path: root/gtk/rlc_lte_stat_dlg.c

/* rlc_lte_stat_dlg.c
 * Copyright 2010 Martin Mathieson
 *
 * $Id$
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */


/* TODO:
   - per-channel graph tap
   - apply top-level filter (e.g. to tap only one sector)
   - common channel stats
*/

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif

#include <string.h>

#include <gtk/gtk.h>

#include "gtk/gtkglobals.h"

#include <epan/packet.h>
#include <epan/packet_info.h>
#include <epan/tap.h>
#include <epan/dissectors/packet-rlc-lte.h>

#include "../register.h"
#include "../simple_dialog.h"
#include "../stat_menu.h"

#include "gtk/dlg_utils.h"
#include "gtk/gui_stat_menu.h"
#include "gtk/gui_utils.h"
#include "gtk/help_dlg.h"
#include "gtk/main.h"

/**********************************************/
/* Table column identifiers and title strings */

enum {
    UEID_COLUMN,
    UL_FRAMES_COLUMN,
    UL_BYTES_COLUMN,
    DL_FRAMES_COLUMN,
    DL_BYTES_COLUMN,
    TABLE_COLUMN,
    NUM_UE_COLUMNS
};

enum {
    CHANNEL_NAME,
    CHANNEL_MODE,
    CHANNEL_UL_FRAMES,
    CHANNEL_UL_BYTES,
    CHANNEL_UL_ACKS,
    CHANNEL_UL_NACKS,
    CHANNEL_DL_FRAMES,
    CHANNEL_DL_BYTES,
    CHANNEL_DL_ACKS,
    CHANNEL_DL_NACKS,
    CHANNEL_TABLE_COLUMN,
    NUM_CHANNEL_COLUMNS
};

static const gchar *ue_titles[] = { "UEId",
                                    "UL Frames", "UL Bytes",
                                    "DL Frames", "DL Bytes"};

static const gchar *channel_titles[] = { "", "Mode",
                                         "UL Frames", "UL Bytes", "UL ACKs", "UL NACKs",
                                         "DL Frames", "DL Bytes", "DL ACKs", "DL NACKs"};

/* Stats kept for one channel */
typedef struct rlc_channel_stats {
    guint8   inUse;
    guint8   rlcMode;
    guint16  channelType;
    guint16  channelId;

    guint32 UL_frames;
    guint32 UL_bytes;
    guint32 DL_frames;
    guint32 DL_bytes;

    guint32 UL_acks;
    guint32 UL_nacks;

    guint32 DL_acks;
    guint32 DL_nacks;

    GtkTreeIter iter;
    gboolean iter_valid;
} rlc_channel_stats;

/* Stats for one UE */
typedef struct rlc_lte_row_data {
    /* Key for matching this row */
    guint16 ueid;

    gboolean is_predefined_data;

    guint32 UL_frames;
    guint32 UL_total_bytes;

    guint32 DL_frames;
    guint32 DL_total_bytes;

    rlc_channel_stats CCCH_stats;
    rlc_channel_stats srb_stats[2];
    rlc_channel_stats drb_stats[32];
} rlc_lte_row_data;


/* One row/UE in the UE table */
typedef struct rlc_lte_ep {
    struct rlc_lte_ep* next;
    struct rlc_lte_row_data stats;
    GtkTreeIter iter;                                         
    gboolean iter_valid;
} rlc_lte_ep_t;


/* Top-level dialog and labels */
static GtkWidget  *rlc_lte_stat_dlg_w = NULL;
static GtkWidget  *rlc_lte_stat_ues_lb = NULL;
static GtkWidget  *rlc_lte_stat_channels_lb = NULL;
static GtkWidget  *rlc_lte_stat_filter_buttons_lb = NULL;

GtkWidget         *ul_filter_bt;
GtkWidget         *dl_filter_bt;
GtkWidget         *uldl_filter_bt;

gboolean          s_show_mac = FALSE;



/* Used to keep track of whole RLC LTE statistics window */
typedef struct rlc_lte_stat_t {
    GtkTreeView   *ue_table;
    rlc_lte_ep_t  *ep_list;
    guint32       total_frames;

    GtkTreeView   *channel_table;
} rlc_lte_stat_t;


static void enable_filter_buttons(guint8 enabled)
{
    gtk_widget_set_sensitive(ul_filter_bt, enabled);
    gtk_widget_set_sensitive(dl_filter_bt, enabled);
    gtk_widget_set_sensitive(uldl_filter_bt, enabled);
}



/* Reset the statistics window */
static void
rlc_lte_stat_reset(void *phs)
{
    rlc_lte_stat_t* rlc_lte_stat = (rlc_lte_stat_t *)phs;
    rlc_lte_ep_t* list = rlc_lte_stat->ep_list;
    gchar title[256];
    GtkListStore *store;

    /* Set the title */
    if (rlc_lte_stat_dlg_w != NULL) {
        g_snprintf(title, sizeof(title), "Wireshark: LTE RLC Traffic Statistics: %s",
                   cf_get_display_name(&cfile));
        gtk_window_set_title(GTK_WINDOW(rlc_lte_stat_dlg_w), title);
    }

    g_snprintf(title, sizeof(title), "0 UEs");
    gtk_frame_set_label(GTK_FRAME(rlc_lte_stat_ues_lb), title);

    rlc_lte_stat->total_frames = 0;

    /* Remove all entries from the UE list */
    store = GTK_LIST_STORE(gtk_tree_view_get_model(rlc_lte_stat->ue_table));
    gtk_list_store_clear(store);

    if (!list) {
        return;
    }

    rlc_lte_stat->ep_list = NULL;
}


/* Allocate a rlc_lte_ep_t struct to store info for new UE */
static rlc_lte_ep_t* alloc_rlc_lte_ep(struct rlc_lte_tap_info *si, packet_info *pinfo _U_)
{
    rlc_lte_ep_t* ep;
    int n;

    if (!si) {
        return NULL;
    }

    if (!(ep = g_malloc(sizeof(rlc_lte_ep_t)))) {
        return NULL;
    }

    /* Copy SI data into ep->stats */
    ep->stats.ueid = si->ueid;

    /* Counts for new UE are all 0 */
    ep->stats.UL_frames = 0;
    ep->stats.DL_frames = 0;
    ep->stats.UL_total_bytes = 0;
    ep->stats.DL_total_bytes = 0;

    memset(&ep->stats.CCCH_stats, 0, sizeof(rlc_channel_stats));
    for (n=0; n < 2; n++) {
        memset(&ep->stats.srb_stats[n], 0, sizeof(rlc_channel_stats));
    }
    for (n=0; n < 32; n++) {
        memset(&ep->stats.drb_stats[n], 0, sizeof(rlc_channel_stats));
    }

    ep->next = NULL;
    ep->iter_valid = FALSE;

    return ep;
}


/* Return string for RLC mode for display */
static const char *print_rlc_channel_mode(guint8 mode)
{
    static char unknown[16];

    switch (mode) {
        case RLC_TM_MODE:  return "TM";
        case RLC_UM_MODE:  return "UM";
        case RLC_AM_MODE:  return "AM";
        case RLC_PREDEF:   return "Predef";

        default:
            g_snprintf(unknown, 32, "Unknown (%u)", mode);
            return unknown;
    }
}


/* Process stat struct for a RLC LTE frame */
static int
rlc_lte_stat_packet(void *phs, packet_info *pinfo, epan_dissect_t *edt _U_,
                    const void *phi)
{
    /* Get reference to stat window instance */
    rlc_lte_stat_t *hs = (rlc_lte_stat_t *)phs;
    rlc_lte_ep_t *tmp = NULL, *te = NULL;
    rlc_channel_stats *channel_stats = NULL;

    /* Cast tap info struct */
    struct rlc_lte_tap_info *si = (struct rlc_lte_tap_info *)phi;

    /* Need this */
    if (!hs) {
        return 0;
    }

    /* Are we ignoring RLC frames that were found in MAC frames, or only those
       that were logged separately? */
    if (!s_show_mac && si->loggedInMACFrame) {
        return 0;
    }

    /* Inc top-level frame count */
    hs->total_frames++;

    /* For per-UE data, must create a new row if none already existing */
    if (!hs->ep_list) {
        /* Allocate new list */
        hs->ep_list = alloc_rlc_lte_ep(si, pinfo);
        /* Make it the first/only entry */
        te = hs->ep_list;
    } else {
        /* Look among existing rows for this UEId */
        for (tmp = hs->ep_list;(tmp != NULL); tmp = tmp->next) {
            if (tmp->stats.ueid == si->ueid) {
                te = tmp;
                break;
            }
        }

        /* Not found among existing, so create a new one anyway */
        if (te == NULL) {
            if ((te = alloc_rlc_lte_ep(si, pinfo))) {
                /* Add new item to end of list */
                rlc_lte_ep_t *p = hs->ep_list;
                while (p->next) {
                    p = p->next;
                }
                p->next = te;
                te->next = NULL;
            }
        }
    }

    /* Really should have a row pointer by now */
    if (!te) {
        return 0;
    }

    /* Update entry with details from si */
    te->stats.ueid = si->ueid;

    /* Top-level traffic stats */
    if (si->direction == DIRECTION_UPLINK) {
        te->stats.UL_frames++;
        te->stats.UL_total_bytes += si->pduLength;
    }
    else {
        te->stats.DL_frames++;
        te->stats.DL_total_bytes += si->pduLength;
    }

    /* Find channel struct */
    switch (si->channelType) {
        case CHANNEL_TYPE_CCCH:
            channel_stats = &te->stats.CCCH_stats;
            break;

        case CHANNEL_TYPE_SRB:
            channel_stats = &te->stats.srb_stats[si->channelId-1];
            break;

        case CHANNEL_TYPE_DRB:
            channel_stats = &te->stats.drb_stats[si->channelId-1];
            break;

        case CHANNEL_TYPE_BCCH:
        case CHANNEL_TYPE_PCCH:
            /* TODO: count these common channels separately? */
            break;
    }

    if (channel_stats != NULL) {
        channel_stats->inUse = TRUE;
        channel_stats->iter_valid = FALSE;
        channel_stats->rlcMode = si->rlcMode;
        channel_stats->channelType = si->channelType;
        channel_stats->channelId = si->channelId;
    }

    if (si->direction == DIRECTION_UPLINK) {
        channel_stats->UL_frames++;
        channel_stats->UL_bytes += si->pduLength;
        channel_stats->UL_nacks += si->noOfNACKs;
        if (si->isControlPDU) {
            channel_stats->UL_acks++;
        }
    }
    else {
        channel_stats->DL_frames++;
        channel_stats->DL_bytes += si->pduLength;
        channel_stats->DL_nacks += si->noOfNACKs;
        if (si->isControlPDU) {
            channel_stats->DL_acks++;
        }
    }

    return 1;
}


/* The channels for any UE would need to be re-added to the list */
static void invalidate_channel_iters(rlc_lte_stat_t *hs)
{
    gint n;
    rlc_lte_ep_t *ep = hs->ep_list;

    while (ep) {
        ep->stats.CCCH_stats.iter_valid = FALSE;
        for (n=0; n < 2; n++) {
            ep->stats.srb_stats[n].iter_valid = FALSE;
        }
        for (n=0; n < 32; n++) {
            ep->stats.drb_stats[n].iter_valid = FALSE;
        }

        ep = ep->next;
    }
}


/* Draw the channels table according to the current UE selection */
static void
rlc_lte_channels(rlc_lte_ep_t *rlc_stat_ep, rlc_lte_stat_t *hs)
{
    GtkListStore *channels_store = GTK_LIST_STORE(gtk_tree_view_get_model(hs->channel_table));
    rlc_channel_stats *channel_stats;
    char buff[32];
    int n;

    /* Clear any existing rows */
    gtk_list_store_clear(channels_store);
    invalidate_channel_iters(hs);

    if (rlc_stat_ep == NULL) {
        return;
    }

    /* Add one row for each channel */

    /* CCCH */
    channel_stats = &rlc_stat_ep->stats.CCCH_stats;
    if (channel_stats->inUse) {

        if (!channel_stats->iter_valid) {
            /* Add to list control if not drawn this UE before */
            gtk_list_store_append(channels_store, &channel_stats->iter);
            channel_stats->iter_valid = TRUE;
        }

        /* Set each column for this row */
        gtk_list_store_set(channels_store, &channel_stats->iter,
                           CHANNEL_NAME, "CCCH",
                           CHANNEL_MODE, print_rlc_channel_mode(channel_stats->rlcMode),
                           CHANNEL_UL_FRAMES, channel_stats->UL_frames,
                           CHANNEL_UL_BYTES, channel_stats->UL_bytes,
                           CHANNEL_DL_FRAMES, channel_stats->DL_frames,
                           CHANNEL_DL_BYTES, channel_stats->DL_bytes,
                           CHANNEL_TABLE_COLUMN, channel_stats,
                           -1);
    }


    /* SRB */
    for (n=0; n < 2; n++) {
        channel_stats = &rlc_stat_ep->stats.srb_stats[n];
        if (channel_stats->inUse) {

            if (!channel_stats->iter_valid) {
                /* Add to list control if not drawn this UE before */
                gtk_list_store_append(channels_store, &channel_stats->iter);
                channel_stats->iter_valid = TRUE;
            }

            g_snprintf(buff, 32, "SRB-%u", n+1);

            /* Set each column for this row */
            gtk_list_store_set(channels_store, &channel_stats->iter,
                               CHANNEL_NAME, buff,
                               CHANNEL_MODE, print_rlc_channel_mode(channel_stats->rlcMode),
                               CHANNEL_UL_FRAMES, channel_stats->UL_frames,
                               CHANNEL_UL_BYTES, channel_stats->UL_bytes,
                               CHANNEL_UL_ACKS, channel_stats->UL_acks,
                               CHANNEL_UL_NACKS, channel_stats->UL_nacks,
                               CHANNEL_DL_FRAMES, channel_stats->DL_frames,
                               CHANNEL_DL_BYTES, channel_stats->DL_bytes,
                               CHANNEL_DL_ACKS, channel_stats->DL_acks,
                               CHANNEL_DL_NACKS, channel_stats->DL_nacks,
                               CHANNEL_TABLE_COLUMN, channel_stats,
                               -1);
        }
    }


    /* DRB */
    for (n=0; n < 32; n++) {
        channel_stats = &rlc_stat_ep->stats.drb_stats[n];
        if (channel_stats->inUse) {

            if (!channel_stats->iter_valid) {
                /* Add to list control if not drawn this UE before */
                gtk_list_store_append(channels_store, &channel_stats->iter);
                channel_stats->iter_valid = TRUE;
            }

            g_snprintf(buff, 32, "DRB-%u", n+1);

            /* Set each column for this row */
            gtk_list_store_set(channels_store, &channel_stats->iter,
                               CHANNEL_NAME, buff,
                               CHANNEL_MODE, print_rlc_channel_mode(channel_stats->rlcMode),
                               CHANNEL_UL_FRAMES, channel_stats->UL_frames,
                               CHANNEL_UL_BYTES, channel_stats->UL_bytes,
                               CHANNEL_UL_ACKS, channel_stats->UL_acks,
                               CHANNEL_UL_NACKS, channel_stats->UL_nacks,
                               CHANNEL_DL_FRAMES, channel_stats->DL_frames,
                               CHANNEL_DL_BYTES, channel_stats->DL_bytes,
                               CHANNEL_DL_ACKS, channel_stats->DL_acks,
                               CHANNEL_DL_NACKS, channel_stats->DL_nacks,
                               CHANNEL_TABLE_COLUMN, channel_stats,
                               -1);
        }
    }
}



/* (Re)draw the whole dialog window */
static void
rlc_lte_stat_draw(void *phs)
{
    guint16 number_of_ues = 0;
    gchar title[256];

    /* Look up the statistics window */
    rlc_lte_stat_t *hs = (rlc_lte_stat_t *)phs;
    rlc_lte_ep_t* list = hs->ep_list, *tmp = 0;

    GtkListStore *ues_store;
    GtkTreeSelection *sel;
    GtkTreeModel *model;
    GtkTreeIter iter;


    /* Per-UE table entries */
    ues_store = GTK_LIST_STORE(gtk_tree_view_get_model(hs->ue_table));

    /* Set title that shows how many UEs currently in table */
    for (tmp = list; (tmp!=NULL); tmp=tmp->next, number_of_ues++);
    g_snprintf(title, sizeof(title), "%u UEs", number_of_ues);
    gtk_frame_set_label(GTK_FRAME(rlc_lte_stat_ues_lb), title);

    /* Update title to include number of UEs and frames */
    g_snprintf(title, sizeof(title), "Wireshark: LTE RLC Traffic Statistics: %s (%u UEs, %u frames)",
               cf_get_display_name(&cfile),
               number_of_ues,
               hs->total_frames);
    gtk_window_set_title(GTK_WINDOW(rlc_lte_stat_dlg_w), title);


    /* For each row/UE in the model */
    for (tmp = list; tmp; tmp=tmp->next) {
        if (tmp->iter_valid != TRUE) {
            /* Add to list control if not drawn this UE before */
            gtk_list_store_append(ues_store, &tmp->iter);
            tmp->iter_valid = TRUE;
        }

        /* Set each column for this row */
        gtk_list_store_set(ues_store, &tmp->iter,
                           UEID_COLUMN, tmp->stats.ueid,
                           UL_FRAMES_COLUMN, tmp->stats.UL_frames,
                           UL_BYTES_COLUMN, tmp->stats.UL_total_bytes,
                           DL_FRAMES_COLUMN, tmp->stats.DL_frames,
                           DL_BYTES_COLUMN, tmp->stats.DL_total_bytes,
                           TABLE_COLUMN, tmp,
                           -1);
    }

    /* If there is a UE selected, update its counters in details window */
    sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(hs->ue_table));
    if (gtk_tree_selection_get_selected(sel, &model, &iter)) {
        rlc_lte_ep_t *ep;

        gtk_tree_model_get(model, &iter, TABLE_COLUMN, &ep, -1);
        rlc_lte_channels(ep, hs);
    }
}


/* What to do when a UE list item is selected/unselected */
static void rlc_lte_select_ue_cb(GtkTreeSelection *sel, gpointer data)
{
    rlc_lte_ep_t   *ep;
    GtkTreeModel   *model;
    GtkTreeIter    iter;

    if (gtk_tree_selection_get_selected(sel, &model, &iter)) {
        /* Show details of selected UE */
        gtk_tree_model_get(model, &iter, TABLE_COLUMN, &ep, -1);
        rlc_lte_channels(ep, (rlc_lte_stat_t*)data);
    }
    else {
        rlc_lte_channels(NULL, (rlc_lte_stat_t*)data);
    }

    /* Channel will be deselected */
    enable_filter_buttons(FALSE);
}


/* What to do when a channel list item is selected/unselected */
static void rlc_lte_select_channel_cb(GtkTreeSelection *sel, gpointer data _U_)
{
    rlc_lte_ep_t   *ep;
    GtkTreeModel   *model;
    GtkTreeIter    iter;

    if (gtk_tree_selection_get_selected(sel, &model, &iter)) {
        /* Enable buttons */
        enable_filter_buttons(TRUE);

        /* Show details of selected UE */
        gtk_tree_model_get(model, &iter, TABLE_COLUMN, &ep, -1);
    }
    else {
        /* Disable buttons */
        enable_filter_buttons(FALSE);
    }
}


/* Destroy the stats window */
static void win_destroy_cb(GtkWindow *win _U_, gpointer data)
{
    rlc_lte_stat_t *hs = (rlc_lte_stat_t *)data;

    protect_thread_critical_region();
    remove_tap_listener(hs);
    unprotect_thread_critical_region();

    if (rlc_lte_stat_dlg_w != NULL) {
        window_destroy(rlc_lte_stat_dlg_w);
        rlc_lte_stat_dlg_w = NULL;
    }
    rlc_lte_stat_reset(hs);
    g_free(hs);
}



static void
toggle_show_mac(GtkWidget *widget, gpointer data _U_)
{
    /* Read state */
    s_show_mac = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON (widget));

    /* Retap */
    cf_retap_packets(&cfile);
}


/* Check that a UE / channel is currently selected.  If so, fill in out
   parameters with details of channel.
   Return TRUE if a channel is selected */
static int get_channel_selection(rlc_lte_stat_t *hs,
                                 guint16 *ueid, guint8 *rlcMode,
                                 guint16 *channelType, guint16 *channelId)
{
    GtkTreeModel *model;
    GtkTreeIter iter;

    /* Check UE selection */
    GtkTreeSelection *sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(hs->ue_table));
    if (gtk_tree_selection_get_selected(sel, &model, &iter)) {
        rlc_lte_ep_t *ep;

        gtk_tree_model_get(model, &iter, TABLE_COLUMN, &ep, -1);
        *ueid = ep->stats.ueid;

        /* Check channel selection */
        sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(hs->channel_table));
        if (gtk_tree_selection_get_selected(sel, &model, &iter)) {
            /* Find details of selected channel */
            rlc_channel_stats *channel_stats;
            gtk_tree_model_get(model, &iter, CHANNEL_TABLE_COLUMN, &channel_stats, -1);
            *rlcMode = channel_stats->rlcMode;
            *channelType = channel_stats->channelType;
            *channelId = channel_stats->channelId;
        }
        else {
            return FALSE;
        }
    }
    else {
        return FALSE;
    }

    return TRUE;
}


/* Build and set a display filter to match the given channel settings */
typedef enum ChannelDirection_t {UL_Only, DL_Only, UL_and_DL} ChannelDirection_t;
static void set_channel_filter_expression(guint16  ueid,
                                          guint8   rlcMode,
                                          guint16  channelType,
                                          guint16  channelId,
                                          ChannelDirection_t channelDirection)
{
    static char buffer[256];
    int offset = 0;

    /* Should we exclude MAC frames? */
    if (!s_show_mac) {
        offset += g_snprintf(buffer+offset, 256-offset, "not mac-lte and ");
    }

    /* UEId */
    offset += g_snprintf(buffer+offset, 256-offset, "(rlc-lte.ueid == %u) and ", ueid);
    offset += g_snprintf(buffer+offset, 256-offset, "(rlc-lte.channel-type == %u)", channelType);

    /* Channel-id for srb/drb */
    if ((channelType == CHANNEL_TYPE_SRB) || (channelType == CHANNEL_TYPE_DRB)) {
        offset += g_snprintf(buffer+offset, 256-offset, " and (rlc-lte.channel-id == %u)", channelId);
    }

    /* Direction (also depends upon RLC mode) */
    switch (channelDirection) {
        case UL_Only:
            if (rlcMode == RLC_AM_MODE) {
                offset += g_snprintf(buffer+offset, 256-offset,
                                     " and (rlc-lte.direction == 0 and rlc-lte.am.frame_type == 1) or "
                                          "(rlc-lte.direction == 1 and rlc-lte.am.frame_type == 0)");
            }
            else {
                offset += g_snprintf(buffer+offset, 256-offset, " and (rlc-lte.direction == 0)");
            }
            break;
        case DL_Only:
            if (rlcMode == RLC_AM_MODE) {
                offset += g_snprintf(buffer+offset, 256-offset,
                                     " and (rlc-lte.direction == 1 and rlc-lte.am.frame_type == 1) or "
                                          "(rlc-lte.direction == 0 and rlc-lte.am.frame_type == 0)");
            }
            else {
                offset += g_snprintf(buffer+offset, 256-offset, " and (rlc-lte.direction == 1)");
            }
            break;

        default:
            break;
    }

    /* Set its value to our new string */
    gtk_entry_set_text(GTK_ENTRY(main_display_filter_widget), buffer);

    /* Run the filter */
    main_filter_packets(&cfile, buffer, TRUE);
}

/* Respond to UL filter button being clicked by building and using filter */
static void ul_filter_clicked(GtkWindow *win _U_, rlc_lte_stat_t* hs)
{
    guint16  ueid;
    guint8   rlcMode;
    guint16  channelType;
    guint16  channelId;

    if (!get_channel_selection(hs, &ueid, &rlcMode, &channelType, &channelId)) {
        return;
    }

    set_channel_filter_expression(ueid, rlcMode, channelType, channelId, UL_Only);
}

/* Respond to DL filter button being clicked by building and using filter */
static void dl_filter_clicked(GtkWindow *win _U_, rlc_lte_stat_t* hs)
{
    guint16  ueid;
    guint8   rlcMode;
    guint16  channelType;
    guint16  channelId;

    if (!get_channel_selection(hs, &ueid, &rlcMode, &channelType, &channelId)) {
        return;
    }

    set_channel_filter_expression(ueid, rlcMode, channelType, channelId, DL_Only);
}

/* Respond to UL/DL filter button being clicked by building and using filter */
static void uldl_filter_clicked(GtkWindow *win _U_, rlc_lte_stat_t* hs)
{
    guint16  ueid;
    guint8   rlcMode;
    guint16  channelType;
    guint16  channelId;

    if (!get_channel_selection(hs, &ueid, &rlcMode, &channelType, &channelId)) {
        return;
    }

    set_channel_filter_expression(ueid, rlcMode, channelType, channelId, UL_and_DL);
}


/* Create a new RLC LTE stats dialog */
static void rlc_lte_stat_dlg_create(void)
{
    rlc_lte_stat_t    *hs;
    GString           *error_string;
    GtkWidget         *ues_scrolled_window;
    GtkWidget         *channels_scrolled_window;
    GtkWidget         *bbox;
    GtkWidget         *top_level_vbox;

    GtkWidget         *show_mac_cb;
    GtkWidget         *ues_vb;
    GtkWidget         *channels_vb;
    GtkWidget         *filter_buttons_hb;

    GtkWidget         *close_bt;
    GtkWidget         *help_bt;

    GtkListStore      *store;

    GtkTreeView       *tree_view;
    GtkCellRenderer   *renderer;
    GtkTreeViewColumn *column;
    GtkTreeSelection  *sel;
    gchar title[256];
    gint i;

    /* Create dialog */
    hs = g_malloc(sizeof(rlc_lte_stat_t));
    hs->ep_list = NULL;

    /* Set title */
    g_snprintf(title, sizeof(title), "Wireshark: LTE RLC Statistics: %s",
               cf_get_display_name(&cfile));
    rlc_lte_stat_dlg_w = window_new_with_geom(GTK_WINDOW_TOPLEVEL, title, "LTE RLC Statistics");

    /* Window size */
    gtk_window_set_default_size(GTK_WINDOW(rlc_lte_stat_dlg_w), 750, 300);

    /* Will stack widgets vertically inside dlg */
    top_level_vbox = gtk_vbox_new(FALSE, 3);       /* FALSE = not homogeneous */
    gtk_container_add(GTK_CONTAINER(rlc_lte_stat_dlg_w), top_level_vbox);

    gtk_container_set_border_width(GTK_CONTAINER(top_level_vbox), 6);
    gtk_widget_show(top_level_vbox);

    /**********************************************/
    /* Exclude-MAC checkbox                       */
    show_mac_cb = gtk_check_button_new_with_mnemonic("Show RLC PDUs found inside logged MAC frames");
    gtk_container_add(GTK_CONTAINER(top_level_vbox), show_mac_cb);
    gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(show_mac_cb), FALSE);
    /* TODO: add tooltip */
    g_signal_connect(show_mac_cb, "toggled", G_CALLBACK(toggle_show_mac), hs);


    /**********************************************/
    /* UE List                                    */
    /**********************************************/

    rlc_lte_stat_ues_lb = gtk_frame_new("UE Data (0 UEs)");
    ues_vb = gtk_vbox_new(FALSE, 0);
    gtk_container_add(GTK_CONTAINER(rlc_lte_stat_ues_lb), ues_vb);
    gtk_container_set_border_width(GTK_CONTAINER(ues_vb), 5);

    ues_scrolled_window = scrolled_window_new(NULL, NULL);
    gtk_box_pack_start(GTK_BOX(ues_vb), ues_scrolled_window, TRUE, TRUE, 0);
    gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(ues_scrolled_window),
                                        GTK_SHADOW_IN);

    /* Create the table of UE data */
    store = gtk_list_store_new(NUM_UE_COLUMNS, G_TYPE_INT,
                               G_TYPE_INT, G_TYPE_INT, /* UL */
                               G_TYPE_INT, G_TYPE_INT, /* DL */
                               G_TYPE_POINTER);
    hs->ue_table = GTK_TREE_VIEW(tree_view_new(GTK_TREE_MODEL(store)));
    gtk_container_add(GTK_CONTAINER (ues_scrolled_window), GTK_WIDGET(hs->ue_table));
    g_object_unref(G_OBJECT(store));

    tree_view = hs->ue_table;
    gtk_tree_view_set_headers_visible(tree_view, TRUE);
    gtk_tree_view_set_headers_clickable(tree_view, TRUE);

    /* Create the titles for each column of the per-UE table */
    for (i = 0; i < TABLE_COLUMN; i++) {
        renderer = gtk_cell_renderer_text_new();
        column = gtk_tree_view_column_new_with_attributes(ue_titles[i], renderer,
                                                          "text", i, NULL);
        gtk_tree_view_column_set_sort_column_id(column, i);

        if (i == 0) {
            /* Expand first column (RNTI, which is Key) */
            gtk_tree_view_column_set_expand(column, TRUE);
        } else {
            /* For other columns, set all of the free space to be on the left */
            g_object_set(G_OBJECT(renderer), "xalign", 1.0, NULL);
        }
        gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
        gtk_tree_view_column_set_resizable(column, TRUE);
        gtk_tree_view_append_column(tree_view, column);
    }

    /* Set callback function for selecting a row in the UE table */
    sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(hs->ue_table));
    gtk_tree_selection_set_mode(sel, GTK_SELECTION_SINGLE);
    g_signal_connect(sel, "changed", G_CALLBACK(rlc_lte_select_ue_cb), hs);

    gtk_box_pack_start(GTK_BOX(top_level_vbox), rlc_lte_stat_ues_lb, TRUE, TRUE, 0);


    /**********************************************/
    /* Channels of selected UE                    */
    /**********************************************/
    rlc_lte_stat_channels_lb = gtk_frame_new("Channels of selected UE");

    channels_vb = gtk_vbox_new(FALSE, 6);
    gtk_container_add(GTK_CONTAINER(rlc_lte_stat_channels_lb), channels_vb);
    gtk_container_set_border_width(GTK_CONTAINER(channels_vb), 5);

    channels_scrolled_window = scrolled_window_new(NULL, NULL);
    gtk_box_pack_start(GTK_BOX(channels_vb), channels_scrolled_window, TRUE, TRUE, 0);
    gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(channels_scrolled_window),
                                        GTK_SHADOW_IN);

    /* Create the table of UE data */
    store = gtk_list_store_new(NUM_CHANNEL_COLUMNS,
                               G_TYPE_STRING, G_TYPE_STRING, /* name & type */
                               G_TYPE_INT, G_TYPE_INT, G_TYPE_INT, G_TYPE_INT, /* UL */
                               G_TYPE_INT, G_TYPE_INT, G_TYPE_INT, G_TYPE_INT, /* DL */
                               G_TYPE_POINTER);
    hs->channel_table = GTK_TREE_VIEW(tree_view_new(GTK_TREE_MODEL(store)));
    gtk_container_add(GTK_CONTAINER (channels_scrolled_window), GTK_WIDGET(hs->channel_table));
    g_object_unref(G_OBJECT(store));

    tree_view = hs->channel_table;
    gtk_tree_view_set_headers_visible(tree_view, TRUE);
    gtk_tree_view_set_headers_clickable(tree_view, TRUE);

    /* Create the titles for each column of the per-UE table */
    for (i = 0; i < CHANNEL_TABLE_COLUMN; i++) {
        renderer = gtk_cell_renderer_text_new();
        column = gtk_tree_view_column_new_with_attributes(channel_titles[i], renderer,
                                                          "text", i, NULL);
        gtk_tree_view_column_set_sort_column_id(column, i);

        if (i == 0) {
            /* Expand first column (Type) */
            gtk_tree_view_column_set_expand(column, TRUE);
        } else {
            /* For other columns, set all of the free space to be on the left */
            g_object_set(G_OBJECT(renderer), "xalign", 1.0, NULL);
        }
        gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
        gtk_tree_view_column_set_resizable(column, TRUE);
        gtk_tree_view_append_column(tree_view, column);
    }

    /* Set callback function for selecting a row in the channel table */
    sel = gtk_tree_view_get_selection(GTK_TREE_VIEW(hs->channel_table));
    gtk_tree_selection_set_mode(sel, GTK_SELECTION_SINGLE);
    g_signal_connect(sel, "changed", G_CALLBACK(rlc_lte_select_channel_cb), hs);

    gtk_box_pack_start(GTK_BOX(top_level_vbox), rlc_lte_stat_channels_lb, TRUE, TRUE, 0);


    /**********************************************/
    /* Channel filter buttons                     */
    /**********************************************/

    rlc_lte_stat_filter_buttons_lb = gtk_frame_new("Filter on selected channel");

    filter_buttons_hb = gtk_hbox_new(FALSE, 6);
    gtk_container_add(GTK_CONTAINER(rlc_lte_stat_filter_buttons_lb), filter_buttons_hb);
    gtk_container_set_border_width(GTK_CONTAINER(filter_buttons_hb), 2);


    /* UL button */
    ul_filter_bt = gtk_button_new_with_label("Set UL display filter for this channel");
    gtk_box_pack_start(GTK_BOX(filter_buttons_hb), ul_filter_bt, TRUE, TRUE, 0);
    g_signal_connect(ul_filter_bt, "clicked", G_CALLBACK(ul_filter_clicked), hs);
    gtk_widget_show(ul_filter_bt);

    dl_filter_bt = gtk_button_new_with_label("Set DL display filter for this channel");
    gtk_box_pack_start(GTK_BOX(filter_buttons_hb), dl_filter_bt, TRUE, TRUE, 0);
    g_signal_connect(dl_filter_bt, "clicked", G_CALLBACK(dl_filter_clicked), hs);
    gtk_widget_show(dl_filter_bt);

    uldl_filter_bt = gtk_button_new_with_label("Set UL / DL display filter for this channel");
    gtk_box_pack_start(GTK_BOX(filter_buttons_hb), uldl_filter_bt, TRUE, TRUE, 0);
    g_signal_connect(uldl_filter_bt, "clicked", G_CALLBACK(uldl_filter_clicked), hs);
    gtk_widget_show(uldl_filter_bt);

    gtk_box_pack_start(GTK_BOX(top_level_vbox), rlc_lte_stat_filter_buttons_lb, TRUE, TRUE, 0);

    enable_filter_buttons(FALSE);

    /**********************************************/
    /* Register the tap listener                  */
    /**********************************************/

    error_string = register_tap_listener("rlc-lte", hs, NULL, 0,
                                         rlc_lte_stat_reset,
                                         rlc_lte_stat_packet,
                                         rlc_lte_stat_draw);
    if (error_string) {
        simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "%s", error_string->str);
        g_string_free(error_string, TRUE);
        g_free(hs);
        return;
    }


    /************************************/
    /* Bottom utton row.                */
    /************************************/

    bbox = dlg_button_row_new (GTK_STOCK_CLOSE, GTK_STOCK_HELP, NULL);
    gtk_box_pack_end (GTK_BOX(top_level_vbox), bbox, FALSE, FALSE, 0);

    /* Add the close button */
    close_bt = g_object_get_data(G_OBJECT(bbox), GTK_STOCK_CLOSE);
    window_set_cancel_button(rlc_lte_stat_dlg_w, close_bt, window_cancel_button_cb);

    help_bt = g_object_get_data(G_OBJECT(bbox), GTK_STOCK_HELP);
    g_signal_connect(help_bt, "clicked", G_CALLBACK(topic_cb), (gpointer)HELP_STATS_LTE_RLC_TRAFFIC_DIALOG);

    /* Set callbacks */
    g_signal_connect(rlc_lte_stat_dlg_w, "delete_event", G_CALLBACK(window_delete_event_cb), NULL);
    g_signal_connect(rlc_lte_stat_dlg_w, "destroy", G_CALLBACK(win_destroy_cb), hs);

    /* Show the window */
    gtk_widget_show_all(rlc_lte_stat_dlg_w);
    window_present(rlc_lte_stat_dlg_w);

    /* Retap */
    cf_retap_packets(&cfile);
    gdk_window_raise(rlc_lte_stat_dlg_w->window);
}


/* Show window, creating if necessary */
static void rlc_lte_stat_launch(GtkWidget *w _U_, gpointer data _U_)
{
    if (rlc_lte_stat_dlg_w) {
        reactivate_window(rlc_lte_stat_dlg_w);
    } else {
        rlc_lte_stat_dlg_create();
    }
}

/* Register this tap listener (need void on own so line register function found) */
void
register_tap_listener_rlc_lte_stat(void)
{
    register_stat_menu_item("_LTE RLC...", REGISTER_STAT_GROUP_TELEPHONY,
                            rlc_lte_stat_launch, NULL, NULL, NULL);
}