iperf: Add major version 3

pkgs/tools/networking/iperf/3.nix

@@ -0,0 +1,22 @@
+{ stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  name = "iperf-3.0.8";
+
+  src = fetchurl {
+    url = "http://downloads.es.net/pub/iperf/${name}.tar.gz";
+    sha256 = "81b8d91159862896c57f9b90a006e8b5dc22bd94175d97bd0db50b0ae2c1a78e";
+  };
+
+  postInstall = ''
+    ln -s iperf3 $out/bin/iperf
+  '';
+
+  meta = with stdenv.lib; {
+    homepage = http://software.es.net/iperf/; 
+    description = "Tool to measure IP bandwidth using UDP or TCP";
+    platforms = platforms.unix;
+    license = "as-is";
+    maintainers = with maintainers; [ wkennington ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -1433,7 +1433,9 @@ let
 
   iodine = callPackage ../tools/networking/iodine { };
 
-  iperf = callPackage ../tools/networking/iperf { };
+  iperf2 = callPackage ../tools/networking/iperf/2.nix { };
+  iperf3 = callPackage ../tools/networking/iperf/3.nix { };
+  iperf = iperf3;
 
   ipmitool = callPackage ../tools/system/ipmitool {
     static = false;