From c078ca3b0c5bf82c2b31906c446d6e2ad8ea0783 Mon Sep 17 00:00:00 2001 From: Phil Sutter Date: Tue, 17 Jan 2017 22:51:26 +0100 Subject: netfilter: nft_exthdr: Add support for existence check If NFT_EXTHDR_F_PRESENT is set, exthdr will not copy any header field data into *dest, but instead set it to 1 if the header is found and 0 otherwise. Signed-off-by: Phil Sutter Signed-off-by: Pablo Neira Ayuso --- include/uapi/linux/netfilter/nf_tables.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include/uapi/linux/netfilter/nf_tables.h') diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h index 7b730cab99bd..53aac8b8ed6b 100644 --- a/include/uapi/linux/netfilter/nf_tables.h +++ b/include/uapi/linux/netfilter/nf_tables.h @@ -704,6 +704,10 @@ enum nft_payload_attributes { }; #define NFTA_PAYLOAD_MAX (__NFTA_PAYLOAD_MAX - 1) +enum nft_exthdr_flags { + NFT_EXTHDR_F_PRESENT = (1 << 0), +}; + /** * enum nft_exthdr_attributes - nf_tables IPv6 extension header expression netlink attributes * @@ -711,6 +715,7 @@ enum nft_payload_attributes { * @NFTA_EXTHDR_TYPE: extension header type (NLA_U8) * @NFTA_EXTHDR_OFFSET: extension header offset (NLA_U32) * @NFTA_EXTHDR_LEN: extension header length (NLA_U32) + * @NFTA_EXTHDR_FLAGS: extension header flags (NLA_U32) */ enum nft_exthdr_attributes { NFTA_EXTHDR_UNSPEC, @@ -718,6 +723,7 @@ enum nft_exthdr_attributes { NFTA_EXTHDR_TYPE, NFTA_EXTHDR_OFFSET, NFTA_EXTHDR_LEN, + NFTA_EXTHDR_FLAGS, __NFTA_EXTHDR_MAX }; #define NFTA_EXTHDR_MAX (__NFTA_EXTHDR_MAX - 1) -- cgit v1.2.3