forked from osmocom/wireshark
80c1907a36
it's used to register a callback for a tap listener invoked if the specified command line argument is specified to the "-z" flag. Move it, along with routines to: look up a "-z" argument in the table constructed by "register_tap_listener_cmd_arg()" and either save the full argument to "-z" and the corresponding listener if it's found or return a failure indication if it isn't; list the available tap listeners; call the "init" routines for the tap listeners saved in the table above; and have Ethereal and Tethereal use those routines. svn path=/trunk/; revision=13993
366 lines
10 KiB
C
366 lines
10 KiB
C
/* tap-rpcstat.c
|
|
* rpcstat 2002 Ronnie Sahlberg
|
|
*
|
|
* $Id$
|
|
*
|
|
* Ethereal - Network traffic analyzer
|
|
* By Gerald Combs <gerald@ethereal.com>
|
|
* 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.
|
|
*/
|
|
|
|
/* This module provides rpc call/reply RTT statistics to tethereal.
|
|
* It is only used by tethereal and not ethereal
|
|
*
|
|
* It serves as an example on how to use the tap api.
|
|
*/
|
|
|
|
#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/dissectors/packet-rpc.h>
|
|
#include "register.h"
|
|
|
|
/* used to keep track of statistics for a specific procedure */
|
|
typedef struct _rpc_procedure_t {
|
|
char *proc;
|
|
int num;
|
|
nstime_t min;
|
|
nstime_t max;
|
|
nstime_t tot;
|
|
} rpc_procedure_t;
|
|
|
|
/* used to keep track of the statistics for an entire program interface */
|
|
typedef struct _rpcstat_t {
|
|
char *prog;
|
|
char *filter;
|
|
guint32 program;
|
|
guint32 version;
|
|
guint32 num_procedures;
|
|
rpc_procedure_t *procedures;
|
|
} rpcstat_t;
|
|
|
|
|
|
|
|
/* This callback is never used by tethereal but it is here for completeness.
|
|
* When registering below, we could just have left this function as NULL.
|
|
*
|
|
* When used by ethereal, this function will be called whenever we would need
|
|
* to reset all state. Such as when ethereal opens a new file, when it
|
|
* starts a new capture, when it rescans the packetlist after some prefs have
|
|
* changed etc.
|
|
* So if your aplication has some state it needs to clean up in those
|
|
* situations, here is a good place to put that code.
|
|
*/
|
|
static void
|
|
rpcstat_reset(void *prs)
|
|
{
|
|
rpcstat_t *rs=prs;
|
|
guint32 i;
|
|
|
|
for(i=0;i<rs->num_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;
|
|
}
|
|
}
|
|
|
|
|
|
/* This callback is invoked whenever the tap system has seen a packet
|
|
* we might be interested in.
|
|
* The function is to be used to only update internal state information
|
|
* in the *tapdata structure, and if there were state changes which requires
|
|
* the window to be redrawn, return 1 and (*draw) will be called sometime
|
|
* later.
|
|
*
|
|
* This function should be as lightweight as possible since it executes together
|
|
* with the normal ethereal dissectors. Try to push as much processing as
|
|
* possible into (*draw) instead since that function executes asynchronously
|
|
* and does not affect the main threads performance.
|
|
*
|
|
* If it is possible, try to do all "filtering" explicitely as we do below in
|
|
* this example since you will get MUCH better performance than applying
|
|
* a similar display-filter in the register call.
|
|
*
|
|
* The third parameter is tap dependant. Since we register this one to the "rpc"
|
|
* tap the third parameters type is rpc_call_info_value.
|
|
*
|
|
*
|
|
* The filtering we do is just to check the rpc_call_info_value struct that
|
|
* we were called for the proper program and version. We didnt apply a filter
|
|
* when we registered so we will be called for ALL rpc packets and not just
|
|
* the ones we are collecting stats for.
|
|
*
|
|
*
|
|
* function returns :
|
|
* 0: no updates, no need to call (*draw) later
|
|
* !0: state has changed, call (*draw) sometime later
|
|
*/
|
|
static int
|
|
rpcstat_packet(void *prs, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pri)
|
|
{
|
|
rpcstat_t *rs=prs;
|
|
const rpc_call_info_value *ri=pri;
|
|
nstime_t delta;
|
|
rpc_procedure_t *rp;
|
|
|
|
if(ri->proc>=rs->num_procedures){
|
|
/* dont handle this since its outside of known table */
|
|
return 0;
|
|
}
|
|
/* we are only interested in reply packets */
|
|
if(ri->request){
|
|
return 0;
|
|
}
|
|
/* we are only interested in certain program/versions */
|
|
if( (ri->prog!=rs->program) || (ri->vers!=rs->version) ){
|
|
return 0;
|
|
}
|
|
|
|
rp=&(rs->procedures[ri->proc]);
|
|
|
|
/* calculate time delta between request and reply */
|
|
delta.secs=pinfo->fd->abs_secs-ri->req_time.secs;
|
|
delta.nsecs=pinfo->fd->abs_usecs*1000-ri->req_time.nsecs;
|
|
if(delta.nsecs<0){
|
|
delta.nsecs+=1000000000;
|
|
delta.secs--;
|
|
}
|
|
|
|
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>1000000000){
|
|
rp->tot.nsecs-=1000000000;
|
|
rp->tot.secs++;
|
|
}
|
|
|
|
rp->num++;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* This callback is used when tethereal wants us to draw/update our
|
|
* data to the output device. Since this is tethereal only output is
|
|
* stdout.
|
|
* Tethereal will only call this callback once, which is when tethereal has
|
|
* finished reading all packets and exists.
|
|
* If used with ethereal this may be called any time, perhaps once every 3
|
|
* seconds or so.
|
|
* This function may even be called in parallell with (*reset) or (*draw)
|
|
* so make sure there are no races. The data in the rpcstat_t can thus change
|
|
* beneath us. Beware.
|
|
*/
|
|
static void
|
|
rpcstat_draw(void *prs)
|
|
{
|
|
rpcstat_t *rs=prs;
|
|
guint32 i;
|
|
#ifdef G_HAVE_UINT64
|
|
guint64 td;
|
|
#else
|
|
guint32 td;
|
|
#endif
|
|
printf("\n");
|
|
printf("===================================================================\n");
|
|
printf("%s Version %d RTT Statistics:\n", rs->prog, rs->version);
|
|
printf("Filter: %s\n",rs->filter?rs->filter:"");
|
|
printf("Procedure Calls Min RTT Max RTT Avg RTT\n");
|
|
for(i=0;i<rs->num_procedures;i++){
|
|
/* scale it to units of 10us.*/
|
|
/* for long captures with a large tot time, this can overflow on 32bit */
|
|
td=(int)rs->procedures[i].tot.secs;
|
|
td=td*100000+(int)rs->procedures[i].tot.nsecs/10000;
|
|
if(rs->procedures[i].num){
|
|
td/=rs->procedures[i].num;
|
|
} else {
|
|
td=0;
|
|
}
|
|
|
|
printf("%-15s %6d %3d.%05d %3d.%05d %3d.%05d\n",
|
|
rs->procedures[i].proc,
|
|
rs->procedures[i].num,
|
|
(int)rs->procedures[i].min.secs,rs->procedures[i].min.nsecs/10000,
|
|
(int)rs->procedures[i].max.secs,rs->procedures[i].max.nsecs/10000,
|
|
td/100000, td%100000
|
|
);
|
|
}
|
|
printf("===================================================================\n");
|
|
}
|
|
|
|
static guint32 rpc_program=0;
|
|
static guint32 rpc_version=0;
|
|
static gint32 rpc_min_proc=-1;
|
|
static gint32 rpc_max_proc=-1;
|
|
|
|
static void *
|
|
rpcstat_find_procs(gpointer *key, gpointer *value _U_, gpointer *user_data _U_)
|
|
{
|
|
rpc_proc_info_key *k=(rpc_proc_info_key *)key;
|
|
|
|
if(k->prog!=rpc_program){
|
|
return NULL;
|
|
}
|
|
if(k->vers!=rpc_version){
|
|
return NULL;
|
|
}
|
|
if(rpc_min_proc==-1){
|
|
rpc_min_proc=k->proc;
|
|
rpc_max_proc=k->proc;
|
|
}
|
|
if((gint32)k->proc<rpc_min_proc){
|
|
rpc_min_proc=k->proc;
|
|
}
|
|
if((gint32)k->proc>rpc_max_proc){
|
|
rpc_max_proc=k->proc;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* When called, this function will create a new instance of rpcstat.
|
|
* program and version are whick onc-rpc program/version we want to
|
|
* collect statistics for.
|
|
* This function is called from tethereal when it parses the -z rpc, arguments
|
|
* and it creates a new instance to store statistics in and registers this
|
|
* new instance for the rpc tap.
|
|
*/
|
|
static void
|
|
rpcstat_init(char *optarg)
|
|
{
|
|
rpcstat_t *rs;
|
|
guint32 i;
|
|
int program, version;
|
|
int pos=0;
|
|
char *filter=NULL;
|
|
GString *error_string;
|
|
|
|
if(sscanf(optarg,"rpc,rtt,%d,%d,%n",&program,&version,&pos)==2){
|
|
if(pos){
|
|
filter=optarg+pos;
|
|
} else {
|
|
filter=NULL;
|
|
}
|
|
} else {
|
|
fprintf(stderr, "tethereal: invalid \"-z rpc,rtt,<program>,<version>[,<filter>]\" argument\n");
|
|
exit(1);
|
|
}
|
|
|
|
rs=g_malloc(sizeof(rpcstat_t));
|
|
rs->prog=rpc_prog_name(program);
|
|
rs->program=program;
|
|
rs->version=version;
|
|
if(filter){
|
|
rs->filter=g_malloc(strlen(filter)+1);
|
|
strcpy(rs->filter, filter);
|
|
} else {
|
|
rs->filter=NULL;
|
|
}
|
|
rpc_program=program;
|
|
rpc_version=version;
|
|
rpc_min_proc=-1;
|
|
rpc_max_proc=-1;
|
|
g_hash_table_foreach(rpc_procs, (GHFunc)rpcstat_find_procs, NULL);
|
|
if(rpc_min_proc==-1){
|
|
fprintf(stderr,"tethereal: Invalid -z rpc,rrt,%d,%d\n",rpc_program,rpc_version);
|
|
fprintf(stderr," Program:%d version:%d isn't supported by tethereal.\n", rpc_program, rpc_version);
|
|
exit(1);
|
|
}
|
|
|
|
|
|
rs->num_procedures=rpc_max_proc+1;
|
|
rs->procedures=g_malloc(sizeof(rpc_procedure_t)*(rs->num_procedures+1));
|
|
for(i=0;i<rs->num_procedures;i++){
|
|
rs->procedures[i].proc=rpc_proc_name(program, version, 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;
|
|
}
|
|
|
|
/* It is possible to create a filter and attach it to the callbacks. Then the
|
|
* callbacks would only be invoked if the filter matched.
|
|
* Evaluating filters is expensive and if we can avoid it and not use them
|
|
* we gain performance.
|
|
* In this case we do the filtering for protocol and version inside the
|
|
* callback itself but use whatever filter the user provided.
|
|
* (Perhaps the user only want the stats for nis+ traffic for certain objects?)
|
|
*
|
|
*/
|
|
|
|
error_string=register_tap_listener("rpc", rs, filter, rpcstat_reset, rpcstat_packet, rpcstat_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, "tethereal: Couldn't register rpc,rtt tap: %s\n",
|
|
error_string->str);
|
|
g_string_free(error_string, TRUE);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
register_tap_listener_rpcstat(void)
|
|
{
|
|
register_tap_listener_cmd_arg("rpc,rtt,", rpcstat_init);
|
|
}
|
|
|