1 files changed, 26 insertions, 8 deletions

diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index fab7dc73f738..0e266c2d0e7f 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -1091,6 +1091,29 @@ struct nft_rule_blob {
 		__attribute__((aligned(__alignof__(struct nft_rule_dp))));
 };
 
+enum nft_chain_types {
+	NFT_CHAIN_T_DEFAULT = 0,
+	NFT_CHAIN_T_ROUTE,
+	NFT_CHAIN_T_NAT,
+	NFT_CHAIN_T_MAX
+};
+
+/**
+ *	struct nft_chain_validate_state - validation state
+ *
+ *	If a chain is encountered again during table validation it is
+ *	possible to avoid revalidation provided the calling context is
+ *	compatible.  This structure stores relevant calling context of
+ *	previous validations.
+ *
+ *	@hook_mask: the hook numbers and locations the chain is linked to
+ *	@depth: the deepest call chain level the chain is linked to
+ */
+struct nft_chain_validate_state {
+	u8			hook_mask[NFT_CHAIN_T_MAX];
+	u8			depth;
+};
+
 /**
  *	struct nft_chain - nf_tables chain
  *
@@ -1109,6 +1132,7 @@ struct nft_rule_blob {
  *	@udlen: user data length
  *	@udata: user data in the chain
  *	@blob_next: rule blob pointer to the next in the chain
+ *	@vstate: validation state
  */
 struct nft_chain {
 	struct nft_rule_blob		__rcu *blob_gen_0;
@@ -1128,9 +1152,10 @@ struct nft_chain {
 
 	/* Only used during control plane commit phase: */
 	struct nft_rule_blob		*blob_next;
+	struct nft_chain_validate_state vstate;
 };
 
-int nft_chain_validate(const struct nft_ctx *ctx, const struct nft_chain *chain);
+int nft_chain_validate(const struct nft_ctx *ctx, struct nft_chain *chain);
 int nft_setelem_validate(const struct nft_ctx *ctx, struct nft_set *set,
 			 const struct nft_set_iter *iter,
 			 struct nft_elem_priv *elem_priv);
@@ -1138,13 +1163,6 @@ int nft_set_catchall_validate(const struct nft_ctx *ctx, struct nft_set *set);
 int nf_tables_bind_chain(const struct nft_ctx *ctx, struct nft_chain *chain);
 void nf_tables_unbind_chain(const struct nft_ctx *ctx, struct nft_chain *chain);
 
-enum nft_chain_types {
-	NFT_CHAIN_T_DEFAULT = 0,
-	NFT_CHAIN_T_ROUTE,
-	NFT_CHAIN_T_NAT,
-	NFT_CHAIN_T_MAX
-};
-
 /**
  * 	struct nft_chain_type - nf_tables chain type info
  *