+++ /dev/null
-/* tap-rpcstat.c
- * rpcstat 2002 Ronnie Sahlberg
- *
- * $Id$
- *
- * 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.
- */
-
-/* This module provides rpc call/reply SRT statistics to tshark.
- * It is only used by tshark and not wireshark.
- *
- * 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/stat_cmd_args.h>
-#include <epan/dissectors/packet-rpc.h>
-
-#define MICROSECS_PER_SEC 1000000
-#define NANOSECS_PER_SEC 1000000000
-
-/* used to keep track of statistics for a specific procedure */
-typedef struct _rpc_procedure_t {
- const 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 {
- const char *prog;
- char *filter;
- guint32 program;
- guint32 version;
- guint32 num_procedures;
- rpc_procedure_t *procedures;
-} rpcstat_t;
-
-
-
-/* This callback is never used by tshark but it is here for completeness.
- * When registering below, we could just have left this function as NULL.
- *
- * When used by wireshark, this function will be called whenever we would need
- * to reset all state, such as when wireshark opens a new file, when it
- * starts a new capture, when it rescans the packetlist after some prefs have
- * changed etc.
- *
- * So if your application 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 wireshark dissectors. Try to push as much
- * processing as possible into (*draw) instead since that function executes
- * asynchronously and does not affect the main thread's performance.
- *
- * If it is possible, try to do all "filtering" explicitly 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 dependent. Since we register this one to the
- * "rpc" tap, the third parameter 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 didn't 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 */
- nstime_delta(&delta, &pinfo->fd->abs_ts, &ri->req_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;
-}
-
-/* This callback is used when tshark wants us to draw/update our data to the
- * output device. Since this is tshark, the only output is stdout.
- * TShark will only call this callback once, which is when tshark has finished
- * reading all packets and exits.
- * If used with wireshark this may be called any time, perhaps once every 3
- * seconds or so.
- * This function may even be called in parallel 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;
- guint64 td;
- printf("\n");
- printf("=======================================================\n");
- printf("%s Version %d SRT Statistics:\n", rs->prog, rs->version);
- printf("Filter: %s\n",rs->filter?rs->filter:"");
- printf("Procedure Calls Min SRT Max SRT Avg SRT\n");
- for(i=0;i<rs->num_procedures;i++){
- if(rs->procedures[i].num==0){
- continue;
- }
- /* Scale the average SRT in units of 1us and round to the nearest us. */
- td = ((guint64)(rs->procedures[i].tot.secs)) * NANOSECS_PER_SEC + rs->procedures[i].tot.nsecs;
- td = ((td / rs->procedures[i].num) + 500) / 1000;
-
- printf("%-15s %6d %3d.%06d %3d.%06d %3" G_GINT64_MODIFIER "u.%06" G_GINT64_MODIFIER "u\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,
- td/MICROSECS_PER_SEC, td%MICROSECS_PER_SEC
- );
- }
- 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 which onc-rpc program/version we want to collect
- * statistics for.
- *
- * This function is called from tshark 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(const char *optarg, void* userdata _U_)
-{
- rpcstat_t *rs;
- guint32 i;
- int program, version;
- int pos=0;
- const char *filter=NULL;
- GString *error_string;
-
- if(sscanf(optarg,"rpc,srt,%d,%d,%n",&program,&version,&pos)==2){
- if(pos){
- filter=optarg+pos;
- } else {
- filter=NULL;
- }
- } else {
- fprintf(stderr, "tshark: invalid \"-z rpc,srt,<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_strdup(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,"tshark: Invalid -z rpc,srt,%d,%d\n",rpc_program,rpc_version);
- fprintf(stderr," Program:%d version:%d isn't supported by tshark.\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,
- * then 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 wants the stats for nis+ traffic for certain objects?)
- */
-
- error_string=register_tap_listener("rpc", rs, filter, 0, 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, "tshark: Couldn't register rpc,srt tap: %s\n",
- error_string->str);
- g_string_free(error_string, TRUE);
- exit(1);
- }
-}
-
-
-void
-register_tap_listener_rpcstat(void)
-{
- register_stat_cmd_arg("rpc,srt,", rpcstat_init,NULL);
-}
-
git.samba.org / obnox / wireshark / wip.git / blobdiff