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linux-stable/net/netfilter
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Pablo Neira Ayuso b7b1d02fc4 netfilter: conntrack: set on IPS_ASSURED if flows enters internal stream state 
The internal stream state sets the timeout to 120 seconds 2 seconds
after the creation of the flow, attach this internal stream state to the
IPS_ASSURED flag for consistent event reporting.

Before this patch:

      [NEW] udp      17 30 src=10.246.11.13 dst=216.239.35.0 sport=37282 dport=123 [UNREPLIED] src=216.239.35.0 dst=10.246.11.13 sport=123 dport=37282
   [UPDATE] udp      17 30 src=10.246.11.13 dst=216.239.35.0 sport=37282 dport=123 src=216.239.35.0 dst=10.246.11.13 sport=123 dport=37282
   [UPDATE] udp      17 30 src=10.246.11.13 dst=216.239.35.0 sport=37282 dport=123 src=216.239.35.0 dst=10.246.11.13 sport=123 dport=37282 [ASSURED]
  [DESTROY] udp      17 src=10.246.11.13 dst=216.239.35.0 sport=37282 dport=123 src=216.239.35.0 dst=10.246.11.13 sport=123 dport=37282 [ASSURED]

Note IPS_ASSURED for the flow not yet in the internal stream state.

after this update:

      [NEW] udp      17 30 src=10.246.11.13 dst=216.239.35.0 sport=37282 dport=123 [UNREPLIED] src=216.239.35.0 dst=10.246.11.13 sport=123 dport=37282
   [UPDATE] udp      17 30 src=10.246.11.13 dst=216.239.35.0 sport=37282 dport=123 src=216.239.35.0 dst=10.246.11.13 sport=123 dport=37282
   [UPDATE] udp      17 120 src=10.246.11.13 dst=216.239.35.0 sport=37282 dport=123 src=216.239.35.0 dst=10.246.11.13 sport=123 dport=37282 [ASSURED]
  [DESTROY] udp      17 src=10.246.11.13 dst=216.239.35.0 sport=37282 dport=123 src=216.239.35.0 dst=10.246.11.13 sport=123 dport=37282 [ASSURED]

Before this patch, short-lived UDP flows never entered IPS_ASSURED, so
they were already candidate flow to be deleted by early_drop under
stress.

Before this patch, IPS_ASSURED is set on regardless the internal stream
state, attach this internal stream state to IPS_ASSURED.

packet #1 (original direction) enters NEW state
packet #2 (reply direction) enters ESTABLISHED state, sets on IPS_SEEN_REPLY
paclet #3 (any direction) sets on IPS_ASSURED (if 2 seconds since the
          creation has passed by).

Reported-by: Maciej Żenczykowski <zenczykowski@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2021-11-01 09:28:54 +01:00
..
ipset netfilter: ipset: Fix oversized kvmalloc() calls 2021-09-14 00:50:01 +02:00
ipvs netfilter: ipvs: merge ipv4 + ipv6 icmp reply handlers 2021-10-14 23:06:54 +02:00
core.c netfilter: core: Fix clang warnings about unused static inlines 2021-10-17 15:49:08 +02:00
Kconfig netfilter: Introduce egress hook 2021-10-14 23:06:28 +02:00
Makefile netfilter: add netfilter hooks to SRv6 data plane 2021-08-30 01:51:36 +02:00
nf_conncount.c
nf_conntrack_acct.c netfilter: nf_conntrack_acct.c: A typo fix 2021-03-28 17:31:14 -07:00
nf_conntrack_amanda.c netfilter: nf_conntrack_sip: fix expectation clash 2019-07-16 13:16:59 +02:00
nf_conntrack_broadcast.c netfilter: nf_conntrack_sip: fix expectation clash 2019-07-16 13:16:59 +02:00
nf_conntrack_core.c netfilter: conntrack: serialize hash resizes and cleanups 2021-09-21 03:46:56 +02:00
nf_conntrack_ecache.c netfilter: ecache: remove nf_exp_event_notifier structure 2021-08-25 12:50:38 +02:00
nf_conntrack_expect.c netfilter: conntrack: switch to siphash 2021-08-30 11:49:55 +02:00
nf_conntrack_extend.c netfilter: conntrack: remove two export symbols 2019-12-17 22:59:31 +01:00
nf_conntrack_ftp.c netfilter: remove BUG_ON() after skb_header_pointer() 2021-05-05 23:45:48 +02:00
nf_conntrack_h323_asn1.c netfilter: Use fallthrough pseudo-keyword 2020-07-22 01:18:05 +02:00
nf_conntrack_h323_main.c netfilter: fix clang-12 fmt string warnings 2021-06-01 23:53:51 +02:00
nf_conntrack_h323_types.c
nf_conntrack_helper.c netfilter: nftables: add nf_ct_pernet() helper function 2021-06-07 12:23:37 +02:00
nf_conntrack_irc.c netfilter: remove BUG_ON() after skb_header_pointer() 2021-05-05 23:45:48 +02:00
nf_conntrack_labels.c netfilter: not mark a spinlock as __read_mostly 2019-08-27 18:07:03 +02:00
nf_conntrack_netbios_ns.c
nf_conntrack_netlink.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2021-09-03 16:20:37 -07:00
nf_conntrack_pptp.c netfilter: remove BUG_ON() after skb_header_pointer() 2021-05-05 23:45:48 +02:00
nf_conntrack_proto.c netfilter: conntrack: nf_ct_gre_keymap_flush() removal 2021-07-02 02:07:01 +02:00
nf_conntrack_proto_dccp.c netfilter: conntrack: pass hook state to log functions 2021-06-18 14:47:43 +02:00
nf_conntrack_proto_generic.c
nf_conntrack_proto_gre.c netfilter: conntrack: nf_ct_gre_keymap_flush() removal 2021-07-02 02:07:01 +02:00
nf_conntrack_proto_icmp.c netfilter: conntrack: pass hook state to log functions 2021-06-18 14:47:43 +02:00
nf_conntrack_proto_icmpv6.c netfilter: conntrack: pass hook state to log functions 2021-06-18 14:47:43 +02:00
nf_conntrack_proto_sctp.c netfilter: conntrack: pass hook state to log functions 2021-06-18 14:47:43 +02:00
nf_conntrack_proto_tcp.c netfilter: conntrack: remove offload_pickup sysctl again 2021-08-06 17:07:41 +02:00
nf_conntrack_proto_udp.c netfilter: conntrack: set on IPS_ASSURED if flows enters internal stream state 2021-11-01 09:28:54 +01:00
nf_conntrack_sane.c netfilter: remove BUG_ON() after skb_header_pointer() 2021-05-05 23:45:48 +02:00
nf_conntrack_seqadj.c
nf_conntrack_sip.c netfilter: nf_conntrack_sip: fix expectation clash 2019-07-16 13:16:59 +02:00
nf_conntrack_snmp.c
nf_conntrack_standalone.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf 2021-09-03 16:20:37 -07:00
nf_conntrack_tftp.c netfilter: nf_conntrack_sip: fix expectation clash 2019-07-16 13:16:59 +02:00
nf_conntrack_timeout.c netfilter: update include directives. 2019-09-13 12:33:06 +02:00
nf_conntrack_timestamp.c
nf_dup_netdev.c netfilter: nf_fwd_netdev: clear timestamp in forwarding path 2020-10-22 14:49:36 +02:00
nf_flow_table_core.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-08-13 06:41:22 -07:00
nf_flow_table_inet.c netfilter: Add MODULE_DESCRIPTION entries to kernel modules 2020-06-25 00:50:31 +02:00
nf_flow_table_ip.c netfilter: flowtable: dst_check() from garbage collector path 2021-03-31 22:34:11 +02:00
nf_flow_table_offload.c net: Fix offloading indirect devices dependency on qdisc order creation 2021-08-19 13:19:30 +01:00
nf_hooks_lwtunnel.c netfilter: add netfilter hooks to SRv6 data plane 2021-08-30 01:51:36 +02:00
nf_internals.h netfilter: ctnetlink: add kernel side filtering for dump 2020-05-27 22:20:34 +02:00
nf_log.c netfilter: nft_log: perform module load from nf_tables 2021-03-31 22:34:11 +02:00
nf_log_syslog.c netfilter: nf_log_syslog: Unset bridge logger in pernet exit 2021-04-26 03:20:47 +02:00
nf_nat_amanda.c netfilter: nf_conntrack_sip: fix expectation clash 2019-07-16 13:16:59 +02:00
nf_nat_core.c netfilter: nat: include zone id in nat table hash again 2021-09-21 03:46:55 +02:00
nf_nat_ftp.c netfilter: nf_conntrack_sip: fix expectation clash 2019-07-16 13:16:59 +02:00
nf_nat_helper.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-22 08:59:24 -04:00
nf_nat_irc.c netfilter: nf_conntrack_sip: fix expectation clash 2019-07-16 13:16:59 +02:00
nf_nat_masquerade.c netfilter: nf_nat_masquerade: defer conntrack walk to work queue 2021-09-21 03:46:56 +02:00
nf_nat_proto.c netfilter: nat: move nf_xfrm_me_harder to where it is used 2021-04-26 03:20:07 +02:00
nf_nat_redirect.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-22 08:59:24 -04:00
nf_nat_sip.c netfilter: nf_conntrack_sip: fix expectation clash 2019-07-16 13:16:59 +02:00
nf_nat_tftp.c netfilter: nf_conntrack_sip: fix expectation clash 2019-07-16 13:16:59 +02:00
nf_queue.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next 2021-08-11 10:22:26 +01:00
nf_sockopt.c netfilter: switch nf_setsockopt to sockptr_t 2020-07-24 15:41:54 -07:00
nf_synproxy_core.c netfilter: synproxy: Fix out of bounds when parsing TCP options 2021-06-10 14:26:18 -07:00
nf_tables_api.c netfilter: nf_tables: honor NLM_F_CREATE and NLM_F_EXCL in event notification 2021-10-02 12:00:17 +02:00
nf_tables_core.c netfilter: nf_tables: add last expression 2021-06-17 03:23:00 +02:00
nf_tables_offload.c net: Fix offloading indirect devices dependency on qdisc order creation 2021-08-19 13:19:30 +01:00
nf_tables_trace.c netfilter: nf_tables: add and use nft_thoff helper 2021-05-29 01:04:54 +02:00
nfnetlink.c netfilter: add new hook nfnl subsystem 2021-06-07 12:41:10 +02:00
nfnetlink_acct.c netfilter: use nfnetlink_unicast() 2021-05-29 01:04:53 +02:00
nfnetlink_cthelper.c Merge ra.kernel.org:/pub/scm/linux/kernel/git/netdev/net 2021-06-07 13:01:52 -07:00
nfnetlink_cttimeout.c netfilter: use nfnetlink_unicast() 2021-05-29 01:04:53 +02:00
nfnetlink_hook.c netfilter: Introduce egress hook 2021-10-14 23:06:28 +02:00
nfnetlink_log.c netfilter: nfnetlink: add struct nfgenmsg to struct nfnl_info and use it 2021-06-07 12:23:36 +02:00
nfnetlink_osf.c netfilter: nfnetlink_osf: Fix a missing skb_header_pointer() NULL check 2021-05-05 22:26:09 +02:00
nfnetlink_queue.c netfilter: nf_queue: move hookfn registration out of struct net 2021-08-10 17:32:00 +02:00
nft_bitwise.c netfilter: nftables: add nft_parse_register_store() and use it 2021-01-27 23:16:02 +01:00
nft_byteorder.c netfilter: nftables: add nft_parse_register_store() and use it 2021-01-27 23:16:02 +01:00
nft_chain_filter.c netfilter: Introduce egress hook 2021-10-14 23:06:28 +02:00
nft_chain_nat.c netfilter: nf_tables: remove unused arg in nft_set_pktinfo_unspec() 2021-05-29 01:04:54 +02:00
nft_chain_route.c netfilter: nf_tables: remove unused arg in nft_set_pktinfo_unspec() 2021-05-29 01:04:54 +02:00
nft_cmp.c netfilter: nftables_offload: VLAN id needs host byteorder in flow dissector 2021-04-18 22:02:21 +02:00
nft_compat.c netfilter: log: work around missing softdep backend module 2021-09-21 03:46:56 +02:00
nft_connlimit.c netfilter: Add MODULE_DESCRIPTION entries to kernel modules 2020-06-25 00:50:31 +02:00
nft_counter.c netfilter: nftables: counter hardware offload support 2021-04-18 22:04:49 +02:00
nft_ct.c netfilter: nft_ct: protect nft_ct_pcpu_template_refcnt with mutex 2021-08-11 11:22:19 +02:00
nft_dup_netdev.c netfilter: nftables: add nft_parse_register_load() and use it 2021-01-27 22:53:29 +01:00
nft_dynset.c netfilter: nft_dynset: relax superfluous check on set updates 2021-10-07 19:53:15 +02:00
nft_exthdr.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-06-29 15:45:27 -07:00
nft_fib.c netfilter: nftables: add nft_parse_register_store() and use it 2021-01-27 23:16:02 +01:00
nft_fib_inet.c netfilter: Add MODULE_DESCRIPTION entries to kernel modules 2020-06-25 00:50:31 +02:00
nft_fib_netdev.c netfilter: Add MODULE_DESCRIPTION entries to kernel modules 2020-06-25 00:50:31 +02:00
nft_flow_offload.c netfilter: nf_tables: add and use nft_thoff helper 2021-05-29 01:04:54 +02:00
nft_fwd_netdev.c netfilter: nftables: add nft_parse_register_load() and use it 2021-01-27 22:53:29 +01:00
nft_hash.c netfilter: nftables: add nft_parse_register_store() and use it 2021-01-27 23:16:02 +01:00
nft_immediate.c netfilter: nftables: add nft_parse_register_store() and use it 2021-01-27 23:16:02 +01:00
nft_last.c netfilter: nft_last: avoid possible false sharing 2021-07-23 14:18:02 +02:00
nft_limit.c netfilter: nft_limit: avoid possible divide error in nft_limit_init 2021-04-10 21:15:35 +02:00
nft_log.c netfilter: nft_log: perform module load from nf_tables 2021-03-31 22:34:11 +02:00
nft_lookup.c netfilter: nf_tables: prefer direct calls for set lookups 2021-05-29 01:04:27 +02:00
nft_masq.c netfilter: nftables: add nft_parse_register_load() and use it 2021-01-27 22:53:29 +01:00
nft_meta.c netfilter: nftables: add nft_parse_register_store() and use it 2021-01-27 23:16:02 +01:00
nft_nat.c netfilter: nft_nat: allow to specify layer 4 protocol NAT only 2021-07-23 14:18:03 +02:00
nft_numgen.c netfilter: nftables: add nft_parse_register_store() and use it 2021-01-27 23:16:02 +01:00
nft_objref.c netfilter: add and use nft_set_do_lookup helper 2021-05-28 21:11:41 +02:00
nft_osf.c netfilter: nft_osf: check for TCP packet before further processing 2021-06-16 20:51:50 +02:00
nft_payload.c netfilter: nf_tables: add and use nft_thoff helper 2021-05-29 01:04:54 +02:00
nft_queue.c netfilter: nftables: add nft_parse_register_load() and use it 2021-01-27 22:53:29 +01:00
nft_quota.c netfilter: nf_tables: honor NLM_F_CREATE and NLM_F_EXCL in event notification 2021-10-02 12:00:17 +02:00
nft_range.c netfilter: nftables: add nft_parse_register_load() and use it 2021-01-27 22:53:29 +01:00
nft_redir.c netfilter: nftables: add nft_parse_register_load() and use it 2021-01-27 22:53:29 +01:00
nft_reject.c netfilter: nft_reject: unify reject init and dump into nft_reject 2020-10-31 10:40:42 +01:00
nft_reject_inet.c netfilter: nf_tables: add and use nft_sk helper 2021-05-29 01:04:53 +02:00
nft_reject_netdev.c netfilter: nft_reject: add reject verdict support for netdev 2020-10-31 10:41:00 +01:00
nft_rt.c netfilter: nftables: add nft_parse_register_store() and use it 2021-01-27 23:16:02 +01:00
nft_set_bitmap.c netfilter: nf_tables: prefer direct calls for set lookups 2021-05-29 01:04:27 +02:00
nft_set_hash.c netfilter: nf_tables: prefer direct calls for set lookups 2021-05-29 01:04:27 +02:00
nft_set_pipapo.c netfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version 2021-05-14 01:42:52 +02:00
nft_set_pipapo.h netfilter: nf_tables: prefer direct calls for set lookups 2021-05-29 01:04:27 +02:00
nft_set_pipapo_avx2.c netfilter: nft_set_pipapo_avx2: fix up description warnings 2021-06-01 23:53:51 +02:00
nft_set_pipapo_avx2.h netfilter: nf_tables: prefer direct calls for set lookups 2021-05-29 01:04:27 +02:00
nft_set_rbtree.c netfilter: nf_tables: prefer direct calls for set lookups 2021-05-29 01:04:27 +02:00
nft_socket.c netfilter: nft_socket: fix build with CONFIG_SOCK_CGROUP_DATA=n 2021-04-27 22:34:05 +02:00
nft_synproxy.c netfilter: nf_tables: add and use nft_thoff helper 2021-05-29 01:04:54 +02:00
nft_tproxy.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-06-29 15:45:27 -07:00
nft_tunnel.c netfilter: nftables: add nft_parse_register_store() and use it 2021-01-27 23:16:02 +01:00
nft_xfrm.c netfilter: nftables: add nft_parse_register_store() and use it 2021-01-27 23:16:02 +01:00
utils.c netfilter: use actual socket sk rather than skb sk when routing harder 2020-10-30 12:57:39 +01:00
x_tables.c netfilter: x_tables: never register tables by default 2021-08-09 10:22:01 +02:00
xt_addrtype.c
xt_AUDIT.c netfilter: fix clang-12 fmt string warnings 2021-06-01 23:53:51 +02:00
xt_bpf.c bpf: Refactor BPF_PROG_RUN into a function 2021-08-17 00:45:07 +02:00
xt_cgroup.c
xt_CHECKSUM.c
xt_CLASSIFY.c
xt_cluster.c
xt_comment.c
xt_connbytes.c
xt_connlabel.c
xt_connlimit.c netfilter: update include directives. 2019-09-13 12:33:06 +02:00
xt_connmark.c netfilter: Replace HTTP links with HTTPS ones 2020-07-29 20:09:18 +02:00
xt_CONNSECMARK.c netfilter: Replace HTTP links with HTTPS ones 2020-07-29 20:09:18 +02:00
xt_conntrack.c
xt_cpu.c
xt_CT.c netfilter: remove xt pernet data 2021-08-01 12:00:51 +02:00
xt_dccp.c
xt_devgroup.c
xt_DSCP.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-22 08:59:24 -04:00
xt_dscp.c
xt_ecn.c
xt_esp.c
xt_hashlimit.c netfilter: Replace zero-length array with flexible-array member 2020-03-15 15:20:16 +01:00
xt_helper.c
xt_HL.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-22 08:59:24 -04:00
xt_hl.c
xt_HMARK.c netfilter: xt_HMARK: Use ip_is_fragment() helper 2020-08-28 19:55:51 +02:00
xt_IDLETIMER.c netfilter: xt_IDLETIMER: target v1 - match Android layout 2020-04-05 23:26:37 +02:00
xt_ipcomp.c
xt_iprange.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-06-25 01:32:59 +02:00
xt_ipvs.c
xt_l2tp.c
xt_LED.c
xt_length.c
xt_limit.c netfilter: x_tables: improve limit_mt scalability 2021-05-29 01:04:52 +02:00
xt_LOG.c netfilter: log: work around missing softdep backend module 2021-09-21 03:46:56 +02:00
xt_mac.c
xt_mark.c
xt_MASQUERADE.c
xt_multiport.c
xt_nat.c netfilter: Add MODULE_DESCRIPTION entries to kernel modules 2020-06-25 00:50:31 +02:00
xt_NETMAP.c
xt_nfacct.c netfilter: Remove unnecessary conversion to bool 2020-12-01 09:45:29 +01:00
xt_NFLOG.c netfilter: log: work around missing softdep backend module 2021-09-21 03:46:56 +02:00
xt_NFQUEUE.c
xt_osf.c
xt_owner.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-06-25 01:32:59 +02:00
xt_physdev.c netfilter: inline xt_hashlimit, ebt_802_3 and xt_physdev headers 2019-09-13 12:32:48 +02:00
xt_pkttype.c
xt_policy.c
xt_quota.c
xt_RATEEST.c net: sched: Merge Qdisc::bstats and Qdisc::cpu_bstats data types 2021-10-18 12:54:41 +01:00
xt_rateest.c
xt_realm.c
xt_recent.c netfilter: xt_recent: Fix attempt to update deleted entry 2021-02-04 00:33:08 +01:00
xt_REDIRECT.c
xt_repldata.h
xt_sctp.c
xt_SECMARK.c netfilter: xt_SECMARK: add new revision to fix structure layout 2021-05-03 23:02:44 +02:00
xt_set.c netfilter: inline four headers files into another one. 2019-08-13 12:14:26 +02:00
xt_socket.c netfilter: disable defrag once its no longer needed 2021-04-26 03:20:07 +02:00
xt_state.c
xt_statistic.c
xt_string.c
xt_TCPMSS.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-22 08:59:24 -04:00
xt_tcpmss.c
xt_TCPOPTSTRIP.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-06-22 08:59:24 -04:00
xt_tcpudp.c
xt_TEE.c
xt_time.c netfilter: Replace HTTP links with HTTPS ones 2020-07-29 20:09:18 +02:00
xt_TPROXY.c netfilter: disable defrag once its no longer needed 2021-04-26 03:20:07 +02:00
xt_TRACE.c netfilter: nf_log: add module softdeps 2021-03-31 22:34:10 +02:00
xt_u32.c