This is a note to let you know that I've just added the patch titled netfilter: nf_tables: reintroduce the NFT_SET_CONCAT flag to the 5.6-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: netfilter-nf_tables-reintroduce-the-nft_set_concat-flag.patch and it can be found in the queue-5.6 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From ef516e8625ddea90b3a0313f3a0b0baa83db7ac2 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx> Date: Tue, 7 Apr 2020 14:10:38 +0200 Subject: netfilter: nf_tables: reintroduce the NFT_SET_CONCAT flag From: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx> commit ef516e8625ddea90b3a0313f3a0b0baa83db7ac2 upstream. Stefano originally proposed to introduce this flag, users hit EOPNOTSUPP in new binaries with old kernels when defining a set with ranges in a concatenation. Fixes: f3a2181e16f1 ("netfilter: nf_tables: Support for sets with multiple ranged fields") Reviewed-by: Stefano Brivio <sbrivio@xxxxxxxxxx> Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- include/uapi/linux/netfilter/nf_tables.h | 2 ++ net/netfilter/nf_tables_api.c | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) --- a/include/uapi/linux/netfilter/nf_tables.h +++ b/include/uapi/linux/netfilter/nf_tables.h @@ -276,6 +276,7 @@ enum nft_rule_compat_attributes { * @NFT_SET_TIMEOUT: set uses timeouts * @NFT_SET_EVAL: set can be updated from the evaluation path * @NFT_SET_OBJECT: set contains stateful objects + * @NFT_SET_CONCAT: set contains a concatenation */ enum nft_set_flags { NFT_SET_ANONYMOUS = 0x1, @@ -285,6 +286,7 @@ enum nft_set_flags { NFT_SET_TIMEOUT = 0x10, NFT_SET_EVAL = 0x20, NFT_SET_OBJECT = 0x40, + NFT_SET_CONCAT = 0x80, }; /** --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -3949,7 +3949,7 @@ static int nf_tables_newset(struct net * if (flags & ~(NFT_SET_ANONYMOUS | NFT_SET_CONSTANT | NFT_SET_INTERVAL | NFT_SET_TIMEOUT | NFT_SET_MAP | NFT_SET_EVAL | - NFT_SET_OBJECT)) + NFT_SET_OBJECT | NFT_SET_CONCAT)) return -EOPNOTSUPP; /* Only one of these operations is supported */ if ((flags & (NFT_SET_MAP | NFT_SET_OBJECT)) == Patches currently in stable-queue which might be from pablo@xxxxxxxxxxxxx are queue-5.6/netfilter-nf_tables-reintroduce-the-nft_set_concat-flag.patch