From 5877cc62d9bd1c7183992a2d05dd82d17ed12097 Mon Sep 17 00:00:00 2001 From: Laura Garcia Liebana Date: Mon, 5 Sep 2016 10:55:03 +0200 Subject: expr: hash: Add offset to hash value Add support to pass through an offset to the hash value. With this feature, the sysadmin is able to generate a hash with a given started value. Example: meta mark set jhash ip saddr mod 2 seed 0xabcd offset 100 This option generates marks according to the source address from 100 to 101. Signed-off-by: Laura Garcia Liebana Signed-off-by: Pablo Neira Ayuso --- include/linux/netfilter/nf_tables.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/netfilter/nf_tables.h') diff --git a/include/linux/netfilter/nf_tables.h b/include/linux/netfilter/nf_tables.h index dd8b746..e608054 100644 --- a/include/linux/netfilter/nf_tables.h +++ b/include/linux/netfilter/nf_tables.h @@ -731,6 +731,7 @@ enum nft_meta_keys { * @NFTA_HASH_LEN: source data length (NLA_U32) * @NFTA_HASH_MODULUS: modulus value (NLA_U32) * @NFTA_HASH_SEED: seed value (NLA_U32) + * @NFTA_HASH_OFFSET: offset value to be added (NLA_U32) */ enum nft_hash_attributes { NFTA_HASH_UNSPEC, @@ -739,6 +740,7 @@ enum nft_hash_attributes { NFTA_HASH_LEN, NFTA_HASH_MODULUS, NFTA_HASH_SEED, + NFTA_HASH_OFFSET, __NFTA_HASH_MAX, }; #define NFTA_HASH_MAX (__NFTA_HASH_MAX - 1) -- cgit v1.2.3