netfilter: nfnetlink_osf: add missing enum in nfnetlink_osf uapi header

xt_osf_window_size_options was originally part of
include/uapi/linux/netfilter/xt_osf.h, restore it.

Fixes: bfb15f2a95 ("netfilter: extract Passive OS fingerprint infrastructure from xt_osf")
Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

include/linux/netfilter/nfnetlink_osf.h

@@ -4,18 +4,6 @@
 
 #include <uapi/linux/netfilter/nfnetlink_osf.h>
 
-/* Initial window size option state machine: multiple of mss, mtu or
- * plain numeric value. Can also be made as plain numeric value which
- * is not a multiple of specified value.
- */
-enum nf_osf_window_size_options {
-	OSF_WSS_PLAIN   = 0,
-	OSF_WSS_MSS,
-	OSF_WSS_MTU,
-	OSF_WSS_MODULO,
-	OSF_WSS_MAX,
-};
-
 enum osf_fmatch_states {
 	/* Packet does not match the fingerprint */
 	FMATCH_WRONG = 0,

include/uapi/linux/netfilter/nfnetlink_osf.h

@@ -88,6 +88,18 @@ enum iana_options {
 	OSFOPT_EMPTY = 255,
 };
 
+/* Initial window size option state machine: multiple of mss, mtu or
+ * plain numeric value. Can also be made as plain numeric value which
+ * is not a multiple of specified value.
+ */
+enum nf_osf_window_size_options {
+	OSF_WSS_PLAIN	= 0,
+	OSF_WSS_MSS,
+	OSF_WSS_MTU,
+	OSF_WSS_MODULO,
+	OSF_WSS_MAX,
+};
+
 enum nf_osf_attr_type {
 	OSF_ATTR_UNSPEC,
 	OSF_ATTR_FINGER,

include/uapi/linux/netfilter/xt_osf.h

@@ -46,6 +46,7 @@
 #define xt_osf_finger		nf_osf_finger
 #define xt_osf_nlmsg		nf_osf_nlmsg
 
+#define xt_osf_window_size_options	nf_osf_window_size_options
 #define xt_osf_attr_type	nf_osf_attr_type
 #define xt_osf_msg_types	nf_osf_msg_types