From 1a64edf54f55d7956cf5a0d95898bc1f84f9b818 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Wed, 8 Mar 2017 16:48:44 +0100 Subject: netfilter: nft_ct: add helper set support this allows to assign connection tracking helpers to connections via nft objref infrastructure. The idea is to first specifiy a helper object: table ip filter { ct helper some-name { type "ftp" protocol tcp l3proto ip } } and then assign it via nft add ... ct helper set "some-name" helper assignment works for new conntracks only as we cannot expand the conntrack extension area once it has been committed to the main conntrack table. ipv4 and ipv6 protocols are tracked stored separately so we can also handle families that observe both ipv4 and ipv6 traffic. Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso --- include/uapi/linux/netfilter/nf_tables.h | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'include/uapi/linux/netfilter') diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h index 4f7d75682c59..34c8d08b687a 100644 --- a/include/uapi/linux/netfilter/nf_tables.h +++ b/include/uapi/linux/netfilter/nf_tables.h @@ -1259,10 +1259,20 @@ enum nft_fib_flags { NFTA_FIB_F_OIF = 1 << 4, /* restrict to oif */ }; +enum nft_ct_helper_attributes { + NFTA_CT_HELPER_UNSPEC, + NFTA_CT_HELPER_NAME, + NFTA_CT_HELPER_L3PROTO, + NFTA_CT_HELPER_L4PROTO, + __NFTA_CT_HELPER_MAX, +}; +#define NFTA_CT_HELPER_MAX (__NFTA_CT_HELPER_MAX - 1) + #define NFT_OBJECT_UNSPEC 0 #define NFT_OBJECT_COUNTER 1 #define NFT_OBJECT_QUOTA 2 -#define __NFT_OBJECT_MAX 3 +#define NFT_OBJECT_CT_HELPER 3 +#define __NFT_OBJECT_MAX 4 #define NFT_OBJECT_MAX (__NFT_OBJECT_MAX - 1) /** -- cgit v1.3.1