diff options
author | Jeff Morriss <jeff.morriss@ulticom.com> | 2010-09-18 01:03:45 +0000 |
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committer | Jeff Morriss <jeff.morriss@ulticom.com> | 2010-09-18 01:03:45 +0000 |
commit | 9d3d2922ea9b120369be76fbc9fec6105cd5c6f9 (patch) | |
tree | e6e06152c0545afd795f73738554d457ba05f88a /tap-scsistat.c | |
parent | 9ac49c557d9b14d0f67189d4baff855b588aa91a (diff) |
From Cal Turney via https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5223 :
I would like to contribute iSCSI SRT tap, 'tap-scsistat.c' for tshark.
The output exactly matches that of the Wireshark's iSCSI(disk) SRT dialog.
From me: a couple of small changes to make it compile without warnings.
svn path=/trunk/; revision=34152
Diffstat (limited to 'tap-scsistat.c')
-rw-r--r-- | tap-scsistat.c | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/tap-scsistat.c b/tap-scsistat.c new file mode 100644 index 0000000000..3b7362dcb6 --- /dev/null +++ b/tap-scsistat.c @@ -0,0 +1,262 @@ +/* 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); +} + |