tap-megaco-common.c

   1 /* megaco_stat.c
   2  * megaco-statistics for Wireshark
   3  * Copyright 2003 Lars Roland
   4  * Copyright 2008 Ericsson AB
   5  * By Balint Reczey <balint.reczey@ericsson.com>
   6  *
   7  * $Id$
   8  *
   9  * Wireshark - Network traffic analyzer
  10  * By Gerald Combs <gerald@wireshark.org>
  11  * Copyright 1998 Gerald Combs
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * as published by the Free Software Foundation; either version 2
  16  * of the License, or (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  26  */
  27
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <string.h>
  33
  34 #include <epan/packet_info.h>
  35 #include <epan/epan.h>
  36 #include <epan/value_string.h>
  37 #include <epan/tap.h>
  38 #include "epan/gcp.h"
  39
  40 #include "../timestats.h"
  41 #include "../file.h"
  42 #include "../globals.h"
  43 #include "../stat_menu.h"
  44
  45 #include "tap-megaco-common.h"
  46
  47 static gboolean
  48 megacostat_is_duplicate_reply(const gcp_cmd_t* cmd)
  49 {
  50         switch (cmd->type) {
  51
  52         GCP_CMD_REPLY_CASE
  53                 {
  54                         gcp_cmd_msg_t *cmd_msg;
  55                         /* cycle through commands to find same command in the transaction */
  56                         for (cmd_msg = cmd->trx->cmds;
  57                              (cmd_msg != NULL) && (cmd_msg->cmd->msg->framenum != cmd->msg->framenum);
  58                              cmd_msg = cmd_msg->next) {
  59                                 if (cmd_msg->cmd->type == cmd->type)
  60                                         return TRUE;
  61                         }
  62
  63                         return FALSE;
  64                 }
  65                 break;
  66         default:
  67                 return FALSE;
  68                 break;
  69         }
  70
  71
  72 }
  73
  74 static gboolean
  75 megacostat_had_request(const gcp_cmd_t* cmd)
  76 {
  77         switch (cmd->type) {
  78
  79         GCP_CMD_REPLY_CASE
  80                 {
  81                         gcp_cmd_msg_t *cmd_msg;
  82                         /* cycle through commands to find a request in the transaction */
  83                         for (cmd_msg = cmd->trx->cmds;
  84                              (cmd_msg != NULL) && (cmd_msg->cmd->msg->framenum != cmd->msg->framenum);
  85                              cmd_msg = cmd_msg->next) {
  86
  87                                 switch (cmd_msg->cmd->type) {
  88
  89                                 GCP_CMD_REQ_CASE
  90                                         return TRUE;
  91                                         break;
  92                                 default:
  93                                         return FALSE;
  94                                         break;
  95                                 }
  96                         }
  97
  98                         return FALSE;
  99                 }
 100                 break;
 101         default:
 102                 return FALSE;
 103                 break;
 104         }
 105 }
 106
 107 int
 108 megacostat_packet(void *pms, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pmi)
 109 {
 110         megacostat_t *ms=(megacostat_t *)pms;
 111         const gcp_cmd_t *mi=(const gcp_cmd_t*)pmi;
 112         nstime_t delta;
 113         int ret = 0;
 114
 115         switch (mi->type) {
 116
 117         GCP_CMD_REQ_CASE
 118                 if(!mi->trx->initial) {
 119                         /* Track Context is probably disabled, we cannot
 120                          * measure service response time */
 121                         return 0;
 122                 }
 123
 124                 else if(mi->trx->initial->framenum != mi->msg->framenum){
 125                         /* Duplicate is ignored */
 126                         ms->req_dup_num++;
 127                 }
 128                 else {
 129                         ms->open_req_num++;
 130                 }
 131                 break;
 132
 133         GCP_CMD_REPLY_CASE
 134                 if(megacostat_is_duplicate_reply(mi)){
 135                         /* Duplicate is ignored */
 136                         ms->rsp_dup_num++;
 137                 }
 138                 else if (!megacostat_had_request(mi)) {
 139                         /* no request was seen */
 140                         ms->disc_rsp_num++;
 141                 }
 142                 else {
 143                         ms->open_req_num--;
 144                         /* calculate time delta between request and response */
 145                         nstime_delta(&delta, &pinfo->fd->abs_ts, &mi->trx->initial->time);
 146
 147                         switch(mi->type) {
 148
 149                         case GCP_CMD_ADD_REPLY:
 150                                 time_stat_update(&(ms->rtd[0]),&delta, pinfo);
 151                                 break;
 152                         case GCP_CMD_MOVE_REPLY:
 153                                 time_stat_update(&(ms->rtd[1]),&delta, pinfo);
 154                                 break;
 155                         case GCP_CMD_MOD_REPLY:
 156                                 time_stat_update(&(ms->rtd[2]),&delta, pinfo);
 157                                 break;
 158                         case GCP_CMD_SUB_REPLY:
 159                                 time_stat_update(&(ms->rtd[3]),&delta, pinfo);
 160                                 break;
 161                         case GCP_CMD_AUDITCAP_REPLY:
 162                                 time_stat_update(&(ms->rtd[4]),&delta, pinfo);
 163                                 break;
 164                         case GCP_CMD_AUDITVAL_REPLY:
 165                                 time_stat_update(&(ms->rtd[5]),&delta, pinfo);
 166                                 break;
 167                         case GCP_CMD_NOTIFY_REPLY:
 168                                 time_stat_update(&(ms->rtd[6]),&delta, pinfo);
 169                                 break;
 170                         case GCP_CMD_SVCCHG_REPLY:
 171                                 time_stat_update(&(ms->rtd[7]),&delta, pinfo);
 172                                 break;
 173                         case GCP_CMD_TOPOLOGY_REPLY:
 174                                 time_stat_update(&(ms->rtd[8]),&delta, pinfo);
 175                                 break;
 176                         case GCP_CMD_REPLY:
 177                                 time_stat_update(&(ms->rtd[9]),&delta, pinfo);
 178                                 break;
 179                         default:
 180                                 time_stat_update(&(ms->rtd[11]),&delta, pinfo);
 181                         }
 182                         time_stat_update(&(ms->rtd[10]),&delta, pinfo);
 183
 184                         ret = 1;
 185                 }
 186                 break;
 187
 188         default:
 189                 break;
 190         }
 191
 192         return ret;
 193 }
 194