src: add NFT_CTX_OUTPUT_NUMERIC_PROTO

We keep printing layer 4 protocols as literals since we do not use
/etc/protocols. This new flag allows us to print it as a number.

libnftables internally uses this to print layer 4 protocol as numbers
when part of a range.

Acked-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/nftables.h b/include/nftables.h
index 2dff07fe..d0031e84 100644
--- a/include/nftables.h
+++ b/include/nftables.h
@@ -63,6 +63,11 @@ static inline bool nft_output_guid(const struct output_ctx *octx)
 	return octx->flags & NFT_CTX_OUTPUT_GUID;
 }
 
+static inline bool nft_output_numeric_proto(const struct output_ctx *octx)
+{
+	return octx->flags & NFT_CTX_OUTPUT_NUMERIC_PROTO;
+}
+
 struct nft_cache {
 	uint16_t		genid;
 	struct list_head	list;