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Centralize initialization of scan_performance_vars.

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david
2011-12-31 21:59:52 +00:00
parent 24e02a9a1a
commit e962f1c5fe
4 changed files with 42 additions and 56 deletions
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29
timing.cc
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@@ -229,6 +229,35 @@ void enforce_scan_delay(struct timeval *tv) {
return;
}
/* Do initialization after the global NmapOps table has been filled in. */
void scan_performance_vars::init() {
/* TODO: I should revisit these values for tuning. They should probably
at least be affected by -T. */
low_cwnd = MAX(o.min_parallelism, 1);
max_cwnd = o.max_parallelism? o.max_parallelism : 300;
group_initial_cwnd = box(o.min_parallelism, max_cwnd, 10);
host_initial_cwnd = group_initial_cwnd;
slow_incr = 1;
/* The congestion window grows faster with more aggressive timing. */
if (o.timing_level < 4)
ca_incr = 1;
else
ca_incr = 2;
cc_scale_max = 50;
initial_ssthresh = 75;
group_drop_cwnd_divisor = 2.0;
/* Change the amount that ssthresh drops based on the timing level. */
double ssthresh_divisor;
if (o.timing_level <= 3)
ssthresh_divisor = (3.0 / 2.0);
else if (o.timing_level <= 4)
ssthresh_divisor = (4.0 / 3.0);
else
ssthresh_divisor = (5.0 / 4.0);
group_drop_ssthresh_divisor = ssthresh_divisor;
host_drop_ssthresh_divisor = ssthresh_divisor;
}
/* current_rate_history defines how far back (in seconds) we look when
calculating the current rate. */
RateMeter::RateMeter(double current_rate_history) {