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tap-afpstat.c

/* tap-afpstat.c
 * Based on
 * smbstat   2003 Ronnie Sahlberg
 *
 * $Id: tap-afpstat.c 28645 2009-06-05 22:42:47Z guy $
 *
 * 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/tap.h>
#include <epan/stat_cmd_args.h>
#include <epan/value_string.h>
#include <epan/dissectors/packet-afp.h>
#include "register.h"
#include "timestats.h"

/* used to keep track of the statistics for an entire program interface */
typedef struct _afpstat_t {
      char *filter;
      timestat_t proc[256];
} afpstat_t;

static int
afpstat_packet(void *pss, packet_info *pinfo, epan_dissect_t *edt _U_, const void *prv)
{
      afpstat_t *ss=(afpstat_t *)pss;
      const afp_request_val *request_val=prv;
      nstime_t t, deltat;
      timestat_t *sp=NULL;

      /* if we havnt seen the request, just ignore it */
      if(!request_val){
            return 0;
      }

      sp=&(ss->proc[request_val->command]);

      /* calculate time delta between request and reply */
      t=pinfo->fd->abs_ts;
      nstime_delta(&deltat, &t, &request_val->req_time);

      if(sp){
            time_stat_update(sp,&deltat, pinfo);
      }

      return 1;
}

static void
afpstat_draw(void *pss)
{
      afpstat_t *ss=(afpstat_t *)pss;
      guint32 i;
      guint64 td;
      printf("\n");
      printf("===================================================================\n");
      printf("AFP RTT Statistics:\n");
      printf("Filter: %s\n",ss->filter?ss->filter:"");
      printf("Commands                   Calls   Min RTT   Max RTT   Avg RTT\n");
      for(i=0;i<256;i++){
            /* nothing seen, nothing to do */
            if(ss->proc[i].num==0){
                  continue;
            }

            /* scale it to units of 10us.*/
            td=ss->proc[i].tot.secs;
            td=td*100000+(int)ss->proc[i].tot.nsecs/10000;
            if(ss->proc[i].num){
                  td/=ss->proc[i].num;
            } else {
                  td=0;
            }

            printf("%-25s %6d %3d.%05d %3d.%05d %3" G_GINT64_MODIFIER "u.%05" G_GINT64_MODIFIER "u\n",
                  val_to_str(i, CommandCode_vals, "Unknown (%u)"),
                  ss->proc[i].num,
                  (int)ss->proc[i].min.secs,ss->proc[i].min.nsecs/10000,
                  (int)ss->proc[i].max.secs,ss->proc[i].max.nsecs/10000,
                  td/100000, td%100000
            );
      }
      printf("===================================================================\n");
}


static void
afpstat_init(const char *optarg, void* userdata _U_)
{
      afpstat_t *ss;
      guint32 i;
      const char *filter=NULL;
      GString *error_string;

      if(!strncmp(optarg,"afp,rtt,",8)){
            filter=optarg+8;
      } else {
            filter=NULL;
      }

      ss=g_malloc(sizeof(afpstat_t));
      if(filter){
            ss->filter=g_strdup(filter);
      } else {
            ss->filter=NULL;
      }

      for(i=0;i<256;i++){
            ss->proc[i].num=0;
            ss->proc[i].min_num=0;
            ss->proc[i].max_num=0;
            ss->proc[i].min.secs=0;
            ss->proc[i].min.nsecs=0;
            ss->proc[i].max.secs=0;
            ss->proc[i].max.nsecs=0;
            ss->proc[i].tot.secs=0;
            ss->proc[i].tot.nsecs=0;
      }

      error_string=register_tap_listener("afp", ss, filter, 0, NULL, afpstat_packet, afpstat_draw);
      if(error_string){
            /* error, we failed to attach to the tap. clean up */
            g_free(ss->filter);
            g_free(ss);

            fprintf(stderr, "tshark: Couldn't register afp,rtt tap: %s\n",
                error_string->str);
            g_string_free(error_string, TRUE);
            exit(1);
      }
}

void
register_tap_listener_afpstat(void)
{
      register_stat_cmd_arg("afp,rtt", afpstat_init,NULL);
}

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