tsnumber != info->min_tsn1) {
+                                    info->min_tsn1 = info->dir1->init_min_tsn;
+                                }
+                                info->min_tsn2 = info->dir2->initack_min_tsn;
+                            }
+                        } else {
+                            if(tsnumber < info->min_tsn1) {
+                                info->min_tsn1 = tsnumber;
+                            }
+                        }
+                        if ((info->init || (info->initack && info->initack_dir == 1))&& tsnumber >= info->min_tsn1 && tsnumber <= info->max_tsn1)
+                        {
+                            if (datachunk)
+                            {
+                                info->n_data_chunks_ep1++;
+                                info->n_data_bytes_ep1 += length;
+                            }
+                            else if (forwardchunk)
+                            {
+                                info->n_forward_chunks_ep1++;
+                            }
+                        }
+                        if(tsnumber > info->max_tsn1)
+                        {
+                            info->max_tsn1 = tsnumber;
+                            if (datachunk)
+                            {
+                                info->n_data_chunks_ep1++;
+                                info->n_data_bytes_ep1 += length;
+                            }
+                            else if (forwardchunk)
+                            {
+                                info->n_forward_chunks_ep1++;
+                            }
+                        }
+                        if (datachunk)
+                        {
+                            if (info->init == FALSE) {
+                                guint16 tmp = tvb_get_ntohs((sctp_info->tvb)[chunk_number], DATA_CHUNK_STREAM_ID_OFFSET)+1;
+                                if (info->outstream1 < tmp) info->outstream1 = tmp;
+                            }
+                            if (info->initack == FALSE) {
+                                guint16 tmp = tvb_get_ntohs((sctp_info->tvb)[chunk_number], DATA_CHUNK_STREAM_ID_OFFSET)+1;
+                                if (info->instream2 < tmp) info->instream2 = tmp;
+                            }
+                        }
+
+                        g_ptr_array_add(info->sort_tsn1, tsn_s);
+                        info->n_array_tsn1++;
+                    }
+                    else if (info->direction == 2)
+                    {
+                        if (info->firstdata) {
+                            info->firstdata = FALSE;
+                            if (info->init_collision) {
+                                if (tsnumber != info->min_tsn2) {
+                                    info->min_tsn2 = info->dir2->init_min_tsn;
+                                    info->initack_dir = 2;
+                                }
+                                info->min_tsn1 = info->dir1->initack_min_tsn;
+                            }
+                        } else {
+                            if(tsnumber < info->min_tsn2)
+                                info->min_tsn2 = tsnumber;
+                        }
+
+                        if ((info->initack && info->initack_dir == 2)&& tsnumber >= info->min_tsn2 && tsnumber <= info->max_tsn2)
+                        {
+                            if (datachunk)
+                            {
+                                if (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_DATA_CHUNK_ID) {
+                                    length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET) - DATA_CHUNK_HEADER_LENGTH;
+                                } else {
+                                    length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET) - I_DATA_CHUNK_HEADER_LENGTH;
+                                }
+                                info->n_data_chunks_ep2++;
+                                info->n_data_bytes_ep2+=length;
+                            }
+                            else if (forwardchunk)
+                            {
+                                info->n_forward_chunks_ep2++;
+                            }
+                        }
+                        if (tsnumber > info->max_tsn2)
+                        {
+                            info->max_tsn2 = tsnumber;
+                            if (datachunk)
+                            {
+                                if (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_DATA_CHUNK_ID) {
+                                    length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET) - DATA_CHUNK_HEADER_LENGTH;
+                                } else {
+                                    length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET) - I_DATA_CHUNK_HEADER_LENGTH;
+                                }
+                                info->n_data_chunks_ep2++;
+                                info->n_data_bytes_ep2+=length;
+                            }
+                            else if (forwardchunk)
+                            {
+                                info->n_forward_chunks_ep2++;
+                            }
+                        }
+                        if (datachunk)
+                        {
+                            if (info->init == FALSE) {
+                                guint16 tmp = tvb_get_ntohs((sctp_info->tvb)[chunk_number], DATA_CHUNK_STREAM_ID_OFFSET)+1;
+                                if (info->instream1 < tmp) info->instream1 = tmp;
+                            }
+                            if (info->initack == FALSE) {
+                                guint16 tmp = tvb_get_ntohs((sctp_info->tvb)[chunk_number], DATA_CHUNK_STREAM_ID_OFFSET)+1;
+                                if (info->outstream2 < tmp) info->outstream2 = tmp;
+                            }
+                        }
+
+                        g_ptr_array_add(info->sort_tsn2, tsn_s);
+                        info->n_array_tsn2++;
+                    }
+                }
+                else if (((tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_SACK_CHUNK_ID) ||
+                            (tvb_get_guint8(sctp_info->tvb[chunk_number],0) == SCTP_NR_SACK_CHUNK_ID)) &&
+                        sack != NULL)
+                {
+                    tsnumber = tvb_get_ntohl((sctp_info->tvb)[chunk_number], SACK_CHUNK_CUMULATIVE_TSN_ACK_OFFSET);
+                    length = tvb_get_ntohs(sctp_info->tvb[chunk_number], CHUNK_LENGTH_OFFSET);
+
+                    if (sack->first_tsn == 0)
+                        sack->first_tsn = tsnumber;
+
+                    t_s_n = (guint8 *)g_malloc(length);
+                    tvb_memcpy(sctp_info->tvb[chunk_number], (guint8 *)(t_s_n),0, length);
+                    sack->tsns = g_list_append(sack->tsns, t_s_n);
+                    sackchunk = TRUE;
+                    tsn_s = g_new0(struct tsn_sort, 1);
+                    tsn_s->tsnumber = tsnumber;
+                    tsn_s->secs   = tsn->secs = (guint32)pinfo->rel_ts.secs;
+                    tsn_s->usecs  = tsn->usecs = (guint32)pinfo->rel_ts.nsecs/1000;
+                    tsn_s->offset = 0;
+                    tsn_s->framenumber = framenumber;
+                    tsn_s->length = tvb_get_ntohl(sctp_info->tvb[chunk_number], SACK_CHUNK_ADV_REC_WINDOW_CREDIT_OFFSET);
+
+                    if (tsn->secs < info->min_secs)
+                    {
+                        info->min_secs  = tsn->secs;
+                        info->min_usecs = tsn->usecs;
+                    }
+                    else if (tsn->secs == info->min_secs && tsn->usecs < info->min_usecs)
+                        info->min_usecs = tsn->usecs;
+
+                    if (tsn->secs > info->max_secs)
+                    {
+                        info->max_secs  = tsn->secs;
+                        info->max_usecs = tsn->usecs;
+                    }
+                    else if (tsn->secs == info->max_secs && tsn->usecs > info->max_usecs)
+                        info->max_usecs = tsn->usecs;
+
+
+                    if (info->direction == 2)
+                    {
+                        if(tsnumber < info->min_tsn1)
+                            info->min_tsn1 = tsnumber;
+                        if(tsnumber > info->max_tsn1)
+                            info->max_tsn1 = tsnumber;
+                        if (tsn_s->length > info->max_window1)
+                            info->max_window1 = tsn_s->length;
+                        g_ptr_array_add(info->sort_sack1, tsn_s);
+                        info->n_sack_chunks_ep1++;
+                    }
+                    else if (info->direction == 1)
+                    {
+                        if(tsnumber < info->min_tsn2)
+                            info->min_tsn2 = tsnumber;
+                        if(tsnumber > info->max_tsn2)
+                            info->max_tsn2 = tsnumber;
+                        if (tsn_s->length > info->max_window2)
+                            info->max_window2 = tsn_s->length;
+                        g_ptr_array_add(info->sort_sack2, tsn_s);
+                        info->n_sack_chunks_ep2++;
+                    }
+                }
+            }
+        }
+
+        if (datachunk || forwardchunk)
+        {
+            if (info->direction == 1)
+                info->tsn1 = g_list_prepend(info->tsn1, tsn);
+            else if (info->direction == 2)
+                info->tsn2 = g_list_prepend(info->tsn2, tsn);
+            tsn_used = TRUE;
+        }
+        if (sackchunk == TRUE)
+        {
+            if (info->direction == 1)
+                info->sack2 = g_list_prepend(info->sack2, sack);
+            else if(info->direction == 2)
+                info->sack1 = g_list_prepend(info->sack1, sack);
+            sack_used = TRUE;
+        }
+        info->n_tvbs += sctp_info->number_of_tvbs;
+        sctp_tapinfo_struct.sum_tvbs += sctp_info->number_of_tvbs;
+        info = calc_checksum(sctp_info, info);
+        info->n_packets++;
+    }
+    if (tsn && !tsn_used)
+        tsn_free(tsn);
+    if (sack && !sack_used)
+        tsn_free(sack);
+    free_address(&tmp_info.src);
+    free_address(&tmp_info.dst);
+    return TAP_PACKET_REDRAW;
+}
+
+
+/****************************************************************************/
+void
+remove_tap_listener_sctp_stat(void)
+{
+    if (sctp_tapinfo_struct.is_registered) {
+        remove_tap_listener(&sctp_tapinfo_struct);
+        sctp_tapinfo_struct.is_registered = FALSE;
+    }
+}
+
+
+void
+sctp_stat_scan(void)
+{
+    if (!sctp_tapinfo_struct.is_registered) {
+        register_tap_listener_sctp_stat();
+    }
+}
+
+const sctp_allassocs_info_t *
+sctp_stat_get_info(void)
+{
+    return &sctp_tapinfo_struct;
+}
+
+const sctp_assoc_info_t *
+get_sctp_assoc_info(guint16 assoc_id)
+{
+    sctp_tmp_info_t needle = { .assoc_id = assoc_id };
+    return find_assoc(&needle);
+}
+
+void
+register_tap_listener_sctp_stat(void)
+{
+    GString *error_string;
+
+    if (!sctp_tapinfo_struct.is_registered)
+    {
+        if ((error_string = register_tap_listener("sctp", &sctp_tapinfo_struct, NULL, 0, reset, packet, NULL, NULL))) {
+            simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "%s", error_string->str);
+            g_string_free(error_string, TRUE);
+            return;
+        }
+        sctp_tapinfo_struct.is_registered=TRUE;
+    }
+}