Merge tag 'nf-next-23-10-25' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next

Pablo Neira Ayuso says:

====================
Netfilter updates for net-next

The following patchset contains Netfilter updates for net-next. Mostly
nf_tables updates with two patches for connlabel and br_netfilter.

1) Rename function name to perform on-demand GC for rbtree elements,
   and replace async GC in rbtree by sync GC. Patches from Florian Westphal.

2) Use commit_mutex for NFT_MSG_GETRULE_RESET to ensure that two
   concurrent threads invoking this command do not underrun stateful
   objects. Patches from Phil Sutter.

3) Use single hook to deal with IP and ARP packets in br_netfilter.
   Patch from Florian Westphal.

4) Use atomic_t in netns->connlabel use counter instead of using a
   spinlock, also patch from Florian.

5) Cleanups for stateful objects infrastructure in nf_tables.
   Patches from Phil Sutter.

6) Flush path uses opaque set element offered by the iterator, instead of
   calling pipapo_deactivate() which looks up for it again.

7) Set backend .flush interface always succeeds, make it return void
   instead.

8) Add struct nft_elem_priv placeholder structure and use it by replacing
   void * to pass opaque set element representation from backend to frontend
   which defeats compiler type checks.

9) Shrink memory consumption of set element transactions, by reducing
   struct nft_trans_elem object size and reducing stack memory usage.

10) Use struct nft_elem_priv also for set backend .insert operation too.

11) Carry reset flag in nft_set_dump_ctx structure, instead of passing it
    as a function argument, from Phil Sutter.

netfilter pull request 23-10-25

* tag 'nf-next-23-10-25' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next:
  netfilter: nf_tables: Carry reset boolean in nft_set_dump_ctx
  netfilter: nf_tables: set->ops->insert returns opaque set element in case of EEXIST
  netfilter: nf_tables: shrink memory consumption of set elements
  netfilter: nf_tables: expose opaque set element as struct nft_elem_priv
  netfilter: nf_tables: set backend .flush always succeeds
  netfilter: nft_set_pipapo: no need to call pipapo_deactivate() from flush
  netfilter: nf_tables: Carry reset boolean in nft_obj_dump_ctx
  netfilter: nf_tables: nft_obj_filter fits into cb->ctx
  netfilter: nf_tables: Carry s_idx in nft_obj_dump_ctx
  netfilter: nf_tables: A better name for nft_obj_filter
  netfilter: nf_tables: Unconditionally allocate nft_obj_filter
  netfilter: nf_tables: Drop pointless memset in nf_tables_dump_obj
  netfilter: conntrack: switch connlabels to atomic_t
  br_netfilter: use single forward hook for ip and arp
  netfilter: nf_tables: Add locking for NFT_MSG_GETRULE_RESET requests
  netfilter: nf_tables: Introduce nf_tables_getrule_single()
  netfilter: nf_tables: Open-code audit log call in nf_tables_getrule()
  netfilter: nft_set_rbtree: prefer sync gc to async worker
  netfilter: nft_set_rbtree: rename gc deactivate+erase function
====================

Link: https://lore.kernel.org/r/20231025212555.132775-1-pablo@netfilter.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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