Initial attempt at mips64

Makefile

@@ -3,7 +3,7 @@ BUILD_NUMBER ?= dev+$(shell date -u '+%Y%m%d%H%M%S')
 GO111MODULE = on
 export GO111MODULE
 
-all: bin-linux bin-arm bin-arm6 bin-arm64 bin-darwin bin-windows
+all: bin-linux bin-arm bin-arm6 bin-arm64 bin-darwin bin-windows bin-mips64
 
 bin:
 	go build -ldflags "-X main.Build=$(BUILD_NUMBER)" -o ./nebula ${NEBULA_CMD_PATH}
@@ -47,6 +47,11 @@ bin-linux:
 	GOARCH=amd64 GOOS=linux go build -o build/linux/nebula -ldflags "-X main.Build=$(BUILD_NUMBER)" ${NEBULA_CMD_PATH}
 	GOARCH=amd64 GOOS=linux go build -o build/linux/nebula-cert -ldflags "-X main.Build=$(BUILD_NUMBER)" ./cmd/nebula-cert
 
+bin-mips64:
+	mkdir -p build/mips64
+	GOARCH=mips64 GOOS=linux go build -o build/mips64/nebula -ldflags "-X main.Build=$(BUILD_NUMBER)" ./cmd/nebula
+	GOARCH=mips64 GOOS=linux go build -o build/mips64/nebula-cert -ldflags "-X main.Build=$(BUILD_NUMBER)" ./cmd/nebula-cert
+
 release: all
 	tar -zcv -C build/arm/ -f nebula-linux-arm.tar.gz nebula nebula-cert
 	tar -zcv -C build/arm6/ -f nebula-linux-arm6.tar.gz nebula nebula-cert
@@ -54,6 +59,7 @@ release: all
 	tar -zcv -C build/darwin/ -f nebula-darwin-amd64.tar.gz nebula nebula-cert
 	tar -zcv -C build/windows/ -f nebula-windows-amd64.tar.gz nebula.exe nebula-cert.exe
 	tar -zcv -C build/linux/ -f nebula-linux-amd64.tar.gz nebula nebula-cert
+	tar -zcv -C build/mips64/ -f nebula-linux-mips64.tar.gz nebula nebula-cert
 
 vet:
 	go vet -v ./...

udp_linux_mips64.go

@@ -0,0 +1,50 @@
+package nebula
+
+import "unsafe"
+
+type iovec struct {
+	Base *byte
+	Len  uint64
+}
+
+type msghdr struct {
+	Name       *byte
+	Namelen    uint32
+	Pad0       [4]byte
+	Iov        *iovec
+	Iovlen     uint64
+	Control    *byte
+	Controllen uint64
+	Flags      int32
+	Pad1       [4]byte
+}
+
+type rawMessage struct {
+	Hdr  msghdr
+	Len  uint32
+	Pad0 [4]byte
+}
+
+func (u *udpConn) PrepareRawMessages(n int) ([]rawMessage, [][]byte, [][]byte) {
+	msgs := make([]rawMessage, n)
+	buffers := make([][]byte, n)
+	names := make([][]byte, n)
+
+	for i := range msgs {
+		buffers[i] = make([]byte, mtu)
+		names[i] = make([]byte, 0x1c) //TODO = sizeofSockaddrInet6
+
+		//TODO: this is still silly, no need for an array
+		vs := []iovec{
+			{Base: (*byte)(unsafe.Pointer(&buffers[i][0])), Len: uint64(len(buffers[i]))},
+		}
+
+		msgs[i].Hdr.Iov = &vs[0]
+		msgs[i].Hdr.Iovlen = uint64(len(vs))
+
+		msgs[i].Hdr.Name = (*byte)(unsafe.Pointer(&names[i][0]))
+		msgs[i].Hdr.Namelen = uint32(len(names[i]))
+	}
+
+	return msgs, buffers, names
+}