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mod_traffic.c
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/*
* Copyright (c) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
* 2002, 2003, 2004
* Ohio University.
*
* ---
*
* Starting with the release of tcptrace version 6 in 2001, tcptrace
* is licensed under the GNU General Public License (GPL). We believe
* that, among the available licenses, the GPL will do the best job of
* allowing tcptrace to continue to be a valuable, freely-available
* and well-maintained tool for the networking community.
*
* Previous versions of tcptrace were released under a license that
* was much less restrictive with respect to how tcptrace could be
* used in commercial products. Because of this, I am willing to
* consider alternate license arrangements as allowed in Section 10 of
* the GNU GPL. Before I would consider licensing tcptrace under an
* alternate agreement with a particular individual or company,
* however, I would have to be convinced that such an alternative
* would be to the greater benefit of the networking community.
*
* ---
*
* This file is part of Tcptrace.
*
* Tcptrace was originally written and continues to be maintained by
* Shawn Ostermann with the help of a group of devoted students and
* users (see the file 'THANKS'). The work on tcptrace has been made
* possible over the years through the generous support of NASA GRC,
* the National Science Foundation, and Sun Microsystems.
*
* Tcptrace 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.
*
* Tcptrace 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 Tcptrace (in the file 'COPYING'); if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* Author: Shawn Ostermann
* School of Electrical Engineering and Computer Science
* Ohio University
* Athens, OH
* http://www.tcptrace.org/
*/
#include "tcptrace.h"
static char const GCC_UNUSED rcsid[] =
"$Header: /usr/local/cvs/tcptrace/mod_traffic.c,v 5.16 2003/11/19 14:38:03 sdo Exp $";
#ifdef LOAD_MODULE_TRAFFIC
#include "mod_traffic.h"
/* info kept for each (active) port */
struct traffic_info {
/* which port */
u_short port;
/* interval byte counters */
PLINE line_nbytes;
u_long nbytes;
u_long ttlbytes;
/* interval packet counters */
PLINE line_npackets;
u_long npackets;
u_long ttlpackets;
/* active connections */
PLINE line_nactive;
u_long nactive;
u_long ttlactive;
/* idle connections */
PLINE line_nidle;
u_long nidle;
u_long ttlidle;
/* open connections */
PLINE line_nopen;
u_long nopen;
u_long ttlopen;
/* instantaneous open connections */
PLINE line_niopen;
u_long n_i_open;
u_long ttl_i_open;
/* long-duration connections */
PLINE line_nlong;
u_long nlong;
u_long ttllong;
/* pureacks */
PLINE line_pureacks;
u_long npureacks;
u_long ttlpureacks;
/* which color is used for plotting */
char *color;
/* linked list of the one's we're using */
struct traffic_info *next;
};
static struct traffic_info *traffichead = NULL;
#define NUM_PORTS 65536
static struct traffic_info **ports; /* [NUM_PORTS] */
#define EXCLUDE_PORT ((void *)(-1))
#define INCLUDE_PORT (NULL)
/* name of the file that port data is dumped into */
#define PORT_FILENAME "traffic_byport.dat"
#define STATS_FILENAME "traffic_stats.dat"
/* additional info kept per connection */
struct conn_info {
Bool wasactive; /* was this connection active over the interval? */
Bool wasopen; /* was this this connection EVER open? */
Bool isopen; /* is this connection open now? */
Bool islong; /* is this a long-duration connection? */
Bool halfopen; /* for half open conns */
struct traffic_info *pti1; /* pointer to the port info for this one */
struct traffic_info *pti2; /* pointer to the port info for this one */
struct conn_info *next; /* next in the chain */
u_int last_dupacks; /* last value of dupacks I saw */
u_int last_rexmits; /* last value of rexmits I saw */
u_int last_rtts; /* last value of rtt counters I saw */
};
static struct conn_info *connhead = NULL;
/* plotter files that we keep open */
static PLOTTER plotter_bytes;
static PLOTTER plotter_packets;
static PLOTTER plotter_active;
static PLOTTER plotter_idle;
static PLOTTER plotter_open;
static PLOTTER plotter_openclose;
static PLOTTER plotter_i_open;
static PLOTTER plotter_loss;
static PLOTTER plotter_long;
static PLOTTER plotter_rtt;
static PLOTTER plotter_halfopen;
static PLOTTER plotter_pureacks;
static PLOTTER plotter_data;
#define PLOTTER_BYTES_FILENAME "traffic_bytes.xpl"
#define PLOTTER_PACKETS_FILENAME "traffic_packets.xpl"
#define PLOTTER_ACTIVE_FILENAME "traffic_active.xpl"
#define PLOTTER_OPEN_FILENAME "traffic_open.xpl"
#define PLOTTER_OPENCLOSE_FILENAME "traffic_openclose.xpl"
#define PLOTTER_I_OPEN_FILENAME "traffic_i_open.xpl"
#define PLOTTER_LOSS_FILENAME "traffic_loss.xpl"
#define PLOTTER_LONG_FILENAME "traffic_long.xpl"
#define PLOTTER_RTT_FILENAME "traffic_rtt.xpl"
#define PLOTTER_HALFOPEN_FILENAME "traffic_halfopen.xpl"
#define PLOTTER_PUREACKS_FILENAME "traffic_pureacks.xpl"
#define PLOTTER_IDLE_FILENAME "traffic_idle.xpl"
#define PLOTTER_DATA_FILENAME "traffic_data.xpl"
/* argument flags */
static float age_interval = 15.0; /* 15 seconds by default */
static Bool doplot_bytes = FALSE;
static Bool doplot_packets = FALSE;
static Bool doplot_active = FALSE;
static Bool doplot_open = FALSE;
static Bool doplot_openclose = FALSE;
static Bool doplot_i_open = FALSE;
static Bool doplot_loss = FALSE;
static Bool doplot_long = FALSE;
static Bool doplot_rtt = FALSE;
static Bool doplot_halfopen = FALSE;
static Bool doplot_pureacks = FALSE;
static Bool doplot_idle = FALSE;
static Bool doplot_data = FALSE;
static int longconn_duration = 60;
/* local routines */
static struct traffic_info *MakeTrafficRec(u_short port);
static void MakeTrafficLines(struct traffic_info *pti);
static struct conn_info *MakeConnRec(void);
static void AgeTraffic(void);
static struct traffic_info *FindPort(u_short port);
static void IncludePorts(unsigned firstport, unsigned lastport);
static void ExcludePorts(unsigned firstport, unsigned lastport);
static void CheckPortNum(unsigned portnum);
static char *PortName(int port);
static void ParseArgs(char *argstring);
static void DoplotIOpen(int port, Bool fopen);
/* info for opens and closes graphs */
static PLINE line_num_closes;
static PLINE line_num_opens;
static PLINE line_open_conns;
static PLINE line_num_halfopens;
static int num_closes = 0;
static int num_opens = 0;
static int ttl_num_opens = 0;
static int ttl_num_closes = 0;
static int open_conns = 0;
static int num_halfopens = 0;
/* info for total byte counters */
static PLINE line_data_nonrexmit;
static PLINE line_data_all;
static u_llong data_nbytes_nonrexmit;
static u_llong data_nbytes_all;
/* info for the loss events graph */
static PLINE line_dupacks;
static PLINE line_rexmits;
static u_long dupacks;
static u_long ttl_dupacks;
static u_long rexmits;
static u_long ttl_rexmits;
/* info for the RTT graph */
static PLINE line_rtt_avg;
static PLINE line_rtt_min;
static PLINE line_rtt_max;
static float rtt_ttl; /* in msecs */
static float ttl_rtt_ttl; /* in msecs */
static int rtt_min = -1; /* in msecs */
static int rtt_max = -1; /* in msecs */
static int rtt_samples;
static int ttl_rtt_samples;
static u_int rtt_minvalid = 0; /* minimum RTT to consider (ms) */
static u_int rtt_maxvalid = 0xffffffff; /* maximum RTT to consider (ms) */
/* local debugging flag */
static int ldebug = 0;
static void
CheckPortNum(
unsigned portnum)
{
if (portnum >= NUM_PORTS) {
fprintf(stderr,"mod_traffic: Invalid port number '%d'\n", portnum);
traffic_usage();
exit(-1);
}
}
static void
ExcludePorts(
unsigned firstport,
unsigned lastport)
{
CheckPortNum(firstport);
CheckPortNum(lastport);
if (ldebug)
printf("mod_traffic: excluding ports [%d-%d]\n", firstport, lastport);
while (firstport <= lastport)
ports[firstport++] = EXCLUDE_PORT;
}
static void
IncludePorts(
unsigned firstport,
unsigned lastport)
{
CheckPortNum(firstport);
CheckPortNum(lastport);
if (ldebug)
printf("mod_traffic: including ports [%d-%d]\n", firstport, lastport);
while (firstport <= lastport)
ports[firstport++] = INCLUDE_PORT;
}
/* Mostly as a module example, here's a plug in that records TRAFFIC info */
int
traffic_init(
int argc,
char *argv[])
{
int i;
int enable=0;
char *args = NULL;
for (i=1; i < argc; ++i) {
if (!argv[i])
continue; /* argument already taken by another module... */
if (strncmp(argv[i],"-x",2) == 0) {
if (strncasecmp(argv[i]+2,"traffic",sizeof("traffic")-1) == 0) {
/* I want to be called */
args = argv[i]+(sizeof("-xtraffic")-1);
enable = 1;
printf("mod_traffic: characterizing traffic\n");
argv[i] = NULL;
}
}
}
if (!enable)
return(0); /* don't call me again */
/* init the data storage structure */
ports = MallocZ(NUM_PORTS*sizeof(struct traffic_info *));
ports[0] = MakeTrafficRec(0);
/* parse the encoded args */
ParseArgs(args);
/* open the output files */
if (doplot_packets)
plotter_packets =
new_plotter(NULL,
PLOTTER_PACKETS_FILENAME,
"packets per second over time by port",
"time","packets/second",
NULL);
if (doplot_bytes)
plotter_bytes =
new_plotter(NULL,
PLOTTER_BYTES_FILENAME,
"bytes per second over time by port",
"time","bytes/second",
NULL);
if (doplot_active)
plotter_active =
new_plotter(NULL,
PLOTTER_ACTIVE_FILENAME,
"active connections over time by port",
"time","active connections",
NULL);
if (doplot_idle)
plotter_idle =
new_plotter(NULL,
PLOTTER_IDLE_FILENAME,
"idle connections over time by port",
"time","idle connections",
NULL);
if (doplot_open)
plotter_open =
new_plotter(NULL,
PLOTTER_OPEN_FILENAME,
"open connections over time by port",
"time","open connections",
NULL);
if (doplot_i_open)
plotter_i_open =
new_plotter(NULL,
PLOTTER_I_OPEN_FILENAME,
"open connections over time by port - instantaneous",
"time","number of connections",
NULL);
if (doplot_openclose) {
plotter_openclose =
new_plotter(NULL,
PLOTTER_OPENCLOSE_FILENAME,
"connections opened and closed over time",
"time","number of connections",
NULL);
line_num_opens = new_line(plotter_openclose, "Number Opens", "green");
line_num_closes = new_line(plotter_openclose, "Number Closes", "red");
line_open_conns = new_line(plotter_openclose, "Total Open", "blue");
}
if (doplot_halfopen) {
plotter_halfopen =
new_plotter(NULL,
PLOTTER_HALFOPEN_FILENAME,
"half open connections over time",
"time","number of half open connections",
NULL);
line_num_halfopens = new_line(plotter_halfopen,
"Halfopen Conns", "green");
}
if (doplot_pureacks) {
plotter_pureacks =
new_plotter(NULL,
PLOTTER_PUREACKS_FILENAME,
"pure acks (no data) per second over time",
"time","pureacks/second",
NULL);
}
if (doplot_loss) {
plotter_loss =
new_plotter(NULL,
PLOTTER_LOSS_FILENAME,
"packet loss per second over time",
"time","events/second",
NULL);
line_dupacks = new_line(plotter_loss, "Triple Dupacks", "yellow");
line_rexmits = new_line(plotter_loss, "Retransmits", "blue");
}
if (doplot_rtt) {
plotter_rtt =
new_plotter(NULL,
PLOTTER_RTT_FILENAME,
"RTT over time",
"time","RTT (msecs)",
NULL);
line_rtt_min = new_line(plotter_rtt, "Min RTT", "green");
line_rtt_max = new_line(plotter_rtt, "Max RTT", "red");
line_rtt_avg = new_line(plotter_rtt, "Average RTT", "blue");
}
if (doplot_data) {
plotter_data =
new_plotter(NULL,
PLOTTER_DATA_FILENAME,
"Total Data Sent Over Time",
"time","total bytes",
NULL);
line_data_all = new_line(plotter_data, "All Data", "blue");
line_data_nonrexmit = new_line(plotter_data, "Non-Rexmitted Data", "red");
}
if (doplot_long) {
char title[100];
snprintf(title,sizeof(title),"connections still open after %d seconds\n",
longconn_duration);
plotter_long =
new_plotter(NULL,
PLOTTER_LONG_FILENAME,
title,
"time","number of connections",
NULL);
}
/* we don't want the normal output */
printsuppress = TRUE;
/* create any lines that I want to draw */
MakeTrafficLines(ports[0]);
/* init the graphs and etc... */
AgeTraffic();
return(1); /* TRUE means call traffic_read and traffic_done later */
}
/* return the record for traffic on this port */
static struct traffic_info *
FindPort(
u_short port)
{
struct traffic_info *pti;
/* port "0" means "all", but we don't need to treat it as a special case */
/* see what's there now */
pti = ports[port];
/* see if it's "excluded" */
if ((port != 0) && (pti == EXCLUDE_PORT))
return(NULL);
/* make a new one if there's a NULL there */
if (!pti) {
pti = MakeTrafficRec(port);
/* create any lines that I want to draw */
MakeTrafficLines(pti);
}
return(pti);
}
static struct traffic_info *
MakeTrafficRec(
u_short port)
{
struct traffic_info *pti;
pti = MallocZ(sizeof(struct traffic_info));
if (ldebug>10)
printf("MakeTrafficRec(%d) called\n", (int)port);
/* init */
pti->port = port;
/* chain it in (at head of list) */
pti->next = traffichead;
traffichead = pti;
/* add to lookup array */
ports[port] = pti;
return(pti);
}
static void
MakeTrafficLines(
struct traffic_info *pti)
{
char *portname;
static int nextcolor = 0;
/* map port number to name for printing */
portname = (pti->port==0)?"total":strdup(PortName(pti->port));
/* pick color */
pti->color = ColorNames[nextcolor % NCOLORS];
++nextcolor;
/* create the lines that we sometimes use */
if (doplot_bytes)
pti->line_nbytes = new_line(plotter_bytes, portname, pti->color);
if (doplot_packets)
pti->line_npackets = new_line(plotter_packets, portname, pti->color);
if (doplot_active)
pti->line_nactive = new_line(plotter_active, portname, pti->color);
if (doplot_idle)
pti->line_nidle = new_line(plotter_idle, portname, pti->color);
if (doplot_open)
pti->line_nopen = new_line(plotter_open, portname, pti->color);
if (doplot_long)
pti->line_nlong = new_line(plotter_long, portname, pti->color);
if (doplot_i_open)
pti->line_niopen = new_line(plotter_i_open, portname, pti->color);
if (doplot_pureacks)
pti->line_pureacks = new_line(plotter_pureacks, portname, pti->color);
}
static struct conn_info *
MakeConnRec(void)
{
struct conn_info *pci;
pci = MallocZ(sizeof(struct conn_info));
/* chain it in (at head of list) */
pci->next = connhead;
connhead = pci;
return(pci);
}
void
traffic_read(
struct ip *pip, /* the packet */
tcp_pair *ptp, /* info I have about this connection */
void *plast, /* past byte in the packet */
void *mod_data) /* connection info for this one */
{
struct tcphdr *ptcp = (struct tcphdr *) ((char *)pip + 4*IP_HL(pip));
struct traffic_info *pti1 = FindPort(ntohs(ptcp->th_sport));
struct traffic_info *pti2 = FindPort(ntohs(ptcp->th_dport));
u_long bytes = ntohs(pip->ip_len);
static timeval last_time = {0,0};
struct conn_info *pci = mod_data;
int was_rexmit = 0;
/* if neither port is interesting, then ignore this one */
if (!pti1 && !pti2) {
return;
}
/* OK, this connection is now active */
pci->wasactive = 1;
/* check to see if it's really "open" (traffic in both directions) */
if (!pci->wasopen) {
if ((ptp->a2b.packets > 0) && (ptp->b2a.packets > 0)) {
/* bidirectional: OK, we'll call it open */
pci->wasopen = 1;
pci->isopen = 1;
++num_opens;
++ttl_num_opens;
++open_conns;
/* instantaneous opens and closes */
if (doplot_i_open) {
DoplotIOpen(ntohs(ptcp->th_dport), TRUE);
DoplotIOpen(ntohs(ptcp->th_sport), TRUE);
DoplotIOpen(0, TRUE);
}
}
}
/* add to port-specific counters */
if (pti1) {
pti1->nbytes += bytes;
pti1->npackets += 1;
}
if (pti2) {
pti2->nbytes += bytes;
pti2->npackets += 1;
}
/* add to GLOBAL counters */
ports[0]->nbytes += bytes;
ports[0]->npackets += 1;
ports[0]->npureacks += 1;
/* see if we're closing it */
if (RESET_SET(ptcp) ||
(FIN_SET(ptcp) && /* find in BOTH directions */
((ptp->a2b.fin_count>0) && (ptp->b2a.fin_count>0)))) {
if (pci->isopen) {
pci->isopen = 0;
++num_closes;
--open_conns;
/* instantaneous opens and closes */
if (doplot_i_open) {
DoplotIOpen(ntohs(ptcp->th_dport), FALSE);
DoplotIOpen(ntohs(ptcp->th_sport), FALSE);
DoplotIOpen(0, FALSE);
}
}
}
/* half open conns */
if (FIN_SET(ptcp)) {
if ((ptp->a2b.fin_count>0) && (ptp->b2a.fin_count>0)) {
if (pci->halfopen) {
/* fully closed now */
--num_halfopens;
pci->halfopen = 0;
}
} else if (!pci->halfopen) {
/* half open now */
++num_halfopens;
pci->halfopen = 1;
}
}
/* check losses */
if (pci->last_dupacks != ptp->a2b.rtt_triple_dupack+
ptp->b2a.rtt_triple_dupack) {
pci->last_dupacks = ptp->a2b.rtt_triple_dupack+
ptp->b2a.rtt_triple_dupack;
++dupacks;
++ttl_dupacks;
}
if (pci->last_rexmits != ptp->a2b.rexmit_pkts+ptp->b2a.rexmit_pkts) {
pci->last_rexmits = ptp->a2b.rexmit_pkts+ptp->b2a.rexmit_pkts;
was_rexmit = 1;
++rexmits;
++ttl_rexmits;
}
/* add to total data counters */
data_nbytes_all += bytes;
if (!was_rexmit)
data_nbytes_nonrexmit += bytes;
/* RTT stats */
if (ACK_SET(ptcp)) {
tcb *ptcb;
int rtt;
/* see which of the 2 TCB's this goes with */
if (ptp->addr_pair.a_port == ntohs(ptcp->th_dport))
ptcb = &ptp->a2b;
else
ptcb = &ptp->b2a;
/* check the rtt counter of the last sample */
rtt = ptcb->rtt_last / 1000.0;
if ((pci->last_rtts != ptcb->rtt_count + ptcb->rtt_amback) &&
(ptcb->rtt_last != 0.0) &&
(rtt > rtt_minvalid) && (rtt <= rtt_maxvalid)) {
/* sample is only valid when one of these counters is higher */
pci->last_rtts = ptcb->rtt_count + ptcb->rtt_amback;
/* keep stats */
rtt_ttl += rtt;
ttl_rtt_ttl += rtt;
++rtt_samples;
++ttl_rtt_samples;
/* also, remember min and max */
if ((rtt_max == -1) || (rtt_max < rtt))
rtt_max = rtt;
if ((rtt_min == -1) || (rtt_min > rtt))
rtt_min = rtt;
if (ldebug > 9)
printf("Rtt: %d, min:%d, max:%d\n",
rtt, rtt_min, rtt_max);
}
}
/* see if this is now "long duration" */
if (!pci->islong) {
int etime_msecs = elapsed(ptp->first_time,current_time);
if (etime_msecs/1000000 > longconn_duration) {
pci->islong = 1;
}
}
/* count "pure acks" (no data) */
if (ACK_SET(ptcp)) {
int tcp_length, tcp_data_length;
tcp_length = getpayloadlength(pip, plast);
tcp_data_length = tcp_length - (4 * TH_OFF(ptcp));
if (tcp_data_length == 0) {
if (pti1) {
++pti1->npureacks;
}
if (pti2) {
++pti2->npureacks;
}
}
}
/* determine elapsed time and age the samples */
if (elapsed(last_time,current_time)/1000000.0 > age_interval) {
AgeTraffic();
last_time = current_time;
}
}
static char *
PortName(
int port)
{
static char buf[20];
if (port == 0)
return("total");
snprintf(buf,sizeof(buf),"%d",port);
return(buf);
}
static void
AgeTraffic(void)
{
struct traffic_info *pti;
struct conn_info *pci;
static timeval last_time = {0,0};
float etime;
int ups; /* units per second */
/* first time doesn't count */
if (ZERO_TIME(&last_time)) {
last_time = current_time;
return;
}
/* check elapsed time */
etime = elapsed(last_time, current_time);
if (ldebug>1)
printf("AgeTraffic called, elapsed time is %.3f seconds\n", etime/1000000);
if (etime == 0.0)
return;
/* roll the open/active/long connections into the port records */
for (pci=connhead; pci; pci=pci->next) {
if (pci->wasactive) {
if (pci->pti1)
++pci->pti1->nactive;
if (pci->pti2)
++pci->pti2->nactive;
pci->wasactive = 0;
++ports[0]->nactive;
}
if (pci->isopen) {
if (pci->pti1)
++pci->pti1->nopen;
if (pci->pti2)
++pci->pti2->nopen;
++ports[0]->nopen;
if (pci->islong) {
if (pci->pti1)
++pci->pti1->nlong;
if (pci->pti2)
++pci->pti2->nlong;
++ports[0]->nlong;
}
if (!pci->wasactive) {
/* open and !active ==> IDLE */
if (pci->pti1)
++pci->pti1->nidle;
if (pci->pti2)
++pci->pti2->nidle;
++ports[0]->nidle;
}
}
}
/* ============================================================ */
/* plot halfopen conns */
if (doplot_halfopen) {
/* draw lines */
extend_line(line_num_halfopens,current_time, num_halfopens);
}
/* ============================================================ */
/* plot connection activity */
/* opens */
if (doplot_openclose) {
/* draw lines */
extend_line(line_num_opens,current_time, num_opens);
extend_line(line_num_closes,current_time, num_closes);
extend_line(line_open_conns,current_time, open_conns);
/* reset interval counters */
// Counting ttl_num_opens instantaneously as and when num_opens is incremented,
// so that ttl_num_opens is printed properly in traffic_stats.dat even
// when the -C(openclose) option is not given.
// Hence commenting off the following line. - Mani, 4 Aug 2003.
// ttl_num_opens += num_opens;
ttl_num_closes += num_closes;
num_opens = 0;
num_closes = 0;
}
/* ============================================================ */
/* report of loss events */
if (doplot_loss) {
/* convert to events/second */
/* sdo bugfix - Wed May 12, 1999 - round UP!! */
dupacks = (dupacks+age_interval-1)/age_interval;
rexmits = (rexmits+age_interval-1)/age_interval;
/* draw lines */
extend_line(line_dupacks,current_time, dupacks);
extend_line(line_rexmits,current_time, rexmits);
/* reset interval counters */
dupacks = 0;
rexmits = 0;
}
/* ============================================================ */
/* report of RTT */
if (doplot_rtt && (rtt_samples > 0)) {
int rtt_avg;
/* convert to average rtt */
rtt_avg = (int)((rtt_ttl/(float)rtt_samples));
/* draw lines */
extend_line(line_rtt_avg, current_time, rtt_avg);
if (rtt_min != -1)
extend_line(line_rtt_min, current_time, rtt_min);
if (rtt_max != -1)
extend_line(line_rtt_max, current_time, rtt_max);
/* reset interval counters */
rtt_ttl = 0;
rtt_samples = 0;
rtt_min = -1;
rtt_max = -1;
}
/* ============================================================ */
/* report of total data */
if (doplot_data) {
extend_line(line_data_all, current_time, data_nbytes_all);
extend_line(line_data_nonrexmit, current_time, data_nbytes_nonrexmit);
}
/* ============================================================ */
/* print them out */
for (pti=traffichead; pti; pti=pti->next) {
if (ldebug>1)
printf(" Aging Port %u bytes: %lu packets: %lu\n",
pti->port, pti->nbytes, pti->npackets);
/* plot bytes */
if (doplot_bytes) {
/* convert to units per second */
ups = (int)((float)pti->nbytes * 1000000.0 / etime);
/* plot it */
extend_line(pti->line_nbytes,current_time, ups);
}
/* plot packets */
if (doplot_packets) {
/* convert to units per second */
ups = (int)((float)pti->npackets * 1000000.0 / etime);
/* plot it */
extend_line(pti->line_npackets,current_time, ups);
}
/* plot active connections */
if (doplot_active) {
/* plot it */
extend_line(pti->line_nactive,current_time, pti->nactive);
}
/* plot idle connections */
if (doplot_idle) {
/* plot it */
extend_line(pti->line_nidle,current_time, pti->nidle);
}
/* plot open connections */
if (doplot_open) {
/* plot it */
extend_line(pti->line_nopen,current_time, pti->nopen);
}
/* plot long-duration */
if (doplot_long) {
extend_line(pti->line_nlong,current_time, pti->nlong);
}
/* plot pureacks */
if (doplot_pureacks) {
/* convert to units per second */
ups = (int)((float)pti->npureacks * 1000000.0 / etime);
extend_line(pti->line_pureacks, current_time, ups);
}
}
/* zero them out */
for (pti=traffichead; pti; pti=pti->next) {
pti->ttlbytes += pti->nbytes;
pti->ttlpackets += pti->npackets;
pti->ttlpureacks += pti->npureacks;
pti->nbytes = 0;
pti->nlong = 0;
pti->npackets = 0;
pti->nactive = 0;
pti->nidle = 0;
pti->nopen = 0;
pti->npureacks = 0;
}
last_time = current_time;
}
void
traffic_done(void)
{
struct traffic_info *pti;
struct conn_info *pci;
double etime = elapsed(first_packet,last_packet);
int etime_secs = etime / 1000000.0;
MFILE *pmf;
int i;
/* roll the active connections into the port records */
for (pci=connhead; pci; pci=pci->next) {
if (pci->pti1)
++pci->pti1->ttlactive;
if (pci->pti2)
++pci->pti2->ttlactive;
++ports[0]->ttlactive;
}
AgeTraffic();
pmf = Mfopen(PORT_FILENAME,"w");