[LTP] [PATCH] network/perf_lan: remove the test
Alexey Kodanev
alexey.kodanev@oracle.com
Fri Jun 10 17:05:38 CEST 2016
There are several reasons to remove it:
* Test does what 'ping -p' command can do (can be added to tcp_cmds/ping);
* It needs cleanup/fixing and IPv6 version is disabled right now;
* ck_packet() is wrongly setting data buffer pointer, assuming that
the sender added timestamp but it didn't. Actually timestamp was
removed in the packet sending code but not in the receiving one
(patch ef77253);
* Also test always passes, even if packet data is not correct, because
ck_packet() always returns 0, so it doesn't really check packets.
Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
---
runtest/net.tcp_cmds | 1 -
runtest/stress.part3 | 2 -
testcases/network/.gitignore | 2 -
testcases/network/tcp_cmds/perf_lan/Makefile | 45 ---
testcases/network/tcp_cmds/perf_lan/perf_lan | 122 -------
testcases/network/tcp_cmds/perf_lan/pingpong.c | 396 -----------------------
testcases/network/tcp_cmds/perf_lan/pingpong6.c | 291 -----------------
7 files changed, 0 insertions(+), 859 deletions(-)
delete mode 100644 testcases/network/tcp_cmds/perf_lan/Makefile
delete mode 100755 testcases/network/tcp_cmds/perf_lan/perf_lan
delete mode 100644 testcases/network/tcp_cmds/perf_lan/pingpong.c
delete mode 100644 testcases/network/tcp_cmds/perf_lan/pingpong6.c
diff --git a/runtest/net.tcp_cmds b/runtest/net.tcp_cmds
index 466718b..de58b35 100644
--- a/runtest/net.tcp_cmds
+++ b/runtest/net.tcp_cmds
@@ -8,7 +8,6 @@ finger finger01
ftp export TCbin=$LTPROOT/testcases/network/tcp_cmds/ftp; ftp01
host host01
netstat netstat01
-perf_lan export TCbin=$LTPROOT/testcases/network/tcp_cmds/perf_lan; perf_lan
ping export LTPROOT; ping01
rcp export TCbin=$LTPROOT/testcases/network/tcp_cmds/rcp; rcp01
rdist export TCbin=$LTPROOT/testcases/network/tcp_cmds/rdist; rdist01
diff --git a/runtest/stress.part3 b/runtest/stress.part3
index c5da547..350a2c3 100644
--- a/runtest/stress.part3
+++ b/runtest/stress.part3
@@ -913,5 +913,3 @@ hangup01 hangup01
mc_cmds mc_cmds
mc_opts export TCsrc=$LTPROOT/testcases/network/multicast/mc_opts; mc_opts
rpc01 rpc01
-perf_lan perf_lan
-
diff --git a/testcases/network/.gitignore b/testcases/network/.gitignore
index ca4e0f3..63d6361 100644
--- a/testcases/network/.gitignore
+++ b/testcases/network/.gitignore
@@ -40,8 +40,6 @@
/tcp_cmds/echo/createfile
/tcp_cmds/echo/echoes
/tcp_cmds/echo/echoes6
-/tcp_cmds/perf_lan/pingpong
-/tcp_cmds/perf_lan/pingpong6
/tcp_cmds/sendfile/testsf_c
/tcp_cmds/sendfile/testsf_c6
/tcp_cmds/sendfile/testsf_s
diff --git a/testcases/network/tcp_cmds/perf_lan/Makefile b/testcases/network/tcp_cmds/perf_lan/Makefile
deleted file mode 100644
index 7ef4d13..0000000
--- a/testcases/network/tcp_cmds/perf_lan/Makefile
+++ /dev/null
@@ -1,45 +0,0 @@
-#
-# network/tcp_cmds/perf_lan testcases Makefile.
-#
-# Copyright (C) 2009, Cisco Systems Inc.
-#
-# 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.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-# Garrett Cooper, July 2009
-#
-
-top_srcdir ?= ../../../..
-
-include $(top_srcdir)/include/mk/testcases.mk
-
-CPPFLAGS += -D_GNU_SOURCE -I$(abs_srcdir)/../include
-
-# XXX (garrcoop): alias casting problems.
-CPPFLAGS += -Wno-error
-
-INSTALL_TARGETS := perf_lan
-
-# NOTE (garrcoop): Once everything compiles with the same sources using
-# pingpong.c, then the following commented code should be uncommented and
-# pingpong6.c should be nuked. Unfortunately that isn't quite yet...
-#
-#MAKE_TARGETS := pingpong pingpong6
-#
-#%6: CPPFLAGS += -DINET6
-#
-#%6.o: %.c
-# $(COMPILE.c) $(OUTPUT_OPTION) $<
-
-include $(top_srcdir)/include/mk/generic_leaf_target.mk
diff --git a/testcases/network/tcp_cmds/perf_lan/perf_lan b/testcases/network/tcp_cmds/perf_lan/perf_lan
deleted file mode 100755
index 595a091..0000000
--- a/testcases/network/tcp_cmds/perf_lan/perf_lan
+++ /dev/null
@@ -1,122 +0,0 @@
-#! /bin/sh
-unset LIBPATH
-#
-# Copyright (c) International Business Machines Corp., 2000
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
-# the GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-#
-#
-#
-# FILE : perf_lan
-#
-# PURPOSE: Generates LAN traffic using ICMP echo packets.
-#
-#
-# SETUP: The home directory of root on the machine exported as "RHOST"
-# MUST have a ".rhosts" file with the hostname of the client
-# machine, where the test is executed.
-#
-# HISTORY:
-# 06/06/03 Manoj Iyer manjo@mail.utexas.edu
-# - Modified testcase to use Test API and fixed bugs.
-# 03/01 Robbie Williamson (robbiew@us.ibm.com)
-# -Ported
-#
-#
-#***********************************************************************
-
-do_setup()
-{
- RHOST=${RHOST:-`hostname`}
- TCtmp=${TCtmp:-$LTPROOT/testcases/bin/${TC}$$}
-
- PACKETSIZE=${PACKETSIZE:-512}
- NUMPACKETS=${NUMPACKETS:-1}
- NUMLOOPS=${NUMLOOPS:-10}
- PINGPONG="pingpong${EXEC_SUFFIX}"
-
- tst_setup
-
- trap interrupt_testcase INT TERM URG USR1
-}
-
-#-----------------------------------------------------------------------
-#
-# FUNCTION: do_test
-# INPUT: None.
-# OUTPUT: Informational messages are logged into the run log.
-#
-#-----------------------------------------------------------------------
-
-do_test()
-{
- tst_resm TINFO "Executing $0"
-
- while [ $TST_COUNT -le $NUMLOOPS ]; do
-
- $PINGPONG $RHOST $PACKETSIZE $NUMPACKETS
-
- RETVALUE=$?
-
- case "$RETVALUE" in
- 0) tst_resm TINFO "Successful execution for loop $TST_COUNT";;
- 1) end_testcase "Error trying to send to host";;
- 2) end_testcase "Error - Data length is too long";;
- 3) end_testcase "Usage error ";;
- 5) end_testcase "Error - Socket setting";;
- 6) end_testcase "Error - Pipe broken";;
- 7) end_testcase "Error - Fork fail";;
- 10) end_testcase "Error - wrong Protocol";;
- *) end_testcase "Unexpected exit code from $PINGPONG: $RETVALUE";;
- esac
- incr_tst_count
-
- done
-
-}
-
-#-----------------------------------------------------------------------
-#
-# FUNCTION: interrupt_testcase
-# PURPOSE: Finish up the testcase - called when the time has expired
-# INPUT: None.
-# OUTPUT: None.
-#
-#-----------------------------------------------------------------------
-
-interrupt_testcase()
-{
- tst_resm TINFO "Testcase interrupted - cleaning up"
- tst_resm TINFO "Killing background process if it is still running"
- kill -9 $CHILDPID
- end_testcase
-}
-
-#-----------------------------------------------------------------------
-#
-# FUNCTION: MAIN
-# PURPOSE: To invoke functions that perform the tasks as described in
-# the design in the prolog above.
-# INPUT: See SETUP in the prolog above.
-# OUTPUT: Logged run results written to testcase run log
-#
-#-----------------------------------------------------------------------
-. net_cmdlib.sh
-
-read_opts $*
-
-do_setup
-do_test
-end_testcase
diff --git a/testcases/network/tcp_cmds/perf_lan/pingpong.c b/testcases/network/tcp_cmds/perf_lan/pingpong.c
deleted file mode 100644
index 1196312..0000000
--- a/testcases/network/tcp_cmds/perf_lan/pingpong.c
+++ /dev/null
@@ -1,396 +0,0 @@
-/*
-#
-#
-# Task Subprogram
-#
-# SUBPROGRAM NAME: PINGPONG.C
-#
-# REQUIRED PARAMETERS:
-# Calling Procedure: pingpong HOST SIZE PACKETS
-# HOST - Current host
-# SIZE - Size of each packet
-# PACKETS - the number of packets across the network
-#
-# SETUP REQUIRED:
-# o This task must be run as root.
-# o TCP/IP must be configured before executing this task.
-#
-# DESCRIPTION:
-# Purpose:To generate lan traffic with ICMP echo packet
-# Command: None
-# Subcommand:None
-# Design:
-# Create raw socket
-# spawn child process to send echo ICMP packet
-# the child process build echo packet and send to network
-# repeat n times
-# the parent goes on to receive the reply
-# when finish print # of packets sent & # pf packets received
-#
-#
-#===========================================================================
-*/
-
-#define PS2
-#include <stdio.h>
-#include <errno.h>
-#include <stdint.h>
-#include <string.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <sys/file.h>
-#include <sys/signal.h>
-#include <arpa/inet.h>
-#include <netinet/in_systm.h>
-#include <netinet/in.h>
-#include <netdb.h>
-#include "test.h"
-#include "netdefs.h"
-
-#define MAXPACKET 4096 /* max packet size */
-#ifndef MAXHOSTNAMELEN
-#define MAXHOSTNAMELEN 64
-#endif
-
-#if INET6
-char *TCID = "perf_lan6";
-#else
-char *TCID = "perf_lan";
-#endif
-
-int TST_TOTAL = 1;
-
-int pfd[2];
-int fdstr[10];
-int verbose;
-int count;
-uint8_t packet[MAXPACKET];
-int options;
-int s; /* Socket file descriptor */
-struct hostent *hp; /* Pointer to host info */
-struct timezone tz; /* leftover */
-
-sai_t whereto; /* Who to pingpong */
-int datalen; /* How much data */
-
-char *hostname;
-char hnamebuf[MAXHOSTNAMELEN];
-
-int npackets = 1;
-int ntransmitted = 0; /* sequence number for outbound
- * packets => amount sent */
-int ident;
-int nwrite;
-
-int nreceived = 0; /* # of packets we got back */
-int timing = 0;
-
-void finish(int);
-uint16_t in_cksum(uint16_t *, int);
-int ck_packet(uint8_t *, size_t, sai_t *);
-int echopkt(int, int);
-
-/*
- * M A I N
- */
-int main(int argc, char *argv[])
-{
- sai_t from;
- int rc = 0;
- struct protoent *proto;
-
- tst_resm(TINFO, "Starting pingpong - to send / receive packets from "
- "host");
-
- /* Get Host net address */
- tst_resm(TINFO, "Get host net address for sending packets");
- memset((char *)&whereto, 0, sizeof(sa_t));
-#if INET6
- whereto.sin6_family = AFI;
- whereto.sin6_addr.s6_addr = inet_addr(argv[1]);
- if (whereto.sin6_addr.s6_addr != -1) {
-#else
- whereto.sin_family = AFI;
- whereto.sin_addr.s_addr = inet_addr(argv[1]);
- if (whereto.sin_addr.s_addr != -1) {
-#endif
- strcpy(hnamebuf, argv[1]);
- hostname = hnamebuf;
- } else {
-
- if ((hp = gethostbyname(argv[1])) != NULL) {
-#if INET6
- whereto.sin6_family = hp->h_addrtype;
- memcpy((caddr_t) & whereto.sin6_addr, hp->h_addr,
- hp->h_length);
-#else
- whereto.sin_family = hp->h_addrtype;
- memcpy((caddr_t) & whereto.sin_addr, hp->h_addr,
- hp->h_length);
-#endif
- hostname = hp->h_name;
- } else {
- tst_brkm(TBROK, NULL, "%s: unknown host, couldn't get "
- "address", argv[0]);
- }
-
- }
-
- /* Determine Packet Size - either use what was passed in or the default */
- tst_resm(TINFO, "Determining packet size");
-
- if (argc >= 3)
- datalen = atoi(argv[2]);
- if (datalen < 0) {
- tst_brkm(TBROK, NULL, "datalen must be an integer.");
- } else
- datalen = 64;
-
- datalen -= 8;
-
- if (datalen > MAXPACKET) {
- tst_brkm(TBROK, NULL, "packet size too large");
- }
- if (datalen >= sizeof(struct timeval))
- timing = 1;
-
- /* Set number of packets to be sent */
- tst_resm(TINFO, "Determining number of packets to send");
- if (argc >= 4)
- npackets = atoi(argv[3]);
-
- /* Get PID of current process */
- ident = getpid() & 0xFFFF;
-
- /* Get network protocol to use (check /etc/protocol) */
- if ((proto = getprotobyname(ICMP_PROTO)) == NULL) {
- tst_resm(TINFO, "unknown protocol: %s", ICMP_PROTO);
- tst_exit();
- }
-
- /* Create a socket endpoint for communications - returns a descriptor */
- if ((s = socket(AFI, SOCK_RAW, proto->p_proto)) < 0) {
- tst_resm(TINFO, "socket - could not create link");
- tst_exit();
- }
-
- tst_resm(TINFO, "echoing %s: %d data bytes", hostname, datalen);
-
- setlinebuf(stdout);
-
- /* Setup traps */
- signal(SIGINT, finish);
- signal(SIGCLD, finish);
-
- /* Fork a child process to continue sending packets */
- tst_resm(TINFO, "Create a child process to continue to send packets");
- switch (fork()) {
- case -1:
- tst_resm(TINFO, "ERROR when forking a new process");
- tst_exit();
- case 0:
- /* Child's work */
- ntransmitted = echopkt(datalen, npackets);
- tst_resm(TINFO, "%d packets transmitted", ntransmitted);
- sleep(10);
- break;
- default:
-
- tst_resm(TINFO, "Parent started - to receive packets");
- /* Parent's work - receive packets back from child */
-
- size_t len;
-
- while (1) {
-
- len = sizeof(packet);
- ssize_t cc;
- socklen_t fromlen;
-
- /* Receive packet from socket */
- tst_resm(TINFO, "Receiving packet");
- if ((cc =
- recvfrom(s, packet, len, 0, (sa_t *) & from,
- &fromlen)) < 0) {
- tst_resm(TINFO, "ERROR - recvfrom");
- }
- /* Verify contents of packet */
- if ((rc = ck_packet(packet, cc, &from)) != 0) {
- tst_resm(TINFO,
- "ERROR - network garbled packet");
- } else {
- nreceived++;
- }
-
- }
-
- }
-
- tst_exit();
-
-}
-
-int echopkt(int datalen, int npackets)
-{
- int count = 0;
- static uint8_t outpack[MAXPACKET];
- register icmp_t *icp = (icmp_t *) outpack;
- int i;
- ssize_t cc;
-
- register u_char *datap = &outpack[8];
-
- /* Setup the packet structure */
- tst_resm(TINFO, "Setting up ICMP packet structure to send to host");
-
-#if INET6
- icp->icmp6_type = IERQ;
- icp->icmp6_code = 0;
- icp->icmp6_id = ident; /* ID */
-#else
- icp->icmp_type = IERQ;
- icp->icmp_code = 0;
- icp->icmp_id = ident; /* ID */
-#endif
-
- cc = datalen + 8; /* skips ICMP portion */
-
- for (i = 8; i < datalen; i++) { /* skip 8 for time */
- *datap++ = i;
- }
-
- /* Compute ICMP checksum here */
-#if INET6
- icp->icmp6_cksum = in_cksum((uint16_t *) icp, cc);
-#else
- icp->icmp_cksum = in_cksum((uint16_t *) icp, cc);
-#endif
-
- /* cc = sendto(s, msg, len, flags, to, tolen) */
- ntransmitted = 0;
-
- while (count < npackets) {
- count++;
- /* Send packet through socket created */
- tst_resm(TINFO, "Sending packet through created socket");
- i = sendto(s, outpack, cc, 0, (const sa_t *)&whereto,
- sizeof(whereto));
-
- if (i < 0 || i != cc) {
- if (i < 0)
- perror("sendto");
- tst_resm(TINFO, "wrote %s %zd chars, ret=%d",
- hostname, cc, i);
- fflush(stdout);
- }
- }
- /* sleep(30); */
- return (count);
-
-}
-
-/*
- * I N _ C K S U M
- *
- * Checksum routine for Internet Protocol family headers (C Version)
- *
- */
-uint16_t in_cksum(uint16_t * addr, int len)
-{
- register int nleft = len;
- register uint16_t *w = addr, tmp;
- register int sum = 0;
- register uint16_t answer = 0;
-
- /*
- * Our algorithm is simple, using a 32 bit accumulator (sum), we add
- * sequential 16 bit words to it, and at the end, fold back all the
- * carry bits from the top 16 bits into the lower 16 bits.
- */
- while (nleft > 1) {
- sum += *w++;
- nleft -= 2;
- }
-
- /* mop up an odd byte, if necessary */
- if (nleft == 1) {
- tmp = *(u_char *) w;
- sum += (tmp << 8);
- }
- /* add back carry outs from top 16 bits to low 16 bits */
- sum = (sum >> 16) + (sum & 0xffff); /* add hi 16 to low 16 */
- sum += (sum >> 16); /* add carry */
- answer = ~sum; /* truncate to 16 bits */
-
- return answer;
-
-}
-
-/*
- * F I N I S H
- *
- * Outputs packet information to confirm transmission and reception.
- */
-void finish(int n)
-{
- tst_resm(TINFO, "%d packets received", nreceived);
- exit(0);
-}
-
-/*
- * C K _ P A C K E T
- *
- * Checks contents of packet to verify information did not get destroyed
- */
-
-/*
- * buf - pointer to start of IP header
- * cc - total size of received packet
- * from - address of sender
- */
-int ck_packet(uint8_t * buf, size_t cc, sai_t * from)
-{
- u_char i;
- int iphdrlen;
- struct ip *ip = (struct ip *)buf; /* pointer to IP header */
- register icmp_t *icp; /* ptr to ICMP */
- u_char *datap;
-
-#if INET6
- from->sin6_addr.s6_addr = ntohl(from->sin6_addr.s6_addr);
-#else
- from->sin_addr.s_addr = ntohl(from->sin_addr.s_addr);
-#endif
-
- iphdrlen = ip->ip_hl << 2; /* Convert # 16-bit words to
- * number of bytes */
- cc -= iphdrlen;
- icp = (icmp_t *) (buf + iphdrlen);
- datap = (u_char *) icp + sizeof(struct timeval) + 8;
- if (icp->icmp_type != IERP) {
- return 0; /* Not your packet because it's
- * not an echo */
- }
- if (icp->icmp_id != ident) {
- return 0; /* Sent to us by someone
- * else */
- }
-
- /* Verify data in packet */
- tst_resm(TINFO, "Verify data in packet after returned from sender");
- if (datalen > 118) {
- datalen = 118;
- }
- tst_resm(TINFO, "Checking Data.");
- for (i = 8; i < datalen; i++) { /* skip 8 for time */
- if (i != (*datap)) {
- tst_resm(TINFO, "Data cannot be validated.");
- }
- datap++;
- }
-
- return 0;
-
-}
diff --git a/testcases/network/tcp_cmds/perf_lan/pingpong6.c b/testcases/network/tcp_cmds/perf_lan/pingpong6.c
deleted file mode 100644
index 9747f58..0000000
--- a/testcases/network/tcp_cmds/perf_lan/pingpong6.c
+++ /dev/null
@@ -1,291 +0,0 @@
-/*
-#
-#
-# Task Subprogram
-#
-# SUBPROGRAM NAME: PINGPONG6.C
-#
-# REQUIRED PARAMETERS:
-# Calling Procedure: pingpong6 HOST SIZE PACKETS
-# HOST - Current host
-# SIZE - Size of each packet
-# PACKETS - the number of packets across the network
-#
-# SETUP REQUIRED:
-# o This task must be run as root.
-# o TCP/IP must be configured before executing this task.
-#
-# DESCRIPTION:
-# Purpose:To generate lan traffic with ICMP6 echo packet
-# Command: None
-# Subcommand:None
-# Design:
-# Create raw socket
-# spawn child process to send echo ICMP6 packet
-# the child process build echo packet and send to network
-# repeat n times
-# the parent goes on to receive the reply
-# when finish print # of packets sent & # pf packets received
-#
-#
-#===========================================================================
-*/
-
-#define PS2
-#include <stdio.h>
-#include <errno.h>
-#include <string.h>
-#include <sys/time.h>
-#include <sys/types.h>
-
-#include <sys/param.h>
-#include <sys/socket.h>
-#include <sys/file.h>
-#include <sys/signal.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#include <netinet/in_systm.h>
-#include <netinet/in.h>
-#include <netinet/ip6.h>
-#include <netinet/icmp6.h>
-#include <netdb.h>
-
-#define MAXPACKET 4096 /* max packet size */
-#ifndef MAXHOSTNAMELEN
-#define MAXHOSTNAMELEN 64
-#endif
-
-int pfd[2];
-int fdstr[10];
-int verbose;
-int count;
-u_char packet[MAXPACKET];
-int options;
-int s; /* Socket file descriptor */
-struct addrinfo *hp; /* Pointer to host info */
-struct addrinfo hints;
-
-struct sockaddr_in6 whereto; /* Who to pingpong */
-int datalen; /* How much data */
-
-char *hostname;
-char hnamebuf[MAXHOSTNAMELEN];
-
-int npackets = 1;
-int ntransmitted = 0; /* sequence # for outbound packets = #sent */
-int ident;
-
-int nreceived = 0; /* # of packets we got back */
-int timing = 0;
-void finish(int);
-int nwrite;
-/*
- * M A I N
- */
-int main(argc, argv)
-char *argv[];
-{
- struct sockaddr_in6 from;
- char **av = argv;
- int nrcv;
- int on = 1;
- int rc = 0;
- struct protoent *proto;
- int gai;
-
- printf("Starting pingpong - to send / receive packets from host \n");
-
- /* Get Host net address */
- printf("Get host net address for sending packets \n");
- memset(&hints, 0, sizeof(hints));
- hints.ai_family = PF_INET6;
-
- if ((gai = getaddrinfo(av[1], NULL, &hints, &hp)) != 0) {
- fprintf(stderr, "Unknown subject address %s: %s\n", av[1],
- gai_strerror(gai));
- exit(1);
- }
- if (!hp->ai_addr || hp->ai_addr->sa_family != AF_INET6) {
- fprintf(stderr, "getaddrinfo failed");
- exit(1);
- }
- strcpy(hnamebuf, av[1]);
- hostname = hnamebuf;
- memset((char *)&whereto, 0x00, sizeof(struct sockaddr));
- memcpy(&whereto, hp->ai_addr, hp->ai_addrlen);
-
- /* Determine Packet Size - either use what was passed in or default */
- printf("Determine packet size \n");
- if (argc >= 3)
- datalen = atoi(av[2]) - 8;
- else
- datalen = 64 - 8;
- if (datalen > MAXPACKET) {
- printf("Pingpong: packet size too large\n");
- exit(1);
- }
-
- /* Set number of packets to be sent */
- printf("Determine number of packets to send \n");
- if (argc >= 4)
- npackets = atoi(av[3]);
-
- /* Get PID of current process */
- ident = getpid() & 0xFFFF;
-
- /* Get network protocol to use (check /etc/protocol) */
- if ((proto = getprotobyname("ipv6-icmp")) == NULL) {
- printf("ICMP6: unknown protocol\n");
- exit(1);
- }
-
- /* Create a socket endpoint for communications - returns a descriptor */
- if ((s = socket(AF_INET6, SOCK_RAW, proto->p_proto)) < 0) {
- printf("Pingpong: socket - could not create link \n");
- exit(1);
- }
-
- printf("echoing %s: %d data bytes\n", hostname, datalen);
- printf("Total packet size is %d bytes\n", datalen + 8);
-
- setlinebuf(stdout);
-
- /* Setup traps */
- signal(SIGINT, finish);
- signal(SIGCLD, finish);
-
- /* Fork a child process to continue sending packets */
- printf("Create a child process to continue to send packets \n");
- switch (fork()) {
- case -1:
- printf("ERROR when forking a new process\n");
- exit(1);
- case 0:
- /* Child's work */
- ntransmitted = echopkt(datalen, npackets);
- printf("%d packets transmitted, ", ntransmitted);
- sleep(10);
- break;
- default:
- printf("Parent started - to receive packets \n");
- /* Parent's work - receive packets back from child */
- for (;;) {
- int len = sizeof(packet);
- unsigned int fromlen = sizeof(from);
-#ifdef __64BIT__
- long cc;
-#else
- int cc;
-#endif
-
- /* Receive packet from socket */
- fromlen = sizeof(from);
- if ((cc =
- recvfrom(s, packet, len, 0,
- (struct sockaddr *)&from,
- &fromlen)) < 0) {
- printf("ERROR in recvfrom\n");
- }
- /* Verify contents of packet */
- if ((rc = ck_packet(packet, cc, &from)) == 0)
- nreceived++;
- }
- }
- return 0;
-}
-
-echopkt(datalen, npackets)
-int datalen;
-int npackets;
-{
- int count = 0;
- static u_char outpack[MAXPACKET];
- register struct icmp6_hdr *icp = (struct icmp6_hdr *)outpack;
- int i;
-#ifdef __64BIT__
- long cc;
-#else
- int cc;
-#endif
-
- register u_char *datap = &outpack[8];
-
- /* Setup the packet structure */
- printf("Setup ICMP packet structure to send to host \n");
- icp->icmp6_type = ICMP6_ECHO_REQUEST;
- icp->icmp6_code = 0;
- icp->icmp6_cksum = 0;
- icp->icmp6_id = ident; /* ID */
-
- cc = datalen + 8; /* skips ICMP portion */
-
- for (i = 0; i < datalen; i++) {
- *datap++ = 6;
- }
- ntransmitted = 0;
- while (count < npackets) {
- count++;
- /* Send packet through socket created */
- printf("Sending packet through created socket \n");
- i = sendto(s, outpack, cc, 0, &whereto, sizeof(whereto));
-
- if (i < 0 || i != cc) {
- if (i < 0)
- perror("sendto");
- printf("pingpong6: wrote %s %d chars, ret=%d\n",
- hostname, cc, i);
- fflush(stdout);
- }
- }
- /* sleep(30); */
- return (count);
-}
-
-/*
- * F I N I S H
- *
- * Outputs packet information to confirm transmission and reception.
- */
-void finish(int n)
-{
- printf("%d packets received, \n", nreceived);
- exit(0);
-}
-
-/*
- * C K _ P A C K E T
- *
- * Checks contents of packet to verify information did not get destroyed
- */
-
-ck_packet(buf, cc, from)
-u_char *buf; /* pointer to start of IP header */
-int cc; /* total size of received packet */
-struct sockaddr_in6 *from; /* address of sender */
-{
- int i;
- struct icmp6_hdr icp_hdr;
- struct icmp6_hdr *icp = (struct ip6_hdr *)buf; /* pointer to IP header */
- u_char *datap;
-
- datap = (u_char *) icp + sizeof(icp_hdr);
- if (icp->icmp6_type != ICMP6_ECHO_REPLY) {
- return (1); /* Not your packet 'cause not an echo */
- }
- if (icp->icmp6_id != ident) {
- return (1); /* Sent to us by someone else */
- }
- printf("Receiving packet \n");
- /* Verify data in packet */
-
- printf("Checking Data.\n");
- for (i = 0; i < datalen; i++) {
- if ((*datap) != 6) {
- printf("RVW: Data in [%d] is %d\n", i, (*datap));
- printf("Data cannot be validated. \n");
- }
- datap++;
- }
- return (0);
-}
--
1.7.1
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