282 lines
7.4 KiB
C
282 lines
7.4 KiB
C
/* tap-scsistat.c 2010 Chris Costa and Cal Turney
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <stdio.h>
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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_tap_ui.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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#include <epan/dissectors/packet-scsi-mmc.h>
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void register_tap_listener_scsistat(void);
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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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value_string_ext *cdbnames_ext;
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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 = (scsistat_t *)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 = (scsistat_t *)prs;
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const scsi_task_data_t *ri = (const scsi_task_data_t *)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 = (scsistat_t *)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 *opt_arg, 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(opt_arg, "scsi,srt,%d,%n", &program, &pos) == 1) {
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if (pos) {
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filter = opt_arg+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_new(scsistat_t,1);
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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_ext = &scsi_sbc_vals_ext;
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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_ext = &scsi_ssc_vals_ext;
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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_ext = &scsi_mmc_vals_ext;
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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_ext = &scsi_smc_vals_ext;
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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_ext = &scsi_osd_vals_ext;
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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_ext = &scsi_sbc_vals_ext;
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break;
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}
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rs->procedures = g_new(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_ext(i, rs->cdbnames_ext, "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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static stat_tap_ui scsistat_ui = {
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REGISTER_STAT_GROUP_GENERIC,
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NULL,
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"scsi,srt",
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scsistat_init,
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-1,
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0,
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NULL
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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_tap_ui(&scsistat_ui, NULL);
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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