--- /dev/null
+/* tap-scsistat.c 2010 Chris Costa and Cal Turney
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#include <string.h>
+#include <epan/packet_info.h>
+#include <epan/epan.h>
+#include <epan/stat_cmd_args.h>
+#include <epan/tap.h>
+#include <epan/conversation.h>
+#include <epan/dissectors/packet-scsi.h>
+#include <epan/dissectors/packet-fc.h>
+#include <epan/dissectors/packet-scsi-sbc.h>
+#include <epan/dissectors/packet-scsi-ssc.h>
+#include <epan/dissectors/packet-scsi-smc.h>
+#include <epan/dissectors/packet-scsi-osd.h>
+
+static guint8 scsi_program=0;
+
+/* used to keep track of statistics for a specific procedure */
+typedef struct _scsi_procedure_t {
+ const char *proc;
+ int num;
+ nstime_t min;
+ nstime_t max;
+ nstime_t tot;
+} scsi_procedure_t;
+
+/* used to keep track of the statistics for an entire program interface */
+typedef struct _scsistat_t {
+ guint8 cmdset;
+ char *filter;
+ const value_string *cdbnames;
+ const char *prog;
+#define MAX_PROCEDURES 256
+ scsi_procedure_t *procedures;
+} scsistat_t;
+
+#define NANOSECS_PER_SEC 1000000000
+
+static void
+scsistat_reset(void *prs)
+{
+ scsistat_t *rs=prs;
+ guint32 i;
+
+ for(i=0; i < MAX_PROCEDURES; i++) {
+ rs->procedures[i].num=0;
+ rs->procedures[i].min.secs=0;
+ rs->procedures[i].min.nsecs=0;
+ rs->procedures[i].max.secs=0;
+ rs->procedures[i].max.nsecs=0;
+ rs->procedures[i].tot.secs=0;
+ rs->procedures[i].tot.nsecs=0;
+ }
+}
+
+static int
+scsistat_packet(void *prs, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pri)
+{
+ scsistat_t *rs = prs;
+ const scsi_task_data_t *ri = pri;
+ nstime_t delta;
+ scsi_procedure_t *rp;
+
+ /* we are only interested in response packets */
+ if(ri->type!=SCSI_PDU_TYPE_RSP) {
+ return 0;
+ }
+ /* we are only interested in a specific commandset */
+ if( (!ri->itl) || ((ri->itl->cmdset&SCSI_CMDSET_MASK)!=rs->cmdset) ) {
+ return 0;
+ }
+ /* check that the opcode looks sane */
+ if( (!ri->itlq) || (ri->itlq->scsi_opcode > 255) ) {
+ return 0;
+ }
+
+ rp=&(rs->procedures[ri->itlq->scsi_opcode]);
+
+ /* calculate time delta between request and reply */
+ nstime_delta(&delta, &pinfo->fd->abs_ts, &ri->itlq->fc_time);
+
+ if(rp->num==0) {
+ rp->max.secs=delta.secs;
+ rp->max.nsecs=delta.nsecs;
+ }
+ if(rp->num==0) {
+ rp->min.secs= delta.secs;
+ rp->min.nsecs=delta.nsecs;
+ }
+ if( (delta.secs < rp->min.secs)
+ ||( (delta.secs == rp->min.secs)
+ &&(delta.nsecs < rp->min.nsecs) ) ) {
+ rp->min.secs = delta.secs;
+ rp->min.nsecs= delta.nsecs;
+ }
+ if( (delta.secs > rp->max.secs)
+ ||( (delta.secs == rp->max.secs)
+ &&(delta.nsecs > rp->max.nsecs) ) ) {
+ rp->max.secs = delta.secs;
+ rp->max.nsecs= delta.nsecs;
+ }
+ rp->tot.secs += delta.secs;
+ rp->tot.nsecs += delta.nsecs;
+ if(rp->tot.nsecs > NANOSECS_PER_SEC) {
+ rp->tot.nsecs -= NANOSECS_PER_SEC;
+ rp->tot.secs++;
+ }
+ rp->num++;
+ return 1;
+}
+
+static void
+scsistat_draw(void *prs)
+{
+ scsistat_t *rs=prs;
+ guint32 i;
+ guint64 td;
+
+ printf("\n");
+ printf("===========================================================\n");
+ printf("SCSI %s RTT Statistics:\n", rs->prog);
+ printf("Filter: %s\n", rs->filter?rs->filter:"");
+ printf("Procedure Calls Min RTT Max RTT Avg RTT\n");
+ for(i=0; i < MAX_PROCEDURES; i++) {
+ if(rs->procedures[i].num==0) {
+ continue;
+ }
+ /* scale it to units of 1us.*/
+ td = ((guint64)(rs->procedures[i].tot.secs)) * NANOSECS_PER_SEC + rs->procedures[i].tot.nsecs;
+ td = ((td / rs->procedures[i].num) + 500) / 1000;
+
+ printf("%-19s %6d %3d.%06u %3d.%06u %3d.%06u \n",
+ rs->procedures[i].proc,
+ rs->procedures[i].num,
+ (int)(rs->procedures[i].min.secs),
+ (rs->procedures[i].min.nsecs+500)/1000,
+ (int)(rs->procedures[i].max.secs),
+ (rs->procedures[i].max.nsecs+500)/1000,
+ (int)(td/1000000), (int)(td%1000000)
+ );
+ }
+ printf("===========================================================\n");
+}
+
+static void
+scsistat_init(const char *optarg, void* userdata _U_)
+{
+ scsistat_t *rs;
+ guint32 i;
+ int program, pos;
+ const char *filter=NULL;
+ GString *error_string;
+
+ pos=0;
+ if(sscanf(optarg, "scsi,rtt,%d,%n", &program, &pos)==1) {
+ if(pos) {
+ filter=optarg+pos;
+ } else {
+ filter=NULL;
+ }
+ } else {
+ fprintf(stderr, "tshark: invalid \"-z scsi,rtt,<cmdset>[,<filter>]\" argument\n");
+ exit(1);
+ }
+
+ scsi_program=program;
+ rs=g_malloc(sizeof(scsistat_t));
+ if(filter) {
+ rs->filter=g_strdup(filter);
+ } else {
+ rs->filter=NULL;
+ }
+ rs->cmdset=program;
+
+ switch(program) {
+ case SCSI_DEV_SBC:
+ rs->prog="SBC (disk)";
+ rs->cdbnames=scsi_sbc_vals;
+ break;
+ case SCSI_DEV_SSC:
+ rs->prog="SSC (tape)";
+ rs->cdbnames=scsi_ssc_vals;
+ break;
+ case SCSI_DEV_CDROM:
+ rs->prog="MMC (cd/dvd)";
+ rs->cdbnames=scsi_mmc_vals;
+ break;
+ case SCSI_DEV_SMC:
+ rs->prog="SMC (tape robot)";
+ rs->cdbnames=scsi_smc_vals;
+ break;
+ case SCSI_DEV_OSD:
+ rs->prog="OSD (object based)";
+ rs->cdbnames=scsi_osd_vals;
+ break;
+ default:
+ /* Default to the SBC (disk), since this is what EMC SCSI seem to always be */
+ rs->cmdset=0;
+ rs->prog="SBC (disk)";
+ rs->cdbnames=scsi_sbc_vals;
+ break;
+ }
+ rs->procedures=g_malloc(sizeof(scsi_procedure_t)*MAX_PROCEDURES);
+ for(i=0; i < MAX_PROCEDURES; i++) {
+ rs->procedures[i].proc=val_to_str(i, rs->cdbnames, "Unknown-0x%02x");
+ rs->procedures[i].num=0;
+ rs->procedures[i].min.secs=0;
+ rs->procedures[i].min.nsecs=0;
+ rs->procedures[i].max.secs=0;
+ rs->procedures[i].max.nsecs=0;
+ rs->procedures[i].tot.secs=0;
+ rs->procedures[i].tot.nsecs=0;
+ }
+ error_string=register_tap_listener("scsi", rs, filter, 0, scsistat_reset, scsistat_packet, scsistat_draw);
+ if(error_string) {
+ /* error, we failed to attach to the tap. clean up */
+ g_free(rs->procedures);
+ g_free(rs->filter);
+ g_free(rs);
+
+ fprintf(stderr, "tshark: Couldn't register scsi,rtt tap: %s\n",
+ error_string->str);
+ g_string_free(error_string, TRUE);
+ exit(1);
+ }
+}
+
+void
+register_tap_listener_scsistat(void)
+{
+ register_stat_cmd_arg("scsi,rtt,", scsistat_init, NULL);
+}
+
git.samba.org / obnox / wireshark / wip.git / commitdiff