netfilter: xtables: mark initial tables constant

The inputted table is never modified, so should be considered const.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>

1 files changed, 4 insertions, 3 deletions

diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index 025d1a0af78b..a6ac83a93348 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -736,16 +736,17 @@ xt_replace_table(struct xt_table *table,
 }
 EXPORT_SYMBOL_GPL(xt_replace_table);
 
-struct xt_table *xt_register_table(struct net *net, struct xt_table *table,
+struct xt_table *xt_register_table(struct net *net,
+                                   const struct xt_table *input_table,
                                    struct xt_table_info *bootstrap,
                                    struct xt_table_info *newinfo)
 {
         int ret;
         struct xt_table_info *private;
-        struct xt_table *t;
+        struct xt_table *t, *table;
 
         /* Don't add one object to multiple lists. */
-        table = kmemdup(table, sizeof(struct xt_table), GFP_KERNEL);
+        table = kmemdup(input_table, sizeof(struct xt_table), GFP_KERNEL);
         if (!table) {
                 ret = -ENOMEM;
                 goto out;