tap-rpcprogs.c

   1 /* tap-rpcprogs.c
   2  * rpcstat   2002 Ronnie Sahlberg
   3  *
   4  * $Id$
   5  *
   6  * Ethereal - Network traffic analyzer
   7  * By Gerald Combs <gerald@ethereal.com>
   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 tethereal.
  26  * It is only used by tethereal and not ethereal
  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/dissectors/packet-rpc.h>
  43 #include "register.h"
  44
  45 /* used to keep track of statistics for a specific program/version */
  46 typedef struct _rpc_program_t {
  47         struct _rpc_program_t *next;
  48         guint32 program;
  49         guint32 version;
  50         int num;
  51         nstime_t min;
  52         nstime_t max;
  53         nstime_t tot;
  54 } rpc_program_t;
  55
  56 static rpc_program_t *prog_list=NULL;
  57 static int already_enabled=0;
  58
  59 static int
  60 rpcprogs_packet(void *dummy1 _U_, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pri)
  61 {
  62         const rpc_call_info_value *ri=pri;
  63         nstime_t delta;
  64         rpc_program_t *rp=NULL;
  65
  66         if(!prog_list){
  67                 /* the list was empty */
  68                 rp=g_malloc(sizeof(rpc_program_t));
  69                 rp->next=NULL;
  70                 rp->program=ri->prog;
  71                 rp->version=ri->vers;
  72                 rp->num=0;
  73                 rp->min.secs=0;
  74                 rp->min.nsecs=0;
  75                 rp->max.secs=0;
  76                 rp->max.nsecs=0;
  77                 rp->tot.secs=0;
  78                 rp->tot.nsecs=0;
  79                 prog_list=rp;
  80         } else if((ri->prog==prog_list->program)
  81                 &&(ri->vers==prog_list->version)){
  82                 rp=prog_list;
  83         } else if( (ri->prog<prog_list->program)
  84                 ||((ri->prog==prog_list->program)&&(ri->vers<prog_list->version))){
  85                 /* we should be first entry in list */
  86                 rp=g_malloc(sizeof(rpc_program_t));
  87                 rp->next=prog_list;
  88                 rp->program=ri->prog;
  89                 rp->version=ri->vers;
  90                 rp->num=0;
  91                 rp->min.secs=0;
  92                 rp->min.nsecs=0;
  93                 rp->max.secs=0;
  94                 rp->max.nsecs=0;
  95                 rp->tot.secs=0;
  96                 rp->tot.nsecs=0;
  97                 prog_list=rp;
  98         } else {
  99                 /* we go somewhere else in the list */
 100                 for(rp=prog_list;rp;rp=rp->next){
 101                         if((rp->next)
 102                         && (rp->next->program==ri->prog)
 103                         && (rp->next->version==ri->vers)){
 104                                 rp=rp->next;
 105                                 break;
 106                         }
 107                         if((!rp->next)
 108                         || (rp->next->program>ri->prog)
 109                         || (  (rp->next->program==ri->prog)
 110                             &&(rp->next->version>ri->vers))){
 111                                 rpc_program_t *trp;
 112                                 trp=g_malloc(sizeof(rpc_program_t));
 113                                 trp->next=rp->next;
 114                                 trp->program=ri->prog;
 115                                 trp->version=ri->vers;
 116                                 trp->num=0;
 117                                 trp->min.secs=0;
 118                                 trp->min.nsecs=0;
 119                                 trp->max.secs=0;
 120                                 trp->max.nsecs=0;
 121                                 trp->tot.secs=0;
 122                                 trp->tot.nsecs=0;
 123                                 rp->next=trp;
 124                                 rp=trp;
 125                                 break;
 126                         }
 127                 }
 128         }
 129
 130
 131         /* we are only interested in reply packets */
 132         if(ri->request){
 133                 return 0;
 134         }
 135
 136         /* calculate time delta between request and reply */
 137         delta.secs=pinfo->fd->abs_secs-ri->req_time.secs;
 138         delta.nsecs=pinfo->fd->abs_usecs*1000-ri->req_time.nsecs;
 139         if(delta.nsecs<0){
 140                 delta.nsecs+=1000000000;
 141                 delta.secs--;
 142         }
 143
 144         if((rp->max.secs==0)
 145         && (rp->max.nsecs==0) ){
 146                 rp->max.secs=delta.secs;
 147                 rp->max.nsecs=delta.nsecs;
 148         }
 149
 150         if((rp->min.secs==0)
 151         && (rp->min.nsecs==0) ){
 152                 rp->min.secs=delta.secs;
 153                 rp->min.nsecs=delta.nsecs;
 154         }
 155
 156         if( (delta.secs<rp->min.secs)
 157         ||( (delta.secs==rp->min.secs)
 158           &&(delta.nsecs<rp->min.nsecs) ) ){
 159                 rp->min.secs=delta.secs;
 160                 rp->min.nsecs=delta.nsecs;
 161         }
 162
 163         if( (delta.secs>rp->max.secs)
 164         ||( (delta.secs==rp->max.secs)
 165           &&(delta.nsecs>rp->max.nsecs) ) ){
 166                 rp->max.secs=delta.secs;
 167                 rp->max.nsecs=delta.nsecs;
 168         }
 169
 170         rp->tot.secs += delta.secs;
 171         rp->tot.nsecs += delta.nsecs;
 172         if(rp->tot.nsecs>1000000000){
 173                 rp->tot.nsecs-=1000000000;
 174                 rp->tot.secs++;
 175         }
 176         rp->num++;
 177
 178         return 1;
 179 }
 180
 181
 182 static void
 183 rpcprogs_draw(void *dummy _U_)
 184 {
 185 #ifdef G_HAVE_UINT64
 186         guint64 td;
 187 #else
 188         guint32 td;
 189 #endif
 190         rpc_program_t *rp;
 191         char str[64];
 192
 193         printf("\n");
 194         printf("===================================================================\n");
 195         printf("ONC-RPC Program Statistics:\n");
 196         printf("Program    Version  Calls   Min SRT   Max SRT   Avg SRT\n");
 197         for(rp=prog_list;rp;rp=rp->next){
 198                 /* scale it to units of 10us.*/
 199                 /* for long captures with a large tot time, this can overflow on 32bit */
 200                 td=(int)rp->tot.secs;
 201                 td=td*100000+(int)rp->tot.nsecs/10000;
 202                 if(rp->num){
 203                         td/=rp->num;
 204                 } else {
 205                         td=0;
 206                 }
 207
 208                 sprintf(str,"%s(%d)",rpc_prog_name(rp->program),rp->program);
 209                 printf("%-15s %2d %6d %3d.%05d %3d.%05d %3d.%05d\n",
 210                         str,
 211                         rp->version,
 212                         rp->num,
 213                         (int)rp->min.secs,rp->min.nsecs/10000,
 214                         (int)rp->max.secs,rp->max.nsecs/10000,
 215                         td/100000, td%100000
 216                 );
 217         }
 218         printf("===================================================================\n");
 219 }
 220
 221
 222 static void
 223 rpcprogs_init(char *optarg _U_)
 224 {
 225         GString *error_string;
 226
 227         if(already_enabled){
 228                 return;
 229         }
 230         already_enabled=1;
 231
 232         error_string=register_tap_listener("rpc", NULL, NULL, NULL, rpcprogs_packet, rpcprogs_draw);
 233         if(error_string){
 234                 fprintf(stderr,"tethereal: Couldn't register rpc,programs tap: %s\n",
 235                     error_string->str);
 236                 g_string_free(error_string, TRUE);
 237                 exit(1);
 238         }
 239 }
 240
 241
 242 void
 243 register_tap_listener_rpcprogs(void)
 244 {
 245         register_tap_listener_cmd_arg("rpc,programs", rpcprogs_init);
 246 }
 247
 248