#!/usr/bin/perl

# This program is used to test the max TCP connections allowed through a firewall, 
# and may be used as an example for others who wish to automate LANforge tests.

# This script sets up 1 UDP connection and as many TCP connections as specified
# by $num_macvlans.  Each connection is started and verified that it is passing
# traffic before starting the next connection.  As each TCP connection is started
# the UDP connection is checked for any dropped packets.  As soon as dropped packets
# are detected on the UDP connection, the number of TCP connections is recorded
# and the entire test is repeated for $loop_max times.  An average number of TCP
# connections is calculated and reported at the conclusion of all the test runs.


# Un-buffer output
$| = 1;

use strict;
use Switch;

use Net::Telnet ();
use Time::HiRes qw (usleep);
use LANforge::Port;
use LANforge::Utils;
use LANforge::Endpoint;

my $init_stop_all = 1;      # Stop all tests before running script test.
my $script_speed = 25;      # Increase to issue commands faster.
my $quiet_cli_cmds = 1;     # Quiesce CLI response output to commands sent.
my $quiet_cli_output = 1;   # Quiesce unsolicited CLI output.
my $cli_cmd_delay = 0;      # Increase to slow command rate sent to cli.
my $report_timer = 9000;    # Set report timer for all tests created in ms, i.e. 8 seconds

my $INIT = 1;               # If true, removes all previous tests and ports!!!
my $create_only = 0;        # If true, only create tests, i.e. do not automatically run them.

my $mac_init   = 0;         # Set to 1 to start MAC address from zero when running looped test.
my $ip_init    = 0;         # Set to 1 to start IP addresses from zero when running looped test.
my $init_once  = 1;         # Set to 1 to only initialize test creation once.
my $init_net   = 1;         # Set to 0 to disable reconfiguring MAC and IP addresses.
my $init_tests = 1;         # Set to 0 to disable reconfiguring tests.
my $first_run  = 1;         # Set to 0 to disable initial configurations.
my $name_id    = 0;         # First index of name of endpoints and CXs.
my $name_id_len = 0;        # Override for length of $name_id.
my $loop_max   = 3;
my $start_stop_loops = 2;
my $run_for_time  = 120;    # Run for XX seconds..then will be stopped again.
my $stop_for_time = 5;      # Run for XX seconds..then will be stopped again.
my $keep_running = 1;       # If ture, will keep last test loop running.
my $ignore_phys_ports = 1;  # If true, just muck with MACVLANs.

my $one_cx_per_port = 0;    # If zero, will have one of EACH of the cx types on each port.

my $cx_types_from_file = 0; # If true, will rotate through the @cx_types_files
                            # when creating tests instead of using @cx_types array.

my @cx_types = (
#"lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp",
"lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp",
"lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp",
"lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp","lf_tcp");

my $test_mgr = "max_cxs_tm";

my $lfmgr_host = "localhost";
my $lfmgr_port = 4001;

my $shelf = 1;

# This sets up connections.
my $lf1 = 1;  # Minor Resource EID of first LANforge resource.
my $lf2 = ""; # Set to "" if we have no second machine.  Or set to second Resource
              # minor EID to create mac-vlans on it.


# Port pairs.  These are the ports that should be talking to each other.
# i.e. the third column in lf1_ports talks to the third column in lf2_ports.
# EIDs or aliases can be used.
# Port pairs must match on each shelf - will enhance to allow any pair on each shelf.
#my @lf1_ports = (1); #, 2, 3);
#my @lf2_ports = (2); #, 2, 3);
my @lf1_ports = (         "eth0",         "eth1");
my @lf2_ports = ("");
my @ip_base   = (      "192.168",        "172.1");
my @ip_c      = (             2 ,             1 );
my @ip_lsb    = (             2 ,             2 );
my @msk       = ("255.255.255.0","255.255.255.0");
my @ip_gw     = (  "192.168.2.1",    "172.1.1.1");

my $mac1 = 0x00;         # Starting MAC address 00:m5:m4:m3:m2:m1 where:
my $mac2 = 0x00;         # m5 is shelf EID, m4 is card EID, m3 is $mac3, 
my $mac3 = 0x00;         # m2 is $mac2 and m1 is $mac1.


my $start_mvlan = 0;
my $num_mvlans = 30;
my $num_cxs = 0;

my @min_rate = (19200);# bps
my @max_rate = (19200);# bps
my @min_pkt_szs = (948); # bytes
my @max_pkt_szs = (948); # bytes

##########################
# lf_max_cxs.pl specific #
##########################

my $max_delay = 100;       # Maximum endpoint delay threshold in milliseconds.
my $percent_ep_delay = 3.0;# Percentage of endpoints allowed to exceed the
                           # $max_delay.  Exceeding percentage will cause curren
                           # test loop to exit.
                           
my $settle_time = 1;       # Number of seconds to allow an endpoint to receive data 
my $ep_rx_strikes = 3;     # Number of strikes before declaring it failed.

my $sample_time_dly = 500; # Milliseconds between endpoint delay samples.
my $samples = 3;

my $use_udp_probe = 1;
my $use_udp_loss  = 1;
my $end_udp_drop  = 0;

#my $percentile = 97;
#my $filename = "delay_data.txt";


################
# Layer-4 only #
################

my $url_dl = 1;               # If true, test will download from URL.  False will upload to URL.
#my $l4_dl_path = "/tmp";     # Path to save downloaded file.
#my $l4_dl_path = "NUL";      # Windows equivalent of *nix /dev/null.
my $l4_dl_path = "/dev/null"; # Improve performance by saving downloaded file to /dev/null.

my @l4_urls = (
 "http://192.168.100.3/index.html", "ftp://192.168.100.3/file", "http://192.168.100.3/index.html", "ftp://192.168.100.3/file"
,"http://192.168.100.3/index.html", "ftp://192.168.100.3/file", "http://192.168.100.3/index.html", "ftp://192.168.100.3/file"
,"http://192.168.100.3/index.html", "ftp://192.168.100.3/file", "http://192.168.100.3/index.html", "ftp://192.168.100.3/file"
,"http://192.168.100.3/index.html", "ftp://192.168.100.3/file", "http://192.168.100.3/index.html", "ftp://192.168.100.3/file"
,"http://192.168.100.3/index.html", "ftp://192.168.100.3/file", "http://192.168.100.3/index.html", "ftp://192.168.100.3/file"
);
#my @l4_urls = ("ftp://192.168.100.3/file");

my $urls_10m = 100;           # How many URLs to process every 10 minutes.
my $l4_timeout = 10000;       # How long to wait for a connection, in milliseconds.


###########
# File-IO #
###########

my $fio_base = "/mnt/fio_base";
my $fio_targ_dir = "";
my $fsrw = "write";


#########
# Debug #
#########

my $DEBUG = 0;
my $D_PAUSE = 3;
########################################################################
# Nothing to configure below here, most likely.
########################################################################
my $script_name = $0;
$sample_time_dly = $sample_time_dly * 1000;

# Parse cmd-line args
my $i;
my $j;
for ($i = 0; $i<@ARGV; $i++) {
  my $var = $ARGV[$i];
  if ($var =~ m/(\S+)=(.*)/) {
    my $arg = $1;
    my $val = $2;
    handleCmdLineArg($arg, $val);
  }
  else {
    handleCmdLineArg($var);
  }
}

my $ss_wait
  = 0.003 * $report_timer;  # Increase delay (seconds) if experiencing problems on slow systems.


if ($lfmgr_host eq undef) {
  print "\nYou must define a LANforge Manager!!!\n\n"
      . "For example:\n"
      . "./$script_name mgr=localhost\n"
      . "OR\n"
      . "./$script_name mgr=192.168.1.101\n\n";
  printHelp();
  exit (1);
}

my $foundL4 = 0;
for ($i = 0; $i<@cx_types; $i++) {
  if ($cx_types[$i] eq "l4") {
    $foundL4 = 1;
    last;
  }
}
if ($lf2 == "" && @lf1_ports < 2 && !$foundL4) {
  die ("Must have more than one port with only one resource.");
}

#if (!$numvlan && !$num_cxs) {
#  die ("Must have either number of MACVLANs (num_mvl) or cross-connects (num_cxs) > 0.");
#}

print
    "\nStarting script with the following arguments:"
  . "\ninit: $INIT"
  . "\nmanager: $lfmgr_host\n"
  . "\nlf1: $lf1\nlf2: $lf2\n"
  . "\nlf1_ports: " . join(" ", @lf1_ports)
  . "\nlf2_ports: " . join(" ", @lf2_ports) . "\n"
  . "\nstart_macvlans: $start_mvlan"
  . "\nnum_mvlans: $num_mvlans\n"
  . "\nmin_rates: " . join(" ", @min_rate)
  . "\nmax_rates: " . join(" ", @max_rate) 
  . "\nmin_pkt_sizes: " . join(" ", @min_pkt_szs)
  . "\nmax_pkt_sizes: " . join(" ", @max_pkt_szs) . "\n"
  . "\ncx_types: " . join(" ", @cx_types)
  . "\none_cx_per_port: $one_cx_per_port\n\n";

if ($DEBUG) { sleep ($D_PAUSE); }


# Determine total port and endpoint counts and make sorting by name easier in the GUI :P

my @num = ();    # Formatted index number for name sorting in GUI.
my $t_num = 0;
my $t_ports = 0;
my $ni=0;
my $nj=0;

my $lf2orig = $lf2;
 
if ($lf2 == "") {
  $lf2 = $lf1;
  if ($foundL4) {
    @lf2_ports = undef;
  }
  else {
    # put every other port into @lf2_ports to fake out lf2 info which makes the
    # script work later.
    my @lf1_ports_tmp = @lf1_ports;
    @lf1_ports = undef;
    @lf2_ports = undef;
    $i=0;
    for ($ni=0; $ni<@lf1_ports_tmp; $ni++) {
      $lf1_ports[$i] = $lf1_ports_tmp[$ni];
      $lf2_ports[$i] = $lf1_ports_tmp[++$ni];
      $i++;
    }
  }
}

# Check that ip_base address pairs aren't the same.
for ($ni = 0; $ni<@ip_base; $ni++) {
  if ($ip_base[$ni] == $ip_base[$ni+1]) {
    die ("ERROR: Base IP addresses cannot be the same.");
  }
  $ni++;
}

my @cxts = ("lf", "lf_udp", "lf_tcp", "custom_udp", "custom_tcp", "l4",
            "fileIONFS", "fileIOCIFS");
my @t_cxts = ();
for ($ni=0; $ni<@cxts; $ni++) {
  @t_cxts[$ni] = 0;
}

if ($lf2orig ne "") {
  if ($ignore_phys_ports) {
    $t_ports = $num_mvlans;
  }
  else {
    $t_ports = @lf1_ports + @lf2_ports + ($num_mvlans);
  }
}
elsif ($num_mvlans) {
  if ($ignore_phys_ports) {
    $t_ports = $num_mvlans;
  }
  else {
    $t_ports = @lf1_ports + ($num_mvlans);
  }
}
else {
  $t_ports = @lf1_ports + @lf2_ports;
}

my $t_cxtypes = @cx_types;
my $t_urls = @l4_urls;

if (@min_rate != @max_rate ) {
  die("Number of elements in min_rate does not match number of elements in max_rate.");
}
else {
  my $t_rate = @min_rate + @max_rate;
}
if (@min_pkt_szs != @max_pkt_szs ) {
  die("Number of elements in min_pkt_szs does not match number of elements in max_pkt_szs.");
}
else {
  my $t_pkt_szs = @min_pkt_szs + @max_pkt_szs;
}

for ($ni=0; $ni<@cx_types; $ni++) {
  for ($nj=0; $nj<@cxts; $nj++) {
    if ( $cx_types[$ni] eq $cxts[$nj] ) {
      $t_cxts[$nj]++;
    }
  }
}

for ($nj=0; $nj<@cxts; $nj++) {
  if ( $cxts[$nj] eq "l4") {
    $t_num += ($t_ports * (2 * ($t_cxts[$nj] * $t_urls)));
  }
  else {
    $t_num += ($t_ports * (2 * $t_cxts[$nj]));
  }
}
$t_num += $name_id;

my $num_len;
if ($name_id_len) {
  if (length($name_id) > $name_id_len || length($t_num) > $name_id_len) {
    print "\nWARNING: id_len specifies a string length less that first_name_id or less that total number of endpoints\n";
  }
  $num_len = $name_id_len;
}
else {
  $num_len = length ($t_num);
}
$t_num -= $name_id;
$i = 0;
switch ($num_len) {
  case 1 {
    for ($i ; $i<$t_num; $i++) {
      $num[$i] = sprintf("%01d", $name_id + $i);
    }
  }
  case 2 {
    for ($i ; $i<$t_num; $i++) {
      $num[$i] = sprintf("%02d", $name_id + $i);
    }
  }
  case 3 {
    for ($i ; $i<$t_num; $i++) {
      $num[$i] = sprintf("%03d", $name_id + $i);
    }
  }
  case 4 {
    for ($i ; $i<$t_num; $i++) {
      $num[$i] = sprintf("%04d", $name_id + $i);
    }
  }
  case 5 {
    for ($i ; $i<$t_num; $i++) {
      $num[$i] = sprintf("%05d", $name_id + $i);
    }
  }
  case 6 {
    for ($i ; $i<$t_num; $i++) {
      $num[$i] = sprintf("%06d", $name_id + $i);
    }
  }
  else {
    for ($i ; $i<$t_num; $i++) {
      $num[$i] = $name_id + $i;
    }
  }
}
if ($DEBUG > 99) {
  $i = 0;
  print "name_id: $name_id, t_num: $t_num, num_len: $num_len :-\n";
  for ($i ; $i<$t_num; $i++) {
    print $num[$i] . " ";
  }
  print "\n";
  sleep ($D_PAUSE);
}
if ($DEBUG) { printArgs(); sleep ($D_PAUSE); }

# Open connection to the LANforge server.
my $t = new Net::Telnet(Timeout => 15,
                        Prompt => '/default\@btbits\>\>/');

$t->open(Host    => $lfmgr_host,
         Port    => $lfmgr_port,
         Timeout => 60);

$t->waitfor("/btbits\>\>/");
$t->max_buffer_length(1024 * 1024 * 10); # 10M buffer

# Configure our utils.
my $utils = new LANforge::Utils();
$utils->telnet($t);         # Set our telnet object.
$utils->cli_send_silent($quiet_cli_cmds); # Do not show input to CLI
$utils->cli_rcv_silent($quiet_cli_output);  # Repress output from CLI ??

my $dt = getDate();
my $dt_start = $dt;
my $cmd;

my @t_cx_run_loop = ();
my @endpoint_names = (); #will be added to as they are created
my @cx_names = ();
my @ep_delay = ();
my $cx_run = 0;
my $avg_cx_run = 0;
my $t_cx_run = 0;
my $t_prcnt_ep_dly = 0;
my $avg_prcnt_ep_dly = 0;
my $eia = 0;
my $eib = 0;
my $ci = 0;
my $ep_dly_cnt = 0;
my $t_ep_dly_cnt = 0;
my $avg_ep_dly_cnt = 0;
my $prcnt_ep_dly = 0;
my $epa_rx = 0;
my $epb_rx = 0;
my $ep_delay = 0.0;
#my $epa_delay = 0;
#my $epb_delay = 0;
my $epa_drop = 0;
my $epb_drop = 0;
my $t_ep_run = 0;
my $prcnt_ep_dlyd = 0;


if ($init_stop_all) { doCmd("set_cx_state ALL ALL STOPPED"); }

$SIG{'INT'} = 'CLEANUP';

my $loop = 0;
for ($loop = 0; $loop<$loop_max; $loop++) {
  $dt = getDate();
  print "\n\n*****  Starting $script_name at: $dt. Test Loop: ". ($loop+1) . "  *****\n\n";

  if (!$init_once) {
    if ($INIT) { initToDefaults(); }
    
    if ($init_net) {
      addMacVlans();                              # Add MACVLANs.
      initIpAddresses();                          # Add some IP addresses to the ports.
    }
    if ($init_tests) {
      doCmd("rm_cx $test_mgr all");
      doCmd("rm_endp YES_ALL");
      doCmd("rm_test_mgr $test_mgr");    
      doCmd("add_tm $test_mgr");
      doCmd("tm_register $test_mgr default");     # Add default user
      doCmd("tm_register $test_mgr default_gui"); # Add default GUI user    
      addCrossConnects();                         # Add our endpoints.
      print "Done adding CXs.\n";
    }
  }
  elsif ($first_run) {
    if ($INIT) { initToDefaults(); }
    
    if ($init_net) {
      addMacVlans();
      initIpAddresses();
    }
    if ($first_run && $init_tests) {
      doCmd("rm_cx $test_mgr all");
      doCmd("rm_endp YES_ALL");
      doCmd("rm_test_mgr $test_mgr");
      doCmd("add_tm $test_mgr");
      doCmd("tm_register $test_mgr default");     # Add default user
      doCmd("tm_register $test_mgr default_gui"); # Add default GUI user    
      addCrossConnects();                         # Add our endpoints.
      print "Done adding CXs.\n";
    }
    $first_run = 0;
  }
    
  if ($DEBUG) { printArgs(); }
  $dt = getDate();
  print "\n\n*** Started $script_name script at        : $dt_start ***\n"
          . "*** Finished $script_name configuration at: $dt ***\n\n";
  sleep($D_PAUSE);

  if ($create_only == 1) { exit(0); }

  print "Wait $ss_wait seconds for ports to update.\n";
  sleep($ss_wait);
  
  #######################
  # START lf_max_cxs.pl #
  #######################
  # Start Cross-Connects
  my $endp = new LANforge::Endpoint();
  for ($ci=0; $ci<@cx_names; $ci++) {
    $cmd = "set_cx_state $test_mgr " . $cx_names[$ci] . " RUNNING";
    doCmd($cmd);
    $eia = 2 * $ci;
    $eib = $eia + 1;
    
    $ep_delay[$eia] = $ep_delay[$eib] = 0.0;

    # check that the CX is passing packets
    $utils->updateEndpoint($endp, $endpoint_names[$eia]);
    $epa_rx = $endp->rx_pkts();
    
    $utils->updateEndpoint($endp, $endpoint_names[$eib]);
    $epb_rx = $endp->rx_pkts();

    my $slp = 0;
    $ep_delay = 0.0;
#    $epa_delay = $epb_delay = 0;
    while ($epa_rx == 0 || $epb_rx == 0) {
      sleep($settle_time); # sleep to allow CX to connect
      $slp++;
      
      $utils->updateEndpoint($endp, $endpoint_names[$eia]);
      $epa_rx = $endp->rx_pkts();
      
      $utils->updateEndpoint($endp, $endpoint_names[$eib]);
      $epb_rx = $endp->rx_pkts();
      
      if ($slp > $ep_rx_strikes) {
        # too long
        print "WARNING: Waited too long on endpoint $ci to receive packet\n";
        if ($epa_rx == 0) {
          $ep_delay[$eia] = 999999;
        }
        if ($epb_rx == 0) {
          $ep_delay[$eib] = 999999;       
        }
        last; # for $ci
      }
    } # while
    
    $cx_run++;
    if ($DEBUG > 99) {
      print "\n[DEBUG] cx_run: $cx_run\n";
    }
    print "Test Loop: " . ($loop+1) . "\n Processing data for " . ($eib+1) . " endpoints";
    $ep_dly_cnt = 0;
    for ($i=0; $i<=$eib; $i++) {
      print ".";
      # MIGHT MOVE UDP CHECK into loop so that tcp delay and udp loss or delay can be used.
      # if UDP check CX for dropped packets
      if ($use_udp_probe) {
        if ($use_udp_loss) {
          $utils->updateEndpoint($endp, $endpoint_names[0]);
          $epa_drop = $endp->rx_dropped_pkts();
          
          $utils->updateEndpoint($endp, $endpoint_names[1]);
          $epb_drop = $endp->rx_dropped_pkts();
          
          if (($epa_drop || $epb_drop) && $i == 0) { # If there are ANY dropped packets on UDP CX.
            print "DROP ON PROBE ENDPOINT DETECTED";
            if ($end_udp_drop) {
              print "\nSTOP FURTHER PROCESSING !!!\n";
                                                  # Probably should refine this to have a drop threshold.
#            $t_cx_run += $cx_run;                 # Average calculated later.
#            $t_ep_run = $t_cx_run * 2;            # Probably need more or different results now.
                                                  # Might add processing for all UDP CXs....        
            #save ep delays
              last; # not sure but NOT for $i - need the next one to break out of for $i
            }
          }
          #elsif ($ci > 0) {
          #  # Successfully added TCP CX, count it
          #  $cx_run++;
          #}
        }
        # if UDP delay?  Nothing special about delay wrt UDP - just loss is special
      }    
      if ($end_udp_drop && ($epa_drop || $epb_drop)) {
        last; # for $i
      }
      if ($endpoint_names[$eia] eq $endpoint_names[$i] || $endpoint_names[$eib] eq $endpoint_names[$i] ) {
        for ($j=0; $j<$samples; $j++) {
          $utils->updateEndpoint($endp, $endpoint_names[$i]);
          $ep_delay += $endp->avg_latency();
#          $epa_delay += $endp->avg_latency();
#          $utils->updateEndpoint($endp, $endpoint_names[($i+1)]);
#          $epb_delay += $endp->avg_latency();
          if ($DEBUG > 1) {
            print "\n[DEBUG] Sample#" . ($j+1) . ": ". $endpoint_names[$i]     . " - ep_delay +=: $ep_delay ms\n"
#            print "\n[DEBUG] Sample#" . ($j+1) . ": ". $endpoint_names[$i]     . " - epa_delay: $epa_delay\n"
#                  . "[DEBUG] Sample#" . ($j+1) . ": ". $endpoint_names[($i+1)] . " - epb_delay: $epb_delay\n";
          }
          usleep ($sample_time_dly);
        }
        $ep_delay[$i] = $ep_delay / $samples;
      } else {
        $utils->updateEndpoint($endp, $endpoint_names[$i]);
        $ep_delay = $endp->avg_latency();
        $ep_delay[$i] = $ep_delay;
        if ($DEBUG > 1 ) {
          print "\n[DEBUG] Single sample ". $endpoint_names[$i] . " - ep_delay: $ep_delay ms\n";
        }
#        $epa_delay = $endp->avg_latency();
#        $utils->updateEndpoint($endp, $endpoint_names[($i+1)]);
#        $epb_delay = $endp->avg_latency();              
      }
#      $ep_delay[($i+1)] = $epb_delay / $samples;
#      $epa_delay = $epb_delay = 0;
      $ep_delay = 0.0;
#      if ($ep_delay[$i] > $max_delay || $ep_delay[($i+1)] > $max_delay) {
      if ($ep_delay[$i] > $max_delay) {
        $ep_dly_cnt++;
      } # if $ep_delay > $max_delay
    } # for $i Processing endpoint delay data

    if ($end_udp_drop && ($epa_drop || $epb_drop)) {
      print "\nSTOP FURTHER PROCESSING !!!\n";
      last; # for $ci
    }
    
    $prcnt_ep_dly = ($ep_dly_cnt / ($eib+1)) * 100.0;
    if ($prcnt_ep_dly > $percent_ep_delay) {
      $t_cx_run += $cx_run;
      $t_ep_run = $t_cx_run * 2.0;
      $t_ep_dly_cnt += $ep_dly_cnt;
      $t_prcnt_ep_dly += $prcnt_ep_dly;                
      print "\n\n PERCENT DELAY EXCEEDED!!!\n";
      #if ($DEBUG > 99) {
        print "\n";
        for ($i=0; $i<=$eib; $i++) {
          print "  Delay Exceeded, Endpoint: " . $endpoint_names[$i] . ", Delay: ". $ep_delay[$i] . " ms\n";
        }
        print "\n  ep_dly_cnt: $ep_dly_cnt, prcnt_ep_dly: $prcnt_ep_dly%"
            . "\n  loop: $loop"
            . "\n  t_cx_run: $t_cx_run, t_ep_dly_cnt: $t_ep_dly_cnt, t_prcnt_ep_dly: $t_prcnt_ep_dly"
            . "\n";
        sleep ($D_PAUSE);
      #}            
      #$avg_ep_dly_cnt 
      #do something like write out the ep delay data to file
      #wonder if there is a way to use internal perl sort on the delay and still keep the endpoint
      #name correctly indexed.
      
      last; # for $ci
    }    
    # $ep_dly_cnt = 0;  might need to transfer to average ep_dly_cnt for loops.
    #perhaps, do array sort on delays don't see why if were checking for a certain percentage of delayed CXs
    #sort would be slooow and painful
  } #for $ci
  $t_cx_run_loop[$loop] = $cx_run;
  $cx_run = 0;
  if ($keep_running) {
    if ($loop < ($loop_max - 1)) {
      doCmd("set_cx_state $test_mgr ALL STOPPED");
    } else {
      last; # for $loop
    }
  } else {
    doCmd("set_cx_state $test_mgr ALL STOPPED");
  }

  # SHOULD probably get throughput data for each pass
  # need to save off each loops results.
  $epa_drop = $epb_drop = 0;
  doCmd("clear_cx_counters ALL");
} #for $loop_max

#save endpoints delays to file
print "\n\n*** RESULTS ****\n\n";
$loop++;
if ($t_cx_run == 0 && $use_udp_probe) {
  print "$cx_run connections were made.\n";
  print "No dropped packets were detected on the UDP connection.\n";
  print "Try increasing the number of connections.\n";
} 
#elsif ($use_udp_probe) {
#  $avg_cx_run = int($t_cx_run / $loop);
#  print "\n$loop test loops completed.\n"
#      . "Average number of simultaneous connections: $avg_cx_run\n";
#}
elsif ($t_cx_run == 0) {
#  if ($DEBUG) {
  for ($i=0; $i<$loop_max; $i++) {
    print "Loop " . ($i+1) . ": " . $t_cx_run_loop[$i] . " simultaneous connections.\n";
  }
#  }
  print "$cx_run connections were made.\n"
      . "Less than $percent_ep_delay% of endpoints exceeded $max_delay ms of delay.\n"
      . "Actual percentage of endpoints that exceeded $max_delay ms of delay is $prcnt_ep_dly%.\n"
      . "Try increasing the number of connections.\n"; 
}
else {
  $prcnt_ep_dlyd = ($t_ep_dly_cnt / $t_ep_run) * 100.0;
  $avg_cx_run = ($t_cx_run / $loop);
  $avg_ep_dly_cnt = ($t_ep_dly_cnt / $loop);
  $avg_prcnt_ep_dly = ($t_prcnt_ep_dly / $loop);
  my $mean_ep_dly = 0;
  #for ($i=0; $i<=$eib; $i++) {
  #my $t_ep_dly += $_ foreach @ep_delay;
  #my $avg_ep_dly = $t_ep_dly / 
  
  #}
  if ($DEBUG > 1) {
    print "\n";
    for ($i=0; $i<=$eib; $i++) {
      print "[DEBUG] Endpoint: " . $endpoint_names[$i] . " - Delay: ". $ep_delay[$i] . " ms\n";
    }
  }
  for ($i=0; $i<$loop_max; $i++) {
    print "Loop " . ($i+1) . ": " . $t_cx_run_loop[$i] . " simultaneous connections.\n";
  }

  print "\n"
      . "$loop test loops completed.\n\n"
      . "Over $percent_ep_delay% of endpoints exceeded $max_delay ms of delay.\n\n" 
      . "Total number of endpoints that exceeded $max_delay ms is $t_ep_dly_cnt\n"
      . "Total number of endpoints run $t_ep_run\n"
      . "Total percentage of delayed endpoints $prcnt_ep_dlyd%\n\n"
      . "Average number of simultaneous connections per test loop is $avg_cx_run\n"  
      . "Average percentage of endpoints that exceeded $max_delay ms of delay per test loop is $avg_prcnt_ep_dly%\n"
      . "Average number of endpoints exceeding $max_delay ms per test loop is $avg_ep_dly_cnt"  
      . "\n";
}


if ($DEBUG) { printArgs(); }

$dt = getDate();
print "\nStarted $script_name script at  : $dt_start\n";
print   "Completed $script_name script at: $dt\n\n";
exit(0);
#####################
# END lf_macvlan.pl #
#####################
sub CLEANUP {
print "\n\n*** RESULTS ****\n\n";
#save endpoints delays to file
$loop++;
if ($t_cx_run == 0 && $use_udp_probe) {
  print "$cx_run connections were made.\n";
  print "No dropped packets were detected on the UDP connection.\n";
  print "Try increasing the number of connections.\n";
} 
#elsif ($use_udp_probe) {
#  $avg_cx_run = int($t_cx_run / $loop);
#  print "\n$loop test loops completed.\n"
#      . "Average number of simultaneous connections: $avg_cx_run\n";
#}
elsif ($t_cx_run == 0) {
#  if ($DEBUG) {
  for ($i=0; $i<$loop_max; $i++) {
    print "Loop " . ($i+1) . ": " . $t_cx_run_loop[$i] . " simultaneous connections.\n";
  }
#  }
  print "$cx_run connections were made.\n"
      . "Less than $percent_ep_delay% of endpoints exceeded $max_delay ms of delay.\n"
      . "Actual percentage of endpoints that exceeded $max_delay ms of delay is $prcnt_ep_dly%.\n"
      . "Try increasing the number of connections.\n"; 
}
else {
  $prcnt_ep_dlyd = ($t_ep_dly_cnt / $t_ep_run) * 100.0;
  $avg_cx_run = ($t_cx_run / $loop);
  $avg_ep_dly_cnt = ($t_ep_dly_cnt / $loop);
  $avg_prcnt_ep_dly = ($t_prcnt_ep_dly / $loop);
  my $mean_ep_dly = 0;
  #for ($i=0; $i<=$eib; $i++) {
  #my $t_ep_dly += $_ foreach @ep_delay;
  #my $avg_ep_dly = $t_ep_dly / 
  
  #}
  if ($DEBUG > 1) {
    print "\n";
    for ($i=0; $i<=$eib; $i++) {
      print "[DEBUG] Endpoint: " . $endpoint_names[$i] . " - Delay: ". $ep_delay[$i] . " ms\n";
    }
  }
  for ($i=0; $i<$loop_max; $i++) {
    print "Loop " . ($i+1) . ": " . $t_cx_run_loop[$i] . " simultaneous connections.\n";
  }

  print "\n"
      . "$loop test loops completed.\n\n"
      . "Over $percent_ep_delay% of endpoints exceeded $max_delay ms of delay.\n\n" 
      . "Total number of endpoints that exceeded $max_delay ms is $t_ep_dly_cnt\n"
      . "Total number of endpoints run $t_ep_run\n"
      . "Total percentage of delayed endpoints $prcnt_ep_dlyd%\n\n"
      . "Average number of simultaneous connections per test loop is $avg_cx_run\n"  
      . "Average percentage of endpoints that exceeded $max_delay ms of delay per test loop is $avg_prcnt_ep_dly%\n"
      . "Average number of endpoints exceeding $max_delay ms per test loop is $avg_ep_dly_cnt"  
      . "\n";
}


if ($DEBUG) { printArgs(); }

$dt = getDate();
print "\nStarted $script_name script at  : $dt_start\n";
print   "Exited $script_name script at: $dt\n\n";

exit (0);
} # CLEANUP


sub addCrossConnects {
  my $ep = 0;
  my $cx = 0;
  my $i = 0;
  my $szs = 0;
  my $r = 0;
  my @all_ports1 = @lf1_ports;
  my @all_ports2 = ("");
  my $j;
  my $pname;

  if ($foundL4) {  
    my $p1 = new LANforge::Port();
    my $q;
    for ($q = $start_mvlan; $q<($num_mvlans + $start_mvlan); $q++) {
      for ($j = 0; $j<@lf1_ports; $j++) {
        $utils->updatePort($p1, $shelf, $lf1, $lf1_ports[$j]);
        $pname = $p1->{dev};
        @all_ports1 = (@all_ports1, "$pname\#$q");
      }
    }
    if ($ignore_phys_ports) {
      for ($j = 0; $j<@lf1_ports; $j++) {
        shift(@all_ports1);
      }
    }
  }
  else {
    for ($j = 0; $j<@lf1_ports; $j++) {
      my $p1 = new LANforge::Port();
      $utils->updatePort($p1, $shelf, $lf1, $lf1_ports[$j]);
      $pname = $p1->{dev};
      my $q;
      for ($q = $start_mvlan; $q<($num_mvlans + $start_mvlan); $q++) {
        @all_ports1 = (@all_ports1, "$pname\#$q");
      }
    }

    @all_ports2 = @lf2_ports;
    for ($j = 0; $j<@lf2_ports; $j++) {
      my $p1 = new LANforge::Port();
      $utils->updatePort($p1, $shelf, $lf2, $lf2_ports[$j]);
      $pname = $p1->{dev};
      my $q;
      for ($q = $start_mvlan; $q<($num_mvlans + $start_mvlan); $q++) {
        @all_ports2 = (@all_ports2, "$pname\#$q");
      }
    }
    if ($ignore_phys_ports) {
      for ($j = 0; $j<@lf1_ports; $j++) {
       shift(@all_ports1);
      }
      for ($j = 0; $j<@lf2_ports; $j++) {
        shift(@all_ports2);
      }
    }
  }
      
  print "\nCreating endpoints on " . @all_ports1 . " ports:\nall_ports1: " . join(" ", @all_ports1);
  
#  if ($lf2orig ne "") {
    print "\nCreating endpoints on " . @all_ports2 . " ports:\nall_ports2: " . join(" ", @all_ports2) . "\n\n";
#  }

if ($DEBUG) { sleep($D_PAUSE); }

  if ($one_cx_per_port) {
    my $j = 0;
    my $cxcnt = 0;
    my $fecnt = 0;
    for ($j ; $j<@all_ports1; $j++) {
      my $i = $cxcnt % @cx_types;
      $cxcnt++;

      my $cxt = $cx_types[$i];
      if ($cxt eq "l4") {
        # Create layer-4 endpoint

        my $ep1 = "L4-${num[$ep]}";
#        $ep++;
        my $ep2 = "D_L4-${num[$ep]}";
        $ep++;

        @endpoint_names = (@endpoint_names, $ep1, $ep2);

        # Add the dummy endpoint
        my $cmd = "add_l4_endp $ep2 $shelf $lf1 " . $all_ports1[$j]
                   . " l4_generic  0 0 0 ' ' ' '";
        doCmd($cmd);
        $cmd = "set_endp_flag $ep2 unmanaged 1";
        doCmd($cmd);

        if ($l4_dl_path = "/dev/null") {
          $cmd = "add_l4_endp $ep1 $shelf $lf1 " . $all_ports1[$j]
                  . " l4_generic 0 $l4_timeout $urls_10m 'dl ${l4_urls[0]} $l4_dl_path' ' '";
        }
        else {
          $cmd = "add_l4_endp $ep1 $shelf $lf1 " . $all_ports1[$j]
                  . " l4_generic 0 $l4_timeout $urls_10m 'dl ${l4_urls[0]} $l4_dl_path/$ep1' ' '";
        }
        doCmd($cmd);

        # Now, add the cross-connects
        my $cx_name = "L4-${num[$cx]}";
        $cmd = "add_cx $cx_name $test_mgr $ep1 $ep2";
        doCmd($cmd);
        doCmd("set_cx_report_timer $test_mgr $cx_name $report_timer");

        $cx++;

        @cx_names = (@cx_names, $cx_name);
      }# if L4
      elsif (($cxt eq "fileIONFS") || ($cxt eq "fileIOCIFS")) {
        # Create File-IO endpoint

        my $FST = "nfs";
        if ($cxt eq "fileIOCIFS") {
          $FST = "cifs";
        }

        my $ep1 = "fe-${num[$fecnt]}";
        my $ep2 = "D_$ep1";
        $fecnt++;
        $ep++;
#        $ep++;

        @endpoint_names = (@endpoint_names, $ep1, $ep2);

        # Add the dummy endpoint
        my $cmd = "add_file_endp $ep2 $shelf $lf1 " . $all_ports1[$j]
                   . " fe_generic $min_rate[$r] $max_rate[$r] $min_rate[$r] $max_rate[$r]"
                   . " increasing $fio_base/$ep2 $ep2";
        doCmd($cmd);
        $cmd = "set_endp_flag $ep2 unmanaged 1";
        doCmd($cmd);

        $cmd = "add_file_endp $ep1 $shelf $lf1 " . $all_ports1[$j]
                   . " fe_generic $min_rate[$r] $max_rate[$r] $min_rate[$r] $max_rate[$r]"
                   . " increasing \'$fio_base/$FST"
                   . "_$all_ports1[$j]" . $fio_targ_dir . "\' $ep1";
        doCmd($cmd);

        $cmd = "set_fe_info $ep1 16384 16384 10 1000000 1000000 \'$fio_base/$FST" . "_$all_ports1[$j]"
                   . $fio_targ_dir . "\' $ep1 $fsrw";
        doCmd($cmd);

        if ($r < (@min_rate - 1)) {
          $r++;
        }
        else {
          $r = 0;
        }

        # Now, add the cross-connects
        my $cx_name = "L4-${num[$cx]}";
        $cmd = "add_cx $cx_name $test_mgr $ep1 $ep2";
        doCmd($cmd);
        doCmd("set_cx_report_timer $test_mgr $cx_name $report_timer");

        $cx++;

        @cx_names = (@cx_names, $cx_name);
      }# elsif FIO
      else {
        # Create L3 endpoint

        my $burst = "NO";
        if ($min_rate[$r] != $max_rate[$r]) {
          $burst = "YES";
        }
        my $szrnd = "NO";
        if ($min_pkt_szs[$szs] != $max_pkt_szs[$szs]) {
          $szrnd = "YES";
        }

        my $pattern = "increasing";
        if ($cx_types[$i] =~ /custom/) {
          $pattern = "custom";
        }

        my $ep1 = "L3e-${num[$ep]}tx";
        $ep++;
        my $ep2 = "L3e-${num[$ep]}rx";
        $ep++;

        @endpoint_names = (@endpoint_names, $ep1, $ep2);

        $cmd = "add_endp $ep1 $shelf $lf1 " . $all_ports1[$j] . " " . @cx_types[$i] .
                  " -1 $burst $min_rate[$r] $max_rate[$r] $szrnd " . $min_pkt_szs[$szs] . " " . $max_pkt_szs[$szs] .
                  " $pattern NO";
        doCmd($cmd);

        if ($lf2 ne "") {
#          die("Must have lf2 defined if using non-l4 endpoints.");
          $cmd = "add_endp $ep2 $shelf $lf2 " . $all_ports2[$j] . " " . @cx_types[$i] .
                 " -1 $burst $min_rate[$r] $max_rate[$r] $szrnd " . $min_pkt_szs[$szs] . " " .
                 $max_pkt_szs[$szs] . " $pattern NO";
        }
        else {
          $cmd = "add_endp $ep2 $shelf $lf1 " . $all_ports1[($j)] . " " . @cx_types[$i] .                     
                 " -1 $burst $min_rate[$r] $max_rate[$r] $szrnd " . $min_pkt_szs[$szs] . " " . $max_pkt_szs[$szs] .
                 " $pattern NO";                                                                                  
        }
        doCmd($cmd);

        if ($szs < (@min_pkt_szs - 1)) { $szs++; }
        else { $szs = 0; }
        if ($r < (@min_rate - 1)) { $r++; }
        else { $r = 0; }

        # Now, add the cross-connects
        my $cx_name = "L3-${num[$cx]}";
        $cmd = "add_cx $cx_name $test_mgr $ep1 $ep2";
        doCmd($cmd);
        doCmd("set_cx_report_timer $test_mgr $cx_name $report_timer");

        $cx++;

        @cx_names = (@cx_names, $cx_name);

        if ($use_udp_probe && $first_run) {
          $first_run = 0;
          # Delete first CX and related Endpoints.
          doCmd("rm_cx $test_mgr $cx_names[0]");
          doCmd("rm_endp $endpoint_names[0]");
          doCmd("rm_endp $endpoint_names[1]");
          
          # Add UDP CX as first CX.

          $cmd = "add_endp $endpoint_names[0] $shelf $lf1 " . $all_ports1[0] . " lf_udp "
               . " -1 $burst $min_rate[0] $max_rate[0] $szrnd " . $min_pkt_szs[0] . " "
               . $max_pkt_szs[0] . " $pattern NO";
          doCmd($cmd);
         
          $cmd = "add_endp $endpoint_names[1] $shelf $lf2 " . $all_ports2[0] . " lf_udp "
            . " -1 $burst $min_rate[0] $max_rate[0] $szrnd " . $min_pkt_szs[0] . " "
            . $max_pkt_szs[0] . " $pattern NO";      
          doCmd($cmd);
          doCmd("add_cx $cx_names[0] $test_mgr $endpoint_names[0] $endpoint_names[1]");
          doCmd("set_cx_report_timer $test_mgr $cx_names[0] 1000");

          if ($DEBUG > 99) { sleep ($D_PAUSE); }
        }
      }# else L3
    }#for all ports
  }#one_cx_per_port = 1
  else {
    my $j = 0;
    my $n = 0;
    my $fecnt = 0;
    for ($j; $j<@all_ports1; $j++) {
      for ($i = 0; $i<@cx_types; $i++) {
        my $cxt = $cx_types[$i];
        if ($cxt eq "l4") {
          # Create layer-4 endpoint
          for ($n = 0; $n<@l4_urls; $n++) {
            my $ep1 = "L4-${num[$ep]}";
#            $ep++;
            my $ep2 = "D_L4-${num[$ep]}";
            $ep++;

            @endpoint_names = (@endpoint_names, $ep1, $ep2);

            # Add the dummy endpoint
            my $cmd = "add_l4_endp $ep2 $shelf $lf1 " . $all_ports1[$j] . " l4_generic  0 0 0 ' ' ' '";
            doCmd($cmd);
            $cmd = "set_endp_flag $ep2 unmanaged 1";
            doCmd($cmd);
            if ($l4_dl_path = "/dev/null") {
              $cmd = "add_l4_endp $ep1 $shelf $lf1 " . $all_ports1[$j]
                      . " l4_generic 0 $l4_timeout $urls_10m 'dl ${l4_urls[$n]} $l4_dl_path' ' '";
            }
            else {
              $cmd = "add_l4_endp $ep1 $shelf $lf1 " . $all_ports1[$j]
                      . " l4_generic 0 $l4_timeout $urls_10m 'dl ${l4_urls[$n]} $l4_dl_path/$ep1' ' '";
            }
            doCmd($cmd);

            # Now, add the cross-connects
            my $cx_name = "L4-${num[$cx]}";
            $cmd = "add_cx $cx_name $test_mgr $ep1 $ep2";
            doCmd($cmd);
            doCmd("set_cx_report_timer $test_mgr $cx_name $report_timer");

            $cx++;

            @cx_names = (@cx_names, $cx_name);
          } #for url_list
        }
        elsif (($cxt eq "fileIONFS") || ($cxt eq "fileIOCIFS")) {
          # Create File-IO endpoint
          my $FST = "nfs";
          if ($cxt eq "fileIOCIFS") {
            $FST = "cifs";
          }

          my $ep1 = "fe-${num[$fecnt]}";
          my $ep2 = "D_$ep1";
          $fecnt++;
          $ep++;
#          $ep++;

          @endpoint_names = (@endpoint_names, $ep1, $ep2);

          # Add the dummy endpoint
          my $cmd = "add_file_endp $ep2 $shelf $lf1 " . $all_ports1[$j]
                    . " fe_generic $min_rate[$r] $max_rate[$r] $min_rate[$r] $max_rate[$r]"
                    . " increasing $fio_base/$ep2 $ep2";
          doCmd($cmd);
          $cmd = "set_endp_flag $ep2 unmanaged 1";
          doCmd($cmd);

          $cmd = "add_file_endp $ep1 $shelf $lf1 " . $all_ports1[$j]
                 . " fe_generic $min_rate[$r] $max_rate[$r] $min_rate[$r] $max_rate[$r]"
                 . " increasing $fio_base/$FST" . "_$all_ports1[$j]" . $fio_targ_dir . " $ep1";
          doCmd($cmd);

          $cmd = "set_fe_info $ep1 16384 16384 10 1000000 1000000 $fio_base/$FST"
                     . "_$all_ports1[$j]" . $fio_targ_dir . " $ep1 $fsrw";
          doCmd($cmd);

          if ($r < (@min_rate - 1)) { $r++; }
          else { $r = 0; }

          # Now, add the cross-connects
          my $cx_name = "L4-${num[$cx]}";
          $cmd = "add_cx $cx_name $test_mgr $ep1 $ep2";
          doCmd($cmd);
          doCmd("set_cx_report_timer $test_mgr $cx_name $report_timer");

          $cx++;

          @cx_names = (@cx_names, $cx_name);
        }
        else {
          # Create L3 endpoint
          
          my $burst = "NO";
          if ($min_rate[$r] != $max_rate[$r]) {
            $burst = "YES";
          }
          my $szrnd = "NO";
          if ($min_pkt_szs[$szs] != $max_pkt_szs[$szs]) {
            $szrnd = "YES";
          }

          my $pattern = "increasing";
          if ($cx_types[$i] =~ /custom/) {
            $pattern = "custom";
          }

          my $ep1 = "L3e-${num[$ep]}tx";
          $ep++;
          my $ep2 = "L3e-${num[$ep]}rx";
          $ep++;

          @endpoint_names = (@endpoint_names, $ep1, $ep2);

          $cmd = "add_endp $ep1 $shelf $lf1 " . $all_ports1[$j] . " " . @cx_types[$i] .
            " -1 $burst $min_rate[$r] $max_rate[$r] $szrnd " . $min_pkt_szs[$szs] . " " . $max_pkt_szs[$szs] .
              " $pattern NO";
          doCmd($cmd);


          if ($lf2 ne "") {
#            die("Must have lf2 defined if using non-l4 endpoints.");
            $cmd = "add_endp $ep2 $shelf $lf2 " . $all_ports2[$j] . " " . @cx_types[$i] .
                   " -1 $burst $min_rate[$r] $max_rate[$r] $szrnd " . $min_pkt_szs[$szs] . " " .
                   $max_pkt_szs[$szs] . " $pattern NO";
          }
          else {
            $cmd = "add_endp $ep2 $shelf $lf1 " . $all_ports1[$j+1] . " " . @cx_types[$i] .                     
                   " -1 $burst $min_rate[$r] $max_rate[$r] $szrnd " . $min_pkt_szs[$szs] . " " . $max_pkt_szs[$szs] .
                   " $pattern NO";
          }
          doCmd($cmd);

          if ($szs < (@min_pkt_szs - 1)) { $szs++; }
          else { $szs = 0; }
          if ($r < (@min_rate - 1)) { $r++; }
          else { $r = 0; }

          # Now, add the cross-connects
          my $cx_name = "L3-${num[$cx]}";
          $cmd = "add_cx $cx_name $test_mgr $ep1 $ep2";
          doCmd($cmd);
          doCmd("set_cx_report_timer $test_mgr $cx_name $report_timer");

          $cx++;

          @cx_names = (@cx_names, $cx_name);
          
          if ($use_udp_probe && $first_run) {
            $first_run = 0;
            # Delete first CX and related Endpoints.
            doCmd("rm_cx $test_mgr $cx_names[0]");
            doCmd("rm_endp $endpoint_names[0]");
            doCmd("rm_endp $endpoint_names[1]");
            
            # Add UDP CX as first CX.

            $cmd = "add_endp $endpoint_names[0] $shelf $lf1 " . $all_ports1[0] . " lf_udp "
                 . " -1 $burst $min_rate[0] $max_rate[0] $szrnd " . $min_pkt_szs[0] . " "
                 . $max_pkt_szs[0] . " $pattern NO";
            doCmd($cmd);
           
            $cmd = "add_endp $endpoint_names[1] $shelf $lf2 " . $all_ports2[0] . " lf_udp "
              . " -1 $burst $min_rate[0] $max_rate[0] $szrnd " . $min_pkt_szs[0] . " "
              . $max_pkt_szs[0] . " $pattern NO";      
            doCmd($cmd);
            doCmd("add_cx $cx_names[0] $test_mgr $endpoint_names[0] $endpoint_names[1]");
            doCmd("set_cx_report_timer $test_mgr $cx_names[0] 1000");
            
            if ($DEBUG > 99) { sleep ($D_PAUSE); }
          }
        }
      }#for cx types
    }#for each port
  }#each cx per port
}#addCrossConnects
sub initToDefaults {
  # Clean up database if stuff exists
  if ($DEBUG) {
    print "\nsub initToDefaults\n";
  }
  doCmd("rm_cx $test_mgr all");
  doCmd("rm_endp YES_ALL");
  doCmd("rm_test_mgr $test_mgr");

  initPortsToDefault();
}#initToDefaults

my $lsb1 = sprintf("%d", $mac1);
my $lsb2 = sprintf("%d", $mac2);
my $lsb3 = sprintf("%d", $mac3);

# Return a unique MAC address using last 3 octets
sub getNextMac {
  $lsb1++;
  if ($lsb1 > 255) {
    $lsb2++;
    $lsb1 = 0;
    if ($lsb2 > 255) {
      $lsb3++;
      $lsb2 = 0;
      if ($lsb3 > 255) {
        print "*** WARNING, MAC address rolling over XX:YY:ZZ:ff:ff:ff ***\n";
        $lsb3 = 0;
      }
    }
  }
  $mac1 = sprintf("%02x", $lsb1);
  $mac2 = sprintf("%02x", $lsb2);
  $mac3 = sprintf("%02x", $lsb3);
  return "$mac3:$mac2:$mac1";
} # getNextMac

sub addMacVlans {
  if ($DEBUG) {
    print "\nsub addMacVlans\n";
  }
  if ($mac_init == 1 ) {
    $lsb1 = sprintf("%d", $mac1);
    $lsb2 = sprintf("%d", $mac2);
    $lsb3 = sprintf("%d", $mac3);
  }
  my $i;
  my $q;
  my $pnum1;
  my $pnum2;
  my $throttle = $script_speed;
  my $since_throttle = 0;
  for ($i = $start_mvlan; $i<($num_mvlans + $start_mvlan); $i++) {
    for ($q = 0; $q<@lf1_ports; $q++) {
      
      $pnum1 = $lf1_ports[$q];
      my $shlf = sprintf("%02x", $shelf);
      my $card = sprintf("%02x", $lf1);
      my $mac_index = getNextMac();
      my $mac_addr = "00:$shlf:$card:$mac_index";
      doCmd("add_mvlan $shelf $lf1 $pnum1 $mac_addr $i");
      
      $pnum2 = $lf2_ports[$q];
      if ($pnum2 ne "") {
        $card = sprintf("%02x", $lf2);
        $mac_index = getNextMac();
        $mac_addr = "00:$shlf:$card:$mac_index";
        doCmd("add_mvlan $shelf $lf2 $pnum2 $mac_addr $i");
      }
      if ($DEBUG > 1) { sleep($D_PAUSE); }

      # Throttle ourself so we don't over-run the poor LANforge system.
      if ($since_throttle++ > $throttle) {
        my $p1 = new LANforge::Port();
        $utils->updatePort($p1, $shelf, $lf1, $pnum1);
        if ($pnum2 ne "") {    
          my $p1 = new LANforge::Port();
          $utils->updatePort($p1, $shelf, $lf2, $pnum2);
        }
        $since_throttle = 0;
      }
    }
  }

  doCmd("probe_ports");

  # Wait until we discover all the ports...

  for ($q = 0; $q<@lf1_ports; $q++) {
    my $p1 = new LANforge::Port();
    $utils->updatePort($p1, $shelf, $lf1, $lf1_ports[$q]);
    my $pname = $p1->{dev};

    my $p2 = new LANforge::Port();
    my $pname2;
    if ($pnum2 ne "") {
      $utils->updatePort($p2, $shelf, $lf2, $lf2_ports[$q]);
      $pname2 = $p2->{dev};
    }
    
    for ($i = $start_mvlan; $i<($num_mvlans + $start_mvlan); $i++) {
      while (1) {
        $utils->updatePort($p1, $shelf, $lf1, "$pname\#$i");
        if ($pnum2 ne "") {
          $utils->updatePort($p2, $shelf, $lf2, "$pname2\#$i");
        }
        if ($p1->isPhantom() || (($pnum2 ne "") && $p2->isPhantom())) {
          sleep(1);
        }
        else {
          last;
        }
      }
    }
  }
}#addMacVlans

# Wait until the system can update a port..
sub throttleCard {
  my $s = shift;
  my $c = shift;
  my $p1 = new LANforge::Port();
  $utils->updatePort($p1, $s, $c, 1);
}#throttle

sub initPortsToDefault {
  clearMacVlanPorts($shelf, $lf1);
  if ($lf2orig ne "") {
    clearMacVlanPorts($shelf, $lf2);
  }

  throttleCard($shelf, $lf1);
  if ($lf2orig ne "") {
    throttleCard($shelf, $lf2);
  }

  # Set all ports we are messing with to known state.
  my $i = 0;
  for ($i = 0; $i<@lf1_ports; $i++) {
    my $tmp = $lf1_ports[$i];
    my $tmp2 = $lf2_ports[$i];
    if ($tmp ne "0") {
      doCmd("set_port $shelf $lf1 $tmp 0.0.0.0 0.0.0.0 0.0.0.0 NA NA NA");
    }
    if ($lf2orig ne "") {
      if ($tmp2 ne "0") {
        doCmd("set_port $shelf $lf2 $tmp2 0.0.0.0 0.0.0.0 0.0.0.0 NA NA NA");
      }
    }
  }
}

sub clearMacVlanPorts {
  my $s = shift;
  my $c = shift;

  my $i;
  my $found_one = 1;
  my @ports = ();
  while ($found_one) {
    $found_one = 0;
    doCmd("probe_ports");
    # Clear out any existing MAC-VLAN ports.
    $utils->error("");
    @ports = $utils->getPortListing($s, $c);
    my $mx = @ports;
    print "Found $mx ports for resource: $shelf.$lf1\n";

    if (($mx == 0) || ($utils->error() =~ /Timed out/g)) {
      # System is too backlogged to answer, wait a bit
      print " Will try listing ports again in a few seconds...system is backlogged now!\n";
      sleep(5);
      $found_one = 1;
      next;
    }

    my $throttle = 0;
    for ($i = 0; $i<$mx; $i++) {
      if ($ports[$i]->isMacVlan()) {
        doCmd($ports[$i]->getDeleteCmd());
        $found_one = 1;
      }
    }
  }
}


sub initIpAddresses {
  # Set all ports we are messing with to known state.
  my $i;
  for ($i = 0; $i<@lf1_ports; $i++) {

#    if ($ip_lsb > 250) {
#      $ip_c++;
#      $ip_lsb = 2;
#    }

    my $ptmp = $lf1_ports[$i];
    my $ptmp2 = $lf2_ports[$i];
#    my $cmd = "";
    if (!$ignore_phys_ports) {
#      $cmd = "set_port $shelf $lf1 $ptmp $ip_base1.$ip_c1.$ip_lsb1 $msk1 " .
#             "$ip_gw1 NA NA NA";
      $cmd = "set_port $shelf $lf1 $ptmp 0.0.0.0 0.0.0.0 0.0.0.0 NA NA NA";
      if ($ptmp ne "") {
        doCmd($cmd);
      }
#      $ip_lsb++;
      if ($ptmp2 ne "") {
#        $cmd = "set_port $shelf $lf2 $tmp2 $ip_base1.$ip_c1.$ip_lsb1 $msk1 " .
#               "$ip_gw1 NA NA NA";
        $cmd = "set_port $shelf $lf2 $ptmp2 0.0.0.0 0.0.0.0 0.0.0.0 NA NA NA";
          doCmd($cmd);
#        $ip_lsb++;
      }
    }
    my $p1 = new LANforge::Port();
    $utils->updatePort($p1, $shelf, $lf1, $ptmp);
    my $pname = $p1->{dev};

    my $q;
    my $throttle = $script_speed;
    my $since_throttle = 0;
 
    for ($q = $start_mvlan; $q<($num_mvlans + $start_mvlan); $q++) {
      $cmd = "set_port $shelf $lf1 $pname\#$q " .
             "$ip_base[$i].$ip_c[$i].$ip_lsb[$i] $msk[$i] " .
             "$ip_gw[$i] NA NA NA";
      doCmd($cmd);
      $ip_lsb[$i]++;
    
      if ($ip_lsb[$i] > 250) {
        $ip_c[$i]++;
        $ip_lsb[$i] = 2;
      }
    
      if ($since_throttle++ > $throttle) {
        my $p1 = new LANforge::Port();
        $utils->updatePort($p1, $shelf, $lf1, "$pname\#$q");
        $since_throttle = 0;
      }
    }
    
#    $ip_lsb++;
    
    if ($ptmp2 ne "") {
    $p1 = new LANforge::Port();
      $utils->updatePort($p1, $shelf, $lf2, $ptmp2);
      $pname = $p1->{dev};
      
      for ($q = $start_mvlan; $q<($num_mvlans + $start_mvlan); $q++) {
        if (@ip_base == 1) {
          $cmd = "set_port $shelf $lf2 $pname\#$q " .
                 "$ip_base[$i].$ip_c[$i].$ip_lsb[$i] $msk[$i] " .
                 "$ip_gw[$i] NA NA NA";                        
          doCmd($cmd);
          $ip_lsb[$i]++;
          
          if ($ip_lsb[$i] > 250) {
            $ip_c[$i]++;
            $ip_lsb[$i] = 2;
          }
        }
        else {
          $cmd = "set_port $shelf $lf2 $pname\#$q " .
                 "$ip_base[$i+1].$ip_c[$i+1].$ip_lsb[$i+1] $msk[$i+1] " .
                 "$ip_gw[$i+1] NA NA NA";                        
          doCmd($cmd);
          $ip_lsb[$i+1]++;
          
          if ($ip_lsb[$i+1] > 250) {
            $ip_c[$i+1]++;
            $ip_lsb[$i+1] = 2;
          }
        }
        if ($since_throttle++ > $throttle) {                   
           my $p1 = new LANforge::Port();                       
           $utils->updatePort($p1, $shelf, $lf2, "$pname\#$q"); 
           $since_throttle = 0;                                 
        } 
      } # for $q
    } # if we have an lf2_ports defined    
  }
}

sub doCmd {
  my $cmd = shift;

  print ">>> $cmd\n";

  $t->print($cmd);
  my @rslt = $t->waitfor('/ \>\>RSLT:(.*)/');
  print "**************\n @rslt ................\n\n";
  sleep($cli_cmd_delay);
}

sub getDate {
  my $date = `date`;
  chomp($date);
  return $date
}

sub printArgs {
  print
    "\n$script_name"
  . "\nModified arguments:"
  . "\ninit: $INIT"
  . "\nmanager: $lfmgr_host\n"
  . "\nlf1: $lf1\nlf2: $lf2\n"
  . "\nlf1_ports: " . join(" ", @lf1_ports)
  . "\nlf2_ports: " . join(" ", @lf2_ports) . "\n"
  . "\nstart_macvlans: $start_mvlan"
  . "\nnum_mvlans: $num_mvlans\n"
  . "\nmin_rates: " . join(" ", @min_rate)
  . "\nmax_rates: " . join(" ", @max_rate) 
  . "\nmin_pkt_sizes: " . join(" ", @min_pkt_szs)
  . "\nmax_pkt_sizes: " . join(" ", @max_pkt_szs) . "\n"
  . "\ncx_types: " . join(" ", @cx_types)
  . "\none_cx_per_port: $one_cx_per_port\n\n"
  . "\n"
  . "Available CX types: " . join(", ", @cxts) . "\n"
  . "Total of each CX type: " . join(", ", @t_cxts) . "\n"
  . "Total number of ports: $t_ports\n"
  . "Total number of urls: " . @l4_urls . "\n"
  . "Total number of endpoints and CXs: $t_num\n"
  . "\n\n";
}

sub printHelp {
  print
    "\n$script_name\n"
  . "USAGE: mgr=[ip-of-mgr] speed=[25|n] slowsys_wait=[0|n] DEBUG=[0|1|2|...] D_PAUSE=[3|n]\n"
  . "       config_once=[0|1] init=[0|1] init_net=[1|0] init_tests=[1|0] exit_running=[0|1]\n"
  . "       test_loops=[3|n] cli_cmd_dly=[0|1] quiet_cli_cmds=[0|1] quiet_cli_output=[0|1]\n"
  . "       test_mgr=\"ben_tm\" first_run=[1|0] rpt_timer=[9000|n]\n"
  . "       first_name_id=[0|n] id_len=[0|n]\n"
  . "       create_only=[0|1] one_cx_per_port=[0|1] ignore_phys_ports=[1|0]\n"
  . "       lf1=X lf2=Y\n"
  . "       lf1_ports=[\"1 2 3\"|\"eth2 eth3\"] lf2_ports=[\"4 5 6\"|\"eth4 eth5\"]\n"
  . "       start_mvl=X num_mvl=X\n"
  . "       mac3=0xf0 mac2=0xbe mac1=0xef\n"
  . "       ip_base=    \"192.168      172.16\"\n"
  . "       ip_c   =          \"2           1\"\n"
  . "       ip_lsb =          \"2           2\"\n"
  . "       ip_msk =\"255.255.0.0 255.255.0.0\"\n"
  . "       ip_gw  =\"192.168.2.1  172.16.1.1\"\n"
  . "       cx_types=\"lf lf_udp lf_tcp custom_udp custom_tcp l4 fileIONFS fileIOCIFS\"\n"
  . "       min_rates=\"9600 56000 128000\" max_rates=\"56000 128000 25600\"\n"
  . "       min_pkt_sizes=\"500 500 500\" max_pkt_sizes=\"1000 1000 1000\"\n"
  . "       url_rate=100 l4_wait=10000\n"
  . "       urls=\"http://www.candelatech.com/file ftp://www.candelatech.com/file https://www.candelatech.com/file\"\n"
  . "       fsrw=[read|write] fio_targ_dir=tmp/ fio_base=/mnt/fio_base\n"
  . "\n";

}

sub handleCmdLineArg {
  my $arg = $_[0];
  my $val = $_[1];

  if ($arg eq "help" || $arg eq "--help" || $arg eq "-h" || $arg eq "-help" || $arg eq "-h" ) {
    printHelp();
    exit(0);
  }
  elsif ($arg eq "debug" || $arg eq "DEBUG") {
    $DEBUG = $val;
  }
  elsif ($arg eq "d_pause" || $arg eq "D_PAUSE") {
    $D_PAUSE = $val;
  }  
  elsif ($arg eq "mgr") {
    $lfmgr_host = $val;
  }
  elsif ($arg eq "test_mgr") {
    $test_mgr = $val;
  }
  elsif ($arg eq "init") {
    $INIT = $val;
  }
  elsif ($arg eq "config_once") {
    $init_once = $val;
  }
  elsif ($arg eq "init_net") {
    $init_net = $val;
  }
  elsif ($arg eq "init_tests") {
    $init_tests = $val;
  }
  elsif ($arg eq "exit_running") {
    $keep_running = $val;
  }
  elsif ($arg eq "test_loops") {
    $loop_max = $val;
  }
  elsif ($arg eq "cli_cmd_dly") {
    $cli_cmd_delay = $val;
  }
  elsif ($arg eq "quiet_cli_cmds") {
    $quiet_cli_cmds = $val;
  }
  elsif ($arg eq "quiet_cli_output") {
    $quiet_cli_output = $val;
  }
  elsif ($arg eq "first_run") {
    $first_run = $val;
  }
  elsif ($arg eq "rpt_timer") {
    $report_timer = $val;
  }  
  elsif ($arg eq "first_name_id") {
    $name_id = $val;
  }
  elsif ($arg eq "id_len") {
    $name_id_len = $val;
    if (length($name_id) > $name_id_len) {
      print "\nWARNING: id_len specifies a string length less that first_name_id.\n";
    }
  }
  elsif ($arg eq "speed") {
    $script_speed = $val;
  }
  elsif ($arg eq "slowsys_wait") {
    $ss_wait = $val;
  }
  elsif ($arg eq "lf1") {
    $lf1 = $val;
  }
  elsif ($arg eq "lf2") {
    $lf2 = $val;
    if ($lf1 == $lf2) {
      die("\nINVALID: First and second resource are the same !!!\n\n");
    }
  }
  elsif ($arg eq "mac3") {
    $mac3 = $val;
  }
  elsif ($arg eq "mac2") {
    $mac2 = $val;
  }
  elsif ($arg eq "mac1") {
    $mac1 = $val;
  }
  elsif ($arg eq "ip_base") {
    @ip_base = split(/ /, $val);
  }
  elsif ($arg eq "ip_c") {
    @ip_c = split(/ /, $val);
  }
  elsif ($arg eq "ip_lsb") {
    @ip_lsb = split(/ /, $val);
  }
  elsif ($arg eq "ip_msk") {
    @msk = split(/ /, $val);
  }
  elsif ($arg eq "ip_gw") {
    @ip_gw = split(/ /, $val);
  }
  elsif ($arg eq "lf1_ports") {
    @lf1_ports = split(/ /, $val);
  }
  elsif ($arg eq "lf2_ports") {
    if ($lf2 == "" || $lf1 == $lf2) {
      die("\nINVALID: Either second resource is not defined\nor first and second resource are the same !!!\n\n");
    }
    else {
      @lf2_ports = split(/ /, $val);
    }
  }
  elsif ($arg eq "cx_types") {
    @cx_types = split(/ /, $val);
  }
  elsif ($arg eq "min_pkt_sizes") {
    @min_pkt_szs = split(/ /, $val);
  }
  elsif ($arg eq "max_pkt_sizes") {
    @max_pkt_szs = split(/ /, $val);
  }
  elsif ($arg eq "start_mvl") {
    $start_mvlan = $val;
  }
  elsif ($arg eq "num_mvl") {
    $num_mvlans = $val;
  }
  elsif ($arg eq "min_rates") {
    @min_rate = split(/ /, $val);
  }
  elsif ($arg eq "max_rates") {
    @max_rate = split(/ /, $val);
  }  
  elsif ($arg eq "fsrw") {
    $fsrw = $val;
  }
  elsif ($arg eq "fio_base") {
    $fio_base = $val;
  }
  elsif ($arg eq "fio_targ_dir") {
    $fio_targ_dir = $val;
  }
  elsif ($arg eq "urls") {
    @l4_urls = split(/ /, $val);
  }
  elsif ($arg eq "url_rate") {
    $urls_10m = $val;
  }
  elsif ($arg eq "l4_wait") {
    $l4_timeout = $val;
  }
  elsif ($arg eq "one_cx_per_port") {
    $one_cx_per_port = $val;
  }
  elsif ($arg eq "ignore_phys_ports") {
    $ignore_phys_ports = $val;
  }  
  elsif ($arg eq "create_only") {
    $create_only = $val;
  }
  else {
    print "\n\nCould not parse one or more of the arguments !!!\n"
            . "First rejected argument: $arg\n";
    printHelp();
    exit(1);
  }
}