forked from osmocom/wireshark
259 lines
7.7 KiB
C
259 lines
7.7 KiB
C
/* tap_camelsrt.c
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* CAMEL Service Response Time statistics for tshark
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* Copyright 2006 Florent Drouin (based on tap_h225rassrt.c from 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.h"
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#include "epan/packet_info.h"
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#include <epan/tap.h>
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#include "epan/value_string.h"
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#include "register.h"
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#include "epan/asn1.h"
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#include "epan/dissectors/packet-camel.h"
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#include "epan/camel-persistentdata.h"
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#include "timestats.h"
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#include "epan/stat_cmd_args.h"
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#undef MIN
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#define MIN(x,y) ((x) < (y) ? (x) : (y))
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void register_tap_listener_camelsrt(void);
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/* Save the the first NUM_RAS_STATS stats in the array to calculate percentile */
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#define NUM_RAS_STATS 500000
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/* Number of couple message Request/Response to analyze*/
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#define NB_CRITERIA 7
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/* used to keep track of the statistics for an entire program interface */
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struct camelsrt_t {
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char *filter;
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guint32 count[NB_CAMELSRT_CATEGORY];
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timestat_t stats[NB_CAMELSRT_CATEGORY];
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nstime_t delta_time[NB_CAMELSRT_CATEGORY][NUM_RAS_STATS];
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};
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/* Reset the counter */
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static void camelsrt_reset(void *phs)
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{
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struct camelsrt_t *hs=(struct camelsrt_t *)phs;
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memset(hs,0,sizeof(struct camelsrt_t));
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}
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static int camelsrt_packet(void *phs,
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packet_info *pinfo _U_,
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epan_dissect_t *edt _U_,
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const void *phi)
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{
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struct camelsrt_t *hs=(struct camelsrt_t *)phs;
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const struct camelsrt_info_t * pi=phi;
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int i;
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for (i=0; i<NB_CAMELSRT_CATEGORY; i++) {
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if (pi->bool_msginfo[i] &&
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pi->msginfo[i].is_delta_time
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&& pi->msginfo[i].request_available
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&& !pi->msginfo[i].is_duplicate ) {
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time_stat_update(&(hs->stats[i]),
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&(pi->msginfo[i].delta_time),
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pinfo);
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if (hs->count[i] < NUM_RAS_STATS) {
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hs->delta_time[i][hs->count[i]++]
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= pi->msginfo[i].delta_time;
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}
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}
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}
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return 1;
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}
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static void camelsrt_draw(void *phs)
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{
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struct camelsrt_t *hs=(struct camelsrt_t *)phs;
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guint j,z;
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guint32 li;
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int somme,iteration=0;
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timestat_t *rtd_temp;
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double x,delay,delay_max,delay_min,delta;
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double criteria[NB_CRITERIA]={ 5.0, 10.0, 75.0, 90.0, 95.0,99.0,99.90 };
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double delay_criteria[NB_CRITERIA];
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printf("\n");
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printf("Camel Service Response Time (SRT) Statistics:\n");
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printf("=================================================================================================\n");
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printf("| Category | Measure | Min SRT | Max SRT | Avg SRT | Min frame | Max frame |\n");
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printf("|-------------------------|---------|-----------|-----------|-----------|-----------|-----------|\n");
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j=1;
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printf("|%24s |%8u |%8.2f s |%8.2f s |%8.2f s |%10u |%10u |\n",
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val_to_str(j,camelSRTtype_naming,"Unknown Message 0x%02x"),
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hs->stats[j].num,
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nstime_to_sec(&(hs->stats[j].min)),
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nstime_to_sec(&(hs->stats[j].max)),
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get_average(&(hs->stats[j].tot),hs->stats[j].num)/1000.0,
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hs->stats[j].min_num,
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hs->stats[j].max_num
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);
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for(j=2; j<NB_CAMELSRT_CATEGORY; j++) {
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if(hs->stats[j].num==0){
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printf("|%24s |%8u |%8.2f ms|%8.2f ms|%8.2f ms|%10u |%10u |\n",
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val_to_str(j,camelSRTtype_naming,"Unknown Message 0x%02x"),
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0, 0.0, 0.0, 0.0, 0, 0);
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continue;
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}
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printf("|%24s |%8u |%8.2f ms|%8.2f ms|%8.2f ms|%10u |%10u |\n",
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val_to_str(j,camelSRTtype_naming,"Unknown Message 0x%02x"),
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hs->stats[j].num,
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MIN(9999,nstime_to_msec(&(hs->stats[j].min))),
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MIN(9999,nstime_to_msec(&(hs->stats[j].max))),
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MIN(9999,get_average(&(hs->stats[j].tot),hs->stats[j].num)),
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hs->stats[j].min_num,
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hs->stats[j].max_num
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);
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} /* j category */
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printf("=================================================================================================\n");
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/*
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* Display 95%
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*/
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printf("| Category/Criteria |");
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for(z=0; z<NB_CRITERIA; z++) printf("%7.2f%% |", criteria[z]);
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printf("\n");
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printf("|-------------------------|");
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for(z=0; z<NB_CRITERIA; z++) printf("---------|");
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printf("\n");
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/* calculate the delay max to have a given number of messages (in percentage) */
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for(j=2;j<NB_CAMELSRT_CATEGORY;j++) {
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rtd_temp = &(hs->stats[j]);
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if (hs->count[j]>0) {
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/* Calculate the delay to answer to p% of the MS */
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for(z=0; z<NB_CRITERIA; z++) {
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iteration=0;
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delay_max=(double)rtd_temp->max.secs*1000 +(double)rtd_temp->max.nsecs/1000000;
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delay_min=(double)rtd_temp->min.secs*1000 +(double)rtd_temp->min.nsecs/1000000;
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delay=delay_min;
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delta=delay_max-delay_min;
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while( (delta > 0.001) && (iteration < 10000) ) {
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somme=0;
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iteration++;
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for(li=0;li<hs->count[j];li++) {
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x=hs->delta_time[j][li].secs*1000
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+ (double)hs->delta_time[j][li].nsecs/1000000;
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if (x <= delay) somme++;
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}
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if ( somme*100 > hs->count[j]*criteria[z] ) { /* trop grand */
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delay_max=delay;
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delay=(delay_max+delay_min)/2;
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delta=delay_max-delay_min;
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} else { /* trop petit */
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delay_min=delay;
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delay=(delay_max+delay_min)/2;
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delta=delay_max-delay_min;
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}
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} /* while */
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delay_criteria[z]=delay;
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} /* z criteria */
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/* Append the result to the table */
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printf("X%24s |", val_to_str(j, camelSRTtype_naming, "Unknown") );
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for(z=0; z<NB_CRITERIA; z++) printf("%8.2f |", MIN(9999,delay_criteria[z]));
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printf("\n");
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} else { /* count */
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printf("X%24s |", val_to_str(j, camelSRTtype_naming, "Unknown") );
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for(z=0; z<NB_CRITERIA; z++) printf("%8.2f |", 0.0);
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printf("\n");
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} /* count */
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}/* j category */
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printf("===========================");
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for(z=0; z<NB_CRITERIA; z++) printf("==========");
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printf("\n");
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}
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static void camelsrt_init(const char *optarg, void* userdata _U_)
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{
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struct camelsrt_t *p_camelsrt;
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GString *error_string;
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p_camelsrt = g_malloc(sizeof(struct camelsrt_t));
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if(!strncmp(optarg,"camel,srt,",9)){
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p_camelsrt->filter=g_strdup(optarg+9);
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} else {
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p_camelsrt->filter=NULL;
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}
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camelsrt_reset(p_camelsrt);
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error_string=register_tap_listener("CAMEL",
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p_camelsrt,
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p_camelsrt->filter,
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0,
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NULL,
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camelsrt_packet,
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camelsrt_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(p_camelsrt->filter);
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g_free(p_camelsrt);
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fprintf(stderr, "tshark: Couldn't register camel,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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* If we are using tshark, we have to display the stats, even if the stats are not persistent
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* As the frame are proceeded in the chronological order, we do not need persistent stats
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* Whereas, with wireshark, it is not possible to have the correct display, if the stats are
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* not saved along the analyze
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*/
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gtcap_StatSRT=TRUE;
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gcamel_StatSRT=TRUE;
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}
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void /* Next line mandatory */
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register_tap_listener_camelsrt(void)
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{
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register_stat_cmd_arg("camel,srt", camelsrt_init, NULL);
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}
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