X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=mbd%2Fmbd.pl;fp=mbd%2Fmbd.pl;h=fe89d49edfcfa0810f0a8c3abc6770698d4bd812;hb=b06be4a65b35cf2b38e240edaaf1225d945c22ed;hp=7fcc8d8100a3a67e6e2f41bd763d797c684e4a06;hpb=79467e2953b1c64668151dd09a1421f06334c0d7;p=nms

diff --git a/mbd/mbd.pl b/mbd/mbd.pl
index 7fcc8d8..fe89d49 100644
--- a/mbd/mbd.pl
+++ b/mbd/mbd.pl
@@ -16,6 +16,28 @@ sub fhbits {
 	return $bits;
 }
 
+my %cidrcache = ();
+sub cache_cidrlookup {
+	my ($addr, $net) = @_;
+	my $key = $addr . " " . $net;
+
+	if (!exists($cidrcache{$key})) {
+		$cidrcache{$key} = Net::CIDR::cidrlookup($addr, $net);
+	}
+	return $cidrcache{$key};
+}
+
+my %rangecache = ();
+sub cache_cidrrange {
+	my ($net) = @_;
+
+	if (!exists($rangecache{$net})) {
+		($rangecache{$net}) = Net::CIDR::cidr2range($net);
+	}
+
+	return $rangecache{$net};
+}
+
 open LOG, ">>", "mbd.log";
 
 my @ports = mbd::find_all_ports();
@@ -73,9 +95,9 @@ while (1) {
 		next unless $pass;
 
 		for my $net (@Config::networks) {
-			next if (Net::CIDR::cidrlookup(inet_ntoa($saddr), $net));
+			next if (cache_cidrlookup(inet_ntoa($saddr), $net));
 
-			my ($range) = Net::CIDR::cidr2range($net);
+			my ($range) = cache_cidrrange($net);
 			$range =~ /-(.*?)$/;
 			my $broadcast = $1;