Merge tag 'nf-24-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for net:

1) Narrow down target/match revision to u8 in nft_compat.

2) Bail out with unused flags in nft_compat.

3) Restrict layer 4 protocol to u16 in nft_compat.

4) Remove static in pipapo get command that slipped through when
   reducing set memory footprint.

5) Follow up incremental fix for the ipset performance regression,
   this includes the missing gc cancellation, from Jozsef Kadlecsik.

6) Allow to filter by zone 0 in ctnetlink, do not interpret zone 0
   as no filtering, from Felix Huettner.

7) Reject direction for NFT_CT_ID.

8) Use timestamp to check for set element expiration while transaction
   is handled to prevent garbage collection from removing set elements
   that were just added by this transaction. Packet path and netlink
   dump/get path still use current time to check for expiration.

9) Restore NF_REPEAT in nfnetlink_queue, from Florian Westphal.

10) map_index needs to be percpu and per-set, not just percpu.
    At this time its possible for a pipapo set to fill the all-zero part
    with ones and take the 'might have bits set' as 'start-from-zero' area.
    From Florian Westphal. This includes three patches:

    - Change scratchpad area to a structure that provides space for a
      per-set-and-cpu toggle and uses it of the percpu one.

    - Add a new free helper to prepare for the next patch.

    - Remove the scratch_aligned pointer and makes AVX2 implementation
      use the exact same memory addresses for read/store of the matching
      state.

netfilter pull request 24-02-08

* tag 'nf-24-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
  netfilter: nft_set_pipapo: remove scratch_aligned pointer
  netfilter: nft_set_pipapo: add helper to release pcpu scratch area
  netfilter: nft_set_pipapo: store index in scratch maps
  netfilter: nft_set_rbtree: skip end interval element from gc
  netfilter: nfnetlink_queue: un-break NF_REPEAT
  netfilter: nf_tables: use timestamp to check for set element timeout
  netfilter: nft_ct: reject direction for ct id
  netfilter: ctnetlink: fix filtering for zone 0
  netfilter: ipset: Missing gc cancellations fixed
  netfilter: nft_set_pipapo: remove static in nft_pipapo_get()
  netfilter: nft_compat: restrict match/target protocol to u16
  netfilter: nft_compat: reject unused compat flag
  netfilter: nft_compat: narrow down revision to unsigned 8-bits
====================

Link: https://lore.kernel.org/r/20240208112834.1433-1-pablo@netfilter.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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