tap-rpcprogs.c

   1 /* tap-rpcprogs.c
   2  * rpcstat   2002 Ronnie Sahlberg
   3  *
   4  * $Id$
   5  *
   6  * Wireshark - Network traffic analyzer
   7  * By Gerald Combs <gerald@wireshark.org>
   8  * Copyright 1998 Gerald Combs
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * as published by the Free Software Foundation; either version 2
  13  * of the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  23  */
  24
  25 /* This module provides rpc call/reply SRT statistics to tshark.
  26  * It is only used by tshark and not wireshark
  27  */
  28
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <stdio.h>
  34
  35 #ifdef HAVE_SYS_TYPES_H
  36 # include <sys/types.h>
  37 #endif
  38
  39 #include <string.h>
  40 #include "epan/packet_info.h"
  41 #include <epan/tap.h>
  42 #include <epan/stat_cmd_args.h>
  43 #include <epan/dissectors/packet-rpc.h>
  44
  45 #define MICROSECS_PER_SEC   1000000
  46 #define NANOSECS_PER_SEC    1000000000
  47
  48 /* used to keep track of statistics for a specific program/version */
  49 typedef struct _rpc_program_t {
  50         struct _rpc_program_t *next;
  51         guint32 program;
  52         guint32 version;
  53         int num;
  54         nstime_t min;
  55         nstime_t max;
  56         nstime_t tot;
  57 } rpc_program_t;
  58
  59 static rpc_program_t *prog_list=NULL;
  60 static int already_enabled=0;
  61
  62 static int
  63 rpcprogs_packet(void *dummy1 _U_, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pri)
  64 {
  65         const rpc_call_info_value *ri=pri;
  66         nstime_t delta;
  67         rpc_program_t *rp=NULL;
  68
  69         if(!prog_list){
  70                 /* the list was empty */
  71                 rp=g_malloc(sizeof(rpc_program_t));
  72                 rp->next=NULL;
  73                 rp->program=ri->prog;
  74                 rp->version=ri->vers;
  75                 rp->num=0;
  76                 rp->min.secs=0;
  77                 rp->min.nsecs=0;
  78                 rp->max.secs=0;
  79                 rp->max.nsecs=0;
  80                 rp->tot.secs=0;
  81                 rp->tot.nsecs=0;
  82                 prog_list=rp;
  83         } else if((ri->prog==prog_list->program)
  84                 &&(ri->vers==prog_list->version)){
  85                 rp=prog_list;
  86         } else if( (ri->prog<prog_list->program)
  87                 ||((ri->prog==prog_list->program)&&(ri->vers<prog_list->version))){
  88                 /* we should be first entry in list */
  89                 rp=g_malloc(sizeof(rpc_program_t));
  90                 rp->next=prog_list;
  91                 rp->program=ri->prog;
  92                 rp->version=ri->vers;
  93                 rp->num=0;
  94                 rp->min.secs=0;
  95                 rp->min.nsecs=0;
  96                 rp->max.secs=0;
  97                 rp->max.nsecs=0;
  98                 rp->tot.secs=0;
  99                 rp->tot.nsecs=0;
 100                 prog_list=rp;
 101         } else {
 102                 /* we go somewhere else in the list */
 103                 for(rp=prog_list;rp;rp=rp->next){
 104                         if((rp->next)
 105                         && (rp->next->program==ri->prog)
 106                         && (rp->next->version==ri->vers)){
 107                                 rp=rp->next;
 108                                 break;
 109                         }
 110                         if((!rp->next)
 111                         || (rp->next->program>ri->prog)
 112                         || (  (rp->next->program==ri->prog)
 113                             &&(rp->next->version>ri->vers))){
 114                                 rpc_program_t *trp;
 115                                 trp=g_malloc(sizeof(rpc_program_t));
 116                                 trp->next=rp->next;
 117                                 trp->program=ri->prog;
 118                                 trp->version=ri->vers;
 119                                 trp->num=0;
 120                                 trp->min.secs=0;
 121                                 trp->min.nsecs=0;
 122                                 trp->max.secs=0;
 123                                 trp->max.nsecs=0;
 124                                 trp->tot.secs=0;
 125                                 trp->tot.nsecs=0;
 126                                 rp->next=trp;
 127                                 rp=trp;
 128                                 break;
 129                         }
 130                 }
 131         }
 132
 133
 134         /* we are only interested in reply packets */
 135         if(ri->request || !rp){
 136                 return 0;
 137         }
 138
 139         /* calculate time delta between request and reply */
 140         nstime_delta(&delta, &pinfo->fd->abs_ts, &ri->req_time);
 141
 142         if((rp->max.secs==0)
 143         && (rp->max.nsecs==0) ){
 144                 rp->max.secs=delta.secs;
 145                 rp->max.nsecs=delta.nsecs;
 146         }
 147
 148         if((rp->min.secs==0)
 149         && (rp->min.nsecs==0) ){
 150                 rp->min.secs=delta.secs;
 151                 rp->min.nsecs=delta.nsecs;
 152         }
 153
 154         if( (delta.secs<rp->min.secs)
 155         ||( (delta.secs==rp->min.secs)
 156           &&(delta.nsecs<rp->min.nsecs) ) ){
 157                 rp->min.secs=delta.secs;
 158                 rp->min.nsecs=delta.nsecs;
 159         }
 160
 161         if( (delta.secs>rp->max.secs)
 162         ||( (delta.secs==rp->max.secs)
 163           &&(delta.nsecs>rp->max.nsecs) ) ){
 164                 rp->max.secs=delta.secs;
 165                 rp->max.nsecs=delta.nsecs;
 166         }
 167
 168         rp->tot.secs += delta.secs;
 169         rp->tot.nsecs += delta.nsecs;
 170         if(rp->tot.nsecs > NANOSECS_PER_SEC){
 171                 rp->tot.nsecs -= NANOSECS_PER_SEC;
 172                 rp->tot.secs++;
 173         }
 174         rp->num++;
 175
 176         return 1;
 177 }
 178
 179
 180 static void
 181 rpcprogs_draw(void *dummy _U_)
 182 {
 183         guint64 td;
 184         rpc_program_t *rp;
 185         char str[64];
 186
 187         printf("\n");
 188         printf("==========================================================\n");
 189         printf("ONC-RPC Program Statistics:\n");
 190         printf("Program    Version  Calls    Min SRT    Max SRT    Avg SRT\n");
 191         for(rp=prog_list;rp;rp=rp->next){
 192                 /* Only display procs with non-zero calls */
 193                 if(rp->num==0){
 194                         continue;
 195                 }
 196                 /* Scale the average SRT in units of 1us and round to the nearest us. */
 197                 td = ((guint64)(rp->tot.secs)) * NANOSECS_PER_SEC + rp->tot.nsecs;
 198                 td = ((td / rp->num) + 500) / 1000;
 199
 200                 g_snprintf(str, sizeof(str), "%s(%d)",rpc_prog_name(rp->program),rp->program);
 201                 printf("%-15s %2d %6d %3d.%06d %3d.%06d %3" G_GINT64_MODIFIER "u.%06" G_GINT64_MODIFIER "u\n",
 202                         str,
 203                         rp->version,
 204                         rp->num,
 205                         (int)(rp->min.secs),(rp->min.nsecs+500)/1000,
 206                         (int)(rp->max.secs),(rp->max.nsecs+500)/1000,
 207                         td/MICROSECS_PER_SEC, td%MICROSECS_PER_SEC
 208                 );
 209         }
 210         printf("===================================================================\n");
 211 }
 212
 213
 214 static void
 215 rpcprogs_init(const char *optarg _U_, void* userdata _U_)
 216 {
 217         GString *error_string;
 218
 219         if(already_enabled){
 220                 return;
 221         }
 222         already_enabled=1;
 223
 224         error_string=register_tap_listener("rpc", NULL, NULL, 0, NULL, rpcprogs_packet, rpcprogs_draw);
 225         if(error_string){
 226                 fprintf(stderr,"tshark: Couldn't register rpc,programs tap: %s\n",
 227                     error_string->str);
 228                 g_string_free(error_string, TRUE);
 229                 exit(1);
 230         }
 231 }
 232
 233
 234 void
 235 register_tap_listener_rpcprogs(void)
 236 {
 237         register_stat_cmd_arg("rpc,programs", rpcprogs_init, NULL);
 238 }
 239
 240