libxt_statistic: streamline and document possible placement of negation
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
diff --git a/extensions/libxt_statistic.c b/extensions/libxt_statistic.c
index b4171b1..bce83fa 100644
--- a/extensions/libxt_statistic.c
+++ b/extensions/libxt_statistic.c
@@ -15,9 +15,9 @@
"statistic match options:\n"
" --mode mode Match mode (random, nth)\n"
" random mode:\n"
-" --probability p Probability\n"
+"[!] --probability p Probability\n"
" nth mode:\n"
-" --every n Match every nth packet\n"
+"[!] --every n Match every nth packet\n"
" --packet p Initial counter value (0 <= p <= n-1, default 0)\n");
}
@@ -125,16 +125,17 @@
static void print_match(const struct xt_statistic_info *info, char *prefix)
{
- if (info->flags & XT_STATISTIC_INVERT)
- printf(" !");
-
switch (info->mode) {
case XT_STATISTIC_MODE_RANDOM:
- printf( "%smode random %sprobability %f", prefix, prefix,
+ printf(" %smode random%s %sprobability %f", prefix,
+ (info->flags & XT_STATISTIC_INVERT) ? " !" : "",
+ prefix,
1.0 * info->u.random.probability / 0x80000000);
break;
case XT_STATISTIC_MODE_NTH:
- printf(" %smode nth %severy %u", prefix, prefix,
+ printf(" %smode nth%s %severy %u", prefix,
+ (info->flags & XT_STATISTIC_INVERT) ? " !" : "",
+ prefix,
info->u.nth.every + 1);
if (info->u.nth.packet)
printf(" %spacket %u", prefix, info->u.nth.packet);
diff --git a/extensions/libxt_statistic.man b/extensions/libxt_statistic.man
index 8fc3b29..4947daf 100644
--- a/extensions/libxt_statistic.man
+++ b/extensions/libxt_statistic.man
@@ -11,13 +11,13 @@
and
.B nth.
.TP
-\fB\-\-probability\fP \fIp\fP
+[\fB!\fP] \fB\-\-probability\fP \fIp\fP
Set the probability from 0 to 1 for a packet to be randomly
matched. It works only with the
.B random
mode.
.TP
-\fB\-\-every\fP \fIn\fP
+[\fB!\fP] \fB\-\-every\fP \fIn\fP
Match one packet every nth packet. It works only with the
.B nth
mode (see also the
