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>

2 files changed, 3 insertions, 1 deletions

diff --git a/include/linux/netfilter/nfnetlink_log.h b/include/linux/netfilter/nfnetlink_log.h
index 1d0b84aa1d42..ea9b8d380527 100644
--- a/include/linux/netfilter/nfnetlink_log.h
+++ b/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
diff --git a/include/net/netfilter/nfnetlink_log.h b/include/net/netfilter/nfnetlink_log.h
index b0569ff0775e..e2dec42c2db2 100644
--- a/include/net/netfilter/nfnetlink_log.h
+++ b/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 */