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linux/include/net/netfilter
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Fernando Fernandez Mancera be102eb6a0 netfilter: nf_conncount: rework API to use sk_buff directly 
When using nf_conncount infrastructure for non-confirmed connections a
duplicated track is possible due to an optimization introduced since
commit d265929930 ("netfilter: nf_conncount: reduce unnecessary GC").

In order to fix this introduce a new conncount API that receives
directly an sk_buff struct.  It fetches the tuple and zone and the
corresponding ct from it. It comes with both existing conncount variants
nf_conncount_count_skb() and nf_conncount_add_skb(). In addition remove
the old API and adjust all the users to use the new one.

This way, for each sk_buff struct it is possible to check if there is a
ct present and already confirmed. If so, skip the add operation.

Fixes: d265929930 ("netfilter: nf_conncount: reduce unnecessary GC")
Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 		2025-11-28 00:05:49 +00:00
..
ipv4 netfilter: nf_reject: remove unneeded exports 2025-09-02 15:28:17 +02:00
ipv6 netfilter: nf_reject: remove unneeded exports 2025-09-02 15:28:17 +02:00
br_netfilter.h
…
nf_bpf_link.h bpf: minimal support for programs hooked into netfilter framework 2023-04-21 11:34:14 -07:00
nf_conntrack.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-07-17 11:00:33 -07:00
nf_conntrack_acct.h netfilter: conntrack: Remove unused function declarations 2023-08-08 13:02:00 +02:00
nf_conntrack_act_ct.h net/sched: act_ct: Always fill offloading tuple iifidx 2023-11-08 17:47:08 -08:00
nf_conntrack_bpf.h net: netfilter: move bpf_ct_set_nat_info kfunc in nf_nat_bpf.c 2022-10-03 09:17:32 -07:00
nf_conntrack_bridge.h
…
nf_conntrack_core.h netfilter: conntrack: fix wrong ct->timeout value 2023-04-19 12:08:38 +02:00
nf_conntrack_count.h netfilter: nf_conncount: rework API to use sk_buff directly 2025-11-28 00:05:49 +00:00
nf_conntrack_ecache.h netfilter: conntrack: add conntrack event timestamp 2025-01-09 14:42:16 +01:00
nf_conntrack_expect.h netfilter: allow exp not to be removed in nf_ct_find_expectation 2023-07-20 10:06:36 +02:00
nf_conntrack_extend.h netfilter: extensions: introduce extension genid count 2022-05-13 18:52:16 +02:00
nf_conntrack_helper.h netfilter: helper: Remove unused function declarations 2023-08-08 13:01:59 +02:00
nf_conntrack_l4proto.h netfilter: fix typo in nf_conntrack_l4proto.h comment 2025-10-30 12:52:45 +01:00
nf_conntrack_labels.h netfilter: conntrack: switch connlabels to atomic_t 2023-10-24 13:16:30 +02:00
nf_conntrack_seqadj.h netfilter: conntrack: remove extension register api 2022-02-04 06:30:28 +01:00
nf_conntrack_synproxy.h
…
nf_conntrack_timeout.h netfilter: nf_conntrack: add missing __rcu annotations 2022-07-11 16:25:15 +02:00
nf_conntrack_timestamp.h netfilter: conntrack: remove extension register api 2022-02-04 06:30:28 +01:00
nf_conntrack_tuple.h netfilter: conntrack: don't fold port numbers into addresses before hashing 2023-07-05 14:42:16 +02:00
nf_conntrack_zones.h
…
nf_dup_netdev.h
…
nf_flow_table.h netfilter: flowtable: Add IPIP rx sw acceleration 2025-11-28 00:00:38 +00:00
nf_hooks_lwtunnel.h sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
nf_log.h netfilter: load nf_log_syslog on enabling nf_conntrack_log_invalid 2025-07-25 18:35:41 +02:00
nf_nat.h net: move the nat function to nf_nat_ovs for ovs and tc 2022-12-12 10:14:03 +00:00
nf_nat_helper.h netfilter: nat: move repetitive nat port reserve loop to a helper 2022-09-07 16:46:04 +02:00
nf_nat_masquerade.h
…
nf_nat_redirect.h netfilter: nft_redir: use `struct nf_nat_range2` throughout and deduplicate eval call-backs 2023-03-22 21:48:59 +01:00
nf_queue.h netfilter: move nf_reinject into nfnetlink_queue modules 2024-02-21 12:03:22 +01:00
nf_reject.h netfilter: conntrack: remove DCCP protocol support 2025-07-03 13:51:39 +02:00
nf_socket.h
…
nf_synproxy.h
…
nf_tables.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-11 17:40:13 -07:00
nf_tables_core.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2025-09-11 17:40:13 -07:00
nf_tables_ipv4.h netfilter: nf_tables: restore IP sanity checks for netdev/egress 2024-08-26 13:05:28 +02:00
nf_tables_ipv6.h netfilter: nf_tables_ipv6: consider network offset in netdev/egress validation 2024-08-27 18:11:56 +02:00
nf_tables_offload.h netfilter: nf_tables: bail out early if hardware offload is not supported 2022-06-06 19:19:15 +02:00
nf_tproxy.h net: reformat kdoc return statements 2024-12-09 14:44:59 -08:00
nft_fib.h netfilter: nf_tables: nft_fib: consistent l3mdev handling 2025-05-23 13:57:09 +02:00
nft_meta.h netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
nft_reject.h netfilter: nf_tables: drop unused 3rd argument from validate callback ops 2024-09-03 10:47:17 +02:00
xt_rateest.h net: sched: Merge Qdisc::bstats and Qdisc::cpu_bstats data types 2021-10-18 12:54:41 +01:00