From ad40f1baa52dcacad78939031d1a0b2b3afe2753 Mon Sep 17 00:00:00 2001
From: crusader <crusader@loafle.com>
Date: Mon, 11 Sep 2017 16:42:19 +0900
Subject: [PATCH] mac util

---
 net/converter/mac.go | 43 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 net/converter/mac.go

diff --git a/net/converter/mac.go b/net/converter/mac.go
new file mode 100644
index 0000000..63b785c
--- /dev/null
+++ b/net/converter/mac.go
@@ -0,0 +1,43 @@
+package converter
+
+import (
+	"net"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+var (
+	macStripRegexp = regexp.MustCompile(`[^a-fA-F0-9]`)
+)
+
+func MacToUint(hwAddr net.HardwareAddr) (uint64, error) {
+	mac := hwAddr.String()
+	hex := macStripRegexp.ReplaceAllLiteralString(mac, "")
+
+	return strconv.ParseUint(hex, 16, 64)
+}
+
+func MacToInt(IPv4Addr net.HardwareAddr) int64 {
+	bits := strings.Split(IPv4Addr.String(), ":")
+
+	b0, _ := strconv.ParseInt(bits[0], 16, 64)
+	b1, _ := strconv.ParseInt(bits[1], 16, 64)
+	b2, _ := strconv.ParseInt(bits[2], 16, 64)
+	b3, _ := strconv.ParseInt(bits[3], 16, 64)
+	b4, _ := strconv.ParseInt(bits[4], 16, 64)
+	b5, _ := strconv.ParseInt(bits[5], 16, 64)
+
+	var sum int64
+
+	//52242420297
+	//52242420297
+	sum += int64(b0) << 40
+	sum += int64(b1) << 32
+	sum += int64(b2) << 24
+	sum += int64(b3) << 16
+	sum += int64(b4) << 8
+	sum += int64(b5)
+
+	return sum
+}