forked from osmocom/wireshark
265 lines
6.7 KiB
C
265 lines
6.7 KiB
C
/* tap-scsistat.c 2010 Chris Costa and Cal Turney
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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/epan.h>
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#include <epan/stat_cmd_args.h>
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#include <epan/tap.h>
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#include <epan/conversation.h>
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#include <epan/dissectors/packet-scsi.h>
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#include <epan/dissectors/packet-fc.h>
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#include <epan/dissectors/packet-scsi-sbc.h>
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#include <epan/dissectors/packet-scsi-ssc.h>
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#include <epan/dissectors/packet-scsi-smc.h>
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#include <epan/dissectors/packet-scsi-osd.h>
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static guint8 scsi_program=0;
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/* used to keep track of statistics for a specific procedure */
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typedef struct _scsi_procedure_t {
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const char *proc;
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int num;
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nstime_t min;
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nstime_t max;
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nstime_t tot;
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} scsi_procedure_t;
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/* used to keep track of the statistics for an entire program interface */
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typedef struct _scsistat_t {
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guint8 cmdset;
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char *filter;
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const value_string *cdbnames;
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const char *prog;
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#define MAX_PROCEDURES 256
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scsi_procedure_t *procedures;
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} scsistat_t;
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#define NANOSECS_PER_SEC 1000000000
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static void
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scsistat_reset(void *prs)
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{
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scsistat_t *rs=prs;
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guint32 i;
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for(i=0; i < MAX_PROCEDURES; i++) {
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rs->procedures[i].num=0;
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rs->procedures[i].min.secs=0;
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rs->procedures[i].min.nsecs=0;
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rs->procedures[i].max.secs=0;
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rs->procedures[i].max.nsecs=0;
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rs->procedures[i].tot.secs=0;
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rs->procedures[i].tot.nsecs=0;
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}
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}
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static int
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scsistat_packet(void *prs, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pri)
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{
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scsistat_t *rs = prs;
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const scsi_task_data_t *ri = pri;
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nstime_t delta;
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scsi_procedure_t *rp;
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/* we are only interested in response packets */
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if(ri->type!=SCSI_PDU_TYPE_RSP) {
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return 0;
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}
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/* we are only interested in a specific commandset */
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if( (!ri->itl) || ((ri->itl->cmdset&SCSI_CMDSET_MASK)!=rs->cmdset) ) {
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return 0;
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}
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/* check that the opcode looks sane */
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if( (!ri->itlq) || (ri->itlq->scsi_opcode > 255) ) {
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return 0;
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}
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rp=&(rs->procedures[ri->itlq->scsi_opcode]);
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/* calculate time delta between request and reply */
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nstime_delta(&delta, &pinfo->fd->abs_ts, &ri->itlq->fc_time);
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if(rp->num==0) {
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rp->max.secs=delta.secs;
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rp->max.nsecs=delta.nsecs;
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}
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if(rp->num==0) {
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rp->min.secs= delta.secs;
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rp->min.nsecs=delta.nsecs;
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}
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if( (delta.secs < rp->min.secs)
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||( (delta.secs == rp->min.secs)
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&&(delta.nsecs < rp->min.nsecs) ) ) {
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rp->min.secs = delta.secs;
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rp->min.nsecs= delta.nsecs;
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}
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if( (delta.secs > rp->max.secs)
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||( (delta.secs == rp->max.secs)
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&&(delta.nsecs > rp->max.nsecs) ) ) {
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rp->max.secs = delta.secs;
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rp->max.nsecs= delta.nsecs;
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}
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rp->tot.secs += delta.secs;
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rp->tot.nsecs += delta.nsecs;
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if(rp->tot.nsecs > NANOSECS_PER_SEC) {
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rp->tot.nsecs -= NANOSECS_PER_SEC;
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rp->tot.secs++;
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}
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rp->num++;
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return 1;
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}
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static void
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scsistat_draw(void *prs)
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{
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scsistat_t *rs=prs;
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guint32 i;
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guint64 td;
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printf("\n");
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printf("===========================================================\n");
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printf("SCSI %s SRT Statistics:\n", rs->prog);
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printf("Filter: %s\n", rs->filter?rs->filter:"");
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printf("Procedure Calls Min SRT Max SRT Avg SRT\n");
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for(i=0; i < MAX_PROCEDURES; i++) {
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if(rs->procedures[i].num==0) {
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continue;
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}
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/* scale it to units of 1us.*/
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td = ((guint64)(rs->procedures[i].tot.secs)) * NANOSECS_PER_SEC + rs->procedures[i].tot.nsecs;
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td = ((td / rs->procedures[i].num) + 500) / 1000;
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printf("%-19s %6d %3d.%06u %3d.%06u %3d.%06u \n",
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rs->procedures[i].proc,
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rs->procedures[i].num,
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(int)(rs->procedures[i].min.secs),
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(rs->procedures[i].min.nsecs+500)/1000,
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(int)(rs->procedures[i].max.secs),
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(rs->procedures[i].max.nsecs+500)/1000,
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(int)(td/1000000), (int)(td%1000000)
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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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scsistat_init(const char *optarg, void* userdata _U_)
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{
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scsistat_t *rs;
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guint32 i;
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int program, pos;
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const char *filter=NULL;
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GString *error_string;
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pos=0;
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if(sscanf(optarg, "scsi,srt,%d,%n", &program, &pos)==1) {
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if(pos) {
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filter=optarg+pos;
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} else {
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filter=NULL;
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}
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} else {
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fprintf(stderr, "tshark: invalid \"-z scsi,srt,<cmdset>[,<filter>]\" argument\n");
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exit(1);
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}
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scsi_program=program;
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rs=g_malloc(sizeof(scsistat_t));
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if(filter) {
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rs->filter=g_strdup(filter);
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} else {
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rs->filter=NULL;
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}
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rs->cmdset=program;
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switch(program) {
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case SCSI_DEV_SBC:
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rs->prog="SBC (disk)";
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rs->cdbnames=scsi_sbc_vals;
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break;
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case SCSI_DEV_SSC:
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rs->prog="SSC (tape)";
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rs->cdbnames=scsi_ssc_vals;
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break;
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case SCSI_DEV_CDROM:
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rs->prog="MMC (cd/dvd)";
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rs->cdbnames=scsi_mmc_vals;
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break;
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case SCSI_DEV_SMC:
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rs->prog="SMC (tape robot)";
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rs->cdbnames=scsi_smc_vals;
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break;
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case SCSI_DEV_OSD:
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rs->prog="OSD (object based)";
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rs->cdbnames=scsi_osd_vals;
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break;
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default:
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/* Default to the SBC (disk), since this is what EMC SCSI seem to always be */
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rs->cmdset=0;
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rs->prog="SBC (disk)";
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rs->cdbnames=scsi_sbc_vals;
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break;
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}
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rs->procedures=g_malloc(sizeof(scsi_procedure_t)*MAX_PROCEDURES);
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for(i=0; i < MAX_PROCEDURES; i++) {
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rs->procedures[i].proc=val_to_str(i, rs->cdbnames, "Unknown-0x%02x");
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rs->procedures[i].num=0;
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rs->procedures[i].min.secs=0;
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rs->procedures[i].min.nsecs=0;
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rs->procedures[i].max.secs=0;
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rs->procedures[i].max.nsecs=0;
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rs->procedures[i].tot.secs=0;
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rs->procedures[i].tot.nsecs=0;
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}
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error_string=register_tap_listener("scsi", rs, filter, 0, scsistat_reset, scsistat_packet, scsistat_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(rs->procedures);
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g_free(rs->filter);
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g_free(rs);
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fprintf(stderr, "tshark: Couldn't register scsi,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_scsistat(void)
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{
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register_stat_cmd_arg("scsi,srt,", scsistat_init, NULL);
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}
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