nft: support listing expressions that use non-byte header fields

This allows to list rules that check fields that are not aligned on byte
boundary.

Signed-off-by: Florian Westphal <fw@strlen.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/payload.h b/include/payload.h
index 95364af1..ca9b0138 100644
--- a/include/payload.h
+++ b/include/payload.h
@@ -19,7 +19,10 @@ extern bool payload_is_adjacent(const struct expr *e1, const struct expr *e2);
 extern struct expr *payload_expr_join(const struct expr *e1,
 				      const struct expr *e2);
 
+bool payload_expr_trim(struct expr *expr, struct expr *mask,
+		       const struct proto_ctx *ctx);
 extern void payload_expr_expand(struct list_head *list, struct expr *expr,
+				struct expr *mask,
 				const struct proto_ctx *ctx);
 extern void payload_expr_complete(struct expr *expr,
 				  const struct proto_ctx *ctx);