File knock-include.patch of Package knock

--- src/knockd.c
+++ src/knockd.c
@@ -41,6 +41,7 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <sys/ioctl.h>
+#include <sys/param.h>
 #include <arpa/inet.h>
 #include <netdb.h>
 #include <getopt.h>