ui/cli/tap-h225rassrt.c

   1 /* tap_h225rassrt.c
   2  * h225 RAS Service Response Time statistics for wireshark
   3  * Copyright 2003 Lars Roland
   4  *
   5  * $Id$
   6  *
   7  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #include "config.h"
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 #include "epan/packet.h"
  33 #include "epan/packet_info.h"
  34 #include <epan/tap.h>
  35 #include <epan/stat_cmd_args.h>
  36 #include "epan/value_string.h"
  37 #include <epan/dissectors/packet-h225.h>
  38 #include "epan/timestats.h"
  39
  40 /* following values represent the size of their valuestring arrays */
  41 #define NUM_RAS_STATS 7
  42
  43 void register_tap_listener_h225rassrt(void);
  44
  45 static const value_string ras_message_category[] = {
  46   {  0, "Gatekeeper    "},
  47   {  1, "Registration  "},
  48   {  2, "UnRegistration"},
  49   {  3, "Admission     "},
  50   {  4, "Bandwidth     "},
  51   {  5, "Disengage     "},
  52   {  6, "Location      "},
  53   {  0, NULL }
  54 };
  55
  56 typedef enum _ras_type {
  57         RAS_REQUEST,
  58         RAS_CONFIRM,
  59         RAS_REJECT,
  60         RAS_OTHER
  61 }ras_type;
  62
  63 typedef enum _ras_category {
  64         RAS_GATEKEEPER,
  65         RAS_REGISTRATION,
  66         RAS_UNREGISTRATION,
  67         RAS_ADMISSION,
  68         RAS_BANDWIDTH,
  69         RAS_DISENGAGE,
  70         RAS_LOCATION,
  71         RAS_OTHERS
  72 }ras_category;
  73
  74 /* Summary of response-time calculations*/
  75 typedef struct _h225_rtd_t {
  76         guint32 open_req_num;
  77         guint32 disc_rsp_num;
  78         guint32 req_dup_num;
  79         guint32 rsp_dup_num;
  80         timestat_t stats;
  81 } h225_rtd_t;
  82
  83 /* used to keep track of the statistics for an entire program interface */
  84 typedef struct _h225rassrt_t {
  85         char *filter;
  86         h225_rtd_t ras_rtd[NUM_RAS_STATS];
  87 } h225rassrt_t;
  88
  89
  90 static void
  91 h225rassrt_reset(void *phs)
  92 {
  93         h225rassrt_t *hs=(h225rassrt_t *)phs;
  94         int i;
  95
  96         for(i=0;i<NUM_RAS_STATS;i++) {
  97                 hs->ras_rtd[i].stats.num = 0;
  98                 hs->ras_rtd[i].stats.min_num = 0;
  99                 hs->ras_rtd[i].stats.max_num = 0;
 100                 hs->ras_rtd[i].stats.min.secs = 0;
 101                 hs->ras_rtd[i].stats.min.nsecs = 0;
 102                 hs->ras_rtd[i].stats.max.secs = 0;
 103                 hs->ras_rtd[i].stats.max.nsecs = 0;
 104                 hs->ras_rtd[i].stats.tot.secs = 0;
 105                 hs->ras_rtd[i].stats.tot.nsecs = 0;
 106                 hs->ras_rtd[i].open_req_num = 0;
 107                 hs->ras_rtd[i].disc_rsp_num = 0;
 108                 hs->ras_rtd[i].req_dup_num = 0;
 109                 hs->ras_rtd[i].rsp_dup_num = 0;
 110         }
 111
 112 }
 113
 114 static int
 115 h225rassrt_packet(void *phs, packet_info *pinfo _U_, epan_dissect_t *edt _U_, const void *phi)
 116 {
 117         h225rassrt_t *hs=(h225rassrt_t *)phs;
 118         const h225_packet_info *pi=(const h225_packet_info *)phi;
 119
 120         ras_type rasmsg_type = RAS_OTHER;
 121         ras_category rascategory = RAS_OTHERS;
 122
 123         if (pi->msg_type != H225_RAS || pi->msg_tag == -1) {
 124                 /* No RAS Message or uninitialized msg_tag -> return */
 125                 return 0;
 126         }
 127
 128         if (pi->msg_tag < 21) {
 129                 /* */
 130                 rascategory = (ras_category)(pi->msg_tag / 3);
 131                 rasmsg_type = (ras_type)(pi->msg_tag % 3);
 132         }
 133         else {
 134                 /* No SRT yet (ToDo) */
 135                 return 0;
 136         }
 137
 138         switch(rasmsg_type) {
 139
 140         case RAS_REQUEST:
 141                 if(pi->is_duplicate){
 142                         hs->ras_rtd[rascategory].req_dup_num++;
 143                 }
 144                 else {
 145                         hs->ras_rtd[rascategory].open_req_num++;
 146                 }
 147                 break;
 148
 149         case RAS_CONFIRM:
 150                 /* no break - delay calculation is identical for Confirm and Reject  */
 151         case RAS_REJECT:
 152                 if(pi->is_duplicate){
 153                         /* Duplicate is ignored */
 154                         hs->ras_rtd[rascategory].rsp_dup_num++;
 155                 }
 156                 else if (!pi->request_available) {
 157                         /* no request was seen, ignore response  */
 158                         hs->ras_rtd[rascategory].disc_rsp_num++;
 159                 }
 160                 else {
 161                         hs->ras_rtd[rascategory].open_req_num--;
 162                         time_stat_update(&(hs->ras_rtd[rascategory].stats),&(pi->delta_time), pinfo);
 163                 }
 164                 break;
 165
 166         default:
 167                 return 0;
 168         }
 169         return 1;
 170 }
 171
 172 static void
 173 h225rassrt_draw(void *phs)
 174 {
 175         h225rassrt_t *hs=(h225rassrt_t *)phs;
 176         int i;
 177         timestat_t *rtd_temp;
 178
 179         printf("======================================== H225 RAS Service Response Time ========================================\n");
 180         printf("H225 RAS Service Response Time (SRT) Statistics:\n");
 181         printf("RAS-Messages   | Measurements |     Min SRT    |     Max SRT    |     Avg SRT    | Min in Frame | Max in Frame |\n");
 182         for(i=0;i<NUM_RAS_STATS;i++) {
 183                 rtd_temp = &(hs->ras_rtd[i].stats);
 184                 if(rtd_temp->num){
 185                         printf("%s | %10u   | %9.2f msec | %9.2f msec | %9.2f msec |  %10u  |  %10u  |\n",
 186                                 val_to_str(i,ras_message_category,"Unknown       "),rtd_temp->num,
 187                                 nstime_to_msec(&(rtd_temp->min)), nstime_to_msec(&(rtd_temp->max)),
 188                                 get_average(&(rtd_temp->tot), rtd_temp->num),
 189                                 rtd_temp->min_num, rtd_temp->max_num
 190                         );
 191                 }
 192         }
 193         printf("================================================================================================================\n");
 194         printf("RAS-Messages   |   Open REQ   |  Discarded RSP  |   Repeated REQ  |   Repeated RSP  |\n");
 195         for(i=0;i<NUM_RAS_STATS;i++) {
 196                 rtd_temp = &(hs->ras_rtd[i].stats);
 197                 if(rtd_temp->num){
 198                         printf("%s | %10u   |    %10u   |    %10u   |    %10u   |\n",
 199                                 val_to_str(i,ras_message_category,"Unknown       "),
 200                                 hs->ras_rtd[i].open_req_num, hs->ras_rtd[i].disc_rsp_num,
 201                                 hs->ras_rtd[i].req_dup_num, hs->ras_rtd[i].rsp_dup_num
 202                         );
 203                 }
 204         }
 205         printf("================================================================================================================\n");
 206
 207 }
 208
 209
 210 static void
 211 h225rassrt_init(const char *opt_arg, void* userdata _U_)
 212 {
 213         h225rassrt_t *hs;
 214         GString *error_string;
 215
 216         hs = g_new(h225rassrt_t,1);
 217         if(!strncmp(opt_arg,"h225,srt,",9)){
 218                 hs->filter=g_strdup(opt_arg+9);
 219         } else {
 220                 hs->filter=NULL;
 221         }
 222
 223         h225rassrt_reset(hs);
 224
 225         error_string=register_tap_listener("h225", hs, hs->filter, 0, NULL, h225rassrt_packet, h225rassrt_draw);
 226         if(error_string){
 227                 /* error, we failed to attach to the tap. clean up */
 228                 g_free(hs->filter);
 229                 g_free(hs);
 230
 231                 fprintf(stderr, "tshark: Couldn't register h225,srt tap: %s\n",
 232                     error_string->str);
 233                 g_string_free(error_string, TRUE);
 234                 exit(1);
 235         }
 236 }
 237
 238
 239 void
 240 register_tap_listener_h225rassrt(void)
 241 {
 242         register_stat_cmd_arg("h225,srt", h225rassrt_init,NULL);
 243 }