nfnetlink_log: do not expose NFULNL_COPY_DISABLED to user-space

This patch moves NFULNL_COPY_PACKET definition from
linux/netfilter/nfnetlink_log.h to net/netfilter/nfnetlink_log.h
since this copy mode is only for internal use.

I have also changed the value from 0x03 to 0xff. Thus, we avoid
a gap from user-space that may confuse users if we add new
copy modes in the future.

This change was introduced in:
http://www.spinics.net/lists/netfilter-devel/msg13535.html

Since this change is not included in any stable Linux kernel,
I think it's safe to make this change now. Anyway, this copy
mode does not make any sense from user-space, so this patch
should not break any existing setup.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>

include/linux/netfilter/nfnetlink_log.h

@@ -89,7 +89,7 @@ enum nfulnl_attr_config {
 #define NFULNL_COPY_NONE	0x00
 #define NFULNL_COPY_META	0x01
 #define NFULNL_COPY_PACKET	0x02
-#define NFULNL_COPY_DISABLED	0x03
+/* 0xff is reserved, don't use it for new copy modes. */
 
 #define NFULNL_CFG_F_SEQ	0x0001
 #define NFULNL_CFG_F_SEQ_GLOBAL	0x0002

include/net/netfilter/nfnetlink_log.h

@@ -10,5 +10,7 @@ nfulnl_log_packet(u_int8_t pf,
 		  const struct nf_loginfo *li_user,
 		  const char *prefix);
 
+#define NFULNL_COPY_DISABLED    0xff
+
 #endif /* _KER_NFNETLINK_LOG_H */