forked from osmocom/wireshark
252 lines
6.4 KiB
C
252 lines
6.4 KiB
C
/* tap_h225rassrt.c
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* h225 RAS Service Response Time statistics for wireshark
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* Copyright 2003 Lars Roland
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#include <string.h>
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#include "epan/packet_info.h"
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#include <epan/tap.h>
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#include <epan/stat_cmd_args.h>
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#include "epan/value_string.h"
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#include "register.h"
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#include <epan/dissectors/packet-h225.h>
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#include "timestats.h"
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/* following values represent the size of their valuestring arrays */
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#define NUM_RAS_STATS 7
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static const value_string ras_message_category[] = {
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{ 0, "Gatekeeper "},
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{ 1, "Registration "},
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{ 2, "UnRegistration"},
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{ 3, "Admission "},
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{ 4, "Bandwidth "},
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{ 5, "Disengage "},
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{ 6, "Location "},
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{ 0, NULL }
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};
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typedef enum _ras_type {
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RAS_REQUEST,
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RAS_CONFIRM,
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RAS_REJECT,
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RAS_OTHER
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}ras_type;
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typedef enum _ras_category {
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RAS_GATEKEEPER,
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RAS_REGISTRATION,
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RAS_UNREGISTRATION,
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RAS_ADMISSION,
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RAS_BANDWIDTH,
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RAS_DISENGAGE,
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RAS_LOCATION,
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RAS_OTHERS
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}ras_category;
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/* Summary of response-time calculations*/
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typedef struct _h225_rtd_t {
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guint32 open_req_num;
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guint32 disc_rsp_num;
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guint32 req_dup_num;
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guint32 rsp_dup_num;
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timestat_t stats;
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} h225_rtd_t;
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/* used to keep track of the statistics for an entire program interface */
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typedef struct _h225rassrt_t {
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char *filter;
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h225_rtd_t ras_rtd[NUM_RAS_STATS];
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} h225rassrt_t;
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static void
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h225rassrt_reset(void *phs)
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{
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h225rassrt_t *hs=(h225rassrt_t *)phs;
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int i;
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for(i=0;i<NUM_RAS_STATS;i++) {
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hs->ras_rtd[i].stats.num = 0;
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hs->ras_rtd[i].stats.min_num = 0;
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hs->ras_rtd[i].stats.max_num = 0;
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hs->ras_rtd[i].stats.min.secs = 0;
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hs->ras_rtd[i].stats.min.nsecs = 0;
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hs->ras_rtd[i].stats.max.secs = 0;
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hs->ras_rtd[i].stats.max.nsecs = 0;
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hs->ras_rtd[i].stats.tot.secs = 0;
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hs->ras_rtd[i].stats.tot.nsecs = 0;
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hs->ras_rtd[i].open_req_num = 0;
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hs->ras_rtd[i].disc_rsp_num = 0;
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hs->ras_rtd[i].req_dup_num = 0;
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hs->ras_rtd[i].rsp_dup_num = 0;
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}
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}
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static int
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h225rassrt_packet(void *phs, packet_info *pinfo _U_, epan_dissect_t *edt _U_, const void *phi)
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{
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h225rassrt_t *hs=(h225rassrt_t *)phs;
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const h225_packet_info *pi=phi;
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ras_type rasmsg_type = RAS_OTHER;
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ras_category rascategory = RAS_OTHERS;
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if (pi->msg_type != H225_RAS || pi->msg_tag == -1) {
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/* No RAS Message or uninitialized msg_tag -> return */
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return 0;
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}
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if (pi->msg_tag < 21) {
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/* */
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rascategory = pi->msg_tag / 3;
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rasmsg_type = pi->msg_tag % 3;
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}
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else {
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/* No SRT yet (ToDo) */
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return 0;
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}
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switch(rasmsg_type) {
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case RAS_REQUEST:
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if(pi->is_duplicate){
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hs->ras_rtd[rascategory].req_dup_num++;
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}
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else {
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hs->ras_rtd[rascategory].open_req_num++;
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}
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break;
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case RAS_CONFIRM:
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/* no break - delay calculation is identical for Confirm and Reject */
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case RAS_REJECT:
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if(pi->is_duplicate){
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/* Duplicate is ignored */
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hs->ras_rtd[rascategory].rsp_dup_num++;
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}
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else if (!pi->request_available) {
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/* no request was seen, ignore response */
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hs->ras_rtd[rascategory].disc_rsp_num++;
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}
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else {
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hs->ras_rtd[rascategory].open_req_num--;
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time_stat_update(&(hs->ras_rtd[rascategory].stats),&(pi->delta_time), pinfo);
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}
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break;
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default:
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return 0;
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break;
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}
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return 1;
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}
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static void
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h225rassrt_draw(void *phs)
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{
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h225rassrt_t *hs=(h225rassrt_t *)phs;
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int i;
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timestat_t *rtd_temp;
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printf("======================================== H225 RAS Service Response Time ========================================\n");
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printf("H225 RAS Service Response Time (SRT) Statistics:\n");
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printf("RAS-Messages | Measurements | Min SRT | Max SRT | Avg SRT | Min in Frame | Max in Frame |\n");
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for(i=0;i<NUM_RAS_STATS;i++) {
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rtd_temp = &(hs->ras_rtd[i].stats);
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if(rtd_temp->num){
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printf("%s | %10u | %9.2f msec | %9.2f msec | %9.2f msec | %10u | %10u |\n",
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val_to_str(i,ras_message_category,"Unknown "),rtd_temp->num,
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nstime_to_msec(&(rtd_temp->min)), nstime_to_msec(&(rtd_temp->max)),
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get_average(&(rtd_temp->tot), rtd_temp->num),
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rtd_temp->min_num, rtd_temp->max_num
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);
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}
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}
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printf("================================================================================================================\n");
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printf("RAS-Messages | Open REQ | Discarded RSP | Repeated REQ | Repeated RSP |\n");
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for(i=0;i<NUM_RAS_STATS;i++) {
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rtd_temp = &(hs->ras_rtd[i].stats);
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if(rtd_temp->num){
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printf("%s | %10u | %10u | %10u | %10u |\n",
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val_to_str(i,ras_message_category,"Unknown "),
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hs->ras_rtd[i].open_req_num, hs->ras_rtd[i].disc_rsp_num,
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hs->ras_rtd[i].req_dup_num, hs->ras_rtd[i].rsp_dup_num
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);
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}
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}
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printf("================================================================================================================\n");
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}
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static void
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h225rassrt_init(const char *optarg, void* userdata _U_)
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{
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h225rassrt_t *hs;
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const char *filter=NULL;
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GString *error_string;
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if(!strncmp(optarg,"h225,srt,",9)){
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filter=optarg+9;
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} else {
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filter="";
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}
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hs = g_malloc(sizeof(h225rassrt_t));
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hs->filter=g_malloc(strlen(filter)+1);
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strcpy(hs->filter, filter);
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h225rassrt_reset(hs);
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error_string=register_tap_listener("h225", hs, filter, NULL, h225rassrt_packet, h225rassrt_draw);
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if(error_string){
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/* error, we failed to attach to the tap. clean up */
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g_free(hs->filter);
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g_free(hs);
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fprintf(stderr, "twireshark: Couldn't register h225,srt tap: %s\n",
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error_string->str);
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g_string_free(error_string, TRUE);
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exit(1);
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}
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}
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void
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register_tap_listener_h225rassrt(void)
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{
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register_stat_cmd_arg("h225,srt", h225rassrt_init,NULL);
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}
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