diff --git a/unix/syscall_linux_arm.go b/unix/syscall_linux_arm.go
index 6887772..39a864d 100644
--- a/unix/syscall_linux_arm.go
+++ b/unix/syscall_linux_arm.go
@@ -256,6 +256,10 @@
 	cmsg.Len = uint32(length)
 }
 
+func (rsa *RawSockaddrNFCLLCP) SetServiceNameLen(length int) {
+	rsa.Service_name_len = uint32(length)
+}
+
 //sys	poll(fds *PollFd, nfds int, timeout int) (n int, err error)
 
 func Poll(fds []PollFd, timeout int) (n int, err error) {