cache: prepare nft_cache_evaluate() to return error

Move flags as parameter reference and add list of error messages to prepare
for sanity checks.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/include/cache.h b/include/cache.h
index b6c7d48b..575381ef 100644
--- a/include/cache.h
+++ b/include/cache.h
@@ -65,8 +65,9 @@ struct nft_cache_filter {
 struct nft_cache;
 enum cmd_ops;
 
-unsigned int nft_cache_evaluate(struct nft_ctx *nft, struct list_head *cmds,
-				struct nft_cache_filter *filter);
+int nft_cache_evaluate(struct nft_ctx *nft, struct list_head *cmds,
+		       struct list_head *msgs, struct nft_cache_filter *filter,
+		       unsigned int *flags);
 int nft_cache_update(struct nft_ctx *ctx, enum cmd_ops cmd,
 		     struct list_head *msgs,
 		     const struct nft_cache_filter *filter);